KILLED proof of input_5bzcYnwoGk.trs # AProVE Commit ID: aff8ecad908e01718a4c36e68d2e55d5e0f16e15 fuhs 20220216 unpublished The Runtime Complexity (parallel-innermost) of the given CpxTRS could be proven to be BOUNDS(1, INF). (0) CpxTRS (1) RenamingProof [BOTH BOUNDS(ID, ID), 0 ms] (2) CpxTRS (3) RelTrsToTrsProof [UPPER BOUND(ID), 0 ms] (4) CpxTRS (5) CpxTrsToCdtProof [UPPER BOUND(ID), 0 ms] (6) CdtProblem (7) CdtToCpxRelTrsProof [BOTH BOUNDS(ID, ID), 0 ms] (8) CpxRelTRS (9) RenamingProof [BOTH BOUNDS(ID, ID), 0 ms] (10) CpxRelTRS (11) TypeInferenceProof [BOTH BOUNDS(ID, ID), 0 ms] (12) typed CpxTrs (13) OrderProof [LOWER BOUND(ID), 0 ms] (14) typed CpxTrs (15) RewriteLemmaProof [LOWER BOUND(ID), 713 ms] (16) BEST (17) proven lower bound (18) LowerBoundPropagationProof [FINISHED, 0 ms] (19) BOUNDS(n^1, INF) (20) typed CpxTrs (21) RewriteLemmaProof [LOWER BOUND(ID), 334 ms] (22) typed CpxTrs (23) RewriteLemmaProof [LOWER BOUND(ID), 364 ms] (24) typed CpxTrs (25) RelTrsToWeightedTrsProof [UPPER BOUND(ID), 0 ms] (26) CpxWeightedTrs (27) TypeInferenceProof [BOTH BOUNDS(ID, ID), 0 ms] (28) CpxTypedWeightedTrs (29) CompletionProof [UPPER BOUND(ID), 0 ms] (30) CpxTypedWeightedCompleteTrs (31) NarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (32) CpxTypedWeightedCompleteTrs (33) CpxTypedWeightedTrsToRntsProof [UPPER BOUND(ID), 6 ms] (34) CpxRNTS (35) SimplificationProof [BOTH BOUNDS(ID, ID), 0 ms] (36) CpxRNTS (37) CompletionProof [UPPER BOUND(ID), 0 ms] (38) CpxTypedWeightedCompleteTrs (39) CpxTypedWeightedTrsToRntsProof [UPPER BOUND(ID), 0 ms] (40) CpxRNTS (41) CpxTrsToCdtProof [UPPER BOUND(ID), 0 ms] (42) CdtProblem (43) CdtLeafRemovalProof [ComplexityIfPolyImplication, 0 ms] (44) CdtProblem (45) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms] (46) CdtProblem (47) CdtUsableRulesProof [BOTH BOUNDS(ID, ID), 4 ms] (48) CdtProblem (49) CdtToCpxRelTrsProof [BOTH BOUNDS(ID, ID), 0 ms] (50) CpxRelTRS (51) RelTrsToTrsProof [UPPER BOUND(ID), 0 ms] (52) CpxTRS (53) RelTrsToWeightedTrsProof [BOTH BOUNDS(ID, ID), 0 ms] (54) CpxWeightedTrs (55) TypeInferenceProof [BOTH BOUNDS(ID, ID), 0 ms] (56) CpxTypedWeightedTrs (57) CompletionProof [UPPER BOUND(ID), 0 ms] (58) CpxTypedWeightedCompleteTrs (59) NarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (60) CpxTypedWeightedCompleteTrs (61) CpxTypedWeightedTrsToRntsProof [UPPER BOUND(ID), 0 ms] (62) CpxRNTS (63) SimplificationProof [BOTH BOUNDS(ID, ID), 0 ms] (64) CpxRNTS (65) CompletionProof [UPPER BOUND(ID), 0 ms] (66) CpxTypedWeightedCompleteTrs (67) CpxTypedWeightedTrsToRntsProof [UPPER BOUND(ID), 0 ms] (68) CpxRNTS (69) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (70) CdtProblem (71) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms] (72) CdtProblem (73) CdtUsableRulesProof [BOTH BOUNDS(ID, ID), 0 ms] (74) CdtProblem (75) CdtInstantiationProof [BOTH BOUNDS(ID, ID), 0 ms] (76) CdtProblem (77) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (78) CdtProblem (79) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (80) CdtProblem (81) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (82) CdtProblem (83) CdtRewritingProof [BOTH BOUNDS(ID, ID), 0 ms] (84) CdtProblem (85) CdtRewritingProof [BOTH BOUNDS(ID, ID), 0 ms] (86) CdtProblem (87) CdtRewritingProof [BOTH BOUNDS(ID, ID), 0 ms] (88) CdtProblem (89) CdtInstantiationProof [BOTH BOUNDS(ID, ID), 0 ms] (90) CdtProblem (91) CdtUsableRulesProof [BOTH BOUNDS(ID, ID), 0 ms] (92) CdtProblem (93) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (94) CdtProblem (95) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (96) CdtProblem (97) CdtRuleRemovalProof [UPPER BOUND(ADD(n^1)), 28 ms] (98) CdtProblem (99) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (100) CdtProblem (101) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (102) CdtProblem (103) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (104) CdtProblem (105) CdtKnowledgeProof [BOTH BOUNDS(ID, ID), 0 ms] (106) CdtProblem (107) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (108) CdtProblem (109) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (110) CdtProblem (111) CdtKnowledgeProof [BOTH BOUNDS(ID, ID), 0 ms] (112) CdtProblem (113) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (114) CdtProblem (115) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (116) CdtProblem (117) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 0 ms] (118) CdtProblem (119) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms] (120) CdtProblem (121) CdtKnowledgeProof [BOTH BOUNDS(ID, ID), 0 ms] (122) CdtProblem (123) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (124) CdtProblem (125) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms] (126) CdtProblem (127) CdtKnowledgeProof [BOTH BOUNDS(ID, ID), 0 ms] (128) CdtProblem (129) CdtRuleRemovalProof [UPPER BOUND(ADD(n^1)), 25 ms] (130) CdtProblem (131) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 0 ms] (132) CdtProblem (133) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (134) CdtProblem (135) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (136) CdtProblem (137) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (138) CdtProblem (139) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 0 ms] (140) CdtProblem (141) CdtGraphSplitRhsProof [BOTH BOUNDS(ID, ID), 0 ms] (142) CdtProblem (143) CdtRewritingProof [BOTH BOUNDS(ID, ID), 0 ms] (144) CdtProblem (145) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms] (146) CdtProblem (147) CdtRewritingProof [BOTH BOUNDS(ID, ID), 4 ms] (148) CdtProblem (149) CdtRewritingProof [BOTH BOUNDS(ID, ID), 0 ms] (150) CdtProblem (151) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms] (152) CdtProblem (153) CdtUsableRulesProof [BOTH BOUNDS(ID, ID), 0 ms] (154) CdtProblem (155) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (156) CdtProblem (157) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms] (158) CdtProblem (159) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (160) CdtProblem (161) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (162) CdtProblem (163) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (164) CdtProblem (165) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (166) CdtProblem (167) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (168) CdtProblem (169) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (170) CdtProblem (171) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (172) CdtProblem (173) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (174) CdtProblem (175) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (176) CdtProblem (177) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (178) CdtProblem (179) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (180) CdtProblem (181) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (182) CdtProblem (183) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (184) CdtProblem (185) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (186) CdtProblem (187) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (188) CdtProblem (189) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 6 ms] (190) CdtProblem (191) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms] (192) CdtProblem (193) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 0 ms] (194) CdtProblem (195) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 0 ms] (196) CdtProblem ---------------------------------------- (0) Obligation: The Runtime Complexity (parallel-innermost) of the given CpxTRS could be proven to be BOUNDS(1, INF). The TRS R consists of the following rules: double(x) -> permute(x, x, a) permute(x, y, a) -> permute(isZero(x), x, b) permute(false, x, b) -> permute(ack(x, x), p(x), c) permute(true, x, b) -> 0 permute(y, x, c) -> s(s(permute(x, y, a))) p(0) -> 0 p(s(x)) -> x ack(0, x) -> plus(x, s(0)) ack(s(x), 0) -> ack(x, s(0)) ack(s(x), s(y)) -> ack(x, ack(s(x), y)) plus(0, y) -> y plus(s(x), y) -> plus(x, s(y)) plus(x, s(s(y))) -> s(plus(s(x), y)) plus(x, s(0)) -> s(x) plus(x, 0) -> x isZero(0) -> true isZero(s(x)) -> false S is empty. Rewrite Strategy: PARALLEL_INNERMOST ---------------------------------------- (1) RenamingProof (BOTH BOUNDS(ID, ID)) Renamed function symbols to avoid clashes with predefined symbol. ---------------------------------------- (2) Obligation: The Runtime Complexity (parallel-innermost) of the given CpxTRS could be proven to be BOUNDS(1, INF). The TRS R consists of the following rules: double(x) -> permute(x, x, a) permute(x, y, a) -> permute(isZero(x), x, b) permute(false, x, b) -> permute(ack(x, x), p(x), c) permute(true, x, b) -> 0' permute(y, x, c) -> s(s(permute(x, y, a))) p(0') -> 0' p(s(x)) -> x ack(0', x) -> plus(x, s(0')) ack(s(x), 0') -> ack(x, s(0')) ack(s(x), s(y)) -> ack(x, ack(s(x), y)) plus(0', y) -> y plus(s(x), y) -> plus(x, s(y)) plus(x, s(s(y))) -> s(plus(s(x), y)) plus(x, s(0')) -> s(x) plus(x, 0') -> x isZero(0') -> true isZero(s(x)) -> false S is empty. Rewrite Strategy: PARALLEL_INNERMOST ---------------------------------------- (3) RelTrsToTrsProof (UPPER BOUND(ID)) transformed relative TRS to TRS ---------------------------------------- (4) Obligation: The Runtime Complexity (parallel-innermost) of the given CpxTRS could be proven to be BOUNDS(1, INF). The TRS R consists of the following rules: double(x) -> permute(x, x, a) permute(x, y, a) -> permute(isZero(x), x, b) permute(false, x, b) -> permute(ack(x, x), p(x), c) permute(true, x, b) -> 0 permute(y, x, c) -> s(s(permute(x, y, a))) p(0) -> 0 p(s(x)) -> x ack(0, x) -> plus(x, s(0)) ack(s(x), 0) -> ack(x, s(0)) ack(s(x), s(y)) -> ack(x, ack(s(x), y)) plus(0, y) -> y plus(s(x), y) -> plus(x, s(y)) plus(x, s(s(y))) -> s(plus(s(x), y)) plus(x, s(0)) -> s(x) plus(x, 0) -> x isZero(0) -> true isZero(s(x)) -> false S is empty. Rewrite Strategy: PARALLEL_INNERMOST ---------------------------------------- (5) CpxTrsToCdtProof (UPPER BOUND(ID)) Converted Cpx (relative) TRS with rewrite strategy PARALLEL_INNERMOST to CDT ---------------------------------------- (6) Obligation: Complexity Dependency Tuples Problem Rules: double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0 permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0) -> 0 p(s(z0)) -> z0 ack(0, z0) -> plus(z0, s(0)) ack(s(z0), 0) -> ack(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0)) -> s(z0) plus(z0, 0) -> z0 isZero(0) -> true isZero(s(z0)) -> false Tuples: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0) -> c7 P(s(z0)) -> c8 ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0, z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0)) -> c15 PLUS(z0, 0) -> c16 ISZERO(0) -> c17 ISZERO(s(z0)) -> c18 S tuples: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0) -> c7 P(s(z0)) -> c8 ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0, z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0)) -> c15 PLUS(z0, 0) -> c16 ISZERO(0) -> c17 ISZERO(s(z0)) -> c18 K tuples:none Defined Rule Symbols: double_1, permute_3, p_1, ack_2, plus_2, isZero_1 Defined Pair Symbols: DOUBLE_1, PERMUTE_3, P_1, ACK_2, PLUS_2, ISZERO_1 Compound Symbols: c1_1, c2_2, c3_2, c4_2, c5, c6_1, c7, c8, c9_1, c10_1, c11_2, c12, c13_1, c14_1, c15, c16, c17, c18 ---------------------------------------- (7) CdtToCpxRelTrsProof (BOTH BOUNDS(ID, ID)) Converted S to standard rules, and D \ S as well as R to relative rules. ---------------------------------------- (8) Obligation: The Runtime Complexity (innermost) of the given CpxRelTRS could be proven to be BOUNDS(n^1, INF). The TRS R consists of the following rules: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0) -> c7 P(s(z0)) -> c8 ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0, z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0)) -> c15 PLUS(z0, 0) -> c16 ISZERO(0) -> c17 ISZERO(s(z0)) -> c18 The (relative) TRS S consists of the following rules: double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0 permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0) -> 0 p(s(z0)) -> z0 ack(0, z0) -> plus(z0, s(0)) ack(s(z0), 0) -> ack(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0)) -> s(z0) plus(z0, 0) -> z0 isZero(0) -> true isZero(s(z0)) -> false Rewrite Strategy: INNERMOST ---------------------------------------- (9) RenamingProof (BOTH BOUNDS(ID, ID)) Renamed function symbols to avoid clashes with predefined symbol. ---------------------------------------- (10) Obligation: The Runtime Complexity (innermost) of the given CpxRelTRS could be proven to be BOUNDS(n^1, INF). The TRS R consists of the following rules: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0') -> c7 P(s(z0)) -> c8 ACK(0', z0) -> c9(PLUS(z0, s(0'))) ACK(s(z0), 0') -> c10(ACK(z0, s(0'))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0', z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0')) -> c15 PLUS(z0, 0') -> c16 ISZERO(0') -> c17 ISZERO(s(z0)) -> c18 The (relative) TRS S consists of the following rules: double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0' permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0') -> 0' p(s(z0)) -> z0 ack(0', z0) -> plus(z0, s(0')) ack(s(z0), 0') -> ack(z0, s(0')) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0', z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0')) -> s(z0) plus(z0, 0') -> z0 isZero(0') -> true isZero(s(z0)) -> false Rewrite Strategy: INNERMOST ---------------------------------------- (11) TypeInferenceProof (BOTH BOUNDS(ID, ID)) Inferred types. ---------------------------------------- (12) Obligation: Innermost TRS: Rules: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0') -> c7 P(s(z0)) -> c8 ACK(0', z0) -> c9(PLUS(z0, s(0'))) ACK(s(z0), 0') -> c10(ACK(z0, s(0'))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0', z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0')) -> c15 PLUS(z0, 0') -> c16 ISZERO(0') -> c17 ISZERO(s(z0)) -> c18 double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0' permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0') -> 0' p(s(z0)) -> z0 ack(0', z0) -> plus(z0, s(0')) ack(s(z0), 0') -> ack(z0, s(0')) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0', z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0')) -> s(z0) plus(z0, 0') -> z0 isZero(0') -> true isZero(s(z0)) -> false Types: DOUBLE :: false:true:0':s -> c1 c1 :: c2:c3:c4:c5:c6 -> c1 PERMUTE :: false:true:0':s -> false:true:0':s -> a:b:c -> c2:c3:c4:c5:c6 a :: a:b:c c2 :: c2:c3:c4:c5:c6 -> c17:c18 -> c2:c3:c4:c5:c6 isZero :: false:true:0':s -> false:true:0':s b :: a:b:c ISZERO :: false:true:0':s -> c17:c18 false :: false:true:0':s c3 :: c2:c3:c4:c5:c6 -> c9:c10:c11 -> c2:c3:c4:c5:c6 ack :: false:true:0':s -> false:true:0':s -> false:true:0':s p :: false:true:0':s -> false:true:0':s c :: a:b:c ACK :: false:true:0':s -> false:true:0':s -> c9:c10:c11 c4 :: c2:c3:c4:c5:c6 -> c7:c8 -> c2:c3:c4:c5:c6 P :: false:true:0':s -> c7:c8 true :: false:true:0':s c5 :: c2:c3:c4:c5:c6 c6 :: c2:c3:c4:c5:c6 -> c2:c3:c4:c5:c6 0' :: false:true:0':s c7 :: c7:c8 s :: false:true:0':s -> false:true:0':s c8 :: c7:c8 c9 :: c12:c13:c14:c15:c16 -> c9:c10:c11 PLUS :: false:true:0':s -> false:true:0':s -> c12:c13:c14:c15:c16 c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c12 :: c12:c13:c14:c15:c16 c13 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c14 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c15 :: c12:c13:c14:c15:c16 c16 :: c12:c13:c14:c15:c16 c17 :: c17:c18 c18 :: c17:c18 double :: false:true:0':s -> false:true:0':s permute :: false:true:0':s -> false:true:0':s -> a:b:c -> false:true:0':s plus :: false:true:0':s -> false:true:0':s -> false:true:0':s hole_c11_19 :: c1 hole_false:true:0':s2_19 :: false:true:0':s hole_c2:c3:c4:c5:c63_19 :: c2:c3:c4:c5:c6 hole_a:b:c4_19 :: a:b:c hole_c17:c185_19 :: c17:c18 hole_c9:c10:c116_19 :: c9:c10:c11 hole_c7:c87_19 :: c7:c8 hole_c12:c13:c14:c15:c168_19 :: c12:c13:c14:c15:c16 gen_false:true:0':s9_19 :: Nat -> false:true:0':s gen_c2:c3:c4:c5:c610_19 :: Nat -> c2:c3:c4:c5:c6 gen_c9:c10:c1111_19 :: Nat -> c9:c10:c11 gen_c12:c13:c14:c15:c1612_19 :: Nat -> c12:c13:c14:c15:c16 ---------------------------------------- (13) OrderProof (LOWER BOUND(ID)) Heuristically decided to analyse the following defined symbols: PERMUTE, ack, ACK, PLUS, permute, plus They will be analysed ascendingly in the following order: ack < PERMUTE ACK < PERMUTE ack < ACK ack < permute plus < ack PLUS < ACK ---------------------------------------- (14) Obligation: Innermost TRS: Rules: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0') -> c7 P(s(z0)) -> c8 ACK(0', z0) -> c9(PLUS(z0, s(0'))) ACK(s(z0), 0') -> c10(ACK(z0, s(0'))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0', z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0')) -> c15 PLUS(z0, 0') -> c16 ISZERO(0') -> c17 ISZERO(s(z0)) -> c18 double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0' permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0') -> 0' p(s(z0)) -> z0 ack(0', z0) -> plus(z0, s(0')) ack(s(z0), 0') -> ack(z0, s(0')) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0', z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0')) -> s(z0) plus(z0, 0') -> z0 isZero(0') -> true isZero(s(z0)) -> false Types: DOUBLE :: false:true:0':s -> c1 c1 :: c2:c3:c4:c5:c6 -> c1 PERMUTE :: false:true:0':s -> false:true:0':s -> a:b:c -> c2:c3:c4:c5:c6 a :: a:b:c c2 :: c2:c3:c4:c5:c6 -> c17:c18 -> c2:c3:c4:c5:c6 isZero :: false:true:0':s -> false:true:0':s b :: a:b:c ISZERO :: false:true:0':s -> c17:c18 false :: false:true:0':s c3 :: c2:c3:c4:c5:c6 -> c9:c10:c11 -> c2:c3:c4:c5:c6 ack :: false:true:0':s -> false:true:0':s -> false:true:0':s p :: false:true:0':s -> false:true:0':s c :: a:b:c ACK :: false:true:0':s -> false:true:0':s -> c9:c10:c11 c4 :: c2:c3:c4:c5:c6 -> c7:c8 -> c2:c3:c4:c5:c6 P :: false:true:0':s -> c7:c8 true :: false:true:0':s c5 :: c2:c3:c4:c5:c6 c6 :: c2:c3:c4:c5:c6 -> c2:c3:c4:c5:c6 0' :: false:true:0':s c7 :: c7:c8 s :: false:true:0':s -> false:true:0':s c8 :: c7:c8 c9 :: c12:c13:c14:c15:c16 -> c9:c10:c11 PLUS :: false:true:0':s -> false:true:0':s -> c12:c13:c14:c15:c16 c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c12 :: c12:c13:c14:c15:c16 c13 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c14 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c15 :: c12:c13:c14:c15:c16 c16 :: c12:c13:c14:c15:c16 c17 :: c17:c18 c18 :: c17:c18 double :: false:true:0':s -> false:true:0':s permute :: false:true:0':s -> false:true:0':s -> a:b:c -> false:true:0':s plus :: false:true:0':s -> false:true:0':s -> false:true:0':s hole_c11_19 :: c1 hole_false:true:0':s2_19 :: false:true:0':s hole_c2:c3:c4:c5:c63_19 :: c2:c3:c4:c5:c6 hole_a:b:c4_19 :: a:b:c hole_c17:c185_19 :: c17:c18 hole_c9:c10:c116_19 :: c9:c10:c11 hole_c7:c87_19 :: c7:c8 hole_c12:c13:c14:c15:c168_19 :: c12:c13:c14:c15:c16 gen_false:true:0':s9_19 :: Nat -> false:true:0':s gen_c2:c3:c4:c5:c610_19 :: Nat -> c2:c3:c4:c5:c6 gen_c9:c10:c1111_19 :: Nat -> c9:c10:c11 gen_c12:c13:c14:c15:c1612_19 :: Nat -> c12:c13:c14:c15:c16 Generator Equations: gen_false:true:0':s9_19(0) <=> true gen_false:true:0':s9_19(+(x, 1)) <=> s(gen_false:true:0':s9_19(x)) gen_c2:c3:c4:c5:c610_19(0) <=> c5 gen_c2:c3:c4:c5:c610_19(+(x, 1)) <=> c2(gen_c2:c3:c4:c5:c610_19(x), c17) gen_c9:c10:c1111_19(0) <=> c9(c12) gen_c9:c10:c1111_19(+(x, 1)) <=> c10(gen_c9:c10:c1111_19(x)) gen_c12:c13:c14:c15:c1612_19(0) <=> c12 gen_c12:c13:c14:c15:c1612_19(+(x, 1)) <=> c13(gen_c12:c13:c14:c15:c1612_19(x)) The following defined symbols remain to be analysed: PLUS, PERMUTE, ack, ACK, permute, plus They will be analysed ascendingly in the following order: ack < PERMUTE ACK < PERMUTE ack < ACK ack < permute plus < ack PLUS < ACK ---------------------------------------- (15) RewriteLemmaProof (LOWER BOUND(ID)) Proved the following rewrite lemma: PLUS(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, n14_19)))) -> *13_19, rt in Omega(n14_19) Induction Base: PLUS(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, 0)))) Induction Step: PLUS(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, +(n14_19, 1))))) ->_R^Omega(1) c14(PLUS(s(gen_false:true:0':s9_19(a)), gen_false:true:0':s9_19(+(2, *(2, n14_19))))) ->_IH c14(*13_19) We have rt in Omega(n^1) and sz in O(n). Thus, we have irc_R in Omega(n). ---------------------------------------- (16) Complex Obligation (BEST) ---------------------------------------- (17) Obligation: Proved the lower bound n^1 for the following obligation: Innermost TRS: Rules: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0') -> c7 P(s(z0)) -> c8 ACK(0', z0) -> c9(PLUS(z0, s(0'))) ACK(s(z0), 0') -> c10(ACK(z0, s(0'))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0', z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0')) -> c15 PLUS(z0, 0') -> c16 ISZERO(0') -> c17 ISZERO(s(z0)) -> c18 double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0' permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0') -> 0' p(s(z0)) -> z0 ack(0', z0) -> plus(z0, s(0')) ack(s(z0), 0') -> ack(z0, s(0')) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0', z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0')) -> s(z0) plus(z0, 0') -> z0 isZero(0') -> true isZero(s(z0)) -> false Types: DOUBLE :: false:true:0':s -> c1 c1 :: c2:c3:c4:c5:c6 -> c1 PERMUTE :: false:true:0':s -> false:true:0':s -> a:b:c -> c2:c3:c4:c5:c6 a :: a:b:c c2 :: c2:c3:c4:c5:c6 -> c17:c18 -> c2:c3:c4:c5:c6 isZero :: false:true:0':s -> false:true:0':s b :: a:b:c ISZERO :: false:true:0':s -> c17:c18 false :: false:true:0':s c3 :: c2:c3:c4:c5:c6 -> c9:c10:c11 -> c2:c3:c4:c5:c6 ack :: false:true:0':s -> false:true:0':s -> false:true:0':s p :: false:true:0':s -> false:true:0':s c :: a:b:c ACK :: false:true:0':s -> false:true:0':s -> c9:c10:c11 c4 :: c2:c3:c4:c5:c6 -> c7:c8 -> c2:c3:c4:c5:c6 P :: false:true:0':s -> c7:c8 true :: false:true:0':s c5 :: c2:c3:c4:c5:c6 c6 :: c2:c3:c4:c5:c6 -> c2:c3:c4:c5:c6 0' :: false:true:0':s c7 :: c7:c8 s :: false:true:0':s -> false:true:0':s c8 :: c7:c8 c9 :: c12:c13:c14:c15:c16 -> c9:c10:c11 PLUS :: false:true:0':s -> false:true:0':s -> c12:c13:c14:c15:c16 c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c12 :: c12:c13:c14:c15:c16 c13 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c14 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c15 :: c12:c13:c14:c15:c16 c16 :: c12:c13:c14:c15:c16 c17 :: c17:c18 c18 :: c17:c18 double :: false:true:0':s -> false:true:0':s permute :: false:true:0':s -> false:true:0':s -> a:b:c -> false:true:0':s plus :: false:true:0':s -> false:true:0':s -> false:true:0':s hole_c11_19 :: c1 hole_false:true:0':s2_19 :: false:true:0':s hole_c2:c3:c4:c5:c63_19 :: c2:c3:c4:c5:c6 hole_a:b:c4_19 :: a:b:c hole_c17:c185_19 :: c17:c18 hole_c9:c10:c116_19 :: c9:c10:c11 hole_c7:c87_19 :: c7:c8 hole_c12:c13:c14:c15:c168_19 :: c12:c13:c14:c15:c16 gen_false:true:0':s9_19 :: Nat -> false:true:0':s gen_c2:c3:c4:c5:c610_19 :: Nat -> c2:c3:c4:c5:c6 gen_c9:c10:c1111_19 :: Nat -> c9:c10:c11 gen_c12:c13:c14:c15:c1612_19 :: Nat -> c12:c13:c14:c15:c16 Generator Equations: gen_false:true:0':s9_19(0) <=> true gen_false:true:0':s9_19(+(x, 1)) <=> s(gen_false:true:0':s9_19(x)) gen_c2:c3:c4:c5:c610_19(0) <=> c5 gen_c2:c3:c4:c5:c610_19(+(x, 1)) <=> c2(gen_c2:c3:c4:c5:c610_19(x), c17) gen_c9:c10:c1111_19(0) <=> c9(c12) gen_c9:c10:c1111_19(+(x, 1)) <=> c10(gen_c9:c10:c1111_19(x)) gen_c12:c13:c14:c15:c1612_19(0) <=> c12 gen_c12:c13:c14:c15:c1612_19(+(x, 1)) <=> c13(gen_c12:c13:c14:c15:c1612_19(x)) The following defined symbols remain to be analysed: PLUS, PERMUTE, ack, ACK, permute, plus They will be analysed ascendingly in the following order: ack < PERMUTE ACK < PERMUTE ack < ACK ack < permute plus < ack PLUS < ACK ---------------------------------------- (18) LowerBoundPropagationProof (FINISHED) Propagated lower bound. ---------------------------------------- (19) BOUNDS(n^1, INF) ---------------------------------------- (20) Obligation: Innermost TRS: Rules: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0') -> c7 P(s(z0)) -> c8 ACK(0', z0) -> c9(PLUS(z0, s(0'))) ACK(s(z0), 0') -> c10(ACK(z0, s(0'))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0', z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0')) -> c15 PLUS(z0, 0') -> c16 ISZERO(0') -> c17 ISZERO(s(z0)) -> c18 double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0' permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0') -> 0' p(s(z0)) -> z0 ack(0', z0) -> plus(z0, s(0')) ack(s(z0), 0') -> ack(z0, s(0')) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0', z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0')) -> s(z0) plus(z0, 0') -> z0 isZero(0') -> true isZero(s(z0)) -> false Types: DOUBLE :: false:true:0':s -> c1 c1 :: c2:c3:c4:c5:c6 -> c1 PERMUTE :: false:true:0':s -> false:true:0':s -> a:b:c -> c2:c3:c4:c5:c6 a :: a:b:c c2 :: c2:c3:c4:c5:c6 -> c17:c18 -> c2:c3:c4:c5:c6 isZero :: false:true:0':s -> false:true:0':s b :: a:b:c ISZERO :: false:true:0':s -> c17:c18 false :: false:true:0':s c3 :: c2:c3:c4:c5:c6 -> c9:c10:c11 -> c2:c3:c4:c5:c6 ack :: false:true:0':s -> false:true:0':s -> false:true:0':s p :: false:true:0':s -> false:true:0':s c :: a:b:c ACK :: false:true:0':s -> false:true:0':s -> c9:c10:c11 c4 :: c2:c3:c4:c5:c6 -> c7:c8 -> c2:c3:c4:c5:c6 P :: false:true:0':s -> c7:c8 true :: false:true:0':s c5 :: c2:c3:c4:c5:c6 c6 :: c2:c3:c4:c5:c6 -> c2:c3:c4:c5:c6 0' :: false:true:0':s c7 :: c7:c8 s :: false:true:0':s -> false:true:0':s c8 :: c7:c8 c9 :: c12:c13:c14:c15:c16 -> c9:c10:c11 PLUS :: false:true:0':s -> false:true:0':s -> c12:c13:c14:c15:c16 c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c12 :: c12:c13:c14:c15:c16 c13 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c14 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c15 :: c12:c13:c14:c15:c16 c16 :: c12:c13:c14:c15:c16 c17 :: c17:c18 c18 :: c17:c18 double :: false:true:0':s -> false:true:0':s permute :: false:true:0':s -> false:true:0':s -> a:b:c -> false:true:0':s plus :: false:true:0':s -> false:true:0':s -> false:true:0':s hole_c11_19 :: c1 hole_false:true:0':s2_19 :: false:true:0':s hole_c2:c3:c4:c5:c63_19 :: c2:c3:c4:c5:c6 hole_a:b:c4_19 :: a:b:c hole_c17:c185_19 :: c17:c18 hole_c9:c10:c116_19 :: c9:c10:c11 hole_c7:c87_19 :: c7:c8 hole_c12:c13:c14:c15:c168_19 :: c12:c13:c14:c15:c16 gen_false:true:0':s9_19 :: Nat -> false:true:0':s gen_c2:c3:c4:c5:c610_19 :: Nat -> c2:c3:c4:c5:c6 gen_c9:c10:c1111_19 :: Nat -> c9:c10:c11 gen_c12:c13:c14:c15:c1612_19 :: Nat -> c12:c13:c14:c15:c16 Lemmas: PLUS(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, n14_19)))) -> *13_19, rt in Omega(n14_19) Generator Equations: gen_false:true:0':s9_19(0) <=> true gen_false:true:0':s9_19(+(x, 1)) <=> s(gen_false:true:0':s9_19(x)) gen_c2:c3:c4:c5:c610_19(0) <=> c5 gen_c2:c3:c4:c5:c610_19(+(x, 1)) <=> c2(gen_c2:c3:c4:c5:c610_19(x), c17) gen_c9:c10:c1111_19(0) <=> c9(c12) gen_c9:c10:c1111_19(+(x, 1)) <=> c10(gen_c9:c10:c1111_19(x)) gen_c12:c13:c14:c15:c1612_19(0) <=> c12 gen_c12:c13:c14:c15:c1612_19(+(x, 1)) <=> c13(gen_c12:c13:c14:c15:c1612_19(x)) The following defined symbols remain to be analysed: plus, PERMUTE, ack, ACK, permute They will be analysed ascendingly in the following order: ack < PERMUTE ACK < PERMUTE ack < ACK ack < permute plus < ack ---------------------------------------- (21) RewriteLemmaProof (LOWER BOUND(ID)) Proved the following rewrite lemma: plus(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, n3980_19)))) -> *13_19, rt in Omega(0) Induction Base: plus(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, 0)))) Induction Step: plus(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, +(n3980_19, 1))))) ->_R^Omega(0) s(plus(s(gen_false:true:0':s9_19(a)), gen_false:true:0':s9_19(+(2, *(2, n3980_19))))) ->_IH s(*13_19) We have rt in Omega(1) and sz in O(n). Thus, we have irc_R in Omega(n^0). ---------------------------------------- (22) Obligation: Innermost TRS: Rules: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0') -> c7 P(s(z0)) -> c8 ACK(0', z0) -> c9(PLUS(z0, s(0'))) ACK(s(z0), 0') -> c10(ACK(z0, s(0'))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0', z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0')) -> c15 PLUS(z0, 0') -> c16 ISZERO(0') -> c17 ISZERO(s(z0)) -> c18 double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0' permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0') -> 0' p(s(z0)) -> z0 ack(0', z0) -> plus(z0, s(0')) ack(s(z0), 0') -> ack(z0, s(0')) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0', z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0')) -> s(z0) plus(z0, 0') -> z0 isZero(0') -> true isZero(s(z0)) -> false Types: DOUBLE :: false:true:0':s -> c1 c1 :: c2:c3:c4:c5:c6 -> c1 PERMUTE :: false:true:0':s -> false:true:0':s -> a:b:c -> c2:c3:c4:c5:c6 a :: a:b:c c2 :: c2:c3:c4:c5:c6 -> c17:c18 -> c2:c3:c4:c5:c6 isZero :: false:true:0':s -> false:true:0':s b :: a:b:c ISZERO :: false:true:0':s -> c17:c18 false :: false:true:0':s c3 :: c2:c3:c4:c5:c6 -> c9:c10:c11 -> c2:c3:c4:c5:c6 ack :: false:true:0':s -> false:true:0':s -> false:true:0':s p :: false:true:0':s -> false:true:0':s c :: a:b:c ACK :: false:true:0':s -> false:true:0':s -> c9:c10:c11 c4 :: c2:c3:c4:c5:c6 -> c7:c8 -> c2:c3:c4:c5:c6 P :: false:true:0':s -> c7:c8 true :: false:true:0':s c5 :: c2:c3:c4:c5:c6 c6 :: c2:c3:c4:c5:c6 -> c2:c3:c4:c5:c6 0' :: false:true:0':s c7 :: c7:c8 s :: false:true:0':s -> false:true:0':s c8 :: c7:c8 c9 :: c12:c13:c14:c15:c16 -> c9:c10:c11 PLUS :: false:true:0':s -> false:true:0':s -> c12:c13:c14:c15:c16 c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c12 :: c12:c13:c14:c15:c16 c13 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c14 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c15 :: c12:c13:c14:c15:c16 c16 :: c12:c13:c14:c15:c16 c17 :: c17:c18 c18 :: c17:c18 double :: false:true:0':s -> false:true:0':s permute :: false:true:0':s -> false:true:0':s -> a:b:c -> false:true:0':s plus :: false:true:0':s -> false:true:0':s -> false:true:0':s hole_c11_19 :: c1 hole_false:true:0':s2_19 :: false:true:0':s hole_c2:c3:c4:c5:c63_19 :: c2:c3:c4:c5:c6 hole_a:b:c4_19 :: a:b:c hole_c17:c185_19 :: c17:c18 hole_c9:c10:c116_19 :: c9:c10:c11 hole_c7:c87_19 :: c7:c8 hole_c12:c13:c14:c15:c168_19 :: c12:c13:c14:c15:c16 gen_false:true:0':s9_19 :: Nat -> false:true:0':s gen_c2:c3:c4:c5:c610_19 :: Nat -> c2:c3:c4:c5:c6 gen_c9:c10:c1111_19 :: Nat -> c9:c10:c11 gen_c12:c13:c14:c15:c1612_19 :: Nat -> c12:c13:c14:c15:c16 Lemmas: PLUS(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, n14_19)))) -> *13_19, rt in Omega(n14_19) plus(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, n3980_19)))) -> *13_19, rt in Omega(0) Generator Equations: gen_false:true:0':s9_19(0) <=> true gen_false:true:0':s9_19(+(x, 1)) <=> s(gen_false:true:0':s9_19(x)) gen_c2:c3:c4:c5:c610_19(0) <=> c5 gen_c2:c3:c4:c5:c610_19(+(x, 1)) <=> c2(gen_c2:c3:c4:c5:c610_19(x), c17) gen_c9:c10:c1111_19(0) <=> c9(c12) gen_c9:c10:c1111_19(+(x, 1)) <=> c10(gen_c9:c10:c1111_19(x)) gen_c12:c13:c14:c15:c1612_19(0) <=> c12 gen_c12:c13:c14:c15:c1612_19(+(x, 1)) <=> c13(gen_c12:c13:c14:c15:c1612_19(x)) The following defined symbols remain to be analysed: ack, PERMUTE, ACK, permute They will be analysed ascendingly in the following order: ack < PERMUTE ACK < PERMUTE ack < ACK ack < permute ---------------------------------------- (23) RewriteLemmaProof (LOWER BOUND(ID)) Proved the following rewrite lemma: ack(gen_false:true:0':s9_19(1), gen_false:true:0':s9_19(+(1, n10639_19))) -> *13_19, rt in Omega(0) Induction Base: ack(gen_false:true:0':s9_19(1), gen_false:true:0':s9_19(+(1, 0))) Induction Step: ack(gen_false:true:0':s9_19(1), gen_false:true:0':s9_19(+(1, +(n10639_19, 1)))) ->_R^Omega(0) ack(gen_false:true:0':s9_19(0), ack(s(gen_false:true:0':s9_19(0)), gen_false:true:0':s9_19(+(1, n10639_19)))) ->_IH ack(gen_false:true:0':s9_19(0), *13_19) We have rt in Omega(1) and sz in O(n). Thus, we have irc_R in Omega(n^0). ---------------------------------------- (24) Obligation: Innermost TRS: Rules: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0') -> c7 P(s(z0)) -> c8 ACK(0', z0) -> c9(PLUS(z0, s(0'))) ACK(s(z0), 0') -> c10(ACK(z0, s(0'))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0', z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0')) -> c15 PLUS(z0, 0') -> c16 ISZERO(0') -> c17 ISZERO(s(z0)) -> c18 double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0' permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0') -> 0' p(s(z0)) -> z0 ack(0', z0) -> plus(z0, s(0')) ack(s(z0), 0') -> ack(z0, s(0')) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0', z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0')) -> s(z0) plus(z0, 0') -> z0 isZero(0') -> true isZero(s(z0)) -> false Types: DOUBLE :: false:true:0':s -> c1 c1 :: c2:c3:c4:c5:c6 -> c1 PERMUTE :: false:true:0':s -> false:true:0':s -> a:b:c -> c2:c3:c4:c5:c6 a :: a:b:c c2 :: c2:c3:c4:c5:c6 -> c17:c18 -> c2:c3:c4:c5:c6 isZero :: false:true:0':s -> false:true:0':s b :: a:b:c ISZERO :: false:true:0':s -> c17:c18 false :: false:true:0':s c3 :: c2:c3:c4:c5:c6 -> c9:c10:c11 -> c2:c3:c4:c5:c6 ack :: false:true:0':s -> false:true:0':s -> false:true:0':s p :: false:true:0':s -> false:true:0':s c :: a:b:c ACK :: false:true:0':s -> false:true:0':s -> c9:c10:c11 c4 :: c2:c3:c4:c5:c6 -> c7:c8 -> c2:c3:c4:c5:c6 P :: false:true:0':s -> c7:c8 true :: false:true:0':s c5 :: c2:c3:c4:c5:c6 c6 :: c2:c3:c4:c5:c6 -> c2:c3:c4:c5:c6 0' :: false:true:0':s c7 :: c7:c8 s :: false:true:0':s -> false:true:0':s c8 :: c7:c8 c9 :: c12:c13:c14:c15:c16 -> c9:c10:c11 PLUS :: false:true:0':s -> false:true:0':s -> c12:c13:c14:c15:c16 c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c12 :: c12:c13:c14:c15:c16 c13 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c14 :: c12:c13:c14:c15:c16 -> c12:c13:c14:c15:c16 c15 :: c12:c13:c14:c15:c16 c16 :: c12:c13:c14:c15:c16 c17 :: c17:c18 c18 :: c17:c18 double :: false:true:0':s -> false:true:0':s permute :: false:true:0':s -> false:true:0':s -> a:b:c -> false:true:0':s plus :: false:true:0':s -> false:true:0':s -> false:true:0':s hole_c11_19 :: c1 hole_false:true:0':s2_19 :: false:true:0':s hole_c2:c3:c4:c5:c63_19 :: c2:c3:c4:c5:c6 hole_a:b:c4_19 :: a:b:c hole_c17:c185_19 :: c17:c18 hole_c9:c10:c116_19 :: c9:c10:c11 hole_c7:c87_19 :: c7:c8 hole_c12:c13:c14:c15:c168_19 :: c12:c13:c14:c15:c16 gen_false:true:0':s9_19 :: Nat -> false:true:0':s gen_c2:c3:c4:c5:c610_19 :: Nat -> c2:c3:c4:c5:c6 gen_c9:c10:c1111_19 :: Nat -> c9:c10:c11 gen_c12:c13:c14:c15:c1612_19 :: Nat -> c12:c13:c14:c15:c16 Lemmas: PLUS(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, n14_19)))) -> *13_19, rt in Omega(n14_19) plus(gen_false:true:0':s9_19(a), gen_false:true:0':s9_19(+(2, *(2, n3980_19)))) -> *13_19, rt in Omega(0) ack(gen_false:true:0':s9_19(1), gen_false:true:0':s9_19(+(1, n10639_19))) -> *13_19, rt in Omega(0) Generator Equations: gen_false:true:0':s9_19(0) <=> true gen_false:true:0':s9_19(+(x, 1)) <=> s(gen_false:true:0':s9_19(x)) gen_c2:c3:c4:c5:c610_19(0) <=> c5 gen_c2:c3:c4:c5:c610_19(+(x, 1)) <=> c2(gen_c2:c3:c4:c5:c610_19(x), c17) gen_c9:c10:c1111_19(0) <=> c9(c12) gen_c9:c10:c1111_19(+(x, 1)) <=> c10(gen_c9:c10:c1111_19(x)) gen_c12:c13:c14:c15:c1612_19(0) <=> c12 gen_c12:c13:c14:c15:c1612_19(+(x, 1)) <=> c13(gen_c12:c13:c14:c15:c1612_19(x)) The following defined symbols remain to be analysed: ACK, PERMUTE, permute They will be analysed ascendingly in the following order: ACK < PERMUTE ---------------------------------------- (25) RelTrsToWeightedTrsProof (UPPER BOUND(ID)) Transformed relative TRS to weighted TRS ---------------------------------------- (26) Obligation: The Runtime Complexity (innermost) of the given CpxWeightedTrs could be proven to be BOUNDS(1, INF). The TRS R consists of the following rules: double(x) -> permute(x, x, a) [1] permute(x, y, a) -> permute(isZero(x), x, b) [1] permute(false, x, b) -> permute(ack(x, x), p(x), c) [1] permute(true, x, b) -> 0 [1] permute(y, x, c) -> s(s(permute(x, y, a))) [1] p(0) -> 0 [1] p(s(x)) -> x [1] ack(0, x) -> plus(x, s(0)) [1] ack(s(x), 0) -> ack(x, s(0)) [1] ack(s(x), s(y)) -> ack(x, ack(s(x), y)) [1] plus(0, y) -> y [1] plus(s(x), y) -> plus(x, s(y)) [1] plus(x, s(s(y))) -> s(plus(s(x), y)) [1] plus(x, s(0)) -> s(x) [1] plus(x, 0) -> x [1] isZero(0) -> true [1] isZero(s(x)) -> false [1] Rewrite Strategy: INNERMOST ---------------------------------------- (27) TypeInferenceProof (BOTH BOUNDS(ID, ID)) Infered types. ---------------------------------------- (28) Obligation: Runtime Complexity Weighted TRS with Types. The TRS R consists of the following rules: double(x) -> permute(x, x, a) [1] permute(x, y, a) -> permute(isZero(x), x, b) [1] permute(false, x, b) -> permute(ack(x, x), p(x), c) [1] permute(true, x, b) -> 0 [1] permute(y, x, c) -> s(s(permute(x, y, a))) [1] p(0) -> 0 [1] p(s(x)) -> x [1] ack(0, x) -> plus(x, s(0)) [1] ack(s(x), 0) -> ack(x, s(0)) [1] ack(s(x), s(y)) -> ack(x, ack(s(x), y)) [1] plus(0, y) -> y [1] plus(s(x), y) -> plus(x, s(y)) [1] plus(x, s(s(y))) -> s(plus(s(x), y)) [1] plus(x, s(0)) -> s(x) [1] plus(x, 0) -> x [1] isZero(0) -> true [1] isZero(s(x)) -> false [1] The TRS has the following type information: double :: false:true:0:s -> false:true:0:s permute :: false:true:0:s -> false:true:0:s -> a:b:c -> false:true:0:s a :: a:b:c isZero :: false:true:0:s -> false:true:0:s b :: a:b:c false :: false:true:0:s ack :: false:true:0:s -> false:true:0:s -> false:true:0:s p :: false:true:0:s -> false:true:0:s c :: a:b:c true :: false:true:0:s 0 :: false:true:0:s s :: false:true:0:s -> false:true:0:s plus :: false:true:0:s -> false:true:0:s -> false:true:0:s Rewrite Strategy: INNERMOST ---------------------------------------- (29) CompletionProof (UPPER BOUND(ID)) The transformation into a RNTS is sound, since: (a) The obligation is a constructor system where every type has a constant constructor, (b) The following defined symbols do not have to be completely defined, as they can never occur inside other defined symbols: double_1 permute_3 (c) The following functions are completely defined: isZero_1 ack_2 p_1 plus_2 Due to the following rules being added: isZero(v0) -> null_isZero [0] ack(v0, v1) -> null_ack [0] p(v0) -> null_p [0] plus(v0, v1) -> null_plus [0] And the following fresh constants: null_isZero, null_ack, null_p, null_plus ---------------------------------------- (30) Obligation: Runtime Complexity Weighted TRS where critical functions are completely defined. The underlying TRS is: Runtime Complexity Weighted TRS with Types. The TRS R consists of the following rules: double(x) -> permute(x, x, a) [1] permute(x, y, a) -> permute(isZero(x), x, b) [1] permute(false, x, b) -> permute(ack(x, x), p(x), c) [1] permute(true, x, b) -> 0 [1] permute(y, x, c) -> s(s(permute(x, y, a))) [1] p(0) -> 0 [1] p(s(x)) -> x [1] ack(0, x) -> plus(x, s(0)) [1] ack(s(x), 0) -> ack(x, s(0)) [1] ack(s(x), s(y)) -> ack(x, ack(s(x), y)) [1] plus(0, y) -> y [1] plus(s(x), y) -> plus(x, s(y)) [1] plus(x, s(s(y))) -> s(plus(s(x), y)) [1] plus(x, s(0)) -> s(x) [1] plus(x, 0) -> x [1] isZero(0) -> true [1] isZero(s(x)) -> false [1] isZero(v0) -> null_isZero [0] ack(v0, v1) -> null_ack [0] p(v0) -> null_p [0] plus(v0, v1) -> null_plus [0] The TRS has the following type information: double :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus permute :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus -> a:b:c -> false:true:0:s:null_isZero:null_ack:null_p:null_plus a :: a:b:c isZero :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus b :: a:b:c false :: false:true:0:s:null_isZero:null_ack:null_p:null_plus ack :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus p :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus c :: a:b:c true :: false:true:0:s:null_isZero:null_ack:null_p:null_plus 0 :: false:true:0:s:null_isZero:null_ack:null_p:null_plus s :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus plus :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus null_isZero :: false:true:0:s:null_isZero:null_ack:null_p:null_plus null_ack :: false:true:0:s:null_isZero:null_ack:null_p:null_plus null_p :: false:true:0:s:null_isZero:null_ack:null_p:null_plus null_plus :: false:true:0:s:null_isZero:null_ack:null_p:null_plus Rewrite Strategy: INNERMOST ---------------------------------------- (31) NarrowingProof (BOTH BOUNDS(ID, ID)) Narrowed the inner basic terms of all right-hand sides by a single narrowing step. ---------------------------------------- (32) Obligation: Runtime Complexity Weighted TRS where critical functions are completely defined. The underlying TRS is: Runtime Complexity Weighted TRS with Types. The TRS R consists of the following rules: double(x) -> permute(x, x, a) [1] permute(0, y, a) -> permute(true, 0, b) [2] permute(s(x'), y, a) -> permute(false, s(x'), b) [2] permute(x, y, a) -> permute(null_isZero, x, b) [1] permute(false, 0, b) -> permute(plus(0, s(0)), 0, c) [3] permute(false, 0, b) -> permute(plus(0, s(0)), null_p, c) [2] permute(false, s(x''), b) -> permute(ack(x'', ack(s(x''), x'')), x'', c) [3] permute(false, s(x''), b) -> permute(ack(x'', ack(s(x''), x'')), null_p, c) [2] permute(false, 0, b) -> permute(null_ack, 0, c) [2] permute(false, s(x1), b) -> permute(null_ack, x1, c) [2] permute(false, x, b) -> permute(null_ack, null_p, c) [1] permute(true, x, b) -> 0 [1] permute(y, x, c) -> s(s(permute(x, y, a))) [1] p(0) -> 0 [1] p(s(x)) -> x [1] ack(0, x) -> plus(x, s(0)) [1] ack(s(x), 0) -> ack(x, s(0)) [1] ack(s(x), s(0)) -> ack(x, ack(x, s(0))) [2] ack(s(x), s(s(y'))) -> ack(x, ack(x, ack(s(x), y'))) [2] ack(s(x), s(y)) -> ack(x, null_ack) [1] plus(0, y) -> y [1] plus(s(x), y) -> plus(x, s(y)) [1] plus(x, s(s(y))) -> s(plus(s(x), y)) [1] plus(x, s(0)) -> s(x) [1] plus(x, 0) -> x [1] isZero(0) -> true [1] isZero(s(x)) -> false [1] isZero(v0) -> null_isZero [0] ack(v0, v1) -> null_ack [0] p(v0) -> null_p [0] plus(v0, v1) -> null_plus [0] The TRS has the following type information: double :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus permute :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus -> a:b:c -> false:true:0:s:null_isZero:null_ack:null_p:null_plus a :: a:b:c isZero :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus b :: a:b:c false :: false:true:0:s:null_isZero:null_ack:null_p:null_plus ack :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus p :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus c :: a:b:c true :: false:true:0:s:null_isZero:null_ack:null_p:null_plus 0 :: false:true:0:s:null_isZero:null_ack:null_p:null_plus s :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus plus :: false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus -> false:true:0:s:null_isZero:null_ack:null_p:null_plus null_isZero :: false:true:0:s:null_isZero:null_ack:null_p:null_plus null_ack :: false:true:0:s:null_isZero:null_ack:null_p:null_plus null_p :: false:true:0:s:null_isZero:null_ack:null_p:null_plus null_plus :: false:true:0:s:null_isZero:null_ack:null_p:null_plus Rewrite Strategy: INNERMOST ---------------------------------------- (33) CpxTypedWeightedTrsToRntsProof (UPPER BOUND(ID)) Transformed the TRS into an over-approximating RNTS by (improved) Size Abstraction. The constant constructors are abstracted as follows: a => 0 b => 1 false => 1 c => 2 true => 2 0 => 0 null_isZero => 0 null_ack => 0 null_p => 0 null_plus => 0 ---------------------------------------- (34) Obligation: Complexity RNTS consisting of the following rules: ack(z, z') -{ 1 }-> plus(x, 1 + 0) :|: z' = x, x >= 0, z = 0 ack(z, z') -{ 2 }-> ack(x, ack(x, ack(1 + x, y'))) :|: z' = 1 + (1 + y'), x >= 0, y' >= 0, z = 1 + x ack(z, z') -{ 2 }-> ack(x, ack(x, 1 + 0)) :|: x >= 0, z' = 1 + 0, z = 1 + x ack(z, z') -{ 1 }-> ack(x, 0) :|: z' = 1 + y, x >= 0, y >= 0, z = 1 + x ack(z, z') -{ 1 }-> ack(x, 1 + 0) :|: x >= 0, z = 1 + x, z' = 0 ack(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 double(z) -{ 1 }-> permute(x, x, 0) :|: x >= 0, z = x isZero(z) -{ 1 }-> 2 :|: z = 0 isZero(z) -{ 1 }-> 1 :|: x >= 0, z = 1 + x isZero(z) -{ 0 }-> 0 :|: v0 >= 0, z = v0 p(z) -{ 1 }-> x :|: x >= 0, z = 1 + x p(z) -{ 1 }-> 0 :|: z = 0 p(z) -{ 0 }-> 0 :|: v0 >= 0, z = v0 permute(z, z', z'') -{ 3 }-> permute(plus(0, 1 + 0), 0, 2) :|: z = 1, z'' = 1, z' = 0 permute(z, z', z'') -{ 2 }-> permute(plus(0, 1 + 0), 0, 2) :|: z = 1, z'' = 1, z' = 0 permute(z, z', z'') -{ 3 }-> permute(ack(x'', ack(1 + x'', x'')), x'', 2) :|: z' = 1 + x'', z = 1, x'' >= 0, z'' = 1 permute(z, z', z'') -{ 2 }-> permute(ack(x'', ack(1 + x'', x'')), 0, 2) :|: z' = 1 + x'', z = 1, x'' >= 0, z'' = 1 permute(z, z', z'') -{ 2 }-> permute(2, 0, 1) :|: z'' = 0, y >= 0, z = 0, z' = y permute(z, z', z'') -{ 2 }-> permute(1, 1 + x', 1) :|: z = 1 + x', z'' = 0, x' >= 0, y >= 0, z' = y permute(z, z', z'') -{ 1 }-> permute(0, x, 1) :|: z'' = 0, x >= 0, y >= 0, z = x, z' = y permute(z, z', z'') -{ 2 }-> permute(0, x1, 2) :|: x1 >= 0, z = 1, z' = 1 + x1, z'' = 1 permute(z, z', z'') -{ 2 }-> permute(0, 0, 2) :|: z = 1, z'' = 1, z' = 0 permute(z, z', z'') -{ 1 }-> permute(0, 0, 2) :|: z' = x, z = 1, x >= 0, z'' = 1 permute(z, z', z'') -{ 1 }-> 0 :|: z = 2, z' = x, x >= 0, z'' = 1 permute(z, z', z'') -{ 1 }-> 1 + (1 + permute(x, y, 0)) :|: z' = x, y >= 0, x >= 0, z'' = 2, z = y plus(z, z') -{ 1 }-> x :|: x >= 0, z = x, z' = 0 plus(z, z') -{ 1 }-> y :|: y >= 0, z = 0, z' = y plus(z, z') -{ 1 }-> plus(x, 1 + y) :|: x >= 0, y >= 0, z = 1 + x, z' = y plus(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 plus(z, z') -{ 1 }-> 1 + x :|: x >= 0, z' = 1 + 0, z = x plus(z, z') -{ 1 }-> 1 + plus(1 + x, y) :|: z' = 1 + (1 + y), x >= 0, y >= 0, z = x ---------------------------------------- (35) SimplificationProof (BOTH BOUNDS(ID, ID)) Simplified the RNTS by moving equalities from the constraints into the right-hand sides. ---------------------------------------- (36) Obligation: Complexity RNTS consisting of the following rules: ack(z, z') -{ 1 }-> plus(z', 1 + 0) :|: z' >= 0, z = 0 ack(z, z') -{ 2 }-> ack(z - 1, ack(z - 1, ack(1 + (z - 1), z' - 2))) :|: z - 1 >= 0, z' - 2 >= 0 ack(z, z') -{ 2 }-> ack(z - 1, ack(z - 1, 1 + 0)) :|: z - 1 >= 0, z' = 1 + 0 ack(z, z') -{ 1 }-> ack(z - 1, 0) :|: z - 1 >= 0, z' - 1 >= 0 ack(z, z') -{ 1 }-> ack(z - 1, 1 + 0) :|: z - 1 >= 0, z' = 0 ack(z, z') -{ 0 }-> 0 :|: z >= 0, z' >= 0 double(z) -{ 1 }-> permute(z, z, 0) :|: z >= 0 isZero(z) -{ 1 }-> 2 :|: z = 0 isZero(z) -{ 1 }-> 1 :|: z - 1 >= 0 isZero(z) -{ 0 }-> 0 :|: z >= 0 p(z) -{ 1 }-> 0 :|: z = 0 p(z) -{ 0 }-> 0 :|: z >= 0 p(z) -{ 1 }-> z - 1 :|: z - 1 >= 0 permute(z, z', z'') -{ 3 }-> permute(plus(0, 1 + 0), 0, 2) :|: z = 1, z'' = 1, z' = 0 permute(z, z', z'') -{ 2 }-> permute(plus(0, 1 + 0), 0, 2) :|: z = 1, z'' = 1, z' = 0 permute(z, z', z'') -{ 2 }-> permute(ack(z' - 1, ack(1 + (z' - 1), z' - 1)), 0, 2) :|: z = 1, z' - 1 >= 0, z'' = 1 permute(z, z', z'') -{ 3 }-> permute(ack(z' - 1, ack(1 + (z' - 1), z' - 1)), z' - 1, 2) :|: z = 1, z' - 1 >= 0, z'' = 1 permute(z, z', z'') -{ 2 }-> permute(2, 0, 1) :|: z'' = 0, z' >= 0, z = 0 permute(z, z', z'') -{ 2 }-> permute(1, 1 + (z - 1), 1) :|: z'' = 0, z - 1 >= 0, z' >= 0 permute(z, z', z'') -{ 1 }-> permute(0, z, 1) :|: z'' = 0, z >= 0, z' >= 0 permute(z, z', z'') -{ 2 }-> permute(0, 0, 2) :|: z = 1, z'' = 1, z' = 0 permute(z, z', z'') -{ 1 }-> permute(0, 0, 2) :|: z = 1, z' >= 0, z'' = 1 permute(z, z', z'') -{ 2 }-> permute(0, z' - 1, 2) :|: z' - 1 >= 0, z = 1, z'' = 1 permute(z, z', z'') -{ 1 }-> 0 :|: z = 2, z' >= 0, z'' = 1 permute(z, z', z'') -{ 1 }-> 1 + (1 + permute(z', z, 0)) :|: z >= 0, z' >= 0, z'' = 2 plus(z, z') -{ 1 }-> z :|: z >= 0, z' = 0 plus(z, z') -{ 1 }-> z' :|: z' >= 0, z = 0 plus(z, z') -{ 1 }-> plus(z - 1, 1 + z') :|: z - 1 >= 0, z' >= 0 plus(z, z') -{ 0 }-> 0 :|: z >= 0, z' >= 0 plus(z, z') -{ 1 }-> 1 + z :|: z >= 0, z' = 1 + 0 plus(z, z') -{ 1 }-> 1 + plus(1 + z, z' - 2) :|: z >= 0, z' - 2 >= 0 ---------------------------------------- (37) CompletionProof (UPPER BOUND(ID)) The TRS is a completely defined constructor system, as every type has a constant constructor and the following rules were added: permute(v0, v1, v2) -> null_permute [0] p(v0) -> null_p [0] ack(v0, v1) -> null_ack [0] plus(v0, v1) -> null_plus [0] isZero(v0) -> null_isZero [0] And the following fresh constants: null_permute, null_p, null_ack, null_plus, null_isZero ---------------------------------------- (38) Obligation: Runtime Complexity Weighted TRS where all functions are completely defined. The underlying TRS is: Runtime Complexity Weighted TRS with Types. The TRS R consists of the following rules: double(x) -> permute(x, x, a) [1] permute(x, y, a) -> permute(isZero(x), x, b) [1] permute(false, x, b) -> permute(ack(x, x), p(x), c) [1] permute(true, x, b) -> 0 [1] permute(y, x, c) -> s(s(permute(x, y, a))) [1] p(0) -> 0 [1] p(s(x)) -> x [1] ack(0, x) -> plus(x, s(0)) [1] ack(s(x), 0) -> ack(x, s(0)) [1] ack(s(x), s(y)) -> ack(x, ack(s(x), y)) [1] plus(0, y) -> y [1] plus(s(x), y) -> plus(x, s(y)) [1] plus(x, s(s(y))) -> s(plus(s(x), y)) [1] plus(x, s(0)) -> s(x) [1] plus(x, 0) -> x [1] isZero(0) -> true [1] isZero(s(x)) -> false [1] permute(v0, v1, v2) -> null_permute [0] p(v0) -> null_p [0] ack(v0, v1) -> null_ack [0] plus(v0, v1) -> null_plus [0] isZero(v0) -> null_isZero [0] The TRS has the following type information: double :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero permute :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> a:b:c -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero a :: a:b:c isZero :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero b :: a:b:c false :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero ack :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero p :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero c :: a:b:c true :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero 0 :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero s :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero plus :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero -> false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero null_permute :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero null_p :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero null_ack :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero null_plus :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero null_isZero :: false:true:0:s:null_permute:null_p:null_ack:null_plus:null_isZero Rewrite Strategy: INNERMOST ---------------------------------------- (39) CpxTypedWeightedTrsToRntsProof (UPPER BOUND(ID)) Transformed the TRS into an over-approximating RNTS by (improved) Size Abstraction. The constant constructors are abstracted as follows: a => 0 b => 1 false => 1 c => 2 true => 2 0 => 0 null_permute => 0 null_p => 0 null_ack => 0 null_plus => 0 null_isZero => 0 ---------------------------------------- (40) Obligation: Complexity RNTS consisting of the following rules: ack(z, z') -{ 1 }-> plus(x, 1 + 0) :|: z' = x, x >= 0, z = 0 ack(z, z') -{ 1 }-> ack(x, ack(1 + x, y)) :|: z' = 1 + y, x >= 0, y >= 0, z = 1 + x ack(z, z') -{ 1 }-> ack(x, 1 + 0) :|: x >= 0, z = 1 + x, z' = 0 ack(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 double(z) -{ 1 }-> permute(x, x, 0) :|: x >= 0, z = x isZero(z) -{ 1 }-> 2 :|: z = 0 isZero(z) -{ 1 }-> 1 :|: x >= 0, z = 1 + x isZero(z) -{ 0 }-> 0 :|: v0 >= 0, z = v0 p(z) -{ 1 }-> x :|: x >= 0, z = 1 + x p(z) -{ 1 }-> 0 :|: z = 0 p(z) -{ 0 }-> 0 :|: v0 >= 0, z = v0 permute(z, z', z'') -{ 1 }-> permute(isZero(x), x, 1) :|: z'' = 0, x >= 0, y >= 0, z = x, z' = y permute(z, z', z'') -{ 1 }-> permute(ack(x, x), p(x), 2) :|: z' = x, z = 1, x >= 0, z'' = 1 permute(z, z', z'') -{ 1 }-> 0 :|: z = 2, z' = x, x >= 0, z'' = 1 permute(z, z', z'') -{ 0 }-> 0 :|: v0 >= 0, z'' = v2, v1 >= 0, z = v0, z' = v1, v2 >= 0 permute(z, z', z'') -{ 1 }-> 1 + (1 + permute(x, y, 0)) :|: z' = x, y >= 0, x >= 0, z'' = 2, z = y plus(z, z') -{ 1 }-> x :|: x >= 0, z = x, z' = 0 plus(z, z') -{ 1 }-> y :|: y >= 0, z = 0, z' = y plus(z, z') -{ 1 }-> plus(x, 1 + y) :|: x >= 0, y >= 0, z = 1 + x, z' = y plus(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 plus(z, z') -{ 1 }-> 1 + x :|: x >= 0, z' = 1 + 0, z = x plus(z, z') -{ 1 }-> 1 + plus(1 + x, y) :|: z' = 1 + (1 + y), x >= 0, y >= 0, z = x Only complete derivations are relevant for the runtime complexity. ---------------------------------------- (41) CpxTrsToCdtProof (UPPER BOUND(ID)) Converted Cpx (relative) TRS with rewrite strategy PARALLEL_INNERMOST to CDT ---------------------------------------- (42) Obligation: Complexity Dependency Tuples Problem Rules: double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0 permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0) -> 0 p(s(z0)) -> z0 ack(0, z0) -> plus(z0, s(0)) ack(s(z0), 0) -> ack(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0)) -> s(z0) plus(z0, 0) -> z0 isZero(0) -> true isZero(s(z0)) -> false Tuples: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0) -> c7 P(s(z0)) -> c8 ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0, z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0)) -> c15 PLUS(z0, 0) -> c16 ISZERO(0) -> c17 ISZERO(s(z0)) -> c18 S tuples: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(true, z0, b) -> c5 PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) P(0) -> c7 P(s(z0)) -> c8 ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(0, z0) -> c12 PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PLUS(z0, s(0)) -> c15 PLUS(z0, 0) -> c16 ISZERO(0) -> c17 ISZERO(s(z0)) -> c18 K tuples:none Defined Rule Symbols: double_1, permute_3, p_1, ack_2, plus_2, isZero_1 Defined Pair Symbols: DOUBLE_1, PERMUTE_3, P_1, ACK_2, PLUS_2, ISZERO_1 Compound Symbols: c1_1, c2_2, c3_2, c4_2, c5, c6_1, c7, c8, c9_1, c10_1, c11_2, c12, c13_1, c14_1, c15, c16, c17, c18 ---------------------------------------- (43) CdtLeafRemovalProof (ComplexityIfPolyImplication) Removed 1 leading nodes: DOUBLE(z0) -> c1(PERMUTE(z0, z0, a)) Removed 8 trailing nodes: ISZERO(0) -> c17 P(s(z0)) -> c8 PERMUTE(true, z0, b) -> c5 PLUS(z0, s(0)) -> c15 PLUS(z0, 0) -> c16 PLUS(0, z0) -> c12 P(0) -> c7 ISZERO(s(z0)) -> c18 ---------------------------------------- (44) Obligation: Complexity Dependency Tuples Problem Rules: double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0 permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0) -> 0 p(s(z0)) -> z0 ack(0, z0) -> plus(z0, s(0)) ack(s(z0), 0) -> ack(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0)) -> s(z0) plus(z0, 0) -> z0 isZero(0) -> true isZero(s(z0)) -> false Tuples: PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) S tuples: PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b), ISZERO(z0)) PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c), P(z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) K tuples:none Defined Rule Symbols: double_1, permute_3, p_1, ack_2, plus_2, isZero_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c2_2, c3_2, c4_2, c6_1, c9_1, c10_1, c11_2, c13_1, c14_1 ---------------------------------------- (45) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID)) Removed 2 trailing tuple parts ---------------------------------------- (46) Obligation: Complexity Dependency Tuples Problem Rules: double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0 permute(z0, z1, c) -> s(s(permute(z1, z0, a))) p(0) -> 0 p(s(z0)) -> z0 ack(0, z0) -> plus(z0, s(0)) ack(s(z0), 0) -> ack(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, s(0)) -> s(z0) plus(z0, 0) -> z0 isZero(0) -> true isZero(s(z0)) -> false Tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) S tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) K tuples:none Defined Rule Symbols: double_1, permute_3, p_1, ack_2, plus_2, isZero_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c3_2, c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c4_1 ---------------------------------------- (47) CdtUsableRulesProof (BOTH BOUNDS(ID, ID)) The following rules are not usable and were removed: double(z0) -> permute(z0, z0, a) permute(z0, z1, a) -> permute(isZero(z0), z0, b) permute(false, z0, b) -> permute(ack(z0, z0), p(z0), c) permute(true, z0, b) -> 0 permute(z0, z1, c) -> s(s(permute(z1, z0, a))) ---------------------------------------- (48) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 isZero(0) -> true isZero(s(z0)) -> false Tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) S tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1, isZero_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c3_2, c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c4_1 ---------------------------------------- (49) CdtToCpxRelTrsProof (BOTH BOUNDS(ID, ID)) Converted S to standard rules, and D \ S as well as R to relative rules. ---------------------------------------- (50) Obligation: The Runtime Complexity (innermost) of the given CpxRelTRS could be proven to be BOUNDS(1, INF). The TRS R consists of the following rules: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) The (relative) TRS S consists of the following rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 isZero(0) -> true isZero(s(z0)) -> false Rewrite Strategy: INNERMOST ---------------------------------------- (51) RelTrsToTrsProof (UPPER BOUND(ID)) transformed relative TRS to TRS ---------------------------------------- (52) Obligation: The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(1, INF). The TRS R consists of the following rules: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 isZero(0) -> true isZero(s(z0)) -> false S is empty. Rewrite Strategy: INNERMOST ---------------------------------------- (53) RelTrsToWeightedTrsProof (BOTH BOUNDS(ID, ID)) Transformed relative TRS to weighted TRS ---------------------------------------- (54) Obligation: The Runtime Complexity (innermost) of the given CpxWeightedTrs could be proven to be BOUNDS(1, INF). The TRS R consists of the following rules: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) [1] PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) [1] ACK(0, z0) -> c9(PLUS(z0, s(0))) [1] ACK(s(z0), 0) -> c10(ACK(z0, s(0))) [1] ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) [1] PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) [1] PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) [1] PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) [1] PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) [1] ack(0, z0) -> plus(z0, s(0)) [0] ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) [0] ack(s(z0), 0) -> ack(z0, s(0)) [0] plus(0, z0) -> z0 [0] plus(s(z0), z1) -> plus(z0, s(z1)) [0] plus(z0, s(0)) -> s(z0) [0] plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) [0] plus(z0, 0) -> z0 [0] p(0) -> 0 [0] p(s(z0)) -> z0 [0] isZero(0) -> true [0] isZero(s(z0)) -> false [0] Rewrite Strategy: INNERMOST ---------------------------------------- (55) TypeInferenceProof (BOTH BOUNDS(ID, ID)) Infered types. ---------------------------------------- (56) Obligation: Runtime Complexity Weighted TRS with Types. The TRS R consists of the following rules: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) [1] PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) [1] ACK(0, z0) -> c9(PLUS(z0, s(0))) [1] ACK(s(z0), 0) -> c10(ACK(z0, s(0))) [1] ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) [1] PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) [1] PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) [1] PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) [1] PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) [1] ack(0, z0) -> plus(z0, s(0)) [0] ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) [0] ack(s(z0), 0) -> ack(z0, s(0)) [0] plus(0, z0) -> z0 [0] plus(s(z0), z1) -> plus(z0, s(z1)) [0] plus(z0, s(0)) -> s(z0) [0] plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) [0] plus(z0, 0) -> z0 [0] p(0) -> 0 [0] p(s(z0)) -> z0 [0] isZero(0) -> true [0] isZero(s(z0)) -> false [0] The TRS has the following type information: PERMUTE :: false:0:s:true -> false:0:s:true -> b:c:a -> c3:c6:c2:c4 false :: false:0:s:true b :: b:c:a c3 :: c3:c6:c2:c4 -> c9:c10:c11 -> c3:c6:c2:c4 ack :: false:0:s:true -> false:0:s:true -> false:0:s:true p :: false:0:s:true -> false:0:s:true c :: b:c:a ACK :: false:0:s:true -> false:0:s:true -> c9:c10:c11 c6 :: c3:c6:c2:c4 -> c3:c6:c2:c4 a :: b:c:a 0 :: false:0:s:true c9 :: c13:c14 -> c9:c10:c11 PLUS :: false:0:s:true -> false:0:s:true -> c13:c14 s :: false:0:s:true -> false:0:s:true c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c13 :: c13:c14 -> c13:c14 c14 :: c13:c14 -> c13:c14 c2 :: c3:c6:c2:c4 -> c3:c6:c2:c4 isZero :: false:0:s:true -> false:0:s:true c4 :: c3:c6:c2:c4 -> c3:c6:c2:c4 plus :: false:0:s:true -> false:0:s:true -> false:0:s:true true :: false:0:s:true Rewrite Strategy: INNERMOST ---------------------------------------- (57) CompletionProof (UPPER BOUND(ID)) The transformation into a RNTS is sound, since: (a) The obligation is a constructor system where every type has a constant constructor, (b) The following defined symbols do not have to be completely defined, as they can never occur inside other defined symbols: PERMUTE_3 ACK_2 PLUS_2 (c) The following functions are completely defined: ack_2 plus_2 p_1 isZero_1 Due to the following rules being added: ack(v0, v1) -> null_ack [0] plus(v0, v1) -> null_plus [0] p(v0) -> null_p [0] isZero(v0) -> null_isZero [0] And the following fresh constants: null_ack, null_plus, null_p, null_isZero, const, const1, const2 ---------------------------------------- (58) Obligation: Runtime Complexity Weighted TRS where critical functions are completely defined. The underlying TRS is: Runtime Complexity Weighted TRS with Types. The TRS R consists of the following rules: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) [1] PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) [1] ACK(0, z0) -> c9(PLUS(z0, s(0))) [1] ACK(s(z0), 0) -> c10(ACK(z0, s(0))) [1] ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) [1] PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) [1] PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) [1] PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) [1] PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) [1] ack(0, z0) -> plus(z0, s(0)) [0] ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) [0] ack(s(z0), 0) -> ack(z0, s(0)) [0] plus(0, z0) -> z0 [0] plus(s(z0), z1) -> plus(z0, s(z1)) [0] plus(z0, s(0)) -> s(z0) [0] plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) [0] plus(z0, 0) -> z0 [0] p(0) -> 0 [0] p(s(z0)) -> z0 [0] isZero(0) -> true [0] isZero(s(z0)) -> false [0] ack(v0, v1) -> null_ack [0] plus(v0, v1) -> null_plus [0] p(v0) -> null_p [0] isZero(v0) -> null_isZero [0] The TRS has the following type information: PERMUTE :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> b:c:a -> c3:c6:c2:c4 false :: false:0:s:true:null_ack:null_plus:null_p:null_isZero b :: b:c:a c3 :: c3:c6:c2:c4 -> c9:c10:c11 -> c3:c6:c2:c4 ack :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero p :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c :: b:c:a ACK :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> c9:c10:c11 c6 :: c3:c6:c2:c4 -> c3:c6:c2:c4 a :: b:c:a 0 :: false:0:s:true:null_ack:null_plus:null_p:null_isZero c9 :: c13:c14 -> c9:c10:c11 PLUS :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> c13:c14 s :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c13 :: c13:c14 -> c13:c14 c14 :: c13:c14 -> c13:c14 c2 :: c3:c6:c2:c4 -> c3:c6:c2:c4 isZero :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c4 :: c3:c6:c2:c4 -> c3:c6:c2:c4 plus :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero true :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_ack :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_plus :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_p :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_isZero :: false:0:s:true:null_ack:null_plus:null_p:null_isZero const :: c3:c6:c2:c4 const1 :: c9:c10:c11 const2 :: c13:c14 Rewrite Strategy: INNERMOST ---------------------------------------- (59) NarrowingProof (BOTH BOUNDS(ID, ID)) Narrowed the inner basic terms of all right-hand sides by a single narrowing step. ---------------------------------------- (60) Obligation: Runtime Complexity Weighted TRS where critical functions are completely defined. The underlying TRS is: Runtime Complexity Weighted TRS with Types. The TRS R consists of the following rules: PERMUTE(false, 0, b) -> c3(PERMUTE(plus(0, s(0)), 0, c), ACK(0, 0)) [1] PERMUTE(false, 0, b) -> c3(PERMUTE(plus(0, s(0)), null_p, c), ACK(0, 0)) [1] PERMUTE(false, s(z0'), b) -> c3(PERMUTE(ack(z0', ack(s(z0'), z0')), z0', c), ACK(s(z0'), s(z0'))) [1] PERMUTE(false, s(z0'), b) -> c3(PERMUTE(ack(z0', ack(s(z0'), z0')), null_p, c), ACK(s(z0'), s(z0'))) [1] PERMUTE(false, 0, b) -> c3(PERMUTE(null_ack, 0, c), ACK(0, 0)) [1] PERMUTE(false, s(z0''), b) -> c3(PERMUTE(null_ack, z0'', c), ACK(s(z0''), s(z0''))) [1] PERMUTE(false, z0, b) -> c3(PERMUTE(null_ack, null_p, c), ACK(z0, z0)) [1] PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) [1] ACK(0, z0) -> c9(PLUS(z0, s(0))) [1] ACK(s(z0), 0) -> c10(ACK(z0, s(0))) [1] ACK(s(z0), s(s(z1'))) -> c11(ACK(z0, ack(z0, ack(s(z0), z1'))), ACK(s(z0), s(z1'))) [1] ACK(s(z0), s(0)) -> c11(ACK(z0, ack(z0, s(0))), ACK(s(z0), 0)) [1] ACK(s(z0), s(z1)) -> c11(ACK(z0, null_ack), ACK(s(z0), z1)) [1] PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) [1] PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) [1] PERMUTE(0, z1, a) -> c2(PERMUTE(true, 0, b)) [1] PERMUTE(s(z01), z1, a) -> c2(PERMUTE(false, s(z01), b)) [1] PERMUTE(z0, z1, a) -> c2(PERMUTE(null_isZero, z0, b)) [1] PERMUTE(false, 0, b) -> c4(PERMUTE(plus(0, s(0)), 0, c)) [1] PERMUTE(false, 0, b) -> c4(PERMUTE(plus(0, s(0)), null_p, c)) [1] PERMUTE(false, s(z02), b) -> c4(PERMUTE(ack(z02, ack(s(z02), z02)), z02, c)) [1] PERMUTE(false, s(z02), b) -> c4(PERMUTE(ack(z02, ack(s(z02), z02)), null_p, c)) [1] PERMUTE(false, 0, b) -> c4(PERMUTE(null_ack, 0, c)) [1] PERMUTE(false, s(z03), b) -> c4(PERMUTE(null_ack, z03, c)) [1] PERMUTE(false, z0, b) -> c4(PERMUTE(null_ack, null_p, c)) [1] ack(0, z0) -> plus(z0, s(0)) [0] ack(s(z0), s(s(z1''))) -> ack(z0, ack(z0, ack(s(z0), z1''))) [0] ack(s(z0), s(0)) -> ack(z0, ack(z0, s(0))) [0] ack(s(z0), s(z1)) -> ack(z0, null_ack) [0] ack(s(z0), 0) -> ack(z0, s(0)) [0] plus(0, z0) -> z0 [0] plus(s(z0), z1) -> plus(z0, s(z1)) [0] plus(z0, s(0)) -> s(z0) [0] plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) [0] plus(z0, 0) -> z0 [0] p(0) -> 0 [0] p(s(z0)) -> z0 [0] isZero(0) -> true [0] isZero(s(z0)) -> false [0] ack(v0, v1) -> null_ack [0] plus(v0, v1) -> null_plus [0] p(v0) -> null_p [0] isZero(v0) -> null_isZero [0] The TRS has the following type information: PERMUTE :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> b:c:a -> c3:c6:c2:c4 false :: false:0:s:true:null_ack:null_plus:null_p:null_isZero b :: b:c:a c3 :: c3:c6:c2:c4 -> c9:c10:c11 -> c3:c6:c2:c4 ack :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero p :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c :: b:c:a ACK :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> c9:c10:c11 c6 :: c3:c6:c2:c4 -> c3:c6:c2:c4 a :: b:c:a 0 :: false:0:s:true:null_ack:null_plus:null_p:null_isZero c9 :: c13:c14 -> c9:c10:c11 PLUS :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> c13:c14 s :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c10 :: c9:c10:c11 -> c9:c10:c11 c11 :: c9:c10:c11 -> c9:c10:c11 -> c9:c10:c11 c13 :: c13:c14 -> c13:c14 c14 :: c13:c14 -> c13:c14 c2 :: c3:c6:c2:c4 -> c3:c6:c2:c4 isZero :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c4 :: c3:c6:c2:c4 -> c3:c6:c2:c4 plus :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero true :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_ack :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_plus :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_p :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_isZero :: false:0:s:true:null_ack:null_plus:null_p:null_isZero const :: c3:c6:c2:c4 const1 :: c9:c10:c11 const2 :: c13:c14 Rewrite Strategy: INNERMOST ---------------------------------------- (61) CpxTypedWeightedTrsToRntsProof (UPPER BOUND(ID)) Transformed the TRS into an over-approximating RNTS by (improved) Size Abstraction. The constant constructors are abstracted as follows: false => 1 b => 1 c => 2 a => 0 0 => 0 true => 2 null_ack => 0 null_plus => 0 null_p => 0 null_isZero => 0 const => 0 const1 => 0 const2 => 0 ---------------------------------------- (62) Obligation: Complexity RNTS consisting of the following rules: ACK(z, z') -{ 1 }-> 1 + PLUS(z0, 1 + 0) :|: z0 >= 0, z = 0, z' = z0 ACK(z, z') -{ 1 }-> 1 + ACK(z0, 1 + 0) :|: z = 1 + z0, z0 >= 0, z' = 0 ACK(z, z') -{ 1 }-> 1 + ACK(z0, ack(z0, ack(1 + z0, z1'))) + ACK(1 + z0, 1 + z1') :|: z' = 1 + (1 + z1'), z = 1 + z0, z1' >= 0, z0 >= 0 ACK(z, z') -{ 1 }-> 1 + ACK(z0, ack(z0, 1 + 0)) + ACK(1 + z0, 0) :|: z = 1 + z0, z' = 1 + 0, z0 >= 0 ACK(z, z') -{ 1 }-> 1 + ACK(z0, 0) + ACK(1 + z0, z1) :|: z1 >= 0, z = 1 + z0, z0 >= 0, z' = 1 + z1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(z1, z0, 0) :|: z = z0, z1 >= 0, z' = z1, z0 >= 0, z'' = 2 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(plus(0, 1 + 0), 0, 2) :|: z = 1, z'' = 1, z' = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z02, ack(1 + z02, z02)), z02, 2) :|: z = 1, z02 >= 0, z' = 1 + z02, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z02, ack(1 + z02, z02)), 0, 2) :|: z = 1, z02 >= 0, z' = 1 + z02, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(2, 0, 1) :|: z'' = 0, z1 >= 0, z' = z1, z = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(1, 1 + z01, 1) :|: z'' = 0, z1 >= 0, z01 >= 0, z = 1 + z01, z' = z1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, z0, 1) :|: z'' = 0, z = z0, z1 >= 0, z' = z1, z0 >= 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, z03, 2) :|: z = 1, z' = 1 + z03, z03 >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, 0, 2) :|: z = 1, z'' = 1, z' = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, 0, 2) :|: z = 1, z0 >= 0, z' = z0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(plus(0, 1 + 0), 0, 2) + ACK(0, 0) :|: z = 1, z'' = 1, z' = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z0', ack(1 + z0', z0')), z0', 2) + ACK(1 + z0', 1 + z0') :|: z = 1, z0' >= 0, z' = 1 + z0', z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z0', ack(1 + z0', z0')), 0, 2) + ACK(1 + z0', 1 + z0') :|: z = 1, z0' >= 0, z' = 1 + z0', z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, z0'', 2) + ACK(1 + z0'', 1 + z0'') :|: z = 1, z' = 1 + z0'', z0'' >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, 0, 2) + ACK(z0, z0) :|: z = 1, z0 >= 0, z' = z0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, 0, 2) + ACK(0, 0) :|: z = 1, z'' = 1, z' = 0 PLUS(z, z') -{ 1 }-> 1 + PLUS(z0, 1 + z1) :|: z1 >= 0, z = 1 + z0, z' = z1, z0 >= 0 PLUS(z, z') -{ 1 }-> 1 + PLUS(1 + z0, z1) :|: z' = 1 + (1 + z1), z = z0, z1 >= 0, z0 >= 0 ack(z, z') -{ 0 }-> plus(z0, 1 + 0) :|: z0 >= 0, z = 0, z' = z0 ack(z, z') -{ 0 }-> ack(z0, ack(z0, ack(1 + z0, z1''))) :|: z' = 1 + (1 + z1''), z = 1 + z0, z0 >= 0, z1'' >= 0 ack(z, z') -{ 0 }-> ack(z0, ack(z0, 1 + 0)) :|: z = 1 + z0, z' = 1 + 0, z0 >= 0 ack(z, z') -{ 0 }-> ack(z0, 0) :|: z1 >= 0, z = 1 + z0, z0 >= 0, z' = 1 + z1 ack(z, z') -{ 0 }-> ack(z0, 1 + 0) :|: z = 1 + z0, z0 >= 0, z' = 0 ack(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 isZero(z) -{ 0 }-> 2 :|: z = 0 isZero(z) -{ 0 }-> 1 :|: z = 1 + z0, z0 >= 0 isZero(z) -{ 0 }-> 0 :|: v0 >= 0, z = v0 p(z) -{ 0 }-> z0 :|: z = 1 + z0, z0 >= 0 p(z) -{ 0 }-> 0 :|: z = 0 p(z) -{ 0 }-> 0 :|: v0 >= 0, z = v0 plus(z, z') -{ 0 }-> z0 :|: z0 >= 0, z = 0, z' = z0 plus(z, z') -{ 0 }-> z0 :|: z = z0, z0 >= 0, z' = 0 plus(z, z') -{ 0 }-> plus(z0, 1 + z1) :|: z1 >= 0, z = 1 + z0, z' = z1, z0 >= 0 plus(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 plus(z, z') -{ 0 }-> 1 + z0 :|: z = z0, z' = 1 + 0, z0 >= 0 plus(z, z') -{ 0 }-> 1 + plus(1 + z0, z1) :|: z' = 1 + (1 + z1), z = z0, z1 >= 0, z0 >= 0 ---------------------------------------- (63) SimplificationProof (BOTH BOUNDS(ID, ID)) Simplified the RNTS by moving equalities from the constraints into the right-hand sides. ---------------------------------------- (64) Obligation: Complexity RNTS consisting of the following rules: ACK(z, z') -{ 1 }-> 1 + PLUS(z', 1 + 0) :|: z' >= 0, z = 0 ACK(z, z') -{ 1 }-> 1 + ACK(z - 1, 1 + 0) :|: z - 1 >= 0, z' = 0 ACK(z, z') -{ 1 }-> 1 + ACK(z - 1, ack(z - 1, ack(1 + (z - 1), z' - 2))) + ACK(1 + (z - 1), 1 + (z' - 2)) :|: z' - 2 >= 0, z - 1 >= 0 ACK(z, z') -{ 1 }-> 1 + ACK(z - 1, ack(z - 1, 1 + 0)) + ACK(1 + (z - 1), 0) :|: z' = 1 + 0, z - 1 >= 0 ACK(z, z') -{ 1 }-> 1 + ACK(z - 1, 0) + ACK(1 + (z - 1), z' - 1) :|: z' - 1 >= 0, z - 1 >= 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(z', z, 0) :|: z' >= 0, z >= 0, z'' = 2 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(plus(0, 1 + 0), 0, 2) :|: z = 1, z'' = 1, z' = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z' - 1, ack(1 + (z' - 1), z' - 1)), 0, 2) :|: z = 1, z' - 1 >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z' - 1, ack(1 + (z' - 1), z' - 1)), z' - 1, 2) :|: z = 1, z' - 1 >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(2, 0, 1) :|: z'' = 0, z' >= 0, z = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(1, 1 + (z - 1), 1) :|: z'' = 0, z' >= 0, z - 1 >= 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, z, 1) :|: z'' = 0, z' >= 0, z >= 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, 0, 2) :|: z = 1, z'' = 1, z' = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, 0, 2) :|: z = 1, z' >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, z' - 1, 2) :|: z = 1, z' - 1 >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(plus(0, 1 + 0), 0, 2) + ACK(0, 0) :|: z = 1, z'' = 1, z' = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z' - 1, ack(1 + (z' - 1), z' - 1)), 0, 2) + ACK(1 + (z' - 1), 1 + (z' - 1)) :|: z = 1, z' - 1 >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z' - 1, ack(1 + (z' - 1), z' - 1)), z' - 1, 2) + ACK(1 + (z' - 1), 1 + (z' - 1)) :|: z = 1, z' - 1 >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, 0, 2) + ACK(z', z') :|: z = 1, z' >= 0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, 0, 2) + ACK(0, 0) :|: z = 1, z'' = 1, z' = 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(0, z' - 1, 2) + ACK(1 + (z' - 1), 1 + (z' - 1)) :|: z = 1, z' - 1 >= 0, z'' = 1 PLUS(z, z') -{ 1 }-> 1 + PLUS(z - 1, 1 + z') :|: z' >= 0, z - 1 >= 0 PLUS(z, z') -{ 1 }-> 1 + PLUS(1 + z, z' - 2) :|: z' - 2 >= 0, z >= 0 ack(z, z') -{ 0 }-> plus(z', 1 + 0) :|: z' >= 0, z = 0 ack(z, z') -{ 0 }-> ack(z - 1, ack(z - 1, ack(1 + (z - 1), z' - 2))) :|: z - 1 >= 0, z' - 2 >= 0 ack(z, z') -{ 0 }-> ack(z - 1, ack(z - 1, 1 + 0)) :|: z' = 1 + 0, z - 1 >= 0 ack(z, z') -{ 0 }-> ack(z - 1, 0) :|: z' - 1 >= 0, z - 1 >= 0 ack(z, z') -{ 0 }-> ack(z - 1, 1 + 0) :|: z - 1 >= 0, z' = 0 ack(z, z') -{ 0 }-> 0 :|: z >= 0, z' >= 0 isZero(z) -{ 0 }-> 2 :|: z = 0 isZero(z) -{ 0 }-> 1 :|: z - 1 >= 0 isZero(z) -{ 0 }-> 0 :|: z >= 0 p(z) -{ 0 }-> 0 :|: z = 0 p(z) -{ 0 }-> 0 :|: z >= 0 p(z) -{ 0 }-> z - 1 :|: z - 1 >= 0 plus(z, z') -{ 0 }-> z :|: z >= 0, z' = 0 plus(z, z') -{ 0 }-> z' :|: z' >= 0, z = 0 plus(z, z') -{ 0 }-> plus(z - 1, 1 + z') :|: z' >= 0, z - 1 >= 0 plus(z, z') -{ 0 }-> 0 :|: z >= 0, z' >= 0 plus(z, z') -{ 0 }-> 1 + z :|: z' = 1 + 0, z >= 0 plus(z, z') -{ 0 }-> 1 + plus(1 + z, z' - 2) :|: z' - 2 >= 0, z >= 0 ---------------------------------------- (65) CompletionProof (UPPER BOUND(ID)) The TRS is a completely defined constructor system, as every type has a constant constructor and the following rules were added: ack(v0, v1) -> null_ack [0] plus(v0, v1) -> null_plus [0] p(v0) -> null_p [0] isZero(v0) -> null_isZero [0] PERMUTE(v0, v1, v2) -> null_PERMUTE [0] ACK(v0, v1) -> null_ACK [0] PLUS(v0, v1) -> null_PLUS [0] And the following fresh constants: null_ack, null_plus, null_p, null_isZero, null_PERMUTE, null_ACK, null_PLUS ---------------------------------------- (66) Obligation: Runtime Complexity Weighted TRS where all functions are completely defined. The underlying TRS is: Runtime Complexity Weighted TRS with Types. The TRS R consists of the following rules: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) [1] PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) [1] ACK(0, z0) -> c9(PLUS(z0, s(0))) [1] ACK(s(z0), 0) -> c10(ACK(z0, s(0))) [1] ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) [1] PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) [1] PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) [1] PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) [1] PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) [1] ack(0, z0) -> plus(z0, s(0)) [0] ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) [0] ack(s(z0), 0) -> ack(z0, s(0)) [0] plus(0, z0) -> z0 [0] plus(s(z0), z1) -> plus(z0, s(z1)) [0] plus(z0, s(0)) -> s(z0) [0] plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) [0] plus(z0, 0) -> z0 [0] p(0) -> 0 [0] p(s(z0)) -> z0 [0] isZero(0) -> true [0] isZero(s(z0)) -> false [0] ack(v0, v1) -> null_ack [0] plus(v0, v1) -> null_plus [0] p(v0) -> null_p [0] isZero(v0) -> null_isZero [0] PERMUTE(v0, v1, v2) -> null_PERMUTE [0] ACK(v0, v1) -> null_ACK [0] PLUS(v0, v1) -> null_PLUS [0] The TRS has the following type information: PERMUTE :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> b:c:a -> c3:c6:c2:c4:null_PERMUTE false :: false:0:s:true:null_ack:null_plus:null_p:null_isZero b :: b:c:a c3 :: c3:c6:c2:c4:null_PERMUTE -> c9:c10:c11:null_ACK -> c3:c6:c2:c4:null_PERMUTE ack :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero p :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c :: b:c:a ACK :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> c9:c10:c11:null_ACK c6 :: c3:c6:c2:c4:null_PERMUTE -> c3:c6:c2:c4:null_PERMUTE a :: b:c:a 0 :: false:0:s:true:null_ack:null_plus:null_p:null_isZero c9 :: c13:c14:null_PLUS -> c9:c10:c11:null_ACK PLUS :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> c13:c14:null_PLUS s :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c10 :: c9:c10:c11:null_ACK -> c9:c10:c11:null_ACK c11 :: c9:c10:c11:null_ACK -> c9:c10:c11:null_ACK -> c9:c10:c11:null_ACK c13 :: c13:c14:null_PLUS -> c13:c14:null_PLUS c14 :: c13:c14:null_PLUS -> c13:c14:null_PLUS c2 :: c3:c6:c2:c4:null_PERMUTE -> c3:c6:c2:c4:null_PERMUTE isZero :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero c4 :: c3:c6:c2:c4:null_PERMUTE -> c3:c6:c2:c4:null_PERMUTE plus :: false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero -> false:0:s:true:null_ack:null_plus:null_p:null_isZero true :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_ack :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_plus :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_p :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_isZero :: false:0:s:true:null_ack:null_plus:null_p:null_isZero null_PERMUTE :: c3:c6:c2:c4:null_PERMUTE null_ACK :: c9:c10:c11:null_ACK null_PLUS :: c13:c14:null_PLUS Rewrite Strategy: INNERMOST ---------------------------------------- (67) CpxTypedWeightedTrsToRntsProof (UPPER BOUND(ID)) Transformed the TRS into an over-approximating RNTS by (improved) Size Abstraction. The constant constructors are abstracted as follows: false => 1 b => 1 c => 2 a => 0 0 => 0 true => 2 null_ack => 0 null_plus => 0 null_p => 0 null_isZero => 0 null_PERMUTE => 0 null_ACK => 0 null_PLUS => 0 ---------------------------------------- (68) Obligation: Complexity RNTS consisting of the following rules: ACK(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 ACK(z, z') -{ 1 }-> 1 + PLUS(z0, 1 + 0) :|: z0 >= 0, z = 0, z' = z0 ACK(z, z') -{ 1 }-> 1 + ACK(z0, 1 + 0) :|: z = 1 + z0, z0 >= 0, z' = 0 ACK(z, z') -{ 1 }-> 1 + ACK(z0, ack(1 + z0, z1)) + ACK(1 + z0, z1) :|: z1 >= 0, z = 1 + z0, z0 >= 0, z' = 1 + z1 PERMUTE(z, z', z'') -{ 0 }-> 0 :|: v0 >= 0, z'' = v2, v1 >= 0, z = v0, z' = v1, v2 >= 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(z1, z0, 0) :|: z = z0, z1 >= 0, z' = z1, z0 >= 0, z'' = 2 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(isZero(z0), z0, 1) :|: z'' = 0, z = z0, z1 >= 0, z' = z1, z0 >= 0 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z0, z0), p(z0), 2) :|: z = 1, z0 >= 0, z' = z0, z'' = 1 PERMUTE(z, z', z'') -{ 1 }-> 1 + PERMUTE(ack(z0, z0), p(z0), 2) + ACK(z0, z0) :|: z = 1, z0 >= 0, z' = z0, z'' = 1 PLUS(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 PLUS(z, z') -{ 1 }-> 1 + PLUS(z0, 1 + z1) :|: z1 >= 0, z = 1 + z0, z' = z1, z0 >= 0 PLUS(z, z') -{ 1 }-> 1 + PLUS(1 + z0, z1) :|: z' = 1 + (1 + z1), z = z0, z1 >= 0, z0 >= 0 ack(z, z') -{ 0 }-> plus(z0, 1 + 0) :|: z0 >= 0, z = 0, z' = z0 ack(z, z') -{ 0 }-> ack(z0, ack(1 + z0, z1)) :|: z1 >= 0, z = 1 + z0, z0 >= 0, z' = 1 + z1 ack(z, z') -{ 0 }-> ack(z0, 1 + 0) :|: z = 1 + z0, z0 >= 0, z' = 0 ack(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 isZero(z) -{ 0 }-> 2 :|: z = 0 isZero(z) -{ 0 }-> 1 :|: z = 1 + z0, z0 >= 0 isZero(z) -{ 0 }-> 0 :|: v0 >= 0, z = v0 p(z) -{ 0 }-> z0 :|: z = 1 + z0, z0 >= 0 p(z) -{ 0 }-> 0 :|: z = 0 p(z) -{ 0 }-> 0 :|: v0 >= 0, z = v0 plus(z, z') -{ 0 }-> z0 :|: z0 >= 0, z = 0, z' = z0 plus(z, z') -{ 0 }-> z0 :|: z = z0, z0 >= 0, z' = 0 plus(z, z') -{ 0 }-> plus(z0, 1 + z1) :|: z1 >= 0, z = 1 + z0, z' = z1, z0 >= 0 plus(z, z') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z = v0, z' = v1 plus(z, z') -{ 0 }-> 1 + z0 :|: z = z0, z' = 1 + 0, z0 >= 0 plus(z, z') -{ 0 }-> 1 + plus(1 + z0, z1) :|: z' = 1 + (1 + z1), z = z0, z1 >= 0, z0 >= 0 Only complete derivations are relevant for the runtime complexity. ---------------------------------------- (69) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(z0, z1, a) -> c2(PERMUTE(isZero(z0), z0, b)) by PERMUTE(0, x1, a) -> c2(PERMUTE(true, 0, b)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) ---------------------------------------- (70) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 isZero(0) -> true isZero(s(z0)) -> false Tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(0, x1, a) -> c2(PERMUTE(true, 0, b)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) S tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(0, x1, a) -> c2(PERMUTE(true, 0, b)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1, isZero_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c3_2, c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1 ---------------------------------------- (71) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID)) Removed 1 trailing nodes: PERMUTE(0, x1, a) -> c2(PERMUTE(true, 0, b)) ---------------------------------------- (72) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 isZero(0) -> true isZero(s(z0)) -> false Tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) S tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1, isZero_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c3_2, c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1 ---------------------------------------- (73) CdtUsableRulesProof (BOTH BOUNDS(ID, ID)) The following rules are not usable and were removed: isZero(0) -> true isZero(s(z0)) -> false ---------------------------------------- (74) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) S tuples: PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c3_2, c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1 ---------------------------------------- (75) CdtInstantiationProof (BOTH BOUNDS(ID, ID)) Use instantiation to replace PERMUTE(false, z0, b) -> c3(PERMUTE(ack(z0, z0), p(z0), c), ACK(z0, z0)) by PERMUTE(false, s(x0), b) -> c3(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c), ACK(s(x0), s(x0))) ---------------------------------------- (76) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(x0), b) -> c3(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c), ACK(s(x0), s(x0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(x0), b) -> c3(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c), ACK(s(x0), s(x0))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1, c3_2 ---------------------------------------- (77) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(x0), b) -> c3(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c), ACK(s(x0), s(x0))) by PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(s(z0), s(z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c), ACK(s(z0), s(z0))) ---------------------------------------- (78) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(s(z0), s(z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c), ACK(s(z0), s(z0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(s(z0), s(z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c), ACK(s(z0), s(z0))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1, c3_2 ---------------------------------------- (79) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(s(z0), s(z0)), z0, c), ACK(s(z0), s(z0))) by PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) ---------------------------------------- (80) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c), ACK(s(z0), s(z0))) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c), ACK(s(z0), s(z0))) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1, c3_2 ---------------------------------------- (81) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c), ACK(s(z0), s(z0))) by PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c), ACK(s(0), s(0))) PERMUTE(false, s(s(z1)), b) -> c3(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c), ACK(s(s(z1)), s(s(z1)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c), ACK(s(0), s(0))) ---------------------------------------- (82) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c), ACK(s(0), s(0))) PERMUTE(false, s(s(z1)), b) -> c3(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c), ACK(s(s(z1)), s(s(z1)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c), ACK(s(0), s(0))) PERMUTE(false, s(s(z1)), b) -> c3(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c), ACK(s(s(z1)), s(s(z1)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c), ACK(s(0), s(0))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1, c3_2 ---------------------------------------- (83) CdtRewritingProof (BOTH BOUNDS(ID, ID)) Used rewriting to replace PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c), ACK(s(0), s(0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) ---------------------------------------- (84) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z1)), b) -> c3(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c), ACK(s(s(z1)), s(s(z1)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z1)), b) -> c3(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c), ACK(s(s(z1)), s(s(z1)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1, c3_2 ---------------------------------------- (85) CdtRewritingProof (BOTH BOUNDS(ID, ID)) Used rewriting to replace PERMUTE(false, s(s(z1)), b) -> c3(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c), ACK(s(s(z1)), s(s(z1)))) by PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) ---------------------------------------- (86) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1, c3_2 ---------------------------------------- (87) CdtRewritingProof (BOTH BOUNDS(ID, ID)) Used rewriting to replace PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c), ACK(s(0), s(0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) ---------------------------------------- (88) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c4_1, c2_1, c3_2 ---------------------------------------- (89) CdtInstantiationProof (BOTH BOUNDS(ID, ID)) Use instantiation to replace PERMUTE(false, z0, b) -> c4(PERMUTE(ack(z0, z0), p(z0), c)) by PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) ---------------------------------------- (90) Obligation: Complexity Dependency Tuples Problem Rules: ack(0, z0) -> plus(z0, s(0)) ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(0) -> 0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c4_1 ---------------------------------------- (91) CdtUsableRulesProof (BOTH BOUNDS(ID, ID)) The following rules are not usable and were removed: p(0) -> 0 ---------------------------------------- (92) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c4_1 ---------------------------------------- (93) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) ---------------------------------------- (94) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c4_1 ---------------------------------------- (95) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) ---------------------------------------- (96) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) K tuples:none Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c4_1, c3_1 ---------------------------------------- (97) CdtRuleRemovalProof (UPPER BOUND(ADD(n^1))) Found a reduction pair which oriented the following tuples strictly. Hence they can be removed from S. PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) We considered the (Usable) Rules:none And the Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) The order we found is given by the following interpretation: Polynomial interpretation : POL(0) = 0 POL(ACK(x_1, x_2)) = 0 POL(PERMUTE(x_1, x_2, x_3)) = [1] + x_3 POL(PLUS(x_1, x_2)) = 0 POL(a) = 0 POL(ack(x_1, x_2)) = [1] POL(b) = 0 POL(c) = 0 POL(c10(x_1)) = x_1 POL(c11(x_1, x_2)) = x_1 + x_2 POL(c13(x_1)) = x_1 POL(c14(x_1)) = x_1 POL(c2(x_1)) = x_1 POL(c3(x_1)) = x_1 POL(c3(x_1, x_2)) = x_1 + x_2 POL(c4(x_1)) = x_1 POL(c6(x_1)) = x_1 POL(c9(x_1)) = x_1 POL(false) = [1] POL(p(x_1)) = [1] + x_1 POL(plus(x_1, x_2)) = [1] POL(s(x_1)) = [1] ---------------------------------------- (98) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c4_1, c3_1 ---------------------------------------- (99) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(x0), b) -> c4(PERMUTE(ack(s(x0), s(x0)), p(s(x0)), c)) by PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) ---------------------------------------- (100) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (101) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(s(0), 0)), 0, c), ACK(s(0), s(0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) ---------------------------------------- (102) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (103) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) ---------------------------------------- (104) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (105) CdtKnowledgeProof (BOTH BOUNDS(ID, ID)) The following tuples could be moved from S to K by knowledge propagation: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) ---------------------------------------- (106) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (107) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(0, s(0)), s(0)), 0, c), ACK(s(0), s(0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) ---------------------------------------- (108) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (109) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(s(0), s(0))), 0, c), ACK(s(0), s(0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) ---------------------------------------- (110) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (111) CdtKnowledgeProof (BOTH BOUNDS(ID, ID)) The following tuples could be moved from S to K by knowledge propagation: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) ---------------------------------------- (112) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (113) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(s(z0), s(z0)), z0, c)) by PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) ---------------------------------------- (114) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (115) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), p(s(z0)), c)) by PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) ---------------------------------------- (116) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) S tuples: PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c6_1, c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1 ---------------------------------------- (117) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID)) Use forward instantiation to replace PERMUTE(z0, z1, c) -> c6(PERMUTE(z1, z0, a)) by PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ---------------------------------------- (118) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) S tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(s(ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(plus(s(0), s(0)), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, plus(0, s(s(0)))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, s(s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1 ---------------------------------------- (119) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID)) Removed 8 trailing tuple parts ---------------------------------------- (120) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) S tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1 ---------------------------------------- (121) CdtKnowledgeProof (BOTH BOUNDS(ID, ID)) The following tuples could be moved from S to K by knowledge propagation: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) ---------------------------------------- (122) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) S tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1 ---------------------------------------- (123) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(z0), b) -> c3(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c), ACK(s(z0), s(z0))) by PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(s(z1)), b) -> c3(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), s(z1), c), ACK(s(s(z1)), s(s(z1)))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ---------------------------------------- (124) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) S tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(0), b) -> c3(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(PERMUTE(ack(0, ack(0, s(0))), 0, c), ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1 ---------------------------------------- (125) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID)) Removed 2 trailing tuple parts ---------------------------------------- (126) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) S tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1 ---------------------------------------- (127) CdtKnowledgeProof (BOTH BOUNDS(ID, ID)) The following tuples could be moved from S to K by knowledge propagation: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) ---------------------------------------- (128) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) S tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1 ---------------------------------------- (129) CdtRuleRemovalProof (UPPER BOUND(ADD(n^1))) Found a reduction pair which oriented the following tuples strictly. Hence they can be removed from S. PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) We considered the (Usable) Rules:none And the Tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) The order we found is given by the following interpretation: Polynomial interpretation : POL(0) = [1] POL(ACK(x_1, x_2)) = 0 POL(PERMUTE(x_1, x_2, x_3)) = [1] + x_3 POL(PLUS(x_1, x_2)) = 0 POL(a) = 0 POL(ack(x_1, x_2)) = [1] POL(b) = 0 POL(c) = 0 POL(c10(x_1)) = x_1 POL(c11(x_1, x_2)) = x_1 + x_2 POL(c13(x_1)) = x_1 POL(c14(x_1)) = x_1 POL(c2(x_1)) = x_1 POL(c3(x_1)) = x_1 POL(c3(x_1, x_2)) = x_1 + x_2 POL(c4(x_1)) = x_1 POL(c6(x_1)) = x_1 POL(c9(x_1)) = x_1 POL(false) = [1] POL(p(x_1)) = [1] POL(plus(x_1, x_2)) = [1] POL(s(x_1)) = 0 ---------------------------------------- (130) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) S tuples: ACK(0, z0) -> c9(PLUS(z0, s(0))) ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c9_1, c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1 ---------------------------------------- (131) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID)) Use forward instantiation to replace ACK(0, z0) -> c9(PLUS(z0, s(0))) by ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ---------------------------------------- (132) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) S tuples: ACK(s(z0), 0) -> c10(ACK(z0, s(0))) ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c10_1, c11_2, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1 ---------------------------------------- (133) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(z0), s(z1)) -> c11(ACK(z0, ack(s(z0), z1)), ACK(s(z0), z1)) by ACK(s(z0), s(s(z1))) -> c11(ACK(z0, ack(z0, ack(s(z0), z1))), ACK(s(z0), s(z1))) ACK(s(z0), s(0)) -> c11(ACK(z0, ack(z0, s(0))), ACK(s(z0), 0)) ---------------------------------------- (134) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(s(z0), 0) -> c10(ACK(z0, s(0))) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(z0), s(s(z1))) -> c11(ACK(z0, ack(z0, ack(s(z0), z1))), ACK(s(z0), s(z1))) ACK(s(z0), s(0)) -> c11(ACK(z0, ack(z0, s(0))), ACK(s(z0), 0)) S tuples: ACK(s(z0), 0) -> c10(ACK(z0, s(0))) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(z0), s(s(z1))) -> c11(ACK(z0, ack(z0, ack(s(z0), z1))), ACK(s(z0), s(z1))) ACK(s(z0), s(0)) -> c11(ACK(z0, ack(z0, s(0))), ACK(s(z0), 0)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c10_1, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2 ---------------------------------------- (135) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(z0), s(s(z1))) -> c11(ACK(z0, ack(z0, ack(s(z0), z1))), ACK(s(z0), s(z1))) by ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ---------------------------------------- (136) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(s(z0), 0) -> c10(ACK(z0, s(0))) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(z0), s(0)) -> c11(ACK(z0, ack(z0, s(0))), ACK(s(z0), 0)) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) S tuples: ACK(s(z0), 0) -> c10(ACK(z0, s(0))) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(z0), s(0)) -> c11(ACK(z0, ack(z0, s(0))), ACK(s(z0), 0)) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c10_1, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2 ---------------------------------------- (137) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(z0), s(0)) -> c11(ACK(z0, ack(z0, s(0))), ACK(s(z0), 0)) by ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c11(ACK(0, plus(s(0), s(0))), ACK(s(0), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ---------------------------------------- (138) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: ACK(s(z0), 0) -> c10(ACK(z0, s(0))) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c11(ACK(0, plus(s(0), s(0))), ACK(s(0), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) S tuples: ACK(s(z0), 0) -> c10(ACK(z0, s(0))) PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c11(ACK(0, plus(s(0), s(0))), ACK(s(0), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: ACK_2, PLUS_2, PERMUTE_3 Compound Symbols: c10_1, c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1 ---------------------------------------- (139) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID)) Use forward instantiation to replace ACK(s(z0), 0) -> c10(ACK(z0, s(0))) by ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ---------------------------------------- (140) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c11(ACK(0, plus(s(0), s(0))), ACK(s(0), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c11(ACK(0, plus(s(0), s(0))), ACK(s(0), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1, c10_1 ---------------------------------------- (141) CdtGraphSplitRhsProof (BOTH BOUNDS(ID, ID)) Split RHS of tuples not part of any SCC ---------------------------------------- (142) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1 ---------------------------------------- (143) CdtRewritingProof (BOTH BOUNDS(ID, ID)) Used rewriting to replace PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), p(s(0)), c)) by PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c)) ---------------------------------------- (144) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1 ---------------------------------------- (145) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID)) Removed 1 trailing nodes: PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c)) ---------------------------------------- (146) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1 ---------------------------------------- (147) CdtRewritingProof (BOTH BOUNDS(ID, ID)) Used rewriting to replace PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), p(s(s(z1))), c)) by PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ---------------------------------------- (148) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1 ---------------------------------------- (149) CdtRewritingProof (BOTH BOUNDS(ID, ID)) Used rewriting to replace PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), p(s(0)), c)) by PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), 0, c)) ---------------------------------------- (150) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), 0, c)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), 0, c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1 ---------------------------------------- (151) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID)) Removed 1 trailing nodes: PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), 0, c)) ---------------------------------------- (152) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 p(s(z0)) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2, p_1 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1 ---------------------------------------- (153) CdtUsableRulesProof (BOTH BOUNDS(ID, ID)) The following rules are not usable and were removed: p(s(z0)) -> z0 ---------------------------------------- (154) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c4_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1 ---------------------------------------- (155) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace PERMUTE(false, s(z0), b) -> c4(PERMUTE(ack(z0, ack(s(z0), z0)), z0, c)) by PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c)) PERMUTE(false, s(s(z1)), b) -> c4(PERMUTE(ack(s(z1), ack(s(z1), ack(s(s(z1)), z1))), s(z1), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), 0, c)) ---------------------------------------- (156) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), 0, c)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), 0, c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1, c4_1 ---------------------------------------- (157) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID)) Removed 2 trailing nodes: PERMUTE(false, s(0), b) -> c4(PERMUTE(plus(ack(s(0), 0), s(0)), 0, c)) PERMUTE(false, s(0), b) -> c4(PERMUTE(ack(0, ack(0, s(0))), 0, c)) ---------------------------------------- (158) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1, c4_1 ---------------------------------------- (159) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(s(x1))) -> c11(ACK(0, plus(ack(s(0), x1), s(0))), ACK(s(0), s(x1))) by ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ---------------------------------------- (160) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1, c4_1 ---------------------------------------- (161) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(z0), s(s(s(z1)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(s(z0), z1)))), ACK(s(z0), s(s(z1)))) by ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), x1)), s(0))), ACK(s(0), s(s(x1)))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ---------------------------------------- (162) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1, c4_1 ---------------------------------------- (163) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(z0), s(s(0))) -> c11(ACK(z0, ack(z0, ack(z0, s(0)))), ACK(s(z0), s(0))) by ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ---------------------------------------- (164) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_2, c11_1, c10_1, c1_1, c4_1 ---------------------------------------- (165) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(s(z0), 0))), ACK(s(s(z0)), 0)) by ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ---------------------------------------- (166) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (167) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(0)) -> c1(ACK(0, plus(s(0), s(0)))) by ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ---------------------------------------- (168) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (169) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) by ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ---------------------------------------- (170) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (171) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) by ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ---------------------------------------- (172) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(s(z1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), z1)), s(0))), ACK(s(0), s(s(z1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (173) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, plus(ack(0, ack(s(0), x1)), s(0))), ACK(s(0), s(s(x1)))) by ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ---------------------------------------- (174) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (175) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(s(s(x1)))) -> c11(ACK(0, ack(0, plus(ack(s(0), x1), s(0)))), ACK(s(0), s(s(x1)))) by ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ---------------------------------------- (176) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (177) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(z0), s(s(s(s(z1))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1))))), ACK(s(z0), s(s(s(z1))))) by ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), x1))), s(0))), ACK(s(0), s(s(s(x1))))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), x1)), s(0)))), ACK(s(0), s(s(s(x1))))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ---------------------------------------- (178) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (179) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(z0), s(s(s(0)))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, s(0))))), ACK(s(z0), s(s(0)))) by ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ---------------------------------------- (180) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (181) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(s(0))) -> c11(ACK(0, plus(ack(0, s(0)), s(0))), ACK(s(0), s(0))) by ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ---------------------------------------- (182) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (183) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(z0)), s(0))) by ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ---------------------------------------- (184) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (185) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(s(0), s(0)))), ACK(s(0), s(0))) by ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ---------------------------------------- (186) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (187) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(s(0), 0), s(0))), ACK(s(s(0)), 0)) by ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ---------------------------------------- (188) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (189) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(s(z0)), s(0)) -> c11(ACK(s(z0), ack(z0, ack(z0, s(0)))), ACK(s(s(z0)), 0)) by ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) ---------------------------------------- (190) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (191) CdtNarrowingProof (BOTH BOUNDS(ID, ID)) Use narrowing to replace ACK(s(0), s(0)) -> c1(ACK(0, plus(0, s(s(0))))) by ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(0)) -> c1(ACK(0, s(plus(s(0), 0)))) ---------------------------------------- (192) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, s(plus(s(0), 0)))) S tuples: PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, s(plus(s(0), 0)))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c13_1, c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2 ---------------------------------------- (193) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID)) Use forward instantiation to replace PLUS(s(z0), z1) -> c13(PLUS(z0, s(z1))) by PLUS(s(s(y0)), z1) -> c13(PLUS(s(y0), s(z1))) PLUS(s(z0), s(y1)) -> c13(PLUS(z0, s(s(y1)))) ---------------------------------------- (194) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, s(plus(s(0), 0)))) PLUS(s(s(y0)), z1) -> c13(PLUS(s(y0), s(z1))) PLUS(s(z0), s(y1)) -> c13(PLUS(z0, s(s(y1)))) S tuples: PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, s(plus(s(0), 0)))) PLUS(s(s(y0)), z1) -> c13(PLUS(s(y0), s(z1))) PLUS(s(z0), s(y1)) -> c13(PLUS(z0, s(s(y1)))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PLUS_2, PERMUTE_3, ACK_2 Compound Symbols: c14_1, c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2, c13_1 ---------------------------------------- (195) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID)) Use forward instantiation to replace PLUS(z0, s(s(z1))) -> c14(PLUS(s(z0), z1)) by PLUS(z0, s(s(s(s(y1))))) -> c14(PLUS(s(z0), s(s(y1)))) PLUS(s(y0), s(s(z1))) -> c14(PLUS(s(s(y0)), z1)) PLUS(z0, s(s(s(y1)))) -> c14(PLUS(s(z0), s(y1))) ---------------------------------------- (196) Obligation: Complexity Dependency Tuples Problem Rules: ack(s(z0), s(z1)) -> ack(z0, ack(s(z0), z1)) ack(s(z0), 0) -> ack(z0, s(0)) ack(0, z0) -> plus(z0, s(0)) plus(0, z0) -> z0 plus(s(z0), z1) -> plus(z0, s(z1)) plus(z0, s(0)) -> s(z0) plus(z0, s(s(z1))) -> s(plus(s(z0), z1)) plus(z0, 0) -> z0 Tuples: PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, s(plus(s(0), 0)))) PLUS(s(s(y0)), z1) -> c13(PLUS(s(y0), s(z1))) PLUS(s(z0), s(y1)) -> c13(PLUS(z0, s(s(y1)))) PLUS(z0, s(s(s(s(y1))))) -> c14(PLUS(s(z0), s(s(y1)))) PLUS(s(y0), s(s(z1))) -> c14(PLUS(s(s(y0)), z1)) PLUS(z0, s(s(s(y1)))) -> c14(PLUS(s(z0), s(y1))) S tuples: PERMUTE(s(z0), x1, a) -> c2(PERMUTE(false, s(z0), b)) PERMUTE(false, s(s(z0)), b) -> c3(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c), ACK(s(s(z0)), s(s(z0)))) PERMUTE(z0, s(y0), c) -> c6(PERMUTE(s(y0), z0, a)) ACK(0, s(y0)) -> c9(PLUS(s(y0), s(0))) ACK(s(x0), s(0)) -> c11(ACK(s(x0), 0)) ACK(s(0), 0) -> c10(ACK(0, s(0))) ACK(s(s(s(y0))), 0) -> c10(ACK(s(s(y0)), s(0))) ACK(s(s(0)), 0) -> c10(ACK(s(0), s(0))) ACK(s(s(y0)), 0) -> c10(ACK(s(y0), s(0))) ACK(s(0), s(0)) -> c1(ACK(s(0), 0)) PERMUTE(false, s(s(z0)), b) -> c4(PERMUTE(ack(s(z0), ack(s(z0), ack(s(s(z0)), z0))), s(z0), c)) ACK(s(0), s(s(x0))) -> c11(ACK(0, s(ack(s(0), x0))), ACK(s(0), s(x0))) ACK(s(0), s(s(x0))) -> c11(ACK(s(0), s(x0))) ACK(s(x0), s(s(s(x1)))) -> c11(ACK(s(x0), s(s(x1)))) ACK(s(x0), s(s(0))) -> c11(ACK(s(x0), s(0))) ACK(s(0), s(0)) -> c1(ACK(0, s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, s(ack(0, ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, plus(plus(ack(s(0), x0), s(0)), s(0))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, plus(ack(0, ack(0, ack(s(0), z1))), s(0))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, plus(ack(0, ack(0, s(0))), s(0))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(s(0), s(s(x0)))) ACK(s(0), s(s(0))) -> c11(ACK(0, s(ack(0, s(0)))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, plus(plus(s(0), s(0)), s(0))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(s(0), s(0))) ACK(s(0), s(s(s(x0)))) -> c11(ACK(0, ack(0, s(ack(s(0), x0)))), ACK(s(0), s(s(x0)))) ACK(s(0), s(s(s(s(z1))))) -> c11(ACK(0, ack(0, plus(ack(0, ack(s(0), z1)), s(0)))), ACK(s(0), s(s(s(z1))))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, plus(ack(0, s(0)), s(0)))), ACK(s(0), s(s(0)))) ACK(s(0), s(s(s(s(x1))))) -> c11(ACK(0, ack(0, ack(0, plus(ack(s(0), x1), s(0))))), ACK(s(0), s(s(s(x1))))) ACK(s(z0), s(s(s(s(s(z1)))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, ack(s(z0), z1)))))), ACK(s(z0), s(s(s(s(z1)))))) ACK(s(z0), s(s(s(s(0))))) -> c11(ACK(z0, ack(z0, ack(z0, ack(z0, ack(z0, s(0)))))), ACK(s(z0), s(s(s(0))))) ACK(s(x0), s(s(s(s(x1))))) -> c11(ACK(s(x0), s(s(s(x1))))) ACK(s(s(z0)), s(s(s(0)))) -> c11(ACK(s(z0), ack(s(z0), ack(s(z0), ack(z0, ack(s(z0), 0))))), ACK(s(s(z0)), s(s(0)))) ACK(s(0), s(s(s(0)))) -> c11(ACK(0, ack(0, ack(0, plus(s(0), s(0))))), ACK(s(0), s(s(0)))) ACK(s(x0), s(s(s(0)))) -> c11(ACK(s(x0), s(s(0)))) ACK(s(s(0)), s(s(0))) -> c11(ACK(s(0), ack(s(0), plus(ack(s(0), 0), s(0)))), ACK(s(s(0)), s(0))) ACK(s(s(z0)), s(s(0))) -> c11(ACK(s(z0), ack(s(z0), ack(z0, ack(z0, s(0))))), ACK(s(s(z0)), s(0))) ACK(s(s(x0)), s(s(0))) -> c11(ACK(s(s(x0)), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, plus(0, s(s(0))))), ACK(s(0), s(0))) ACK(s(0), s(s(0))) -> c11(ACK(0, ack(0, s(s(0)))), ACK(s(0), s(0))) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), s(ack(s(0), 0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), plus(ack(0, s(0)), s(0))), ACK(s(s(0)), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(s(0)), 0)) ACK(s(s(s(z0))), s(0)) -> c11(ACK(s(s(z0)), ack(s(z0), ack(z0, ack(s(z0), 0)))), ACK(s(s(s(z0))), 0)) ACK(s(s(0)), s(0)) -> c11(ACK(s(0), ack(0, plus(s(0), s(0)))), ACK(s(s(0)), 0)) ACK(s(s(x0)), s(0)) -> c11(ACK(s(s(x0)), 0)) ACK(s(0), s(0)) -> c1(ACK(0, s(plus(s(0), 0)))) PLUS(s(s(y0)), z1) -> c13(PLUS(s(y0), s(z1))) PLUS(s(z0), s(y1)) -> c13(PLUS(z0, s(s(y1)))) PLUS(z0, s(s(s(s(y1))))) -> c14(PLUS(s(z0), s(s(y1)))) PLUS(s(y0), s(s(z1))) -> c14(PLUS(s(s(y0)), z1)) PLUS(z0, s(s(s(y1)))) -> c14(PLUS(s(z0), s(y1))) K tuples: PERMUTE(false, s(0), b) -> c3(ACK(s(0), s(0))) PERMUTE(false, s(x0), b) -> c3(ACK(s(x0), s(x0))) Defined Rule Symbols: ack_2, plus_2 Defined Pair Symbols: PERMUTE_3, ACK_2, PLUS_2 Compound Symbols: c2_1, c3_2, c3_1, c6_1, c9_1, c11_1, c10_1, c1_1, c4_1, c11_2, c13_1, c14_1