3.67/1.81 YES 3.67/1.82 proof of /export/starexec/sandbox2/benchmark/theBenchmark.xml 3.67/1.82 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 3.67/1.82 3.67/1.82 3.67/1.82 Termination w.r.t. Q of the given QTRS could be proven: 3.67/1.82 3.67/1.82 (0) QTRS 3.67/1.82 (1) DependencyPairsProof [EQUIVALENT, 13 ms] 3.67/1.82 (2) QDP 3.67/1.82 (3) DependencyGraphProof [EQUIVALENT, 0 ms] 3.67/1.82 (4) QDP 3.67/1.82 (5) TransformationProof [EQUIVALENT, 0 ms] 3.67/1.82 (6) QDP 3.67/1.82 (7) DependencyGraphProof [EQUIVALENT, 0 ms] 3.67/1.82 (8) QDP 3.67/1.82 (9) UsableRulesProof [EQUIVALENT, 0 ms] 3.67/1.82 (10) QDP 3.67/1.82 (11) QReductionProof [EQUIVALENT, 0 ms] 3.67/1.82 (12) QDP 3.67/1.82 (13) TransformationProof [EQUIVALENT, 0 ms] 3.67/1.82 (14) QDP 3.67/1.82 (15) TransformationProof [EQUIVALENT, 0 ms] 3.67/1.82 (16) QDP 3.67/1.82 (17) DependencyGraphProof [EQUIVALENT, 0 ms] 3.67/1.82 (18) TRUE 3.67/1.82 3.67/1.82 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (0) 3.67/1.82 Obligation: 3.67/1.82 Q restricted rewrite system: 3.67/1.82 The TRS R consists of the following rules: 3.67/1.82 3.67/1.82 f(a(x), y, s(z), u) -> f(a(b), y, z, g(x, y, s(z), u)) 3.67/1.82 g(x, y, z, u) -> h(x, y, z, u) 3.67/1.82 h(b, y, z, u) -> f(y, y, z, u) 3.67/1.82 a(b) -> c 3.67/1.82 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 f(a(x0), x1, s(x2), x3) 3.67/1.82 g(x0, x1, x2, x3) 3.67/1.82 h(b, x0, x1, x2) 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (1) DependencyPairsProof (EQUIVALENT) 3.67/1.82 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (2) 3.67/1.82 Obligation: 3.67/1.82 Q DP problem: 3.67/1.82 The TRS P consists of the following rules: 3.67/1.82 3.67/1.82 F(a(x), y, s(z), u) -> F(a(b), y, z, g(x, y, s(z), u)) 3.67/1.82 F(a(x), y, s(z), u) -> A(b) 3.67/1.82 F(a(x), y, s(z), u) -> G(x, y, s(z), u) 3.67/1.82 G(x, y, z, u) -> H(x, y, z, u) 3.67/1.82 H(b, y, z, u) -> F(y, y, z, u) 3.67/1.82 3.67/1.82 The TRS R consists of the following rules: 3.67/1.82 3.67/1.82 f(a(x), y, s(z), u) -> f(a(b), y, z, g(x, y, s(z), u)) 3.67/1.82 g(x, y, z, u) -> h(x, y, z, u) 3.67/1.82 h(b, y, z, u) -> f(y, y, z, u) 3.67/1.82 a(b) -> c 3.67/1.82 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 f(a(x0), x1, s(x2), x3) 3.67/1.82 g(x0, x1, x2, x3) 3.67/1.82 h(b, x0, x1, x2) 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 We have to consider all minimal (P,Q,R)-chains. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (3) DependencyGraphProof (EQUIVALENT) 3.67/1.82 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 1 less node. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (4) 3.67/1.82 Obligation: 3.67/1.82 Q DP problem: 3.67/1.82 The TRS P consists of the following rules: 3.67/1.82 3.67/1.82 F(a(x), y, s(z), u) -> G(x, y, s(z), u) 3.67/1.82 G(x, y, z, u) -> H(x, y, z, u) 3.67/1.82 H(b, y, z, u) -> F(y, y, z, u) 3.67/1.82 F(a(x), y, s(z), u) -> F(a(b), y, z, g(x, y, s(z), u)) 3.67/1.82 3.67/1.82 The TRS R consists of the following rules: 3.67/1.82 3.67/1.82 f(a(x), y, s(z), u) -> f(a(b), y, z, g(x, y, s(z), u)) 3.67/1.82 g(x, y, z, u) -> h(x, y, z, u) 3.67/1.82 h(b, y, z, u) -> f(y, y, z, u) 3.67/1.82 a(b) -> c 3.67/1.82 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 f(a(x0), x1, s(x2), x3) 3.67/1.82 g(x0, x1, x2, x3) 3.67/1.82 h(b, x0, x1, x2) 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 We have to consider all minimal (P,Q,R)-chains. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (5) TransformationProof (EQUIVALENT) 3.67/1.82 By rewriting [LPAR04] the rule F(a(x), y, s(z), u) -> F(a(b), y, z, g(x, y, s(z), u)) at position [0] we obtained the following new rules [LPAR04]: 3.67/1.82 3.67/1.82 (F(a(x), y, s(z), u) -> F(c, y, z, g(x, y, s(z), u)),F(a(x), y, s(z), u) -> F(c, y, z, g(x, y, s(z), u))) 3.67/1.82 3.67/1.82 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (6) 3.67/1.82 Obligation: 3.67/1.82 Q DP problem: 3.67/1.82 The TRS P consists of the following rules: 3.67/1.82 3.67/1.82 F(a(x), y, s(z), u) -> G(x, y, s(z), u) 3.67/1.82 G(x, y, z, u) -> H(x, y, z, u) 3.67/1.82 H(b, y, z, u) -> F(y, y, z, u) 3.67/1.82 F(a(x), y, s(z), u) -> F(c, y, z, g(x, y, s(z), u)) 3.67/1.82 3.67/1.82 The TRS R consists of the following rules: 3.67/1.82 3.67/1.82 f(a(x), y, s(z), u) -> f(a(b), y, z, g(x, y, s(z), u)) 3.67/1.82 g(x, y, z, u) -> h(x, y, z, u) 3.67/1.82 h(b, y, z, u) -> f(y, y, z, u) 3.67/1.82 a(b) -> c 3.67/1.82 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 f(a(x0), x1, s(x2), x3) 3.67/1.82 g(x0, x1, x2, x3) 3.67/1.82 h(b, x0, x1, x2) 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 We have to consider all minimal (P,Q,R)-chains. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (7) DependencyGraphProof (EQUIVALENT) 3.67/1.82 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 1 less node. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (8) 3.67/1.82 Obligation: 3.67/1.82 Q DP problem: 3.67/1.82 The TRS P consists of the following rules: 3.67/1.82 3.67/1.82 G(x, y, z, u) -> H(x, y, z, u) 3.67/1.82 H(b, y, z, u) -> F(y, y, z, u) 3.67/1.82 F(a(x), y, s(z), u) -> G(x, y, s(z), u) 3.67/1.82 3.67/1.82 The TRS R consists of the following rules: 3.67/1.82 3.67/1.82 f(a(x), y, s(z), u) -> f(a(b), y, z, g(x, y, s(z), u)) 3.67/1.82 g(x, y, z, u) -> h(x, y, z, u) 3.67/1.82 h(b, y, z, u) -> f(y, y, z, u) 3.67/1.82 a(b) -> c 3.67/1.82 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 f(a(x0), x1, s(x2), x3) 3.67/1.82 g(x0, x1, x2, x3) 3.67/1.82 h(b, x0, x1, x2) 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 We have to consider all minimal (P,Q,R)-chains. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (9) UsableRulesProof (EQUIVALENT) 3.67/1.82 As all Q-normal forms are R-normal forms we are in the innermost case. Hence, by the usable rules processor [LPAR04] we can delete all non-usable rules [FROCOS05] from R. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (10) 3.67/1.82 Obligation: 3.67/1.82 Q DP problem: 3.67/1.82 The TRS P consists of the following rules: 3.67/1.82 3.67/1.82 G(x, y, z, u) -> H(x, y, z, u) 3.67/1.82 H(b, y, z, u) -> F(y, y, z, u) 3.67/1.82 F(a(x), y, s(z), u) -> G(x, y, s(z), u) 3.67/1.82 3.67/1.82 R is empty. 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 f(a(x0), x1, s(x2), x3) 3.67/1.82 g(x0, x1, x2, x3) 3.67/1.82 h(b, x0, x1, x2) 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 We have to consider all minimal (P,Q,R)-chains. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (11) QReductionProof (EQUIVALENT) 3.67/1.82 We deleted the following terms from Q as each root-symbol of these terms does neither occur in P nor in R.[THIEMANN]. 3.67/1.82 3.67/1.82 f(a(x0), x1, s(x2), x3) 3.67/1.82 g(x0, x1, x2, x3) 3.67/1.82 h(b, x0, x1, x2) 3.67/1.82 3.67/1.82 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (12) 3.67/1.82 Obligation: 3.67/1.82 Q DP problem: 3.67/1.82 The TRS P consists of the following rules: 3.67/1.82 3.67/1.82 G(x, y, z, u) -> H(x, y, z, u) 3.67/1.82 H(b, y, z, u) -> F(y, y, z, u) 3.67/1.82 F(a(x), y, s(z), u) -> G(x, y, s(z), u) 3.67/1.82 3.67/1.82 R is empty. 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 We have to consider all minimal (P,Q,R)-chains. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (13) TransformationProof (EQUIVALENT) 3.67/1.82 By instantiating [LPAR04] the rule F(a(x), y, s(z), u) -> G(x, y, s(z), u) we obtained the following new rules [LPAR04]: 3.67/1.82 3.67/1.82 (F(a(x0), a(x0), s(x2), z2) -> G(x0, a(x0), s(x2), z2),F(a(x0), a(x0), s(x2), z2) -> G(x0, a(x0), s(x2), z2)) 3.67/1.82 3.67/1.82 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (14) 3.67/1.82 Obligation: 3.67/1.82 Q DP problem: 3.67/1.82 The TRS P consists of the following rules: 3.67/1.82 3.67/1.82 G(x, y, z, u) -> H(x, y, z, u) 3.67/1.82 H(b, y, z, u) -> F(y, y, z, u) 3.67/1.82 F(a(x0), a(x0), s(x2), z2) -> G(x0, a(x0), s(x2), z2) 3.67/1.82 3.67/1.82 R is empty. 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 We have to consider all minimal (P,Q,R)-chains. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (15) TransformationProof (EQUIVALENT) 3.67/1.82 By instantiating [LPAR04] the rule G(x, y, z, u) -> H(x, y, z, u) we obtained the following new rules [LPAR04]: 3.67/1.82 3.67/1.82 (G(z0, a(z0), s(z1), z2) -> H(z0, a(z0), s(z1), z2),G(z0, a(z0), s(z1), z2) -> H(z0, a(z0), s(z1), z2)) 3.67/1.82 3.67/1.82 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (16) 3.67/1.82 Obligation: 3.67/1.82 Q DP problem: 3.67/1.82 The TRS P consists of the following rules: 3.67/1.82 3.67/1.82 H(b, y, z, u) -> F(y, y, z, u) 3.67/1.82 F(a(x0), a(x0), s(x2), z2) -> G(x0, a(x0), s(x2), z2) 3.67/1.82 G(z0, a(z0), s(z1), z2) -> H(z0, a(z0), s(z1), z2) 3.67/1.82 3.67/1.82 R is empty. 3.67/1.82 The set Q consists of the following terms: 3.67/1.82 3.67/1.82 a(b) 3.67/1.82 3.67/1.82 We have to consider all minimal (P,Q,R)-chains. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (17) DependencyGraphProof (EQUIVALENT) 3.67/1.82 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 0 SCCs with 3 less nodes. 3.67/1.82 ---------------------------------------- 3.67/1.82 3.67/1.82 (18) 3.67/1.82 TRUE 3.67/1.84 EOF