26.07/7.59 YES 26.07/7.60 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 26.07/7.60 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 26.07/7.60 26.07/7.60 26.07/7.60 Termination w.r.t. Q of the given QTRS could be proven: 26.07/7.60 26.07/7.60 (0) QTRS 26.07/7.60 (1) DependencyPairsProof [EQUIVALENT, 27 ms] 26.07/7.60 (2) QDP 26.07/7.60 (3) DependencyGraphProof [EQUIVALENT, 6 ms] 26.07/7.60 (4) QDP 26.07/7.60 (5) QDPOrderProof [EQUIVALENT, 70 ms] 26.07/7.60 (6) QDP 26.07/7.60 (7) PisEmptyProof [EQUIVALENT, 0 ms] 26.07/7.60 (8) YES 26.07/7.60 26.07/7.60 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (0) 26.07/7.60 Obligation: 26.07/7.60 Q restricted rewrite system: 26.07/7.60 The TRS R consists of the following rules: 26.07/7.60 26.07/7.60 a(x1) -> x1 26.07/7.60 a(b(x1)) -> c(b(b(a(a(x1))))) 26.07/7.60 b(b(x1)) -> x1 26.07/7.60 c(c(x1)) -> x1 26.07/7.60 26.07/7.60 Q is empty. 26.07/7.60 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (1) DependencyPairsProof (EQUIVALENT) 26.07/7.60 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (2) 26.07/7.60 Obligation: 26.07/7.60 Q DP problem: 26.07/7.60 The TRS P consists of the following rules: 26.07/7.60 26.07/7.60 A(b(x1)) -> C(b(b(a(a(x1))))) 26.07/7.60 A(b(x1)) -> B(b(a(a(x1)))) 26.07/7.60 A(b(x1)) -> B(a(a(x1))) 26.07/7.60 A(b(x1)) -> A(a(x1)) 26.07/7.60 A(b(x1)) -> A(x1) 26.07/7.60 26.07/7.60 The TRS R consists of the following rules: 26.07/7.60 26.07/7.60 a(x1) -> x1 26.07/7.60 a(b(x1)) -> c(b(b(a(a(x1))))) 26.07/7.60 b(b(x1)) -> x1 26.07/7.60 c(c(x1)) -> x1 26.07/7.60 26.07/7.60 Q is empty. 26.07/7.60 We have to consider all minimal (P,Q,R)-chains. 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (3) DependencyGraphProof (EQUIVALENT) 26.07/7.60 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 3 less nodes. 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (4) 26.07/7.60 Obligation: 26.07/7.60 Q DP problem: 26.07/7.60 The TRS P consists of the following rules: 26.07/7.60 26.07/7.60 A(b(x1)) -> A(x1) 26.07/7.60 A(b(x1)) -> A(a(x1)) 26.07/7.60 26.07/7.60 The TRS R consists of the following rules: 26.07/7.60 26.07/7.60 a(x1) -> x1 26.07/7.60 a(b(x1)) -> c(b(b(a(a(x1))))) 26.07/7.60 b(b(x1)) -> x1 26.07/7.60 c(c(x1)) -> x1 26.07/7.60 26.07/7.60 Q is empty. 26.07/7.60 We have to consider all minimal (P,Q,R)-chains. 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (5) QDPOrderProof (EQUIVALENT) 26.07/7.60 We use the reduction pair processor [LPAR04,JAR06]. 26.07/7.60 26.07/7.60 26.07/7.60 The following pairs can be oriented strictly and are deleted. 26.07/7.60 26.07/7.60 A(b(x1)) -> A(x1) 26.07/7.60 A(b(x1)) -> A(a(x1)) 26.07/7.60 The remaining pairs can at least be oriented weakly. 26.07/7.60 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 26.07/7.60 26.07/7.60 <<< 26.07/7.60 POL(A(x_1)) = [[0A]] + [[-I, -I, 0A]] * x_1 26.07/7.60 >>> 26.07/7.60 26.07/7.60 <<< 26.07/7.60 POL(b(x_1)) = [[0A], [-I], [1A]] + [[0A, 0A, 0A], [-I, 0A, 0A], [-I, 0A, 1A]] * x_1 26.07/7.60 >>> 26.07/7.60 26.07/7.60 <<< 26.07/7.60 POL(a(x_1)) = [[0A], [-I], [-I]] + [[0A, 0A, 0A], [-I, 0A, 1A], [-I, -I, 0A]] * x_1 26.07/7.60 >>> 26.07/7.60 26.07/7.60 <<< 26.07/7.60 POL(c(x_1)) = [[-I], [-I], [-I]] + [[0A, 0A, -I], [-I, 0A, 0A], [-I, 0A, -I]] * x_1 26.07/7.60 >>> 26.07/7.60 26.07/7.60 26.07/7.60 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 26.07/7.60 26.07/7.60 a(x1) -> x1 26.07/7.60 a(b(x1)) -> c(b(b(a(a(x1))))) 26.07/7.60 b(b(x1)) -> x1 26.07/7.60 c(c(x1)) -> x1 26.07/7.60 26.07/7.60 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (6) 26.07/7.60 Obligation: 26.07/7.60 Q DP problem: 26.07/7.60 P is empty. 26.07/7.60 The TRS R consists of the following rules: 26.07/7.60 26.07/7.60 a(x1) -> x1 26.07/7.60 a(b(x1)) -> c(b(b(a(a(x1))))) 26.07/7.60 b(b(x1)) -> x1 26.07/7.60 c(c(x1)) -> x1 26.07/7.60 26.07/7.60 Q is empty. 26.07/7.60 We have to consider all minimal (P,Q,R)-chains. 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (7) PisEmptyProof (EQUIVALENT) 26.07/7.60 The TRS P is empty. Hence, there is no (P,Q,R) chain. 26.07/7.60 ---------------------------------------- 26.07/7.60 26.07/7.60 (8) 26.07/7.60 YES 26.45/7.69 EOF