11.93/4.01 YES 11.93/4.03 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 11.93/4.03 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 11.93/4.03 11.93/4.03 11.93/4.03 Termination w.r.t. Q of the given QTRS could be proven: 11.93/4.03 11.93/4.03 (0) QTRS 11.93/4.03 (1) DependencyPairsProof [EQUIVALENT, 2 ms] 11.93/4.03 (2) QDP 11.93/4.03 (3) DependencyGraphProof [EQUIVALENT, 0 ms] 11.93/4.03 (4) QDP 11.93/4.03 (5) QDPOrderProof [EQUIVALENT, 61 ms] 11.93/4.03 (6) QDP 11.93/4.03 (7) PisEmptyProof [EQUIVALENT, 0 ms] 11.93/4.03 (8) YES 11.93/4.03 11.93/4.03 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (0) 11.93/4.03 Obligation: 11.93/4.03 Q restricted rewrite system: 11.93/4.03 The TRS R consists of the following rules: 11.93/4.03 11.93/4.03 a(x1) -> b(c(x1)) 11.93/4.03 a(c(b(x1))) -> b(a(a(c(x1)))) 11.93/4.03 b(b(x1)) -> x1 11.93/4.03 11.93/4.03 Q is empty. 11.93/4.03 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (1) DependencyPairsProof (EQUIVALENT) 11.93/4.03 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (2) 11.93/4.03 Obligation: 11.93/4.03 Q DP problem: 11.93/4.03 The TRS P consists of the following rules: 11.93/4.03 11.93/4.03 A(x1) -> B(c(x1)) 11.93/4.03 A(c(b(x1))) -> B(a(a(c(x1)))) 11.93/4.03 A(c(b(x1))) -> A(a(c(x1))) 11.93/4.03 A(c(b(x1))) -> A(c(x1)) 11.93/4.03 11.93/4.03 The TRS R consists of the following rules: 11.93/4.03 11.93/4.03 a(x1) -> b(c(x1)) 11.93/4.03 a(c(b(x1))) -> b(a(a(c(x1)))) 11.93/4.03 b(b(x1)) -> x1 11.93/4.03 11.93/4.03 Q is empty. 11.93/4.03 We have to consider all minimal (P,Q,R)-chains. 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (3) DependencyGraphProof (EQUIVALENT) 11.93/4.03 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 2 less nodes. 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (4) 11.93/4.03 Obligation: 11.93/4.03 Q DP problem: 11.93/4.03 The TRS P consists of the following rules: 11.93/4.03 11.93/4.03 A(c(b(x1))) -> A(c(x1)) 11.93/4.03 A(c(b(x1))) -> A(a(c(x1))) 11.93/4.03 11.93/4.03 The TRS R consists of the following rules: 11.93/4.03 11.93/4.03 a(x1) -> b(c(x1)) 11.93/4.03 a(c(b(x1))) -> b(a(a(c(x1)))) 11.93/4.03 b(b(x1)) -> x1 11.93/4.03 11.93/4.03 Q is empty. 11.93/4.03 We have to consider all minimal (P,Q,R)-chains. 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (5) QDPOrderProof (EQUIVALENT) 11.93/4.03 We use the reduction pair processor [LPAR04,JAR06]. 11.93/4.03 11.93/4.03 11.93/4.03 The following pairs can be oriented strictly and are deleted. 11.93/4.03 11.93/4.03 A(c(b(x1))) -> A(c(x1)) 11.93/4.03 A(c(b(x1))) -> A(a(c(x1))) 11.93/4.03 The remaining pairs can at least be oriented weakly. 11.93/4.03 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 11.93/4.03 11.93/4.03 <<< 11.93/4.03 POL(A(x_1)) = [[0A]] + [[0A, 0A, 0A]] * x_1 11.93/4.03 >>> 11.93/4.03 11.93/4.03 <<< 11.93/4.03 POL(c(x_1)) = [[0A], [0A], [-I]] + [[0A, -I, 0A], [0A, -I, 1A], [-I, -I, -I]] * x_1 11.93/4.03 >>> 11.93/4.03 11.93/4.03 <<< 11.93/4.03 POL(b(x_1)) = [[0A], [0A], [0A]] + [[-I, 0A, 0A], [0A, -I, 0A], [0A, -I, 1A]] * x_1 11.93/4.03 >>> 11.93/4.03 11.93/4.03 <<< 11.93/4.03 POL(a(x_1)) = [[0A], [0A], [0A]] + [[0A, -I, 1A], [0A, 0A, 0A], [0A, 0A, 0A]] * x_1 11.93/4.03 >>> 11.93/4.03 11.93/4.03 11.93/4.03 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 11.93/4.03 11.93/4.03 a(x1) -> b(c(x1)) 11.93/4.03 a(c(b(x1))) -> b(a(a(c(x1)))) 11.93/4.03 b(b(x1)) -> x1 11.93/4.03 11.93/4.03 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (6) 11.93/4.03 Obligation: 11.93/4.03 Q DP problem: 11.93/4.03 P is empty. 11.93/4.03 The TRS R consists of the following rules: 11.93/4.03 11.93/4.03 a(x1) -> b(c(x1)) 11.93/4.03 a(c(b(x1))) -> b(a(a(c(x1)))) 11.93/4.03 b(b(x1)) -> x1 11.93/4.03 11.93/4.03 Q is empty. 11.93/4.03 We have to consider all minimal (P,Q,R)-chains. 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (7) PisEmptyProof (EQUIVALENT) 11.93/4.03 The TRS P is empty. Hence, there is no (P,Q,R) chain. 11.93/4.03 ---------------------------------------- 11.93/4.03 11.93/4.03 (8) 11.93/4.03 YES 12.18/4.09 EOF