17.30/5.22 YES 17.30/5.23 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 17.30/5.23 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 17.30/5.23 17.30/5.23 17.30/5.23 Termination w.r.t. Q of the given QTRS could be proven: 17.30/5.23 17.30/5.23 (0) QTRS 17.30/5.23 (1) DependencyPairsProof [EQUIVALENT, 0 ms] 17.30/5.23 (2) QDP 17.30/5.23 (3) QDPOrderProof [EQUIVALENT, 94 ms] 17.30/5.23 (4) QDP 17.30/5.23 (5) PisEmptyProof [EQUIVALENT, 0 ms] 17.30/5.23 (6) YES 17.30/5.23 17.30/5.23 17.30/5.23 ---------------------------------------- 17.30/5.23 17.30/5.23 (0) 17.30/5.23 Obligation: 17.30/5.23 Q restricted rewrite system: 17.30/5.23 The TRS R consists of the following rules: 17.30/5.23 17.30/5.23 a(x1) -> x1 17.30/5.23 a(a(x1)) -> b(c(x1)) 17.30/5.23 a(b(b(x1))) -> b(b(a(a(x1)))) 17.30/5.23 17.30/5.23 Q is empty. 17.30/5.23 17.30/5.23 ---------------------------------------- 17.30/5.23 17.30/5.23 (1) DependencyPairsProof (EQUIVALENT) 17.30/5.23 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 17.30/5.23 ---------------------------------------- 17.30/5.23 17.30/5.23 (2) 17.30/5.23 Obligation: 17.30/5.23 Q DP problem: 17.30/5.23 The TRS P consists of the following rules: 17.30/5.23 17.30/5.23 A(b(b(x1))) -> A(a(x1)) 17.30/5.23 A(b(b(x1))) -> A(x1) 17.30/5.23 17.30/5.23 The TRS R consists of the following rules: 17.30/5.23 17.30/5.23 a(x1) -> x1 17.30/5.23 a(a(x1)) -> b(c(x1)) 17.30/5.23 a(b(b(x1))) -> b(b(a(a(x1)))) 17.30/5.23 17.30/5.23 Q is empty. 17.30/5.23 We have to consider all minimal (P,Q,R)-chains. 17.30/5.23 ---------------------------------------- 17.30/5.23 17.30/5.23 (3) QDPOrderProof (EQUIVALENT) 17.30/5.23 We use the reduction pair processor [LPAR04,JAR06]. 17.30/5.23 17.30/5.23 17.30/5.23 The following pairs can be oriented strictly and are deleted. 17.30/5.23 17.30/5.23 A(b(b(x1))) -> A(a(x1)) 17.30/5.23 A(b(b(x1))) -> A(x1) 17.30/5.23 The remaining pairs can at least be oriented weakly. 17.30/5.23 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 17.30/5.23 17.30/5.23 <<< 17.30/5.23 POL(A(x_1)) = [[0A]] + [[0A, 0A, 0A]] * x_1 17.30/5.23 >>> 17.30/5.23 17.30/5.23 <<< 17.30/5.23 POL(b(x_1)) = [[1A], [0A], [-I]] + [[0A, 0A, 0A], [1A, 0A, 0A], [-I, -I, 0A]] * x_1 17.30/5.23 >>> 17.30/5.23 17.30/5.23 <<< 17.30/5.23 POL(a(x_1)) = [[1A], [0A], [-I]] + [[0A, 0A, 0A], [0A, 0A, 0A], [0A, 0A, 0A]] * x_1 17.30/5.23 >>> 17.30/5.23 17.30/5.23 <<< 17.30/5.23 POL(c(x_1)) = [[0A], [-I], [-I]] + [[-I, -I, -I], [0A, -I, 0A], [0A, 0A, 0A]] * x_1 17.30/5.23 >>> 17.30/5.23 17.30/5.23 17.30/5.23 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 17.30/5.23 17.30/5.23 a(x1) -> x1 17.30/5.23 a(a(x1)) -> b(c(x1)) 17.30/5.23 a(b(b(x1))) -> b(b(a(a(x1)))) 17.30/5.23 17.30/5.23 17.30/5.23 ---------------------------------------- 17.30/5.23 17.30/5.23 (4) 17.30/5.23 Obligation: 17.30/5.23 Q DP problem: 17.30/5.23 P is empty. 17.30/5.23 The TRS R consists of the following rules: 17.30/5.23 17.30/5.23 a(x1) -> x1 17.30/5.23 a(a(x1)) -> b(c(x1)) 17.30/5.23 a(b(b(x1))) -> b(b(a(a(x1)))) 17.30/5.23 17.30/5.23 Q is empty. 17.30/5.23 We have to consider all minimal (P,Q,R)-chains. 17.30/5.23 ---------------------------------------- 17.30/5.23 17.30/5.23 (5) PisEmptyProof (EQUIVALENT) 17.30/5.23 The TRS P is empty. Hence, there is no (P,Q,R) chain. 17.30/5.23 ---------------------------------------- 17.30/5.23 17.30/5.23 (6) 17.30/5.23 YES 17.44/5.33 EOF