27.27/7.84 YES 28.43/8.08 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 28.43/8.08 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 28.43/8.08 28.43/8.08 28.43/8.08 Termination w.r.t. Q of the given QTRS could be proven: 28.43/8.08 28.43/8.08 (0) QTRS 28.43/8.08 (1) DependencyPairsProof [EQUIVALENT, 6 ms] 28.43/8.08 (2) QDP 28.43/8.08 (3) DependencyGraphProof [EQUIVALENT, 0 ms] 28.43/8.08 (4) QDP 28.43/8.08 (5) QDPOrderProof [EQUIVALENT, 126 ms] 28.43/8.08 (6) QDP 28.43/8.08 (7) QDPOrderProof [EQUIVALENT, 61 ms] 28.43/8.08 (8) QDP 28.43/8.08 (9) DependencyGraphProof [EQUIVALENT, 0 ms] 28.43/8.08 (10) TRUE 28.43/8.08 28.43/8.08 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (0) 28.43/8.08 Obligation: 28.43/8.08 Q restricted rewrite system: 28.43/8.08 The TRS R consists of the following rules: 28.43/8.08 28.43/8.08 a(x1) -> x1 28.43/8.08 a(a(x1)) -> b(c(x1)) 28.43/8.08 c(b(b(x1))) -> a(a(b(a(x1)))) 28.43/8.08 28.43/8.08 Q is empty. 28.43/8.08 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (1) DependencyPairsProof (EQUIVALENT) 28.43/8.08 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (2) 28.43/8.08 Obligation: 28.43/8.08 Q DP problem: 28.43/8.08 The TRS P consists of the following rules: 28.43/8.08 28.43/8.08 A(a(x1)) -> C(x1) 28.43/8.08 C(b(b(x1))) -> A(a(b(a(x1)))) 28.43/8.08 C(b(b(x1))) -> A(b(a(x1))) 28.43/8.08 C(b(b(x1))) -> A(x1) 28.43/8.08 28.43/8.08 The TRS R consists of the following rules: 28.43/8.08 28.43/8.08 a(x1) -> x1 28.43/8.08 a(a(x1)) -> b(c(x1)) 28.43/8.08 c(b(b(x1))) -> a(a(b(a(x1)))) 28.43/8.08 28.43/8.08 Q is empty. 28.43/8.08 We have to consider all minimal (P,Q,R)-chains. 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (3) DependencyGraphProof (EQUIVALENT) 28.43/8.08 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 1 less node. 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (4) 28.43/8.08 Obligation: 28.43/8.08 Q DP problem: 28.43/8.08 The TRS P consists of the following rules: 28.43/8.08 28.43/8.08 C(b(b(x1))) -> A(a(b(a(x1)))) 28.43/8.08 A(a(x1)) -> C(x1) 28.43/8.08 C(b(b(x1))) -> A(x1) 28.43/8.08 28.43/8.08 The TRS R consists of the following rules: 28.43/8.08 28.43/8.08 a(x1) -> x1 28.43/8.08 a(a(x1)) -> b(c(x1)) 28.43/8.08 c(b(b(x1))) -> a(a(b(a(x1)))) 28.43/8.08 28.43/8.08 Q is empty. 28.43/8.08 We have to consider all minimal (P,Q,R)-chains. 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (5) QDPOrderProof (EQUIVALENT) 28.43/8.08 We use the reduction pair processor [LPAR04,JAR06]. 28.43/8.08 28.43/8.08 28.43/8.08 The following pairs can be oriented strictly and are deleted. 28.43/8.08 28.43/8.08 C(b(b(x1))) -> A(x1) 28.43/8.08 The remaining pairs can at least be oriented weakly. 28.43/8.08 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(C(x_1)) = [[0A]] + [[1A, 0A, 0A]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(b(x_1)) = [[0A], [0A], [0A]] + [[-I, -I, 0A], [0A, -I, 0A], [0A, 0A, 0A]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(A(x_1)) = [[0A]] + [[0A, 0A, 0A]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(a(x_1)) = [[-I], [0A], [0A]] + [[0A, 0A, -I], [1A, 0A, 0A], [0A, 0A, 0A]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(c(x_1)) = [[0A], [0A], [0A]] + [[1A, 0A, 0A], [1A, 0A, 0A], [1A, 0A, 0A]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 28.43/8.08 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 28.43/8.08 28.43/8.08 a(x1) -> x1 28.43/8.08 a(a(x1)) -> b(c(x1)) 28.43/8.08 c(b(b(x1))) -> a(a(b(a(x1)))) 28.43/8.08 28.43/8.08 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (6) 28.43/8.08 Obligation: 28.43/8.08 Q DP problem: 28.43/8.08 The TRS P consists of the following rules: 28.43/8.08 28.43/8.08 C(b(b(x1))) -> A(a(b(a(x1)))) 28.43/8.08 A(a(x1)) -> C(x1) 28.43/8.08 28.43/8.08 The TRS R consists of the following rules: 28.43/8.08 28.43/8.08 a(x1) -> x1 28.43/8.08 a(a(x1)) -> b(c(x1)) 28.43/8.08 c(b(b(x1))) -> a(a(b(a(x1)))) 28.43/8.08 28.43/8.08 Q is empty. 28.43/8.08 We have to consider all minimal (P,Q,R)-chains. 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (7) QDPOrderProof (EQUIVALENT) 28.43/8.08 We use the reduction pair processor [LPAR04,JAR06]. 28.43/8.08 28.43/8.08 28.43/8.08 The following pairs can be oriented strictly and are deleted. 28.43/8.08 28.43/8.08 A(a(x1)) -> C(x1) 28.43/8.08 The remaining pairs can at least be oriented weakly. 28.43/8.08 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(C(x_1)) = [[-I]] + [[0A, -I, -I]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(b(x_1)) = [[-I], [-I], [-I]] + [[0A, 1A, 0A], [1A, 1A, 1A], [0A, 0A, -I]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(A(x_1)) = [[-I]] + [[0A, 0A, 0A]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(a(x_1)) = [[-I], [-I], [-I]] + [[0A, -I, 0A], [0A, 0A, 0A], [1A, 0A, 0A]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 <<< 28.43/8.08 POL(c(x_1)) = [[-I], [-I], [-I]] + [[0A, -I, -I], [0A, -I, -I], [0A, -I, -I]] * x_1 28.43/8.08 >>> 28.43/8.08 28.43/8.08 28.43/8.08 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 28.43/8.08 28.43/8.08 a(x1) -> x1 28.43/8.08 a(a(x1)) -> b(c(x1)) 28.43/8.08 c(b(b(x1))) -> a(a(b(a(x1)))) 28.43/8.08 28.43/8.08 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (8) 28.43/8.08 Obligation: 28.43/8.08 Q DP problem: 28.43/8.08 The TRS P consists of the following rules: 28.43/8.08 28.43/8.08 C(b(b(x1))) -> A(a(b(a(x1)))) 28.43/8.08 28.43/8.08 The TRS R consists of the following rules: 28.43/8.08 28.43/8.08 a(x1) -> x1 28.43/8.08 a(a(x1)) -> b(c(x1)) 28.43/8.08 c(b(b(x1))) -> a(a(b(a(x1)))) 28.43/8.08 28.43/8.08 Q is empty. 28.43/8.08 We have to consider all minimal (P,Q,R)-chains. 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (9) DependencyGraphProof (EQUIVALENT) 28.43/8.08 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 0 SCCs with 1 less node. 28.43/8.08 ---------------------------------------- 28.43/8.08 28.43/8.08 (10) 28.43/8.08 TRUE 28.71/8.18 EOF