28.43/8.19 YES 28.93/8.37 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 28.93/8.37 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 28.93/8.37 28.93/8.37 28.93/8.37 Termination w.r.t. Q of the given QTRS could be proven: 28.93/8.37 28.93/8.37 (0) QTRS 28.93/8.37 (1) QTRS Reverse [EQUIVALENT, 0 ms] 28.93/8.37 (2) QTRS 28.93/8.37 (3) DependencyPairsProof [EQUIVALENT, 0 ms] 28.93/8.37 (4) QDP 28.93/8.37 (5) DependencyGraphProof [EQUIVALENT, 0 ms] 28.93/8.37 (6) QDP 28.93/8.37 (7) QDPOrderProof [EQUIVALENT, 107 ms] 28.93/8.37 (8) QDP 28.93/8.37 (9) QDPOrderProof [EQUIVALENT, 47 ms] 28.93/8.37 (10) QDP 28.93/8.37 (11) PisEmptyProof [EQUIVALENT, 0 ms] 28.93/8.37 (12) YES 28.93/8.37 28.93/8.37 28.93/8.37 ---------------------------------------- 28.93/8.37 28.93/8.37 (0) 28.93/8.37 Obligation: 28.93/8.37 Q restricted rewrite system: 28.93/8.37 The TRS R consists of the following rules: 28.93/8.37 28.93/8.37 a(x1) -> x1 28.93/8.37 a(b(x1)) -> x1 28.93/8.37 b(a(x1)) -> a(a(b(c(x1)))) 28.93/8.37 c(c(x1)) -> b(x1) 28.93/8.37 28.93/8.37 Q is empty. 28.93/8.37 28.93/8.37 ---------------------------------------- 28.93/8.37 28.93/8.37 (1) QTRS Reverse (EQUIVALENT) 28.93/8.37 We applied the QTRS Reverse Processor [REVERSE]. 28.93/8.37 ---------------------------------------- 28.93/8.37 28.93/8.37 (2) 28.93/8.37 Obligation: 28.93/8.37 Q restricted rewrite system: 28.93/8.37 The TRS R consists of the following rules: 28.93/8.37 28.93/8.37 a(x1) -> x1 28.93/8.37 b(a(x1)) -> x1 28.93/8.37 a(b(x1)) -> c(b(a(a(x1)))) 28.93/8.37 c(c(x1)) -> b(x1) 28.93/8.37 28.93/8.37 Q is empty. 28.93/8.37 28.93/8.37 ---------------------------------------- 28.93/8.37 28.93/8.37 (3) DependencyPairsProof (EQUIVALENT) 28.93/8.37 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 28.93/8.37 ---------------------------------------- 28.93/8.37 28.93/8.37 (4) 28.93/8.37 Obligation: 28.93/8.37 Q DP problem: 28.93/8.37 The TRS P consists of the following rules: 28.93/8.37 28.93/8.37 A(b(x1)) -> C(b(a(a(x1)))) 28.93/8.37 A(b(x1)) -> B(a(a(x1))) 28.93/8.37 A(b(x1)) -> A(a(x1)) 28.93/8.37 A(b(x1)) -> A(x1) 28.93/8.37 C(c(x1)) -> B(x1) 28.93/8.37 28.93/8.37 The TRS R consists of the following rules: 28.93/8.37 28.93/8.37 a(x1) -> x1 28.93/8.37 b(a(x1)) -> x1 28.93/8.37 a(b(x1)) -> c(b(a(a(x1)))) 28.93/8.37 c(c(x1)) -> b(x1) 28.93/8.37 28.93/8.37 Q is empty. 28.93/8.37 We have to consider all minimal (P,Q,R)-chains. 28.93/8.37 ---------------------------------------- 28.93/8.37 28.93/8.37 (5) DependencyGraphProof (EQUIVALENT) 28.93/8.37 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 3 less nodes. 28.93/8.37 ---------------------------------------- 28.93/8.37 28.93/8.37 (6) 28.93/8.37 Obligation: 28.93/8.37 Q DP problem: 28.93/8.37 The TRS P consists of the following rules: 28.93/8.37 28.93/8.37 A(b(x1)) -> A(x1) 28.93/8.37 A(b(x1)) -> A(a(x1)) 28.93/8.37 28.93/8.37 The TRS R consists of the following rules: 29.21/8.37 29.21/8.37 a(x1) -> x1 29.21/8.37 b(a(x1)) -> x1 29.21/8.37 a(b(x1)) -> c(b(a(a(x1)))) 29.21/8.37 c(c(x1)) -> b(x1) 29.21/8.37 29.21/8.37 Q is empty. 29.21/8.37 We have to consider all minimal (P,Q,R)-chains. 29.21/8.37 ---------------------------------------- 29.21/8.37 29.21/8.37 (7) QDPOrderProof (EQUIVALENT) 29.21/8.37 We use the reduction pair processor [LPAR04,JAR06]. 29.21/8.37 29.21/8.37 29.21/8.37 The following pairs can be oriented strictly and are deleted. 29.21/8.37 29.21/8.37 A(b(x1)) -> A(x1) 29.21/8.37 The remaining pairs can at least be oriented weakly. 29.21/8.37 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 29.21/8.37 29.21/8.37 <<< 29.21/8.37 POL(A(x_1)) = [[0A]] + [[-I, 0A, -I]] * x_1 29.21/8.37 >>> 29.21/8.37 29.21/8.37 <<< 29.21/8.37 POL(b(x_1)) = [[0A], [1A], [-I]] + [[0A, 0A, -I], [0A, 1A, 0A], [1A, 0A, 1A]] * x_1 29.21/8.37 >>> 29.21/8.37 29.21/8.37 <<< 29.21/8.37 POL(a(x_1)) = [[-I], [0A], [-I]] + [[0A, 0A, 0A], [0A, 0A, 0A], [0A, 0A, 0A]] * x_1 29.21/8.37 >>> 29.21/8.37 29.21/8.37 <<< 29.21/8.37 POL(c(x_1)) = [[0A], [0A], [0A]] + [[0A, 0A, 0A], [1A, 0A, 0A], [1A, 0A, 0A]] * x_1 29.21/8.37 >>> 29.21/8.37 29.21/8.37 29.21/8.37 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 29.21/8.37 29.21/8.37 a(x1) -> x1 29.21/8.37 a(b(x1)) -> c(b(a(a(x1)))) 29.21/8.37 b(a(x1)) -> x1 29.21/8.37 c(c(x1)) -> b(x1) 29.21/8.37 29.21/8.37 29.21/8.37 ---------------------------------------- 29.21/8.37 29.21/8.37 (8) 29.21/8.37 Obligation: 29.21/8.37 Q DP problem: 29.21/8.37 The TRS P consists of the following rules: 29.21/8.37 29.21/8.37 A(b(x1)) -> A(a(x1)) 29.21/8.37 29.21/8.37 The TRS R consists of the following rules: 29.21/8.37 29.21/8.37 a(x1) -> x1 29.21/8.37 b(a(x1)) -> x1 29.21/8.37 a(b(x1)) -> c(b(a(a(x1)))) 29.21/8.37 c(c(x1)) -> b(x1) 29.21/8.37 29.21/8.37 Q is empty. 29.21/8.37 We have to consider all minimal (P,Q,R)-chains. 29.21/8.37 ---------------------------------------- 29.21/8.37 29.21/8.37 (9) QDPOrderProof (EQUIVALENT) 29.21/8.37 We use the reduction pair processor [LPAR04,JAR06]. 29.21/8.37 29.21/8.37 29.21/8.37 The following pairs can be oriented strictly and are deleted. 29.21/8.37 29.21/8.37 A(b(x1)) -> A(a(x1)) 29.21/8.37 The remaining pairs can at least be oriented weakly. 29.21/8.37 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 29.21/8.37 29.21/8.37 <<< 29.21/8.37 POL(A(x_1)) = [[-I]] + [[0A, -I, 0A]] * x_1 29.21/8.37 >>> 29.21/8.37 29.21/8.37 <<< 29.21/8.37 POL(b(x_1)) = [[0A], [-I], [-I]] + [[1A, 0A, 1A], [0A, 0A, 0A], [0A, -I, 0A]] * x_1 29.21/8.37 >>> 29.21/8.37 29.21/8.37 <<< 29.21/8.37 POL(a(x_1)) = [[-I], [-I], [-I]] + [[0A, -I, 0A], [0A, 0A, 0A], [0A, -I, 0A]] * x_1 29.21/8.37 >>> 29.21/8.37 29.21/8.37 <<< 29.21/8.37 POL(c(x_1)) = [[0A], [0A], [0A]] + [[0A, 0A, 1A], [-I, 0A, 0A], [0A, 0A, 0A]] * x_1 29.21/8.37 >>> 29.21/8.37 29.21/8.37 29.21/8.37 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 29.21/8.37 29.21/8.37 a(x1) -> x1 29.21/8.37 a(b(x1)) -> c(b(a(a(x1)))) 29.21/8.37 b(a(x1)) -> x1 29.21/8.37 c(c(x1)) -> b(x1) 29.21/8.37 29.21/8.37 29.21/8.37 ---------------------------------------- 29.21/8.37 29.21/8.37 (10) 29.21/8.37 Obligation: 29.21/8.37 Q DP problem: 29.21/8.37 P is empty. 29.21/8.37 The TRS R consists of the following rules: 29.21/8.37 29.21/8.37 a(x1) -> x1 29.21/8.37 b(a(x1)) -> x1 29.21/8.37 a(b(x1)) -> c(b(a(a(x1)))) 29.21/8.37 c(c(x1)) -> b(x1) 29.21/8.37 29.21/8.37 Q is empty. 29.21/8.37 We have to consider all minimal (P,Q,R)-chains. 29.21/8.37 ---------------------------------------- 29.21/8.37 29.21/8.37 (11) PisEmptyProof (EQUIVALENT) 29.21/8.37 The TRS P is empty. Hence, there is no (P,Q,R) chain. 29.21/8.37 ---------------------------------------- 29.21/8.37 29.21/8.37 (12) 29.21/8.37 YES 29.29/8.43 EOF