26.87/7.80 YES 27.38/7.88 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 27.38/7.88 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 27.38/7.88 27.38/7.88 27.38/7.88 Termination w.r.t. Q of the given QTRS could be proven: 27.38/7.88 27.38/7.88 (0) QTRS 27.38/7.88 (1) QTRS Reverse [EQUIVALENT, 0 ms] 27.38/7.88 (2) QTRS 27.38/7.88 (3) DependencyPairsProof [EQUIVALENT, 13 ms] 27.38/7.88 (4) QDP 27.38/7.88 (5) QDPOrderProof [EQUIVALENT, 94 ms] 27.38/7.88 (6) QDP 27.38/7.88 (7) QDPOrderProof [EQUIVALENT, 19 ms] 27.38/7.88 (8) QDP 27.38/7.88 (9) DependencyGraphProof [EQUIVALENT, 0 ms] 27.38/7.88 (10) TRUE 27.38/7.88 27.38/7.88 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (0) 27.38/7.88 Obligation: 27.38/7.88 Q restricted rewrite system: 27.38/7.88 The TRS R consists of the following rules: 27.38/7.88 27.38/7.88 a(a(x1)) -> a(b(c(c(x1)))) 27.38/7.88 c(a(x1)) -> x1 27.38/7.88 c(b(x1)) -> a(a(x1)) 27.38/7.88 27.38/7.88 Q is empty. 27.38/7.88 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (1) QTRS Reverse (EQUIVALENT) 27.38/7.88 We applied the QTRS Reverse Processor [REVERSE]. 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (2) 27.38/7.88 Obligation: 27.38/7.88 Q restricted rewrite system: 27.38/7.88 The TRS R consists of the following rules: 27.38/7.88 27.38/7.88 a(a(x1)) -> c(c(b(a(x1)))) 27.38/7.88 a(c(x1)) -> x1 27.38/7.88 b(c(x1)) -> a(a(x1)) 27.38/7.88 27.38/7.88 Q is empty. 27.38/7.88 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (3) DependencyPairsProof (EQUIVALENT) 27.38/7.88 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (4) 27.38/7.88 Obligation: 27.38/7.88 Q DP problem: 27.38/7.88 The TRS P consists of the following rules: 27.38/7.88 27.38/7.88 A(a(x1)) -> B(a(x1)) 27.38/7.88 B(c(x1)) -> A(a(x1)) 27.38/7.88 B(c(x1)) -> A(x1) 27.38/7.88 27.38/7.88 The TRS R consists of the following rules: 27.38/7.88 27.38/7.88 a(a(x1)) -> c(c(b(a(x1)))) 27.38/7.88 a(c(x1)) -> x1 27.38/7.88 b(c(x1)) -> a(a(x1)) 27.38/7.88 27.38/7.88 Q is empty. 27.38/7.88 We have to consider all minimal (P,Q,R)-chains. 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (5) QDPOrderProof (EQUIVALENT) 27.38/7.88 We use the reduction pair processor [LPAR04,JAR06]. 27.38/7.88 27.38/7.88 27.38/7.88 The following pairs can be oriented strictly and are deleted. 27.38/7.88 27.38/7.88 B(c(x1)) -> A(x1) 27.38/7.88 The remaining pairs can at least be oriented weakly. 27.38/7.88 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(A(x_1)) = [[0A]] + [[0A, -I, -I]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(a(x_1)) = [[1A], [0A], [0A]] + [[1A, -I, 0A], [0A, -I, -I], [0A, 0A, -I]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(B(x_1)) = [[1A]] + [[-I, 0A, -I]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(c(x_1)) = [[0A], [1A], [0A]] + [[-I, 0A, 0A], [1A, -I, 0A], [0A, -I, 0A]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(b(x_1)) = [[-I], [-I], [-I]] + [[0A, 1A, -I], [-I, 0A, -I], [-I, 0A, -I]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 27.38/7.88 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 27.38/7.88 27.38/7.88 a(a(x1)) -> c(c(b(a(x1)))) 27.38/7.88 a(c(x1)) -> x1 27.38/7.88 b(c(x1)) -> a(a(x1)) 27.38/7.88 27.38/7.88 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (6) 27.38/7.88 Obligation: 27.38/7.88 Q DP problem: 27.38/7.88 The TRS P consists of the following rules: 27.38/7.88 27.38/7.88 A(a(x1)) -> B(a(x1)) 27.38/7.88 B(c(x1)) -> A(a(x1)) 27.38/7.88 27.38/7.88 The TRS R consists of the following rules: 27.38/7.88 27.38/7.88 a(a(x1)) -> c(c(b(a(x1)))) 27.38/7.88 a(c(x1)) -> x1 27.38/7.88 b(c(x1)) -> a(a(x1)) 27.38/7.88 27.38/7.88 Q is empty. 27.38/7.88 We have to consider all minimal (P,Q,R)-chains. 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (7) QDPOrderProof (EQUIVALENT) 27.38/7.88 We use the reduction pair processor [LPAR04,JAR06]. 27.38/7.88 27.38/7.88 27.38/7.88 The following pairs can be oriented strictly and are deleted. 27.38/7.88 27.38/7.88 A(a(x1)) -> B(a(x1)) 27.38/7.88 The remaining pairs can at least be oriented weakly. 27.38/7.88 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(A(x_1)) = [[-I]] + [[0A, -I, -I]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(a(x_1)) = [[1A], [0A], [0A]] + [[1A, -I, 0A], [0A, -I, -I], [0A, 0A, 0A]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(B(x_1)) = [[0A]] + [[-I, 0A, -I]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(c(x_1)) = [[0A], [1A], [0A]] + [[-I, 0A, -I], [1A, -I, 0A], [0A, -I, -I]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 <<< 27.38/7.88 POL(b(x_1)) = [[1A], [-I], [-I]] + [[0A, 1A, -I], [-I, 0A, -I], [0A, 0A, 0A]] * x_1 27.38/7.88 >>> 27.38/7.88 27.38/7.88 27.38/7.88 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 27.38/7.88 27.38/7.88 a(a(x1)) -> c(c(b(a(x1)))) 27.38/7.88 a(c(x1)) -> x1 27.38/7.88 b(c(x1)) -> a(a(x1)) 27.38/7.88 27.38/7.88 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (8) 27.38/7.88 Obligation: 27.38/7.88 Q DP problem: 27.38/7.88 The TRS P consists of the following rules: 27.38/7.88 27.38/7.88 B(c(x1)) -> A(a(x1)) 27.38/7.88 27.38/7.88 The TRS R consists of the following rules: 27.38/7.88 27.38/7.88 a(a(x1)) -> c(c(b(a(x1)))) 27.38/7.88 a(c(x1)) -> x1 27.38/7.88 b(c(x1)) -> a(a(x1)) 27.38/7.88 27.38/7.88 Q is empty. 27.38/7.88 We have to consider all minimal (P,Q,R)-chains. 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (9) DependencyGraphProof (EQUIVALENT) 27.38/7.88 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 0 SCCs with 1 less node. 27.38/7.88 ---------------------------------------- 27.38/7.88 27.38/7.88 (10) 27.38/7.88 TRUE 27.74/11.38 EOF