20.53/6.11 YES 20.66/6.20 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 20.66/6.20 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 20.66/6.20 20.66/6.20 20.66/6.20 Termination w.r.t. Q of the given QTRS could be proven: 20.66/6.20 20.66/6.20 (0) QTRS 20.66/6.20 (1) DependencyPairsProof [EQUIVALENT, 19 ms] 20.66/6.20 (2) QDP 20.66/6.20 (3) DependencyGraphProof [EQUIVALENT, 1 ms] 20.66/6.20 (4) QDP 20.66/6.20 (5) QDPOrderProof [EQUIVALENT, 90 ms] 20.66/6.20 (6) QDP 20.66/6.20 (7) PisEmptyProof [EQUIVALENT, 0 ms] 20.66/6.20 (8) YES 20.66/6.20 20.66/6.20 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (0) 20.66/6.20 Obligation: 20.66/6.20 Q restricted rewrite system: 20.66/6.20 The TRS R consists of the following rules: 20.66/6.20 20.66/6.20 a(x1) -> x1 20.66/6.20 a(b(x1)) -> c(b(b(a(a(x1))))) 20.66/6.20 b(x1) -> c(x1) 20.66/6.20 c(c(x1)) -> x1 20.66/6.20 20.66/6.20 Q is empty. 20.66/6.20 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (1) DependencyPairsProof (EQUIVALENT) 20.66/6.20 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (2) 20.66/6.20 Obligation: 20.66/6.20 Q DP problem: 20.66/6.20 The TRS P consists of the following rules: 20.66/6.20 20.66/6.20 A(b(x1)) -> C(b(b(a(a(x1))))) 20.66/6.20 A(b(x1)) -> B(b(a(a(x1)))) 20.66/6.20 A(b(x1)) -> B(a(a(x1))) 20.66/6.20 A(b(x1)) -> A(a(x1)) 20.66/6.20 A(b(x1)) -> A(x1) 20.66/6.20 B(x1) -> C(x1) 20.66/6.20 20.66/6.20 The TRS R consists of the following rules: 20.66/6.20 20.66/6.20 a(x1) -> x1 20.66/6.20 a(b(x1)) -> c(b(b(a(a(x1))))) 20.66/6.20 b(x1) -> c(x1) 20.66/6.20 c(c(x1)) -> x1 20.66/6.20 20.66/6.20 Q is empty. 20.66/6.20 We have to consider all minimal (P,Q,R)-chains. 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (3) DependencyGraphProof (EQUIVALENT) 20.66/6.20 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 4 less nodes. 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (4) 20.66/6.20 Obligation: 20.66/6.20 Q DP problem: 20.66/6.20 The TRS P consists of the following rules: 20.66/6.20 20.66/6.20 A(b(x1)) -> A(x1) 20.66/6.20 A(b(x1)) -> A(a(x1)) 20.66/6.20 20.66/6.20 The TRS R consists of the following rules: 20.66/6.20 20.66/6.20 a(x1) -> x1 20.66/6.20 a(b(x1)) -> c(b(b(a(a(x1))))) 20.66/6.20 b(x1) -> c(x1) 20.66/6.20 c(c(x1)) -> x1 20.66/6.20 20.66/6.20 Q is empty. 20.66/6.20 We have to consider all minimal (P,Q,R)-chains. 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (5) QDPOrderProof (EQUIVALENT) 20.66/6.20 We use the reduction pair processor [LPAR04,JAR06]. 20.66/6.20 20.66/6.20 20.66/6.20 The following pairs can be oriented strictly and are deleted. 20.66/6.20 20.66/6.20 A(b(x1)) -> A(x1) 20.66/6.20 A(b(x1)) -> A(a(x1)) 20.66/6.20 The remaining pairs can at least be oriented weakly. 20.66/6.20 Used ordering: Matrix interpretation [MATRO] with arctic natural numbers [ARCTIC]: 20.66/6.20 20.66/6.20 <<< 20.66/6.20 POL(A(x_1)) = [[-I]] + [[0A, -I, -I]] * x_1 20.66/6.20 >>> 20.66/6.20 20.66/6.20 <<< 20.66/6.20 POL(b(x_1)) = [[0A], [-I], [-I]] + [[1A, 0A, 0A], [0A, -I, -I], [0A, 0A, 0A]] * x_1 20.66/6.20 >>> 20.66/6.20 20.66/6.20 <<< 20.66/6.20 POL(a(x_1)) = [[-I], [0A], [-I]] + [[0A, -I, -I], [1A, 0A, 0A], [1A, 0A, 0A]] * x_1 20.66/6.20 >>> 20.66/6.20 20.66/6.20 <<< 20.66/6.20 POL(c(x_1)) = [[0A], [-I], [-I]] + [[-I, 0A, 0A], [0A, -I, -I], [0A, 0A, 0A]] * x_1 20.66/6.20 >>> 20.66/6.20 20.66/6.20 20.66/6.20 The following usable rules [FROCOS05] with respect to the argument filtering of the ordering [JAR06] were oriented: 20.66/6.20 20.66/6.20 a(x1) -> x1 20.66/6.20 a(b(x1)) -> c(b(b(a(a(x1))))) 20.66/6.20 b(x1) -> c(x1) 20.66/6.20 c(c(x1)) -> x1 20.66/6.20 20.66/6.20 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (6) 20.66/6.20 Obligation: 20.66/6.20 Q DP problem: 20.66/6.20 P is empty. 20.66/6.20 The TRS R consists of the following rules: 20.66/6.20 20.66/6.20 a(x1) -> x1 20.66/6.20 a(b(x1)) -> c(b(b(a(a(x1))))) 20.66/6.20 b(x1) -> c(x1) 20.66/6.20 c(c(x1)) -> x1 20.66/6.20 20.66/6.20 Q is empty. 20.66/6.20 We have to consider all minimal (P,Q,R)-chains. 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (7) PisEmptyProof (EQUIVALENT) 20.66/6.20 The TRS P is empty. Hence, there is no (P,Q,R) chain. 20.66/6.20 ---------------------------------------- 20.66/6.20 20.66/6.20 (8) 20.66/6.20 YES 20.99/6.28 EOF