7.23/2.72 YES 8.03/2.87 proof of /export/starexec/sandbox2/benchmark/theBenchmark.xml 8.03/2.87 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 8.03/2.87 8.03/2.87 8.03/2.87 Termination w.r.t. Q of the given QTRS could be proven: 8.03/2.87 8.03/2.87 (0) QTRS 8.03/2.87 (1) DependencyPairsProof [EQUIVALENT, 0 ms] 8.03/2.87 (2) QDP 8.03/2.87 (3) DependencyGraphProof [EQUIVALENT, 1 ms] 8.03/2.87 (4) QDP 8.03/2.87 (5) QDPSizeChangeProof [EQUIVALENT, 4 ms] 8.03/2.87 (6) YES 8.03/2.87 8.03/2.87 8.03/2.87 ---------------------------------------- 8.03/2.87 8.03/2.87 (0) 8.03/2.87 Obligation: 8.03/2.87 Q restricted rewrite system: 8.03/2.87 The TRS R consists of the following rules: 8.03/2.87 8.03/2.87 a(x1) -> x1 8.03/2.87 a(a(x1)) -> a(b(c(a(x1)))) 8.03/2.87 c(b(x1)) -> a(b(a(x1))) 8.03/2.87 8.03/2.87 Q is empty. 8.03/2.87 8.03/2.87 ---------------------------------------- 8.03/2.87 8.03/2.87 (1) DependencyPairsProof (EQUIVALENT) 8.03/2.87 Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem. 8.03/2.87 ---------------------------------------- 8.03/2.87 8.03/2.87 (2) 8.03/2.87 Obligation: 8.03/2.87 Q DP problem: 8.03/2.87 The TRS P consists of the following rules: 8.03/2.87 8.03/2.87 A(a(x1)) -> A(b(c(a(x1)))) 8.03/2.87 A(a(x1)) -> C(a(x1)) 8.03/2.87 C(b(x1)) -> A(b(a(x1))) 8.03/2.87 C(b(x1)) -> A(x1) 8.03/2.87 8.03/2.87 The TRS R consists of the following rules: 8.03/2.87 8.03/2.87 a(x1) -> x1 8.03/2.87 a(a(x1)) -> a(b(c(a(x1)))) 8.03/2.87 c(b(x1)) -> a(b(a(x1))) 8.03/2.87 8.03/2.87 Q is empty. 8.03/2.87 We have to consider all minimal (P,Q,R)-chains. 8.03/2.87 ---------------------------------------- 8.03/2.87 8.03/2.87 (3) DependencyGraphProof (EQUIVALENT) 8.03/2.87 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 2 less nodes. 8.03/2.87 ---------------------------------------- 8.03/2.87 8.03/2.87 (4) 8.03/2.87 Obligation: 8.03/2.87 Q DP problem: 8.03/2.87 The TRS P consists of the following rules: 8.03/2.87 8.03/2.87 A(a(x1)) -> C(a(x1)) 8.03/2.87 C(b(x1)) -> A(x1) 8.03/2.87 8.03/2.87 The TRS R consists of the following rules: 8.03/2.87 8.03/2.87 a(x1) -> x1 8.03/2.87 a(a(x1)) -> a(b(c(a(x1)))) 8.03/2.87 c(b(x1)) -> a(b(a(x1))) 8.03/2.87 8.03/2.87 Q is empty. 8.03/2.87 We have to consider all minimal (P,Q,R)-chains. 8.03/2.87 ---------------------------------------- 8.03/2.87 8.03/2.87 (5) QDPSizeChangeProof (EQUIVALENT) 8.03/2.87 By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] we have proven that there are no infinite chains for this DP problem. 8.03/2.87 8.03/2.87 From the DPs we obtained the following set of size-change graphs: 8.03/2.87 *C(b(x1)) -> A(x1) 8.03/2.87 The graph contains the following edges 1 > 1 8.03/2.87 8.03/2.87 8.03/2.87 *A(a(x1)) -> C(a(x1)) 8.03/2.87 The graph contains the following edges 1 >= 1 8.03/2.87 8.03/2.87 8.03/2.87 ---------------------------------------- 8.03/2.87 8.03/2.87 (6) 8.03/2.87 YES 8.20/2.97 EOF