YES proof of /export/starexec/sandbox/benchmark/theBenchmark.xml # AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Termination w.r.t. Q of the given QTRS could be proven: (0) QTRS (1) QTRS Reverse [EQUIVALENT, 0 ms] (2) QTRS (3) RFCMatchBoundsTRSProof [EQUIVALENT, 0 ms] (4) YES ---------------------------------------- (0) Obligation: Q restricted rewrite system: The TRS R consists of the following rules: f(f(a)) -> f(g(n__f(a))) f(X) -> n__f(X) activate(n__f(X)) -> f(X) activate(X) -> X Q is empty. ---------------------------------------- (1) QTRS Reverse (EQUIVALENT) We applied the QTRS Reverse Processor [REVERSE]. ---------------------------------------- (2) Obligation: Q restricted rewrite system: The TRS R consists of the following rules: a'(f(f(x))) -> a'(n__f(g(f(x)))) f(X) -> n__f(X) n__f(activate(X)) -> f(X) activate(X) -> X Q is empty. ---------------------------------------- (3) RFCMatchBoundsTRSProof (EQUIVALENT) Termination of the TRS R could be shown with a Match Bound [MATCHBOUNDS1,MATCHBOUNDS2] of 2. This implies Q-termination of R. The following rules were used to construct the certificate: a'(f(f(x))) -> a'(n__f(g(f(x)))) f(X) -> n__f(X) n__f(activate(X)) -> f(X) activate(X) -> X The certificate found is represented by the following graph. The certificate consists of the following enumerated nodes: 2, 10, 11, 12, 13, 14, 15, 16 Node 2 is start node and node 10 is final node. Those nodes are connected through the following edges: * 2 to 11 labelled a'_1(0)* 2 to 10 labelled n__f_1(0), f_1(0), a'_1(0), g_1(0), activate_1(0), n__f_1(1), f_1(1), a'_1(1), g_1(1), activate_1(1), n__f_1(2)* 2 to 14 labelled a'_1(1)* 10 to 10 labelled #_1(0)* 11 to 12 labelled n__f_1(0)* 12 to 13 labelled g_1(0)* 13 to 10 labelled f_1(0), n__f_1(1), f_1(1), n__f_1(2)* 14 to 15 labelled n__f_1(1)* 15 to 16 labelled g_1(1)* 16 to 10 labelled f_1(1), n__f_1(2) ---------------------------------------- (4) YES