3.18/1.59 WORST_CASE(NON_POLY, ?) 3.18/1.59 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 3.18/1.59 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 3.18/1.59 3.18/1.59 3.18/1.59 The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(EXP, INF). 3.18/1.59 3.18/1.59 (0) CpxTRS 3.18/1.59 (1) RelTrsToDecreasingLoopProblemProof [LOWER BOUND(ID), 0 ms] 3.18/1.59 (2) TRS for Loop Detection 3.18/1.59 (3) DecreasingLoopProof [FINISHED, 0 ms] 3.18/1.59 (4) BOUNDS(EXP, INF) 3.18/1.59 3.18/1.59 3.18/1.59 ---------------------------------------- 3.18/1.59 3.18/1.59 (0) 3.18/1.59 Obligation: 3.18/1.59 The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(EXP, INF). 3.18/1.59 3.18/1.59 3.18/1.59 The TRS R consists of the following rules: 3.18/1.59 3.18/1.59 fib(0) -> 0 3.18/1.59 fib(s(0)) -> s(0) 3.18/1.59 fib(s(s(x))) -> +(fib(s(x)), fib(x)) 3.18/1.59 3.18/1.59 S is empty. 3.18/1.59 Rewrite Strategy: INNERMOST 3.18/1.59 ---------------------------------------- 3.18/1.59 3.18/1.59 (1) RelTrsToDecreasingLoopProblemProof (LOWER BOUND(ID)) 3.18/1.59 Transformed a relative TRS into a decreasing-loop problem. 3.18/1.59 ---------------------------------------- 3.18/1.59 3.18/1.59 (2) 3.18/1.59 Obligation: 3.18/1.59 Analyzing the following TRS for decreasing loops: 3.18/1.59 3.18/1.59 The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(EXP, INF). 3.18/1.59 3.18/1.59 3.18/1.59 The TRS R consists of the following rules: 3.18/1.59 3.18/1.59 fib(0) -> 0 3.18/1.59 fib(s(0)) -> s(0) 3.18/1.59 fib(s(s(x))) -> +(fib(s(x)), fib(x)) 3.18/1.59 3.18/1.59 S is empty. 3.18/1.59 Rewrite Strategy: INNERMOST 3.18/1.59 ---------------------------------------- 3.18/1.59 3.18/1.59 (3) DecreasingLoopProof (FINISHED) 3.18/1.59 The following loop(s) give(s) rise to the lower bound EXP: 3.18/1.59 3.18/1.59 The rewrite sequence 3.18/1.59 3.18/1.59 fib(s(s(x))) ->^+ +(fib(s(x)), fib(x)) 3.18/1.59 3.18/1.59 gives rise to a decreasing loop by considering the right hand sides subterm at position [0]. 3.18/1.59 3.18/1.59 The pumping substitution is [x / s(x)]. 3.18/1.59 3.18/1.59 The result substitution is [ ]. 3.18/1.59 3.18/1.59 3.18/1.59 3.18/1.59 The rewrite sequence 3.18/1.59 3.18/1.59 fib(s(s(x))) ->^+ +(fib(s(x)), fib(x)) 3.18/1.59 3.18/1.59 gives rise to a decreasing loop by considering the right hand sides subterm at position [1]. 3.18/1.59 3.18/1.59 The pumping substitution is [x / s(s(x))]. 3.18/1.59 3.18/1.59 The result substitution is [ ]. 3.18/1.59 3.18/1.59 3.18/1.59 3.18/1.59 3.18/1.59 ---------------------------------------- 3.18/1.59 3.18/1.59 (4) 3.18/1.59 BOUNDS(EXP, INF) 3.45/1.63 EOF