979.20/291.47 WORST_CASE(Omega(n^1), ?) 979.20/291.47 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 979.20/291.47 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 979.20/291.47 979.20/291.47 979.20/291.47 The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF). 979.20/291.47 979.20/291.47 (0) CpxTRS 979.20/291.47 (1) RelTrsToDecreasingLoopProblemProof [LOWER BOUND(ID), 0 ms] 979.20/291.47 (2) TRS for Loop Detection 979.20/291.47 (3) DecreasingLoopProof [LOWER BOUND(ID), 0 ms] 979.20/291.47 (4) BEST 979.20/291.47 (5) proven lower bound 979.20/291.47 (6) LowerBoundPropagationProof [FINISHED, 0 ms] 979.20/291.47 (7) BOUNDS(n^1, INF) 979.20/291.47 (8) TRS for Loop Detection 979.20/291.47 979.20/291.47 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (0) 979.20/291.47 Obligation: 979.20/291.47 The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF). 979.20/291.47 979.20/291.47 979.20/291.47 The TRS R consists of the following rules: 979.20/291.47 979.20/291.47 ack(0, y) -> s(y) 979.20/291.47 ack(s(x), 0) -> ack(x, s(0)) 979.20/291.47 ack(s(x), s(y)) -> ack(x, ack(s(x), y)) 979.20/291.47 f(s(x), y) -> f(x, s(x)) 979.20/291.47 f(x, s(y)) -> f(y, x) 979.20/291.47 f(x, y) -> ack(x, y) 979.20/291.47 ack(s(x), y) -> f(x, x) 979.20/291.47 979.20/291.47 S is empty. 979.20/291.47 Rewrite Strategy: FULL 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (1) RelTrsToDecreasingLoopProblemProof (LOWER BOUND(ID)) 979.20/291.47 Transformed a relative TRS into a decreasing-loop problem. 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (2) 979.20/291.47 Obligation: 979.20/291.47 Analyzing the following TRS for decreasing loops: 979.20/291.47 979.20/291.47 The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF). 979.20/291.47 979.20/291.47 979.20/291.47 The TRS R consists of the following rules: 979.20/291.47 979.20/291.47 ack(0, y) -> s(y) 979.20/291.47 ack(s(x), 0) -> ack(x, s(0)) 979.20/291.47 ack(s(x), s(y)) -> ack(x, ack(s(x), y)) 979.20/291.47 f(s(x), y) -> f(x, s(x)) 979.20/291.47 f(x, s(y)) -> f(y, x) 979.20/291.47 f(x, y) -> ack(x, y) 979.20/291.47 ack(s(x), y) -> f(x, x) 979.20/291.47 979.20/291.47 S is empty. 979.20/291.47 Rewrite Strategy: FULL 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (3) DecreasingLoopProof (LOWER BOUND(ID)) 979.20/291.47 The following loop(s) give(s) rise to the lower bound Omega(n^1): 979.20/291.47 979.20/291.47 The rewrite sequence 979.20/291.47 979.20/291.47 ack(s(x), s(y)) ->^+ ack(x, ack(s(x), y)) 979.20/291.47 979.20/291.47 gives rise to a decreasing loop by considering the right hand sides subterm at position [1]. 979.20/291.47 979.20/291.47 The pumping substitution is [y / s(y)]. 979.20/291.47 979.20/291.47 The result substitution is [ ]. 979.20/291.47 979.20/291.47 979.20/291.47 979.20/291.47 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (4) 979.20/291.47 Complex Obligation (BEST) 979.20/291.47 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (5) 979.20/291.47 Obligation: 979.20/291.47 Proved the lower bound n^1 for the following obligation: 979.20/291.47 979.20/291.47 The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF). 979.20/291.47 979.20/291.47 979.20/291.47 The TRS R consists of the following rules: 979.20/291.47 979.20/291.47 ack(0, y) -> s(y) 979.20/291.47 ack(s(x), 0) -> ack(x, s(0)) 979.20/291.47 ack(s(x), s(y)) -> ack(x, ack(s(x), y)) 979.20/291.47 f(s(x), y) -> f(x, s(x)) 979.20/291.47 f(x, s(y)) -> f(y, x) 979.20/291.47 f(x, y) -> ack(x, y) 979.20/291.47 ack(s(x), y) -> f(x, x) 979.20/291.47 979.20/291.47 S is empty. 979.20/291.47 Rewrite Strategy: FULL 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (6) LowerBoundPropagationProof (FINISHED) 979.20/291.47 Propagated lower bound. 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (7) 979.20/291.47 BOUNDS(n^1, INF) 979.20/291.47 979.20/291.47 ---------------------------------------- 979.20/291.47 979.20/291.47 (8) 979.20/291.47 Obligation: 979.20/291.47 Analyzing the following TRS for decreasing loops: 979.20/291.47 979.20/291.47 The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF). 979.20/291.47 979.20/291.47 979.20/291.47 The TRS R consists of the following rules: 979.20/291.47 979.20/291.47 ack(0, y) -> s(y) 979.20/291.47 ack(s(x), 0) -> ack(x, s(0)) 979.20/291.47 ack(s(x), s(y)) -> ack(x, ack(s(x), y)) 979.20/291.47 f(s(x), y) -> f(x, s(x)) 979.20/291.47 f(x, s(y)) -> f(y, x) 979.20/291.47 f(x, y) -> ack(x, y) 979.20/291.47 ack(s(x), y) -> f(x, x) 979.20/291.47 979.20/291.47 S is empty. 979.20/291.47 Rewrite Strategy: FULL 979.47/291.51 EOF