303.88/291.56 WORST_CASE(Omega(n^1), ?) 303.88/291.57 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 303.88/291.57 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 303.88/291.57 303.88/291.57 303.88/291.57 The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF). 303.88/291.57 303.88/291.57 (0) CpxTRS 303.88/291.57 (1) RenamingProof [BOTH BOUNDS(ID, ID), 0 ms] 303.88/291.57 (2) CpxTRS 303.88/291.57 (3) TypeInferenceProof [BOTH BOUNDS(ID, ID), 0 ms] 303.88/291.57 (4) typed CpxTrs 303.88/291.57 (5) OrderProof [LOWER BOUND(ID), 0 ms] 303.88/291.57 (6) typed CpxTrs 303.88/291.57 (7) RewriteLemmaProof [LOWER BOUND(ID), 290 ms] 303.88/291.57 (8) BEST 303.88/291.57 (9) proven lower bound 303.88/291.57 (10) LowerBoundPropagationProof [FINISHED, 0 ms] 303.88/291.57 (11) BOUNDS(n^1, INF) 303.88/291.57 (12) typed CpxTrs 303.88/291.57 (13) RewriteLemmaProof [LOWER BOUND(ID), 68 ms] 303.88/291.57 (14) typed CpxTrs 303.88/291.57 303.88/291.57 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (0) 303.88/291.57 Obligation: 303.88/291.57 The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF). 303.88/291.57 303.88/291.57 303.88/291.57 The TRS R consists of the following rules: 303.88/291.57 303.88/291.57 ge(x, 0) -> true 303.88/291.57 ge(0, s(y)) -> false 303.88/291.57 ge(s(x), s(y)) -> ge(x, y) 303.88/291.57 minus(x, 0) -> x 303.88/291.57 minus(0, y) -> 0 303.88/291.57 minus(s(x), s(y)) -> minus(x, y) 303.88/291.57 id_inc(x) -> x 303.88/291.57 id_inc(x) -> s(x) 303.88/291.57 div(x, y) -> if(ge(y, s(0)), ge(x, y), x, y) 303.88/291.57 if(false, b, x, y) -> div_by_zero 303.88/291.57 if(true, false, x, y) -> 0 303.88/291.57 if(true, true, x, y) -> id_inc(div(minus(x, y), y)) 303.88/291.57 303.88/291.57 S is empty. 303.88/291.57 Rewrite Strategy: FULL 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (1) RenamingProof (BOTH BOUNDS(ID, ID)) 303.88/291.57 Renamed function symbols to avoid clashes with predefined symbol. 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (2) 303.88/291.57 Obligation: 303.88/291.57 The Runtime Complexity (full) of the given CpxTRS could be proven to be BOUNDS(n^1, INF). 303.88/291.57 303.88/291.57 303.88/291.57 The TRS R consists of the following rules: 303.88/291.57 303.88/291.57 ge(x, 0') -> true 303.88/291.57 ge(0', s(y)) -> false 303.88/291.57 ge(s(x), s(y)) -> ge(x, y) 303.88/291.57 minus(x, 0') -> x 303.88/291.57 minus(0', y) -> 0' 303.88/291.57 minus(s(x), s(y)) -> minus(x, y) 303.88/291.57 id_inc(x) -> x 303.88/291.57 id_inc(x) -> s(x) 303.88/291.57 div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y) 303.88/291.57 if(false, b, x, y) -> div_by_zero 303.88/291.57 if(true, false, x, y) -> 0' 303.88/291.57 if(true, true, x, y) -> id_inc(div(minus(x, y), y)) 303.88/291.57 303.88/291.57 S is empty. 303.88/291.57 Rewrite Strategy: FULL 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (3) TypeInferenceProof (BOTH BOUNDS(ID, ID)) 303.88/291.57 Infered types. 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (4) 303.88/291.57 Obligation: 303.88/291.57 TRS: 303.88/291.57 Rules: 303.88/291.57 ge(x, 0') -> true 303.88/291.57 ge(0', s(y)) -> false 303.88/291.57 ge(s(x), s(y)) -> ge(x, y) 303.88/291.57 minus(x, 0') -> x 303.88/291.57 minus(0', y) -> 0' 303.88/291.57 minus(s(x), s(y)) -> minus(x, y) 303.88/291.57 id_inc(x) -> x 303.88/291.57 id_inc(x) -> s(x) 303.88/291.57 div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y) 303.88/291.57 if(false, b, x, y) -> div_by_zero 303.88/291.57 if(true, false, x, y) -> 0' 303.88/291.57 if(true, true, x, y) -> id_inc(div(minus(x, y), y)) 303.88/291.57 303.88/291.57 Types: 303.88/291.57 ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false 303.88/291.57 0' :: 0':s:div_by_zero 303.88/291.57 true :: true:false 303.88/291.57 s :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 false :: true:false 303.88/291.57 minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div_by_zero :: 0':s:div_by_zero 303.88/291.57 hole_true:false1_0 :: true:false 303.88/291.57 hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero 303.88/291.57 gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero 303.88/291.57 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (5) OrderProof (LOWER BOUND(ID)) 303.88/291.57 Heuristically decided to analyse the following defined symbols: 303.88/291.57 ge, minus, div 303.88/291.57 303.88/291.57 They will be analysed ascendingly in the following order: 303.88/291.57 ge < div 303.88/291.57 minus < div 303.88/291.57 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (6) 303.88/291.57 Obligation: 303.88/291.57 TRS: 303.88/291.57 Rules: 303.88/291.57 ge(x, 0') -> true 303.88/291.57 ge(0', s(y)) -> false 303.88/291.57 ge(s(x), s(y)) -> ge(x, y) 303.88/291.57 minus(x, 0') -> x 303.88/291.57 minus(0', y) -> 0' 303.88/291.57 minus(s(x), s(y)) -> minus(x, y) 303.88/291.57 id_inc(x) -> x 303.88/291.57 id_inc(x) -> s(x) 303.88/291.57 div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y) 303.88/291.57 if(false, b, x, y) -> div_by_zero 303.88/291.57 if(true, false, x, y) -> 0' 303.88/291.57 if(true, true, x, y) -> id_inc(div(minus(x, y), y)) 303.88/291.57 303.88/291.57 Types: 303.88/291.57 ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false 303.88/291.57 0' :: 0':s:div_by_zero 303.88/291.57 true :: true:false 303.88/291.57 s :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 false :: true:false 303.88/291.57 minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div_by_zero :: 0':s:div_by_zero 303.88/291.57 hole_true:false1_0 :: true:false 303.88/291.57 hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero 303.88/291.57 gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero 303.88/291.57 303.88/291.57 303.88/291.57 Generator Equations: 303.88/291.57 gen_0':s:div_by_zero3_0(0) <=> 0' 303.88/291.57 gen_0':s:div_by_zero3_0(+(x, 1)) <=> s(gen_0':s:div_by_zero3_0(x)) 303.88/291.57 303.88/291.57 303.88/291.57 The following defined symbols remain to be analysed: 303.88/291.57 ge, minus, div 303.88/291.57 303.88/291.57 They will be analysed ascendingly in the following order: 303.88/291.57 ge < div 303.88/291.57 minus < div 303.88/291.57 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (7) RewriteLemmaProof (LOWER BOUND(ID)) 303.88/291.57 Proved the following rewrite lemma: 303.88/291.57 ge(gen_0':s:div_by_zero3_0(n5_0), gen_0':s:div_by_zero3_0(n5_0)) -> true, rt in Omega(1 + n5_0) 303.88/291.57 303.88/291.57 Induction Base: 303.88/291.57 ge(gen_0':s:div_by_zero3_0(0), gen_0':s:div_by_zero3_0(0)) ->_R^Omega(1) 303.88/291.57 true 303.88/291.57 303.88/291.57 Induction Step: 303.88/291.57 ge(gen_0':s:div_by_zero3_0(+(n5_0, 1)), gen_0':s:div_by_zero3_0(+(n5_0, 1))) ->_R^Omega(1) 303.88/291.57 ge(gen_0':s:div_by_zero3_0(n5_0), gen_0':s:div_by_zero3_0(n5_0)) ->_IH 303.88/291.57 true 303.88/291.57 303.88/291.57 We have rt in Omega(n^1) and sz in O(n). Thus, we have irc_R in Omega(n). 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (8) 303.88/291.57 Complex Obligation (BEST) 303.88/291.57 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (9) 303.88/291.57 Obligation: 303.88/291.57 Proved the lower bound n^1 for the following obligation: 303.88/291.57 303.88/291.57 TRS: 303.88/291.57 Rules: 303.88/291.57 ge(x, 0') -> true 303.88/291.57 ge(0', s(y)) -> false 303.88/291.57 ge(s(x), s(y)) -> ge(x, y) 303.88/291.57 minus(x, 0') -> x 303.88/291.57 minus(0', y) -> 0' 303.88/291.57 minus(s(x), s(y)) -> minus(x, y) 303.88/291.57 id_inc(x) -> x 303.88/291.57 id_inc(x) -> s(x) 303.88/291.57 div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y) 303.88/291.57 if(false, b, x, y) -> div_by_zero 303.88/291.57 if(true, false, x, y) -> 0' 303.88/291.57 if(true, true, x, y) -> id_inc(div(minus(x, y), y)) 303.88/291.57 303.88/291.57 Types: 303.88/291.57 ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false 303.88/291.57 0' :: 0':s:div_by_zero 303.88/291.57 true :: true:false 303.88/291.57 s :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 false :: true:false 303.88/291.57 minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div_by_zero :: 0':s:div_by_zero 303.88/291.57 hole_true:false1_0 :: true:false 303.88/291.57 hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero 303.88/291.57 gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero 303.88/291.57 303.88/291.57 303.88/291.57 Generator Equations: 303.88/291.57 gen_0':s:div_by_zero3_0(0) <=> 0' 303.88/291.57 gen_0':s:div_by_zero3_0(+(x, 1)) <=> s(gen_0':s:div_by_zero3_0(x)) 303.88/291.57 303.88/291.57 303.88/291.57 The following defined symbols remain to be analysed: 303.88/291.57 ge, minus, div 303.88/291.57 303.88/291.57 They will be analysed ascendingly in the following order: 303.88/291.57 ge < div 303.88/291.57 minus < div 303.88/291.57 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (10) LowerBoundPropagationProof (FINISHED) 303.88/291.57 Propagated lower bound. 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (11) 303.88/291.57 BOUNDS(n^1, INF) 303.88/291.57 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (12) 303.88/291.57 Obligation: 303.88/291.57 TRS: 303.88/291.57 Rules: 303.88/291.57 ge(x, 0') -> true 303.88/291.57 ge(0', s(y)) -> false 303.88/291.57 ge(s(x), s(y)) -> ge(x, y) 303.88/291.57 minus(x, 0') -> x 303.88/291.57 minus(0', y) -> 0' 303.88/291.57 minus(s(x), s(y)) -> minus(x, y) 303.88/291.57 id_inc(x) -> x 303.88/291.57 id_inc(x) -> s(x) 303.88/291.57 div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y) 303.88/291.57 if(false, b, x, y) -> div_by_zero 303.88/291.57 if(true, false, x, y) -> 0' 303.88/291.57 if(true, true, x, y) -> id_inc(div(minus(x, y), y)) 303.88/291.57 303.88/291.57 Types: 303.88/291.57 ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false 303.88/291.57 0' :: 0':s:div_by_zero 303.88/291.57 true :: true:false 303.88/291.57 s :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 false :: true:false 303.88/291.57 minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div_by_zero :: 0':s:div_by_zero 303.88/291.57 hole_true:false1_0 :: true:false 303.88/291.57 hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero 303.88/291.57 gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero 303.88/291.57 303.88/291.57 303.88/291.57 Lemmas: 303.88/291.57 ge(gen_0':s:div_by_zero3_0(n5_0), gen_0':s:div_by_zero3_0(n5_0)) -> true, rt in Omega(1 + n5_0) 303.88/291.57 303.88/291.57 303.88/291.57 Generator Equations: 303.88/291.57 gen_0':s:div_by_zero3_0(0) <=> 0' 303.88/291.57 gen_0':s:div_by_zero3_0(+(x, 1)) <=> s(gen_0':s:div_by_zero3_0(x)) 303.88/291.57 303.88/291.57 303.88/291.57 The following defined symbols remain to be analysed: 303.88/291.57 minus, div 303.88/291.57 303.88/291.57 They will be analysed ascendingly in the following order: 303.88/291.57 minus < div 303.88/291.57 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (13) RewriteLemmaProof (LOWER BOUND(ID)) 303.88/291.57 Proved the following rewrite lemma: 303.88/291.57 minus(gen_0':s:div_by_zero3_0(n263_0), gen_0':s:div_by_zero3_0(n263_0)) -> gen_0':s:div_by_zero3_0(0), rt in Omega(1 + n263_0) 303.88/291.57 303.88/291.57 Induction Base: 303.88/291.57 minus(gen_0':s:div_by_zero3_0(0), gen_0':s:div_by_zero3_0(0)) ->_R^Omega(1) 303.88/291.57 gen_0':s:div_by_zero3_0(0) 303.88/291.57 303.88/291.57 Induction Step: 303.88/291.57 minus(gen_0':s:div_by_zero3_0(+(n263_0, 1)), gen_0':s:div_by_zero3_0(+(n263_0, 1))) ->_R^Omega(1) 303.88/291.57 minus(gen_0':s:div_by_zero3_0(n263_0), gen_0':s:div_by_zero3_0(n263_0)) ->_IH 303.88/291.57 gen_0':s:div_by_zero3_0(0) 303.88/291.57 303.88/291.57 We have rt in Omega(n^1) and sz in O(n). Thus, we have irc_R in Omega(n). 303.88/291.57 ---------------------------------------- 303.88/291.57 303.88/291.57 (14) 303.88/291.57 Obligation: 303.88/291.57 TRS: 303.88/291.57 Rules: 303.88/291.57 ge(x, 0') -> true 303.88/291.57 ge(0', s(y)) -> false 303.88/291.57 ge(s(x), s(y)) -> ge(x, y) 303.88/291.57 minus(x, 0') -> x 303.88/291.57 minus(0', y) -> 0' 303.88/291.57 minus(s(x), s(y)) -> minus(x, y) 303.88/291.57 id_inc(x) -> x 303.88/291.57 id_inc(x) -> s(x) 303.88/291.57 div(x, y) -> if(ge(y, s(0')), ge(x, y), x, y) 303.88/291.57 if(false, b, x, y) -> div_by_zero 303.88/291.57 if(true, false, x, y) -> 0' 303.88/291.57 if(true, true, x, y) -> id_inc(div(minus(x, y), y)) 303.88/291.57 303.88/291.57 Types: 303.88/291.57 ge :: 0':s:div_by_zero -> 0':s:div_by_zero -> true:false 303.88/291.57 0' :: 0':s:div_by_zero 303.88/291.57 true :: true:false 303.88/291.57 s :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 false :: true:false 303.88/291.57 minus :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 id_inc :: 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div :: 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 if :: true:false -> true:false -> 0':s:div_by_zero -> 0':s:div_by_zero -> 0':s:div_by_zero 303.88/291.57 div_by_zero :: 0':s:div_by_zero 303.88/291.57 hole_true:false1_0 :: true:false 303.88/291.57 hole_0':s:div_by_zero2_0 :: 0':s:div_by_zero 303.88/291.57 gen_0':s:div_by_zero3_0 :: Nat -> 0':s:div_by_zero 303.88/291.57 303.88/291.57 303.88/291.57 Lemmas: 303.88/291.57 ge(gen_0':s:div_by_zero3_0(n5_0), gen_0':s:div_by_zero3_0(n5_0)) -> true, rt in Omega(1 + n5_0) 303.88/291.57 minus(gen_0':s:div_by_zero3_0(n263_0), gen_0':s:div_by_zero3_0(n263_0)) -> gen_0':s:div_by_zero3_0(0), rt in Omega(1 + n263_0) 303.88/291.57 303.88/291.57 303.88/291.57 Generator Equations: 303.88/291.57 gen_0':s:div_by_zero3_0(0) <=> 0' 303.88/291.57 gen_0':s:div_by_zero3_0(+(x, 1)) <=> s(gen_0':s:div_by_zero3_0(x)) 303.88/291.57 303.88/291.57 303.88/291.57 The following defined symbols remain to be analysed: 303.88/291.57 div 303.97/291.59 EOF