MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { lt(x, 0()) -> false() , lt(0(), s(y)) -> true() , lt(s(x), s(y)) -> lt(x, y) , plus(x, 0()) -> x , plus(x, s(y)) -> s(plus(x, y)) , quot(x, s(y)) -> help(x, s(y), 0()) , help(x, s(y), c) -> if(lt(c, x), x, s(y), c) , if(false(), x, s(y), c) -> 0() , if(true(), x, s(y), c) -> s(help(x, s(y), plus(c, s(y)))) } Obligation: runtime complexity Answer: MAYBE None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'Best' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'WithProblem (timeout of 30 seconds) (timeout of 60 seconds)' failed due to the following reason: Computation stopped due to timeout after 30.0 seconds. 2) 'Best' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'bsearch-popstar (timeout of 60 seconds)' failed due to the following reason: The processor is inapplicable, reason: Processor only applicable for innermost runtime complexity analysis 2) 'Polynomial Path Order (PS) (timeout of 60 seconds)' failed due to the following reason: The processor is inapplicable, reason: Processor only applicable for innermost runtime complexity analysis 3) 'Fastest (timeout of 5 seconds) (timeout of 60 seconds)' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'Bounds with perSymbol-enrichment and initial automaton 'match'' failed due to the following reason: match-boundness of the problem could not be verified. 2) 'Bounds with minimal-enrichment and initial automaton 'match'' failed due to the following reason: match-boundness of the problem could not be verified. 2) 'Innermost Weak Dependency Pairs (timeout of 60 seconds)' failed due to the following reason: We add the following weak dependency pairs: Strict DPs: { lt^#(x, 0()) -> c_1() , lt^#(0(), s(y)) -> c_2() , lt^#(s(x), s(y)) -> c_3(lt^#(x, y)) , plus^#(x, 0()) -> c_4(x) , plus^#(x, s(y)) -> c_5(plus^#(x, y)) , quot^#(x, s(y)) -> c_6(help^#(x, s(y), 0())) , help^#(x, s(y), c) -> c_7(if^#(lt(c, x), x, s(y), c)) , if^#(false(), x, s(y), c) -> c_8() , if^#(true(), x, s(y), c) -> c_9(help^#(x, s(y), plus(c, s(y)))) } and mark the set of starting terms. We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { lt^#(x, 0()) -> c_1() , lt^#(0(), s(y)) -> c_2() , lt^#(s(x), s(y)) -> c_3(lt^#(x, y)) , plus^#(x, 0()) -> c_4(x) , plus^#(x, s(y)) -> c_5(plus^#(x, y)) , quot^#(x, s(y)) -> c_6(help^#(x, s(y), 0())) , help^#(x, s(y), c) -> c_7(if^#(lt(c, x), x, s(y), c)) , if^#(false(), x, s(y), c) -> c_8() , if^#(true(), x, s(y), c) -> c_9(help^#(x, s(y), plus(c, s(y)))) } Strict Trs: { lt(x, 0()) -> false() , lt(0(), s(y)) -> true() , lt(s(x), s(y)) -> lt(x, y) , plus(x, 0()) -> x , plus(x, s(y)) -> s(plus(x, y)) , quot(x, s(y)) -> help(x, s(y), 0()) , help(x, s(y), c) -> if(lt(c, x), x, s(y), c) , if(false(), x, s(y), c) -> 0() , if(true(), x, s(y), c) -> s(help(x, s(y), plus(c, s(y)))) } Obligation: runtime complexity Answer: MAYBE We estimate the number of application of {1,2,8} by applications of Pre({1,2,8}) = {3,4,7}. Here rules are labeled as follows: DPs: { 1: lt^#(x, 0()) -> c_1() , 2: lt^#(0(), s(y)) -> c_2() , 3: lt^#(s(x), s(y)) -> c_3(lt^#(x, y)) , 4: plus^#(x, 0()) -> c_4(x) , 5: plus^#(x, s(y)) -> c_5(plus^#(x, y)) , 6: quot^#(x, s(y)) -> c_6(help^#(x, s(y), 0())) , 7: help^#(x, s(y), c) -> c_7(if^#(lt(c, x), x, s(y), c)) , 8: if^#(false(), x, s(y), c) -> c_8() , 9: if^#(true(), x, s(y), c) -> c_9(help^#(x, s(y), plus(c, s(y)))) } We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { lt^#(s(x), s(y)) -> c_3(lt^#(x, y)) , plus^#(x, 0()) -> c_4(x) , plus^#(x, s(y)) -> c_5(plus^#(x, y)) , quot^#(x, s(y)) -> c_6(help^#(x, s(y), 0())) , help^#(x, s(y), c) -> c_7(if^#(lt(c, x), x, s(y), c)) , if^#(true(), x, s(y), c) -> c_9(help^#(x, s(y), plus(c, s(y)))) } Strict Trs: { lt(x, 0()) -> false() , lt(0(), s(y)) -> true() , lt(s(x), s(y)) -> lt(x, y) , plus(x, 0()) -> x , plus(x, s(y)) -> s(plus(x, y)) , quot(x, s(y)) -> help(x, s(y), 0()) , help(x, s(y), c) -> if(lt(c, x), x, s(y), c) , if(false(), x, s(y), c) -> 0() , if(true(), x, s(y), c) -> s(help(x, s(y), plus(c, s(y)))) } Weak DPs: { lt^#(x, 0()) -> c_1() , lt^#(0(), s(y)) -> c_2() , if^#(false(), x, s(y), c) -> c_8() } Obligation: runtime complexity Answer: MAYBE Empty strict component of the problem is NOT empty. Arrrr..