MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { times(x, 0()) -> 0() , times(x, s(y)) -> plus(times(x, y), x) , plus(s(x), x) -> plus(if(gt(x, x), id(x), id(x)), s(x)) , plus(s(x), s(y)) -> s(s(plus(if(gt(x, y), x, y), if(not(gt(x, y)), id(x), id(y))))) , plus(id(x), s(y)) -> s(plus(x, if(gt(s(y), y), y, s(y)))) , plus(zero(), y) -> y , if(true(), x, y) -> x , if(false(), x, y) -> y , gt(s(x), s(y)) -> gt(x, y) , gt(s(x), zero()) -> true() , gt(zero(), y) -> false() , not(x) -> if(x, false(), true()) , id(x) -> x } Obligation: innermost runtime complexity Answer: MAYBE Arguments of following rules are not normal-forms: { plus(id(x), s(y)) -> s(plus(x, if(gt(s(y), y), y, s(y)))) } All above mentioned rules can be savely removed. We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { times(x, 0()) -> 0() , times(x, s(y)) -> plus(times(x, y), x) , plus(s(x), x) -> plus(if(gt(x, x), id(x), id(x)), s(x)) , plus(s(x), s(y)) -> s(s(plus(if(gt(x, y), x, y), if(not(gt(x, y)), id(x), id(y))))) , plus(zero(), y) -> y , if(true(), x, y) -> x , if(false(), x, y) -> y , gt(s(x), s(y)) -> gt(x, y) , gt(s(x), zero()) -> true() , gt(zero(), y) -> false() , not(x) -> if(x, false(), true()) , id(x) -> x } Obligation: innermost runtime complexity Answer: MAYBE None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'empty' failed due to the following reason: Empty strict component of the problem is NOT empty. 2) 'Best' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'WithProblem (timeout of 60 seconds)' failed due to the following reason: Computation stopped due to timeout after 60.0 seconds. 2) '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) 'Polynomial Path Order (PS) (timeout of 60 seconds)' failed due to the following reason: The input cannot be shown compatible 2) 'bsearch-popstar (timeout of 60 seconds)' failed due to the following reason: The input cannot be shown compatible 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 minimal-enrichment and initial automaton 'match'' failed due to the following reason: match-boundness of the problem could not be verified. 2) 'Bounds with perSymbol-enrichment and initial automaton 'match'' failed due to the following reason: match-boundness of the problem could not be verified. Arrrr..