MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { eq(0(), 0()) -> true() , eq(0(), s(y)) -> false() , eq(s(x), 0()) -> false() , eq(s(x), s(y)) -> eq(x, y) , lt(x, 0()) -> false() , lt(0(), s(y)) -> true() , lt(s(x), s(y)) -> lt(x, y) , bin2s(nil()) -> 0() , bin2s(cons(x, xs)) -> bin2ss(x, xs) , bin2ss(x, nil()) -> x , bin2ss(x, cons(0(), xs)) -> bin2ss(double(x), xs) , bin2ss(x, cons(1(), xs)) -> bin2ss(s(double(x)), xs) , half(0()) -> 0() , half(s(0())) -> 0() , half(s(s(x))) -> s(half(x)) , log(0()) -> 0() , log(s(0())) -> 0() , log(s(s(x))) -> s(log(half(s(s(x))))) , more(nil()) -> nil() , more(cons(xs, ys)) -> cons(cons(0(), xs), cons(cons(1(), xs), cons(xs, ys))) , s2bin(x) -> s2bin1(x, 0(), cons(nil(), nil())) , s2bin1(x, y, lists) -> if1(lt(y, log(x)), x, y, lists) , if1(true(), x, y, lists) -> s2bin1(x, s(y), more(lists)) , if1(false(), x, y, lists) -> s2bin2(x, lists) , s2bin2(x, nil()) -> bug_list_not() , s2bin2(x, cons(xs, ys)) -> if2(eq(x, bin2s(xs)), x, xs, ys) , if2(true(), x, xs, ys) -> xs , if2(false(), x, xs, ys) -> s2bin2(x, ys) } 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) 'bsearch-popstar (timeout of 60 seconds)' failed due to the following reason: The input cannot be shown compatible 2) 'Polynomial Path Order (PS) (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..