MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { evalState_cond(Pair(x9, x11)) -> x11 , rec[plus_0][2](0(), x50) -> x50 , rec[plus_0][2](S(x10), x6) -> S(rec[plus_0][2](x10, x6)) , find_cond_2(True(), x15, x21, x25) -> Some(x25) , find_cond_2(False(), x58, x4, x7) -> find_key[1](x58, x4) , find_key[1](x29, Nil()) -> None() , find_key[1](x9, Cons(Pair(x7, x5), x3)) -> find_cond_2(rec[equal_0][2](x7, x9), x9, x3, x5) , rec[equal_0][2](0(), 0()) -> True() , rec[equal_0][2](0(), S(x122)) -> False() , rec[equal_0][2](S(x122), 0()) -> False() , rec[equal_0][2](S(x10), S(x6)) -> rec[equal_0][2](x10, x6) , bind_cond(Pair(x337, x152), memoM_1(x209)) -> Pair(Cons(Pair(x209, x152), x337), x152) , bind_cond(Pair(x2, x4), liftM2_0(bind_m_f(bind_m_f(get(), liftM_0(find_key(x8))), memoM_0(x6)))) -> bind_cond(bind_cond(Pair(x2, find_key[1](x8, x2)), memoM_0(x6)), liftM2_1(x4)) , bind_cond(Pair(x3, x2), liftM2_1(x1)) -> Pair(x3, rec[plus_0][2](x1, x2)) , bind_cond(Pair(x84, Some(x76)), memoM_0(x22)) -> Pair(x84, x76) , bind_cond(Pair(x9, None()), memoM_0(0())) -> bind_m_f[1](memoM_1(0()), x9) , bind_cond(Pair(x9, None()), memoM_0(S(0()))) -> bind_m_f[1](memoM_1(S(0())), x9) , bind_cond(Pair(x2, None()), memoM_0(S(S(x1)))) -> bind_cond(bind_cond(bind_cond(Pair(x2, find_key[1](S(x1), x2)), memoM_0(S(x1))), liftM2_0(bind_m_f(bind_m_f(get(), liftM_0(find_key(x1))), memoM_0(x1)))), memoM_1(S(S(x1)))) , bind_m_f[1](x2, x1) -> bind_cond(Pair(x1, S(0())), x2) , main(0()) -> S(0()) , main(S(0())) -> S(0()) , main(S(S(x1))) -> evalState_cond(bind_cond(bind_cond(Pair(Nil(), None()), memoM_0(S(x1))), liftM2_0(bind_m_f(bind_m_f(get(), liftM_0(find_key(x1))), memoM_0(x1))))) } 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..