MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { +(x, 0()) -> x , +(x, s(y)) -> s(+(x, y)) , q(0()) -> 0() , q(s(x)) -> s(+(q(x), +(x, x))) } Obligation: runtime complexity Answer: MAYBE None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'Fastest' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'custom shape polynomial interpretation' failed due to the following reason: Following exception was raised: stack overflow 2) 'custom shape polynomial interpretation' failed due to the following reason: The input cannot be shown compatible 3) 'linear polynomial interpretation' failed due to the following reason: The input cannot be shown compatible 2) 'Fastest' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'matrix interpretation of dimension 4' failed due to the following reason: The input cannot be shown compatible 2) 'matrix interpretation of dimension 3' failed due to the following reason: The input cannot be shown compatible 3) 'matrix interpretation of dimension 3' failed due to the following reason: The input cannot be shown compatible 4) 'matrix interpretation of dimension 2' failed due to the following reason: The input cannot be shown compatible 5) 'matrix interpretation of dimension 2' failed due to the following reason: The input cannot be shown compatible 6) 'matrix interpretation of dimension 1' failed due to the following reason: The input cannot be shown compatible Arrrr..