MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { h(x, y) -> f(x, y, x) , f(0(), 1(), x) -> h(x, x) , g(x, y) -> x , g(x, y) -> y } Obligation: innermost runtime complexity Answer: MAYBE The input cannot be shown compatible Arrrr..