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