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