TIMEOUT We are left with following problem, upon which TcT provides the certificate TIMEOUT. Strict Trs: { zeros() -> cons(0(), zeros()) , and(tt(), X) -> X , length(cons(N, L)) -> s(length(L)) , length(nil()) -> 0() } Obligation: innermost runtime complexity Answer: TIMEOUT Computation stopped due to timeout after 10.0 seconds. Arrrr..