MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { table() -> gen(s(0())) , gen(x) -> if1(le(x, 10()), x) , if1(false(), x) -> nil() , if1(true(), x) -> if2(x, x) , le(s(x), s(y)) -> le(x, y) , le(s(x), 0()) -> false() , le(0(), y) -> true() , 10() -> s(s(s(s(s(s(s(s(s(s(0())))))))))) , if2(x, y) -> if3(le(y, 10()), x, y) , if3(false(), x, y) -> gen(s(x)) , if3(true(), x, y) -> cons(entry(x, y, times(x, y)), if2(x, s(y))) , times(s(x), y) -> plus(y, times(x, y)) , times(0(), y) -> 0() , plus(s(x), y) -> s(plus(x, y)) , plus(0(), y) -> y } Obligation: innermost runtime complexity Answer: MAYBE The input cannot be shown compatible Arrrr..