TRS: { cond1(true(), x, y) -> cond2(gr(x, y), x, y), cond2(true(), x, y) -> cond1(gr(x, 0()), y, y), cond2(false(), x, y) -> cond1(gr(x, 0()), p(x), y), gr(0(), x) -> false(), gr(s(x), 0()) -> true(), gr(s(x), s(y)) -> gr(x, y), p(0()) -> 0(), p(s(x)) -> x} Fail