TRS: { -(x, 0()) -> x, -(s(x), s(y)) -> -(x, y), min(x, 0()) -> 0(), min(0(), y) -> 0(), min(s(x), s(y)) -> s(min(x, y)), twice(0()) -> 0(), twice(s(x)) -> s(s(twice(x))), f(s(x), s(y)) -> f(-(y, min(x, y)), s(twice(min(x, y)))), f(s(x), s(y)) -> f(-(x, min(x, y)), s(twice(min(x, y))))} Fail