TRS:
 {    minus(x, 0()) -> x,
  minus(s(x), s(y)) -> minus(x, y),
         le(0(), y) -> true(),
      le(s(x), 0()) -> false(),
     le(s(x), s(y)) -> le(x, y),
    quot(0(), s(y)) -> 0(),
   quot(s(x), s(y)) -> s(quot(minus(s(x), s(y)), s(y)))}
 Fail