TRS:
 {       minus(x, y) -> cond(equal(min(x, y), y), x, y),
  cond(true(), x, y) -> s(minus(x, s(y))),
         min(0(), v) -> 0(),
         min(u, 0()) -> 0(),
     min(s(u), s(v)) -> s(min(u, v)),
     equal(0(), 0()) -> true(),
    equal(s(x), 0()) -> false(),
    equal(0(), s(y)) -> false(),
   equal(s(x), s(y)) -> equal(x, y)}
 Fail