TRS:
 {f(true(), x, y) -> f(and(gt(x, y), gt(y, s(s(0())))), plus(s(0()), x), double(y)),
       gt(0(), v) -> false(),
    gt(s(u), 0()) -> true(),
   gt(s(u), s(v)) -> gt(u, v),
   and(x, true()) -> x,
  and(x, false()) -> false(),
     plus(n, 0()) -> n,
    plus(n, s(m)) -> s(plus(n, m)),
      double(0()) -> 0(),
     double(s(x)) -> s(s(double(x)))}
 Fail