TRS:
 {f(true(), x, y) -> f(gt(x, y), x, round(s(y))),
       round(0()) -> 0(),
    round(s(0())) -> s(s(0())),
   round(s(s(x))) -> s(s(round(x))),
       gt(0(), v) -> false(),
    gt(s(u), 0()) -> true(),
   gt(s(u), s(v)) -> gt(u, v)}
 Fail