Input TRS:
    1: f(s(s(s(s(s(s(s(s(x)))))))),y,y) -> f(id(s(s(s(s(s(s(s(s(x))))))))),y,y)
    2: id(s(x)) -> s(id(x))
    3: id(0()) -> 0()
Number of Rules: 3
Direct QWPOS(mSum) ... failed.