Input TRS:
    1: f(X) -> g(n__h(n__f(X)))
    2: h(X) -> n__h(X)
    3: f(X) -> n__f(X)
    4: activate(n__h(X)) -> h(activate(X))
    5: activate(n__f(X)) -> f(activate(X))
    6: activate(X) -> X
Number of Rules: 6
Direct POLO(Sum) ... failed.