Input TRS:
    1: f(f(x,a()),a()) -> f(f(f(x,a()),f(a(),a())),a())
Number of strict rules: 1
Direct Order(PosReal,>,Poly) ... failed.
Freezing ... failed.
Dependency Pairs:
   #1: #f(f(x,a()),a()) -> #f(f(f(x,a()),f(a(),a())),a())
   #2: #f(f(x,a()),a()) -> #f(f(x,a()),f(a(),a()))
   #3: #f(f(x,a()),a()) -> #f(a(),a())
Number of SCCs: 0, DPs: 0, edges: 0
YES