MAYBE
Time: 0.066298
TRS:
 {f(a(), f(x, a())) -> f(x, f(f(a(), a()), a()))}
 DP:
  DP:
   {f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())),
    f#(a(), f(x, a())) -> f#(f(a(), a()), a()),
    f#(a(), f(x, a())) -> f#(a(), a())}
  TRS:
  {f(a(), f(x, a())) -> f(x, f(f(a(), a()), a()))}
  UR:
   {}
   EDG:
    {(f#(a(), f(x, a())) -> f#(a(), a()), f#(a(), f(x, a())) -> f#(a(), a()))
     (f#(a(), f(x, a())) -> f#(a(), a()), f#(a(), f(x, a())) -> f#(f(a(), a()), a()))
     (f#(a(), f(x, a())) -> f#(a(), a()), f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())))
     (f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())), f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())))
     (f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())), f#(a(), f(x, a())) -> f#(f(a(), a()), a()))
     (f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())), f#(a(), f(x, a())) -> f#(a(), a()))
     (f#(a(), f(x, a())) -> f#(f(a(), a()), a()), f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())))
     (f#(a(), f(x, a())) -> f#(f(a(), a()), a()), f#(a(), f(x, a())) -> f#(f(a(), a()), a()))
     (f#(a(), f(x, a())) -> f#(f(a(), a()), a()), f#(a(), f(x, a())) -> f#(a(), a()))}
    STATUS:
     arrows: 0.000000
     SCCS (1):
      Scc:
       {f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())),
        f#(a(), f(x, a())) -> f#(f(a(), a()), a()),
        f#(a(), f(x, a())) -> f#(a(), a())}
      
      SCC (3):
       Strict:
        {f#(a(), f(x, a())) -> f#(x, f(f(a(), a()), a())),
         f#(a(), f(x, a())) -> f#(f(a(), a()), a()),
         f#(a(), f(x, a())) -> f#(a(), a())}
       Weak:
       {f(a(), f(x, a())) -> f(x, f(f(a(), a()), a()))}
       Open