MAYBE
Time: 0.005645
TRS:
 {f(f(a(), a()), x) -> f(f(a(), x), f(a(), f(a(), a())))}
 DP:
  DP:
   {f#(f(a(), a()), x) -> f#(f(a(), x), f(a(), f(a(), a()))),
    f#(f(a(), a()), x) -> f#(a(), x),
    f#(f(a(), a()), x) -> f#(a(), f(a(), a()))}
  TRS:
  {f(f(a(), a()), x) -> f(f(a(), x), f(a(), f(a(), a())))}
  EDG:
   {(f#(f(a(), a()), x) -> f#(f(a(), x), f(a(), f(a(), a()))), f#(f(a(), a()), x) -> f#(f(a(), x), f(a(), f(a(), a()))))
    (f#(f(a(), a()), x) -> f#(f(a(), x), f(a(), f(a(), a()))), f#(f(a(), a()), x) -> f#(a(), x))
    (f#(f(a(), a()), x) -> f#(f(a(), x), f(a(), f(a(), a()))), f#(f(a(), a()), x) -> f#(a(), f(a(), a())))}
   SCCS (1):
    Scc:
     {f#(f(a(), a()), x) -> f#(f(a(), x), f(a(), f(a(), a())))}
    SCC (1):
     Strict:
      {f#(f(a(), a()), x) -> f#(f(a(), x), f(a(), f(a(), a())))}
     Weak:
     {f(f(a(), a()), x) -> f(f(a(), x), f(a(), f(a(), a())))}
     Fail