MAYBE
Time: 0.021180
TRS:
 {f(a(), f(a(), x)) -> f(a(), f(f(a(), x), f(a(), a())))}
 DP:
  DP:
   {f#(a(), f(a(), x)) -> f#(f(a(), x), f(a(), a())),
    f#(a(), f(a(), x)) -> f#(a(), f(f(a(), x), f(a(), a()))),
    f#(a(), f(a(), x)) -> f#(a(), a())}
  TRS:
  {f(a(), f(a(), x)) -> f(a(), f(f(a(), x), f(a(), a())))}
  UR:
   {f(a(), f(a(), x)) -> f(a(), f(f(a(), x), f(a(), a())))}
   EDG:
    {(f#(a(), f(a(), x)) -> f#(a(), f(f(a(), x), f(a(), a()))), f#(a(), f(a(), x)) -> f#(f(a(), x), f(a(), a())))
     (f#(a(), f(a(), x)) -> f#(a(), f(f(a(), x), f(a(), a()))), f#(a(), f(a(), x)) -> f#(a(), f(f(a(), x), f(a(), a()))))
     (f#(a(), f(a(), x)) -> f#(a(), f(f(a(), x), f(a(), a()))), f#(a(), f(a(), x)) -> f#(a(), a()))}
    STATUS:
     arrows: 0.666667
     SCCS (1):
      Scc:
       {f#(a(), f(a(), x)) -> f#(a(), f(f(a(), x), f(a(), a())))}
      
      SCC (1):
       Strict:
        {f#(a(), f(a(), x)) -> f#(a(), f(f(a(), x), f(a(), a())))}
       Weak:
       {f(a(), f(a(), x)) -> f(a(), f(f(a(), x), f(a(), a())))}
       Fail