MAYBE
Time: 0.054235
TRS:
 {f(f(a(), x), a()) -> f(a(), f(f(a(), f(a(), a())), x))}
 DP:
  DP:
   {f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x),
    f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)),
    f#(f(a(), x), a()) -> f#(a(), f(a(), a())),
    f#(f(a(), x), a()) -> f#(a(), a())}
  TRS:
  {f(f(a(), x), a()) -> f(a(), f(f(a(), f(a(), a())), x))}
  UR:
   {f(f(a(), x), a()) -> f(a(), f(f(a(), f(a(), a())), x))}
   EDG:
    {(f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)), f#(f(a(), x), a()) -> f#(a(), a()))
     (f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)), f#(f(a(), x), a()) -> f#(a(), f(a(), a())))
     (f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)), f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)))
     (f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)), f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x))
     (f#(f(a(), x), a()) -> f#(a(), a()), f#(f(a(), x), a()) -> f#(a(), a()))
     (f#(f(a(), x), a()) -> f#(a(), a()), f#(f(a(), x), a()) -> f#(a(), f(a(), a())))
     (f#(f(a(), x), a()) -> f#(a(), a()), f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)))
     (f#(f(a(), x), a()) -> f#(a(), a()), f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x))
     (f#(f(a(), x), a()) -> f#(a(), f(a(), a())), f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x))
     (f#(f(a(), x), a()) -> f#(a(), f(a(), a())), f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)))
     (f#(f(a(), x), a()) -> f#(a(), f(a(), a())), f#(f(a(), x), a()) -> f#(a(), f(a(), a())))
     (f#(f(a(), x), a()) -> f#(a(), f(a(), a())), f#(f(a(), x), a()) -> f#(a(), a()))
     (f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x), f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x))
     (f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x), f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)))
     (f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x), f#(f(a(), x), a()) -> f#(a(), f(a(), a())))
     (f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x), f#(f(a(), x), a()) -> f#(a(), a()))}
    STATUS:
     arrows: 0.000000
     SCCS (1):
      Scc:
       {f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x),
        f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)),
        f#(f(a(), x), a()) -> f#(a(), f(a(), a())),
        f#(f(a(), x), a()) -> f#(a(), a())}
      
      SCC (4):
       Strict:
        {f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x),
         f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x)),
         f#(f(a(), x), a()) -> f#(a(), f(a(), a())),
         f#(f(a(), x), a()) -> f#(a(), a())}
       Weak:
       {f(f(a(), x), a()) -> f(a(), f(f(a(), f(a(), a())), x))}
       POLY:
        Mode: weak, max_in=1, output_bits=-1, dnum=1, ur=true
        Interpretation:
         [f](x0, x1) = 1,
         
         [a] = 0,
         
         [f#](x0, x1) = x0
        Strict:
         f#(f(a(), x), a()) -> f#(a(), a())
         1 + 0x >= 0
         f#(f(a(), x), a()) -> f#(a(), f(a(), a()))
         1 + 0x >= 0
         f#(f(a(), x), a()) -> f#(a(), f(f(a(), f(a(), a())), x))
         1 + 0x >= 0 + 0x
         f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x)
         1 + 0x >= 1 + 0x
        Weak:
         f(f(a(), x), a()) -> f(a(), f(f(a(), f(a(), a())), x))
         1 + 0x >= 1 + 0x
       SCCS (1):
        Scc:
         {f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x)}
        
        SCC (1):
         Strict:
          {f#(f(a(), x), a()) -> f#(f(a(), f(a(), a())), x)}
         Weak:
         {f(f(a(), x), a()) -> f(a(), f(f(a(), f(a(), a())), x))}
         Fail