YES(?,O(n^1))
TRS:
 {f(f(a(), x), y) -> f(y, f(x, f(a(), f(h a(), a()))))}
 DUP: We consider a non-duplicating system.
  Trs:
   {f(f(a(), x), y) -> f(y, f(x, f(a(), f(h a(), a()))))}
  BOUND:
   Bound: match(-raise)-bounded by 2
   Automaton:
    {
           a_2() -> 7*
           a_1() -> 2*
           a_0() -> 1*
          h_2(7) -> 8*
          h_1(2) -> 3*
          h_0(1) -> 1*
     f_2(11, 11) -> 6*
       f_2(8, 7) -> 9*
       f_2(7, 9) -> 10*
      f_2(6, 11) -> 6*
      f_2(5, 11) -> 6*
      f_2(4, 10) -> 11*
      f_1(11, 6) -> 6*
       f_1(6, 6) -> 1*
       f_1(6, 5) -> 6*
       f_1(5, 6) -> 6*
       f_1(5, 5) -> 6*
       f_1(3, 2) -> 4*
       f_1(2, 4) -> 5*
       f_1(1, 6) -> 1*
       f_1(1, 5) -> 6*
       f_0(1, 1) -> 1*
    }
   Strict:
    {}
   Qed