YES
Input TRS:
AC symbols: plus
      1: f(plus(a(),a())) -> plus(f(a()),f(a()))
      2: plus(a(),f(f(a()))) -> plus(f(a()),f(a()))
Number of strict rules: 2
Direct POLO(bPol) ... removes: 1 2
      a 	w: 1
      f 	w: 2 * x1
      plus	w: x1 + x2 + 21239
Number of strict rules: 0