Input TRS:
    1: f(a(),f(f(a(),x),a())) -> f(f(a(),f(a(),x)),a())
Number of strict rules: 1
Direct Order(PosReal,>,Poly) ... removes: 1
     a()	weight: 0
     f(x1,x2)	weight: (/ 1 8) + x1 + 2 * x2
Number of strict rules: 0
YES