Input TRS:
    1: rev(a()) -> a()
    2: rev(b()) -> b()
    3: rev(++(x,y)) -> ++(rev(y),rev(x))
    4: rev(++(x,x)) -> rev(x)
Number of strict rules: 4
Direct Order(PosReal,>,Poly) ... removes: 4
     a()	weight: 0
     b()	weight: 0
    ++(x1,x2)	weight: (/ 1 4) + x1 + x2
   rev(x1)	weight: x1
Number of strict rules: 3
Direct Order(PosReal,>,Poly) ... removes: 1 3 2
     a()	weight: 0
     b()	weight: 0
    ++(x1,x2)	weight: (/ 1 4) + 2 * x1 + 2 * x2
   rev(x1)	weight: (/ 1 16) + 2 * x1
Number of strict rules: 0
YES