Input TRS:
    1: merge(x,nil()) -> x
    2: merge(nil(),y) -> y
    3: merge(++(x,y),++(u(),v())) -> ++(x,merge(y,++(u(),v())))
    4: merge(++(x,y),++(u(),v())) -> ++(u(),merge(++(x,y),v()))
Number of strict rules: 4
Direct Order(PosReal,>,Poly) ... removes: 4 1 2
 merge(x1,x2)	weight: (/ 1 2) + x1 + 2 * x2
     v()	weight: 0
     u()	weight: 0
    ++(x1,x2)	weight: (/ 4875 2) + x1 + x2
   nil()	weight: 0
Number of strict rules: 1
Direct Order(PosReal,>,Poly) ... removes: 3
 merge(x1,x2)	weight: (/ 11989 4) + 2 * x1 + x2
     v()	weight: 0
     u()	weight: 0
    ++(x1,x2)	weight: (/ 1 4) + x1 + x2
   nil()	weight: 0
Number of strict rules: 0
YES