Input TRS:
    1: active(__(__(X,Y),Z)) -> mark(__(X,__(Y,Z)))
    2: active(__(X,nil())) -> mark(X)
    3: active(__(nil(),X)) -> mark(X)
    4: active(and(tt(),X)) -> mark(X)
    5: active(isNePal(__(I,__(P,I)))) -> mark(tt())
    6: mark(__(X1,X2)) -> active(__(mark(X1),mark(X2)))
    7: mark(nil()) -> active(nil())
    8: mark(and(X1,X2)) -> active(and(mark(X1),X2))
    9: mark(tt()) -> active(tt())
    10: mark(isNePal(X)) -> active(isNePal(mark(X)))
    11: __(mark(X1),X2) -> __(X1,X2)
    12: __(X1,mark(X2)) -> __(X1,X2)
    13: __(active(X1),X2) -> __(X1,X2)
    14: __(X1,active(X2)) -> __(X1,X2)
    15: and(mark(X1),X2) -> and(X1,X2)
    16: and(X1,mark(X2)) -> and(X1,X2)
    17: and(active(X1),X2) -> and(X1,X2)
    18: and(X1,active(X2)) -> and(X1,X2)
    19: isNePal(mark(X)) -> isNePal(X)
    20: isNePal(active(X)) -> isNePal(X)
Number of strict rules: 20
Direct Order(PosReal,>,Poly) ... removes: 4 3 5 2
   and(x1,x2)	weight: (/ 127565 4) + x1 + x2
isNePal(x1)	weight: (/ 1 4) + 2 * x1
   nil()	weight: 0
  mark(x1)	weight: x1
active(x1)	weight: x1
    tt()	weight: 0
    __(x1,x2)	weight: (/ 86621 4) + x1 + x2
Number of strict rules: 16
Direct Order(PosReal,>,Poly) ... removes: 1
   and(x1,x2)	weight: (/ 1 8) + x1 + x2
isNePal(x1)	weight: (/ 21977 8) + x1
   nil()	weight: 0
  mark(x1)	weight: x1
active(x1)	weight: x1
    tt()	weight: 0
    __(x1,x2)	weight: (/ 1 8) + 2 * x1 + x2
Number of strict rules: 15
Direct Order(PosReal,>,Poly) ... removes: 10 6
   and(x1,x2)	weight: x1 + x2
isNePal(x1)	weight: (/ 133385 8) + x1
   nil()	weight: 0
  mark(x1)	weight: 2 * x1
active(x1)	weight: x1
    tt()	weight: 0
    __(x1,x2)	weight: (/ 1 8) + 2 * x1 + x2
Number of strict rules: 13
Direct Order(PosReal,>,Poly) ... removes: 15 16 19 7 12 11 9
   and(x1,x2)	weight: (/ 1 16) + x1 + x2
isNePal(x1)	weight: (/ 1 16) + x1
   nil()	weight: 0
  mark(x1)	weight: (/ 1 8) + x1
active(x1)	weight: x1
    tt()	weight: 0
    __(x1,x2)	weight: (/ 1 16) + x1 + 2 * x2
Number of strict rules: 6
Direct Order(PosReal,>,Poly) ... removes: 8
   and(x1,x2)	weight: (/ 1 16) + x1 + x2
isNePal(x1)	weight: (/ 1 16) + x1
   nil()	weight: 0
  mark(x1)	weight: (/ 1 8) + 2 * x1
active(x1)	weight: x1
    tt()	weight: 0
    __(x1,x2)	weight: (/ 1 16) + x1 + 2 * x2
Number of strict rules: 5
Direct Order(PosReal,>,Poly) ... removes: 18 17 20 14 13
   and(x1,x2)	weight: (/ 1 16) + x1 + 2 * x2
isNePal(x1)	weight: (/ 1 4) + 2 * x1
   nil()	weight: 0
  mark(x1)	weight: (/ 3 16) + 2 * x1
active(x1)	weight: (/ 1 16) + x1
    tt()	weight: 0
    __(x1,x2)	weight: (/ 1 16) + x1 + 2 * x2
Number of strict rules: 0
YES