MAYBE

Problem:
 active(__(__(X,Y),Z)) -> mark(__(X,__(Y,Z)))
 active(__(X,nil())) -> mark(X)
 active(__(nil(),X)) -> mark(X)
 active(and(tt(),X)) -> mark(X)
 active(isNePal(__(I,__(P,I)))) -> mark(tt())
 mark(__(X1,X2)) -> active(__(mark(X1),mark(X2)))
 mark(nil()) -> active(nil())
 mark(and(X1,X2)) -> active(and(mark(X1),X2))
 mark(tt()) -> active(tt())
 mark(isNePal(X)) -> active(isNePal(mark(X)))
 __(mark(X1),X2) -> __(X1,X2)
 __(X1,mark(X2)) -> __(X1,X2)
 __(active(X1),X2) -> __(X1,X2)
 __(X1,active(X2)) -> __(X1,X2)
 and(mark(X1),X2) -> and(X1,X2)
 and(X1,mark(X2)) -> and(X1,X2)
 and(active(X1),X2) -> and(X1,X2)
 and(X1,active(X2)) -> and(X1,X2)
 isNePal(mark(X)) -> isNePal(X)
 isNePal(active(X)) -> isNePal(X)

Proof:
 DP Processor:
  DPs:
   active#(__(__(X,Y),Z)) -> __#(Y,Z)
   active#(__(__(X,Y),Z)) -> __#(X,__(Y,Z))
   active#(__(__(X,Y),Z)) -> mark#(__(X,__(Y,Z)))
   active#(__(X,nil())) -> mark#(X)
   active#(__(nil(),X)) -> mark#(X)
   active#(and(tt(),X)) -> mark#(X)
   active#(isNePal(__(I,__(P,I)))) -> mark#(tt())
   mark#(__(X1,X2)) -> mark#(X2)
   mark#(__(X1,X2)) -> mark#(X1)
   mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
   mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
   mark#(nil()) -> active#(nil())
   mark#(and(X1,X2)) -> mark#(X1)
   mark#(and(X1,X2)) -> and#(mark(X1),X2)
   mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
   mark#(tt()) -> active#(tt())
   mark#(isNePal(X)) -> mark#(X)
   mark#(isNePal(X)) -> isNePal#(mark(X))
   mark#(isNePal(X)) -> active#(isNePal(mark(X)))
   __#(mark(X1),X2) -> __#(X1,X2)
   __#(X1,mark(X2)) -> __#(X1,X2)
   __#(active(X1),X2) -> __#(X1,X2)
   __#(X1,active(X2)) -> __#(X1,X2)
   and#(mark(X1),X2) -> and#(X1,X2)
   and#(X1,mark(X2)) -> and#(X1,X2)
   and#(active(X1),X2) -> and#(X1,X2)
   and#(X1,active(X2)) -> and#(X1,X2)
   isNePal#(mark(X)) -> isNePal#(X)
   isNePal#(active(X)) -> isNePal#(X)
  TRS:
   active(__(__(X,Y),Z)) -> mark(__(X,__(Y,Z)))
   active(__(X,nil())) -> mark(X)
   active(__(nil(),X)) -> mark(X)
   active(and(tt(),X)) -> mark(X)
   active(isNePal(__(I,__(P,I)))) -> mark(tt())
   mark(__(X1,X2)) -> active(__(mark(X1),mark(X2)))
   mark(nil()) -> active(nil())
   mark(and(X1,X2)) -> active(and(mark(X1),X2))
   mark(tt()) -> active(tt())
   mark(isNePal(X)) -> active(isNePal(mark(X)))
   __(mark(X1),X2) -> __(X1,X2)
   __(X1,mark(X2)) -> __(X1,X2)
   __(active(X1),X2) -> __(X1,X2)
   __(X1,active(X2)) -> __(X1,X2)
   and(mark(X1),X2) -> and(X1,X2)
   and(X1,mark(X2)) -> and(X1,X2)
   and(active(X1),X2) -> and(X1,X2)
   and(X1,active(X2)) -> and(X1,X2)
   isNePal(mark(X)) -> isNePal(X)
   isNePal(active(X)) -> isNePal(X)
  CDG Processor:
   DPs:
    active#(__(__(X,Y),Z)) -> __#(Y,Z)
    active#(__(__(X,Y),Z)) -> __#(X,__(Y,Z))
    active#(__(__(X,Y),Z)) -> mark#(__(X,__(Y,Z)))
    active#(__(X,nil())) -> mark#(X)
    active#(__(nil(),X)) -> mark#(X)
    active#(and(tt(),X)) -> mark#(X)
    active#(isNePal(__(I,__(P,I)))) -> mark#(tt())
    mark#(__(X1,X2)) -> mark#(X2)
    mark#(__(X1,X2)) -> mark#(X1)
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    mark#(nil()) -> active#(nil())
    mark#(and(X1,X2)) -> mark#(X1)
    mark#(and(X1,X2)) -> and#(mark(X1),X2)
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
    mark#(tt()) -> active#(tt())
    mark#(isNePal(X)) -> mark#(X)
    mark#(isNePal(X)) -> isNePal#(mark(X))
    mark#(isNePal(X)) -> active#(isNePal(mark(X)))
    __#(mark(X1),X2) -> __#(X1,X2)
    __#(X1,mark(X2)) -> __#(X1,X2)
    __#(active(X1),X2) -> __#(X1,X2)
    __#(X1,active(X2)) -> __#(X1,X2)
    and#(mark(X1),X2) -> and#(X1,X2)
    and#(X1,mark(X2)) -> and#(X1,X2)
    and#(active(X1),X2) -> and#(X1,X2)
    and#(X1,active(X2)) -> and#(X1,X2)
    isNePal#(mark(X)) -> isNePal#(X)
    isNePal#(active(X)) -> isNePal#(X)
   TRS:
    active(__(__(X,Y),Z)) -> mark(__(X,__(Y,Z)))
    active(__(X,nil())) -> mark(X)
    active(__(nil(),X)) -> mark(X)
    active(and(tt(),X)) -> mark(X)
    active(isNePal(__(I,__(P,I)))) -> mark(tt())
    mark(__(X1,X2)) -> active(__(mark(X1),mark(X2)))
    mark(nil()) -> active(nil())
    mark(and(X1,X2)) -> active(and(mark(X1),X2))
    mark(tt()) -> active(tt())
    mark(isNePal(X)) -> active(isNePal(mark(X)))
    __(mark(X1),X2) -> __(X1,X2)
    __(X1,mark(X2)) -> __(X1,X2)
    __(active(X1),X2) -> __(X1,X2)
    __(X1,active(X2)) -> __(X1,X2)
    and(mark(X1),X2) -> and(X1,X2)
    and(X1,mark(X2)) -> and(X1,X2)
    and(active(X1),X2) -> and(X1,X2)
    and(X1,active(X2)) -> and(X1,X2)
    isNePal(mark(X)) -> isNePal(X)
    isNePal(active(X)) -> isNePal(X)
   graph:
    isNePal#(mark(X)) -> isNePal#(X) ->
    isNePal#(mark(X)) -> isNePal#(X)
    isNePal#(mark(X)) -> isNePal#(X) ->
    isNePal#(active(X)) -> isNePal#(X)
    isNePal#(active(X)) -> isNePal#(X) ->
    isNePal#(mark(X)) -> isNePal#(X)
    isNePal#(active(X)) -> isNePal#(X) ->
    isNePal#(active(X)) -> isNePal#(X)
    and#(mark(X1),X2) -> and#(X1,X2) ->
    and#(mark(X1),X2) -> and#(X1,X2)
    and#(mark(X1),X2) -> and#(X1,X2) ->
    and#(X1,mark(X2)) -> and#(X1,X2)
    and#(mark(X1),X2) -> and#(X1,X2) ->
    and#(active(X1),X2) -> and#(X1,X2)
    and#(mark(X1),X2) -> and#(X1,X2) ->
    and#(X1,active(X2)) -> and#(X1,X2)
    and#(active(X1),X2) -> and#(X1,X2) ->
    and#(mark(X1),X2) -> and#(X1,X2)
    and#(active(X1),X2) -> and#(X1,X2) ->
    and#(X1,mark(X2)) -> and#(X1,X2)
    and#(active(X1),X2) -> and#(X1,X2) ->
    and#(active(X1),X2) -> and#(X1,X2)
    and#(active(X1),X2) -> and#(X1,X2) ->
    and#(X1,active(X2)) -> and#(X1,X2)
    and#(X1,mark(X2)) -> and#(X1,X2) ->
    and#(mark(X1),X2) -> and#(X1,X2)
    and#(X1,mark(X2)) -> and#(X1,X2) ->
    and#(X1,mark(X2)) -> and#(X1,X2)
    and#(X1,mark(X2)) -> and#(X1,X2) ->
    and#(active(X1),X2) -> and#(X1,X2)
    and#(X1,mark(X2)) -> and#(X1,X2) ->
    and#(X1,active(X2)) -> and#(X1,X2)
    and#(X1,active(X2)) -> and#(X1,X2) ->
    and#(mark(X1),X2) -> and#(X1,X2)
    and#(X1,active(X2)) -> and#(X1,X2) ->
    and#(X1,mark(X2)) -> and#(X1,X2)
    and#(X1,active(X2)) -> and#(X1,X2) ->
    and#(active(X1),X2) -> and#(X1,X2)
    and#(X1,active(X2)) -> and#(X1,X2) ->
    and#(X1,active(X2)) -> and#(X1,X2)
    mark#(isNePal(X)) -> isNePal#(mark(X)) ->
    isNePal#(mark(X)) -> isNePal#(X)
    mark#(isNePal(X)) -> isNePal#(mark(X)) ->
    isNePal#(active(X)) -> isNePal#(X)
    mark#(isNePal(X)) -> mark#(X) -> mark#(__(X1,X2)) -> mark#(X2)
    mark#(isNePal(X)) -> mark#(X) -> mark#(__(X1,X2)) -> mark#(X1)
    mark#(isNePal(X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    mark#(isNePal(X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    mark#(isNePal(X)) -> mark#(X) -> mark#(nil()) -> active#(nil())
    mark#(isNePal(X)) -> mark#(X) -> mark#(and(X1,X2)) -> mark#(X1)
    mark#(isNePal(X)) -> mark#(X) ->
    mark#(and(X1,X2)) -> and#(mark(X1),X2)
    mark#(isNePal(X)) -> mark#(X) ->
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
    mark#(isNePal(X)) -> mark#(X) -> mark#(tt()) -> active#(tt())
    mark#(isNePal(X)) -> mark#(X) -> mark#(isNePal(X)) -> mark#(X)
    mark#(isNePal(X)) -> mark#(X) ->
    mark#(isNePal(X)) -> isNePal#(mark(X))
    mark#(isNePal(X)) -> mark#(X) ->
    mark#(isNePal(X)) -> active#(isNePal(mark(X)))
    mark#(isNePal(X)) -> active#(isNePal(mark(X))) ->
    active#(isNePal(__(I,__(P,I)))) -> mark#(tt())
    mark#(and(X1,X2)) -> and#(mark(X1),X2) ->
    and#(mark(X1),X2) -> and#(X1,X2)
    mark#(and(X1,X2)) -> and#(mark(X1),X2) ->
    and#(X1,mark(X2)) -> and#(X1,X2)
    mark#(and(X1,X2)) -> and#(mark(X1),X2) ->
    and#(active(X1),X2) -> and#(X1,X2)
    mark#(and(X1,X2)) -> and#(mark(X1),X2) ->
    and#(X1,active(X2)) -> and#(X1,X2)
    mark#(and(X1,X2)) -> mark#(X1) -> mark#(__(X1,X2)) -> mark#(X2)
    mark#(and(X1,X2)) -> mark#(X1) -> mark#(__(X1,X2)) -> mark#(X1)
    mark#(and(X1,X2)) -> mark#(X1) ->
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    mark#(and(X1,X2)) -> mark#(X1) ->
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    mark#(and(X1,X2)) -> mark#(X1) -> mark#(nil()) -> active#(nil())
    mark#(and(X1,X2)) -> mark#(X1) -> mark#(and(X1,X2)) -> mark#(X1)
    mark#(and(X1,X2)) -> mark#(X1) ->
    mark#(and(X1,X2)) -> and#(mark(X1),X2)
    mark#(and(X1,X2)) -> mark#(X1) ->
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
    mark#(and(X1,X2)) -> mark#(X1) -> mark#(tt()) -> active#(tt())
    mark#(and(X1,X2)) -> mark#(X1) -> mark#(isNePal(X)) -> mark#(X)
    mark#(and(X1,X2)) -> mark#(X1) ->
    mark#(isNePal(X)) -> isNePal#(mark(X))
    mark#(and(X1,X2)) -> mark#(X1) ->
    mark#(isNePal(X)) -> active#(isNePal(mark(X)))
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2)) ->
    active#(and(tt(),X)) -> mark#(X)
    mark#(__(X1,X2)) -> mark#(X2) -> mark#(__(X1,X2)) -> mark#(X2)
    mark#(__(X1,X2)) -> mark#(X2) -> mark#(__(X1,X2)) -> mark#(X1)
    mark#(__(X1,X2)) -> mark#(X2) ->
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    mark#(__(X1,X2)) -> mark#(X2) ->
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    mark#(__(X1,X2)) -> mark#(X2) -> mark#(nil()) -> active#(nil())
    mark#(__(X1,X2)) -> mark#(X2) -> mark#(and(X1,X2)) -> mark#(X1)
    mark#(__(X1,X2)) -> mark#(X2) ->
    mark#(and(X1,X2)) -> and#(mark(X1),X2)
    mark#(__(X1,X2)) -> mark#(X2) ->
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
    mark#(__(X1,X2)) -> mark#(X2) -> mark#(tt()) -> active#(tt())
    mark#(__(X1,X2)) -> mark#(X2) -> mark#(isNePal(X)) -> mark#(X)
    mark#(__(X1,X2)) -> mark#(X2) ->
    mark#(isNePal(X)) -> isNePal#(mark(X))
    mark#(__(X1,X2)) -> mark#(X2) ->
    mark#(isNePal(X)) -> active#(isNePal(mark(X)))
    mark#(__(X1,X2)) -> mark#(X1) -> mark#(__(X1,X2)) -> mark#(X2)
    mark#(__(X1,X2)) -> mark#(X1) -> mark#(__(X1,X2)) -> mark#(X1)
    mark#(__(X1,X2)) -> mark#(X1) ->
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    mark#(__(X1,X2)) -> mark#(X1) ->
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    mark#(__(X1,X2)) -> mark#(X1) -> mark#(nil()) -> active#(nil())
    mark#(__(X1,X2)) -> mark#(X1) -> mark#(and(X1,X2)) -> mark#(X1)
    mark#(__(X1,X2)) -> mark#(X1) ->
    mark#(and(X1,X2)) -> and#(mark(X1),X2)
    mark#(__(X1,X2)) -> mark#(X1) ->
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
    mark#(__(X1,X2)) -> mark#(X1) -> mark#(tt()) -> active#(tt())
    mark#(__(X1,X2)) -> mark#(X1) -> mark#(isNePal(X)) -> mark#(X)
    mark#(__(X1,X2)) -> mark#(X1) ->
    mark#(isNePal(X)) -> isNePal#(mark(X))
    mark#(__(X1,X2)) -> mark#(X1) ->
    mark#(isNePal(X)) -> active#(isNePal(mark(X)))
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2)) ->
    __#(mark(X1),X2) -> __#(X1,X2)
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2)) ->
    __#(X1,mark(X2)) -> __#(X1,X2)
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2)) ->
    __#(active(X1),X2) -> __#(X1,X2)
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2)) ->
    __#(X1,active(X2)) -> __#(X1,X2)
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2))) ->
    active#(__(__(X,Y),Z)) -> __#(Y,Z)
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2))) ->
    active#(__(__(X,Y),Z)) -> __#(X,__(Y,Z))
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2))) ->
    active#(__(__(X,Y),Z)) -> mark#(__(X,__(Y,Z)))
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2))) ->
    active#(__(X,nil())) -> mark#(X)
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2))) ->
    active#(__(nil(),X)) -> mark#(X)
    __#(mark(X1),X2) -> __#(X1,X2) -> __#(mark(X1),X2) -> __#(X1,X2)
    __#(mark(X1),X2) -> __#(X1,X2) -> __#(X1,mark(X2)) -> __#(X1,X2)
    __#(mark(X1),X2) -> __#(X1,X2) ->
    __#(active(X1),X2) -> __#(X1,X2)
    __#(mark(X1),X2) -> __#(X1,X2) ->
    __#(X1,active(X2)) -> __#(X1,X2)
    __#(active(X1),X2) -> __#(X1,X2) ->
    __#(mark(X1),X2) -> __#(X1,X2)
    __#(active(X1),X2) -> __#(X1,X2) ->
    __#(X1,mark(X2)) -> __#(X1,X2)
    __#(active(X1),X2) -> __#(X1,X2) ->
    __#(active(X1),X2) -> __#(X1,X2)
    __#(active(X1),X2) -> __#(X1,X2) ->
    __#(X1,active(X2)) -> __#(X1,X2)
    __#(X1,mark(X2)) -> __#(X1,X2) -> __#(mark(X1),X2) -> __#(X1,X2)
    __#(X1,mark(X2)) -> __#(X1,X2) -> __#(X1,mark(X2)) -> __#(X1,X2)
    __#(X1,mark(X2)) -> __#(X1,X2) ->
    __#(active(X1),X2) -> __#(X1,X2)
    __#(X1,mark(X2)) -> __#(X1,X2) ->
    __#(X1,active(X2)) -> __#(X1,X2)
    __#(X1,active(X2)) -> __#(X1,X2) ->
    __#(mark(X1),X2) -> __#(X1,X2)
    __#(X1,active(X2)) -> __#(X1,X2) ->
    __#(X1,mark(X2)) -> __#(X1,X2)
    __#(X1,active(X2)) -> __#(X1,X2) ->
    __#(active(X1),X2) -> __#(X1,X2)
    __#(X1,active(X2)) -> __#(X1,X2) ->
    __#(X1,active(X2)) -> __#(X1,X2)
    active#(isNePal(__(I,__(P,I)))) -> mark#(tt()) ->
    mark#(tt()) -> active#(tt())
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> mark#(X2)
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> mark#(X1)
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(nil()) -> active#(nil())
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(and(X1,X2)) -> mark#(X1)
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(and(X1,X2)) -> and#(mark(X1),X2)
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(tt()) -> active#(tt())
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(isNePal(X)) -> mark#(X)
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(isNePal(X)) -> isNePal#(mark(X))
    active#(and(tt(),X)) -> mark#(X) ->
    mark#(isNePal(X)) -> active#(isNePal(mark(X)))
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> mark#(X2)
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> mark#(X1)
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(nil()) -> active#(nil())
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(and(X1,X2)) -> mark#(X1)
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(and(X1,X2)) -> and#(mark(X1),X2)
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(tt()) -> active#(tt())
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(isNePal(X)) -> mark#(X)
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(isNePal(X)) -> isNePal#(mark(X))
    active#(__(nil(),X)) -> mark#(X) ->
    mark#(isNePal(X)) -> active#(isNePal(mark(X)))
    active#(__(__(X,Y),Z)) -> mark#(__(X,__(Y,Z))) ->
    mark#(__(X1,X2)) -> mark#(X2)
    active#(__(__(X,Y),Z)) -> mark#(__(X,__(Y,Z))) ->
    mark#(__(X1,X2)) -> mark#(X1)
    active#(__(__(X,Y),Z)) -> mark#(__(X,__(Y,Z))) ->
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    active#(__(__(X,Y),Z)) -> mark#(__(X,__(Y,Z))) ->
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    active#(__(__(X,Y),Z)) -> __#(Y,Z) ->
    __#(mark(X1),X2) -> __#(X1,X2)
    active#(__(__(X,Y),Z)) -> __#(Y,Z) ->
    __#(X1,mark(X2)) -> __#(X1,X2)
    active#(__(__(X,Y),Z)) -> __#(Y,Z) ->
    __#(active(X1),X2) -> __#(X1,X2)
    active#(__(__(X,Y),Z)) -> __#(Y,Z) ->
    __#(X1,active(X2)) -> __#(X1,X2)
    active#(__(__(X,Y),Z)) -> __#(X,__(Y,Z)) ->
    __#(mark(X1),X2) -> __#(X1,X2)
    active#(__(__(X,Y),Z)) -> __#(X,__(Y,Z)) ->
    __#(active(X1),X2) -> __#(X1,X2)
    active#(__(X,nil())) -> mark#(X) ->
    mark#(__(X1,X2)) -> mark#(X2)
    active#(__(X,nil())) -> mark#(X) ->
    mark#(__(X1,X2)) -> mark#(X1)
    active#(__(X,nil())) -> mark#(X) ->
    mark#(__(X1,X2)) -> __#(mark(X1),mark(X2))
    active#(__(X,nil())) -> mark#(X) ->
    mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
    active#(__(X,nil())) -> mark#(X) ->
    mark#(nil()) -> active#(nil())
    active#(__(X,nil())) -> mark#(X) ->
    mark#(and(X1,X2)) -> mark#(X1)
    active#(__(X,nil())) -> mark#(X) ->
    mark#(and(X1,X2)) -> and#(mark(X1),X2)
    active#(__(X,nil())) -> mark#(X) ->
    mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
    active#(__(X,nil())) -> mark#(X) ->
    mark#(tt()) -> active#(tt())
    active#(__(X,nil())) -> mark#(X) ->
    mark#(isNePal(X)) -> mark#(X)
    active#(__(X,nil())) -> mark#(X) ->
    mark#(isNePal(X)) -> isNePal#(mark(X))
    active#(__(X,nil())) -> mark#(X) -> mark#(isNePal(X)) -> active#(isNePal(mark(X)))
   SCC Processor:
    #sccs: 4
    #rules: 20
    #arcs: 148/841
    DPs:
     mark#(isNePal(X)) -> mark#(X)
     mark#(and(X1,X2)) -> active#(and(mark(X1),X2))
     active#(and(tt(),X)) -> mark#(X)
     mark#(and(X1,X2)) -> mark#(X1)
     mark#(__(X1,X2)) -> active#(__(mark(X1),mark(X2)))
     active#(__(nil(),X)) -> mark#(X)
     mark#(__(X1,X2)) -> mark#(X1)
     mark#(__(X1,X2)) -> mark#(X2)
     active#(__(X,nil())) -> mark#(X)
     active#(__(__(X,Y),Z)) -> mark#(__(X,__(Y,Z)))
    TRS:
     active(__(__(X,Y),Z)) -> mark(__(X,__(Y,Z)))
     active(__(X,nil())) -> mark(X)
     active(__(nil(),X)) -> mark(X)
     active(and(tt(),X)) -> mark(X)
     active(isNePal(__(I,__(P,I)))) -> mark(tt())
     mark(__(X1,X2)) -> active(__(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(and(X1,X2)) -> active(and(mark(X1),X2))
     mark(tt()) -> active(tt())
     mark(isNePal(X)) -> active(isNePal(mark(X)))
     __(mark(X1),X2) -> __(X1,X2)
     __(X1,mark(X2)) -> __(X1,X2)
     __(active(X1),X2) -> __(X1,X2)
     __(X1,active(X2)) -> __(X1,X2)
     and(mark(X1),X2) -> and(X1,X2)
     and(X1,mark(X2)) -> and(X1,X2)
     and(active(X1),X2) -> and(X1,X2)
     and(X1,active(X2)) -> and(X1,X2)
     isNePal(mark(X)) -> isNePal(X)
     isNePal(active(X)) -> isNePal(X)
    Open
    
    DPs:
     __#(X1,active(X2)) -> __#(X1,X2)
     __#(active(X1),X2) -> __#(X1,X2)
     __#(X1,mark(X2)) -> __#(X1,X2)
     __#(mark(X1),X2) -> __#(X1,X2)
    TRS:
     active(__(__(X,Y),Z)) -> mark(__(X,__(Y,Z)))
     active(__(X,nil())) -> mark(X)
     active(__(nil(),X)) -> mark(X)
     active(and(tt(),X)) -> mark(X)
     active(isNePal(__(I,__(P,I)))) -> mark(tt())
     mark(__(X1,X2)) -> active(__(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(and(X1,X2)) -> active(and(mark(X1),X2))
     mark(tt()) -> active(tt())
     mark(isNePal(X)) -> active(isNePal(mark(X)))
     __(mark(X1),X2) -> __(X1,X2)
     __(X1,mark(X2)) -> __(X1,X2)
     __(active(X1),X2) -> __(X1,X2)
     __(X1,active(X2)) -> __(X1,X2)
     and(mark(X1),X2) -> and(X1,X2)
     and(X1,mark(X2)) -> and(X1,X2)
     and(active(X1),X2) -> and(X1,X2)
     and(X1,active(X2)) -> and(X1,X2)
     isNePal(mark(X)) -> isNePal(X)
     isNePal(active(X)) -> isNePal(X)
    Open
    
    DPs:
     and#(mark(X1),X2) -> and#(X1,X2)
     and#(X1,active(X2)) -> and#(X1,X2)
     and#(active(X1),X2) -> and#(X1,X2)
     and#(X1,mark(X2)) -> and#(X1,X2)
    TRS:
     active(__(__(X,Y),Z)) -> mark(__(X,__(Y,Z)))
     active(__(X,nil())) -> mark(X)
     active(__(nil(),X)) -> mark(X)
     active(and(tt(),X)) -> mark(X)
     active(isNePal(__(I,__(P,I)))) -> mark(tt())
     mark(__(X1,X2)) -> active(__(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(and(X1,X2)) -> active(and(mark(X1),X2))
     mark(tt()) -> active(tt())
     mark(isNePal(X)) -> active(isNePal(mark(X)))
     __(mark(X1),X2) -> __(X1,X2)
     __(X1,mark(X2)) -> __(X1,X2)
     __(active(X1),X2) -> __(X1,X2)
     __(X1,active(X2)) -> __(X1,X2)
     and(mark(X1),X2) -> and(X1,X2)
     and(X1,mark(X2)) -> and(X1,X2)
     and(active(X1),X2) -> and(X1,X2)
     and(X1,active(X2)) -> and(X1,X2)
     isNePal(mark(X)) -> isNePal(X)
     isNePal(active(X)) -> isNePal(X)
    Open
    
    DPs:
     isNePal#(mark(X)) -> isNePal#(X)
     isNePal#(active(X)) -> isNePal#(X)
    TRS:
     active(__(__(X,Y),Z)) -> mark(__(X,__(Y,Z)))
     active(__(X,nil())) -> mark(X)
     active(__(nil(),X)) -> mark(X)
     active(and(tt(),X)) -> mark(X)
     active(isNePal(__(I,__(P,I)))) -> mark(tt())
     mark(__(X1,X2)) -> active(__(mark(X1),mark(X2)))
     mark(nil()) -> active(nil())
     mark(and(X1,X2)) -> active(and(mark(X1),X2))
     mark(tt()) -> active(tt())
     mark(isNePal(X)) -> active(isNePal(mark(X)))
     __(mark(X1),X2) -> __(X1,X2)
     __(X1,mark(X2)) -> __(X1,X2)
     __(active(X1),X2) -> __(X1,X2)
     __(X1,active(X2)) -> __(X1,X2)
     and(mark(X1),X2) -> and(X1,X2)
     and(X1,mark(X2)) -> and(X1,X2)
     and(active(X1),X2) -> and(X1,X2)
     and(X1,active(X2)) -> and(X1,X2)
     isNePal(mark(X)) -> isNePal(X)
     isNePal(active(X)) -> isNePal(X)
    Open