YES
Input TRS:
      1: a__app(nil(),YS) -> mark(YS)
      2: a__app(cons(X,XS),YS) -> cons(mark(X),app(XS,YS))
      3: a__from(X) -> cons(mark(X),from(s(X)))
      4: a__zWadr(nil(),YS) -> nil()
      5: a__zWadr(XS,nil()) -> nil()
      6: a__zWadr(cons(X,XS),cons(Y,YS)) -> cons(a__app(mark(Y),cons(mark(X),nil())),zWadr(XS,YS))
      7: a__prefix(L) -> cons(nil(),zWadr(L,prefix(L)))
      8: mark(app(X1,X2)) -> a__app(mark(X1),mark(X2))
      9: mark(from(X)) -> a__from(mark(X))
      10: mark(zWadr(X1,X2)) -> a__zWadr(mark(X1),mark(X2))
      11: mark(prefix(X)) -> a__prefix(mark(X))
      12: mark(nil()) -> nil()
      13: mark(cons(X1,X2)) -> cons(mark(X1),X2)
      14: mark(s(X)) -> s(mark(X))
      15: a__app(X1,X2) -> app(X1,X2)
      16: a__from(X) -> from(X)
      17: a__zWadr(X1,X2) -> zWadr(X1,X2)
      18: a__prefix(X) -> prefix(X)
Number of strict rules: 18
Direct POLO(bPol) ... failed.
Uncurrying ... failed.
Dependency Pairs:
     #1: #a__app(cons(X,XS),YS) -> #mark(X)
     #2: #a__zWadr(cons(X,XS),cons(Y,YS)) -> #a__app(mark(Y),cons(mark(X),nil()))
     #3: #a__zWadr(cons(X,XS),cons(Y,YS)) -> #mark(Y)
     #4: #a__zWadr(cons(X,XS),cons(Y,YS)) -> #mark(X)
     #5: #mark(cons(X1,X2)) -> #mark(X1)
     #6: #mark(from(X)) -> #a__from(mark(X))
     #7: #mark(from(X)) -> #mark(X)
     #8: #mark(prefix(X)) -> #a__prefix(mark(X))
     #9: #mark(prefix(X)) -> #mark(X)
     #10: #mark(s(X)) -> #mark(X)
     #11: #mark(zWadr(X1,X2)) -> #a__zWadr(mark(X1),mark(X2))
     #12: #mark(zWadr(X1,X2)) -> #mark(X1)
     #13: #mark(zWadr(X1,X2)) -> #mark(X2)
     #14: #a__from(X) -> #mark(X)
     #15: #a__app(nil(),YS) -> #mark(YS)
     #16: #mark(app(X1,X2)) -> #a__app(mark(X1),mark(X2))
     #17: #mark(app(X1,X2)) -> #mark(X1)
     #18: #mark(app(X1,X2)) -> #mark(X2)
Number of SCCs: 1, DPs: 17
  SCC { #1..7 #9..18 }
POLO(Sum)... succeeded.
      #a__zWadr	w: x1 + x2 + 4
      s 	w: x1 + 1
      #a__from	w: x1 + 2
      a__prefix	w: x1 + 18460
      a__from	w: x1 + 2
      prefix	w: x1 + 18460
      #a__app	w: x1 + x2
      a__app	w: x1 + x2 + 2
      zWadr	w: x1 + x2 + 4
      a__zWadr	w: x1 + x2 + 4
      #a__prefix	w: 0
      #mark	w: x1 + 1
      from	w: x1 + 2
      nil	w: 18459
      mark	w: x1
      cons	w: x1 + 1
      app	w: x1 + x2 + 2
    USABLE RULES: { 1..18 }
    Removed DPs: #2..7 #9..18
Number of SCCs: 0, DPs: 0