MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          U11(tt(),L) -> U12(tt(),activate(L))
          U12(tt(),L) -> s(length(activate(L)))
          U21(tt(),IL,M,N) -> U22(tt(),activate(IL),activate(M),activate(N))
          U22(tt(),IL,M,N) -> U23(tt(),activate(IL),activate(M),activate(N))
          U23(tt(),IL,M,N) -> cons(activate(N),n__take(activate(M),activate(IL)))
          activate(X) -> X
          activate(n__take(X1,X2)) -> take(activate(X1),activate(X2))
          activate(n__zeros()) -> zeros()
          length(cons(N,L)) -> U11(tt(),activate(L))
          length(nil()) -> 0()
          take(X1,X2) -> n__take(X1,X2)
          take(0(),IL) -> nil()
          take(s(M),cons(N,IL)) -> U21(tt(),activate(IL),M,N)
          zeros() -> cons(0(),n__zeros())
          zeros() -> n__zeros()
      - Signature:
          {U11/2,U12/2,U21/4,U22/4,U23/4,activate/1,length/1,take/2,zeros/0} / {0/0,cons/2,n__take/2,n__zeros/0,nil/0
          ,s/1,tt/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {U11,U12,U21,U22,U23,activate,length,take
          ,zeros} and constructors {0,cons,n__take,n__zeros,nil,s,tt}
  + Applied Processor:
      NaturalPI {shape = Mixed 3, restrict = NoRestrict, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE