MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          U11(tt()) -> tt()
          U21(tt(),V2) -> U22(isList(activate(V2)))
          U22(tt()) -> tt()
          U31(tt()) -> tt()
          U41(tt(),V2) -> U42(isNeList(activate(V2)))
          U42(tt()) -> tt()
          U51(tt(),V2) -> U52(isList(activate(V2)))
          U52(tt()) -> tt()
          U61(tt()) -> tt()
          U71(tt(),P) -> U72(isPal(activate(P)))
          U72(tt()) -> tt()
          U81(tt()) -> tt()
          __(X,nil()) -> X
          __(X1,X2) -> n____(X1,X2)
          __(__(X,Y),Z) -> __(X,__(Y,Z))
          __(nil(),X) -> X
          a() -> n__a()
          activate(X) -> X
          activate(n____(X1,X2)) -> __(activate(X1),activate(X2))
          activate(n__a()) -> a()
          activate(n__e()) -> e()
          activate(n__i()) -> i()
          activate(n__nil()) -> nil()
          activate(n__o()) -> o()
          activate(n__u()) -> u()
          e() -> n__e()
          i() -> n__i()
          isList(V) -> U11(isNeList(activate(V)))
          isList(n____(V1,V2)) -> U21(isList(activate(V1)),activate(V2))
          isList(n__nil()) -> tt()
          isNeList(V) -> U31(isQid(activate(V)))
          isNeList(n____(V1,V2)) -> U41(isList(activate(V1)),activate(V2))
          isNeList(n____(V1,V2)) -> U51(isNeList(activate(V1)),activate(V2))
          isNePal(V) -> U61(isQid(activate(V)))
          isNePal(n____(I,n____(P,I))) -> U71(isQid(activate(I)),activate(P))
          isPal(V) -> U81(isNePal(activate(V)))
          isPal(n__nil()) -> tt()
          isQid(n__a()) -> tt()
          isQid(n__e()) -> tt()
          isQid(n__i()) -> tt()
          isQid(n__o()) -> tt()
          isQid(n__u()) -> tt()
          nil() -> n__nil()
          o() -> n__o()
          u() -> n__u()
      - Signature:
          {U11/1,U21/2,U22/1,U31/1,U41/2,U42/1,U51/2,U52/1,U61/1,U71/2,U72/1,U81/1,__/2,a/0,activate/1,e/0,i/0
          ,isList/1,isNeList/1,isNePal/1,isPal/1,isQid/1,nil/0,o/0,u/0} / {n____/2,n__a/0,n__e/0,n__i/0,n__nil/0
          ,n__o/0,n__u/0,tt/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {U11,U21,U22,U31,U41,U42,U51,U52,U61,U71,U72,U81,__,a
          ,activate,e,i,isList,isNeList,isNePal,isPal,isQid,nil,o,u} and constructors {n____,n__a,n__e,n__i,n__nil
          ,n__o,n__u,tt}
  + Applied Processor:
      Ara {heuristics_ = NoHeuristics, minDegree = 1, maxDegree = 3, araTimeout = 60, araFindStrictRules = Nothing, araSmtSolver = MiniSMT}
  + Details:
      The input can not be schown compatible.
MAYBE