MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          0() -> n__0()
          U11(tt(),V1,V2) -> U12(isNatKind(activate(V1)),activate(V1),activate(V2))
          U12(tt(),V1,V2) -> U13(isNatKind(activate(V2)),activate(V1),activate(V2))
          U13(tt(),V1,V2) -> U14(isNatKind(activate(V2)),activate(V1),activate(V2))
          U14(tt(),V1,V2) -> U15(isNat(activate(V1)),activate(V2))
          U15(tt(),V2) -> U16(isNat(activate(V2)))
          U16(tt()) -> tt()
          U21(tt(),V1) -> U22(isNatKind(activate(V1)),activate(V1))
          U22(tt(),V1) -> U23(isNat(activate(V1)))
          U23(tt()) -> tt()
          U31(tt(),V2) -> U32(isNatKind(activate(V2)))
          U32(tt()) -> tt()
          U41(tt()) -> tt()
          U51(tt(),N) -> U52(isNatKind(activate(N)),activate(N))
          U52(tt(),N) -> activate(N)
          U61(tt(),M,N) -> U62(isNatKind(activate(M)),activate(M),activate(N))
          U62(tt(),M,N) -> U63(isNat(activate(N)),activate(M),activate(N))
          U63(tt(),M,N) -> U64(isNatKind(activate(N)),activate(M),activate(N))
          U64(tt(),M,N) -> s(plus(activate(N),activate(M)))
          activate(X) -> X
          activate(n__0()) -> 0()
          activate(n__plus(X1,X2)) -> plus(activate(X1),activate(X2))
          activate(n__s(X)) -> s(activate(X))
          isNat(n__0()) -> tt()
          isNat(n__plus(V1,V2)) -> U11(isNatKind(activate(V1)),activate(V1),activate(V2))
          isNat(n__s(V1)) -> U21(isNatKind(activate(V1)),activate(V1))
          isNatKind(n__0()) -> tt()
          isNatKind(n__plus(V1,V2)) -> U31(isNatKind(activate(V1)),activate(V2))
          isNatKind(n__s(V1)) -> U41(isNatKind(activate(V1)))
          plus(N,0()) -> U51(isNat(N),N)
          plus(N,s(M)) -> U61(isNat(M),M,N)
          plus(X1,X2) -> n__plus(X1,X2)
          s(X) -> n__s(X)
      - Signature:
          {0/0,U11/3,U12/3,U13/3,U14/3,U15/2,U16/1,U21/2,U22/2,U23/1,U31/2,U32/1,U41/1,U51/2,U52/2,U61/3,U62/3,U63/3
          ,U64/3,activate/1,isNat/1,isNatKind/1,plus/2,s/1} / {n__0/0,n__plus/2,n__s/1,tt/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {0,U11,U12,U13,U14,U15,U16,U21,U22,U23,U31,U32,U41,U51,U52
          ,U61,U62,U63,U64,activate,isNat,isNatKind,plus,s} and constructors {n__0,n__plus,n__s,tt}
  + Applied Processor:
      NaturalMI {miDimension = 3, miDegree = 3, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE