NO
0.08/0.19	NO
0.08/0.19	
0.08/0.19	Problem:
0.08/0.19	 U52(tt()) -> N
0.08/0.19	 U64(tt()) -> s(plus(N,M))
0.08/0.19	 U11(tt()) -> U12(isNatKind())
0.08/0.19	 U12(tt()) -> U13(isNatKind())
0.08/0.19	 U13(tt()) -> U14(isNatKind())
0.08/0.19	 U14(tt()) -> U15(isNat())
0.08/0.19	 U15(tt()) -> U16(isNat())
0.08/0.19	 U16(tt()) -> tt()
0.08/0.19	 U21(tt()) -> U22(isNatKind())
0.08/0.19	 U22(tt()) -> U23(isNat())
0.08/0.19	 U23(tt()) -> tt()
0.08/0.19	 U31(tt()) -> U32(isNatKind())
0.08/0.19	 U32(tt()) -> tt()
0.08/0.19	 U41(tt()) -> tt()
0.08/0.19	 U51(tt()) -> U52(isNatKind())
0.08/0.19	 U61(tt()) -> U62(isNatKind())
0.08/0.19	 U62(tt()) -> U63(isNat())
0.08/0.19	 U63(tt()) -> U64(isNatKind())
0.08/0.19	 isNat() -> tt()
0.08/0.19	 isNat() -> U11(isNatKind())
0.08/0.19	 isNat() -> U21(isNatKind())
0.08/0.19	 isNatKind() -> tt()
0.08/0.19	 isNatKind() -> U31(isNatKind())
0.08/0.19	 isNatKind() -> U41(isNatKind())
0.08/0.19	 plus(N,0()) -> U51(isNat())
0.08/0.19	 plus(N,s(M)) -> U61(isNat())
0.08/0.19	
0.08/0.19	Proof:
0.08/0.19	 Fresh Variable Processor: loop length: 1
0.08/0.19	                           terms:
0.08/0.19	                            U52(tt())
0.08/0.19	                           context: []
0.08/0.19	                           substitution:
0.08/0.19	                            N -> U52(tt())
0.08/0.19	  Qed
0.08/0.19	EOF