MAYBE
0.08/0.19	MAYBE
0.08/0.19	
0.08/0.19	Problem:
0.08/0.19	 U11(tt(),N,X,XS) -> U12(splitAt(activate(N),activate(XS)),activate(X))
0.08/0.19	 U12(pair(YS,ZS),X) -> pair(cons(activate(X),YS),ZS)
0.08/0.19	 afterNth(N,XS) -> snd(splitAt(N,XS))
0.08/0.19	 and(tt(),X) -> activate(X)
0.08/0.19	 fst(pair(X,Y)) -> X
0.08/0.19	 head(cons(N,XS)) -> N
0.08/0.19	 natsFrom(N) -> cons(N,n__natsFrom(n__s(N)))
0.08/0.19	 sel(N,XS) -> head(afterNth(N,XS))
0.08/0.19	 snd(pair(X,Y)) -> Y
0.08/0.19	 splitAt(0(),XS) -> pair(nil(),XS)
0.08/0.19	 splitAt(s(N),cons(X,XS)) -> U11(tt(),N,X,activate(XS))
0.08/0.19	 tail(cons(N,XS)) -> activate(XS)
0.08/0.19	 take(N,XS) -> fst(splitAt(N,XS))
0.08/0.19	 natsFrom(X) -> n__natsFrom(X)
0.08/0.19	 s(X) -> n__s(X)
0.08/0.19	 activate(n__natsFrom(X)) -> natsFrom(activate(X))
0.08/0.19	 activate(n__s(X)) -> s(activate(X))
0.08/0.19	 activate(X) -> X
0.08/0.19	
0.08/0.19	Proof:
0.08/0.19	 Open
0.08/0.19	EOF