MAYBE
362.54/91.74	MAYBE
362.54/91.74	
362.54/91.74	Problem:
362.54/91.74	 active(incr(nil())) -> mark(nil())
362.54/91.74	 active(incr(cons(X,L))) -> mark(cons(s(X),incr(L)))
362.54/91.74	 active(adx(nil())) -> mark(nil())
362.54/91.74	 active(adx(cons(X,L))) -> mark(incr(cons(X,adx(L))))
362.54/91.74	 active(nats()) -> mark(adx(zeros()))
362.54/91.74	 active(zeros()) -> mark(cons(0(),zeros()))
362.54/91.74	 active(head(cons(X,L))) -> mark(X)
362.54/91.74	 active(tail(cons(X,L))) -> mark(L)
362.54/91.74	 mark(incr(X)) -> active(incr(mark(X)))
362.54/91.74	 mark(nil()) -> active(nil())
362.54/91.74	 mark(cons(X1,X2)) -> active(cons(mark(X1),X2))
362.54/91.74	 mark(s(X)) -> active(s(mark(X)))
362.54/91.74	 mark(adx(X)) -> active(adx(mark(X)))
362.54/91.74	 mark(nats()) -> active(nats())
362.54/91.74	 mark(zeros()) -> active(zeros())
362.54/91.74	 mark(0()) -> active(0())
362.54/91.74	 mark(head(X)) -> active(head(mark(X)))
362.54/91.74	 mark(tail(X)) -> active(tail(mark(X)))
362.54/91.74	 incr(mark(X)) -> incr(X)
362.54/91.74	 incr(active(X)) -> incr(X)
362.54/91.74	 cons(mark(X1),X2) -> cons(X1,X2)
362.54/91.74	 cons(X1,mark(X2)) -> cons(X1,X2)
362.54/91.74	 cons(active(X1),X2) -> cons(X1,X2)
362.54/91.74	 cons(X1,active(X2)) -> cons(X1,X2)
362.54/91.74	 s(mark(X)) -> s(X)
362.54/91.74	 s(active(X)) -> s(X)
362.54/91.74	 adx(mark(X)) -> adx(X)
362.54/91.74	 adx(active(X)) -> adx(X)
362.54/91.74	 head(mark(X)) -> head(X)
362.54/91.74	 head(active(X)) -> head(X)
362.54/91.74	 tail(mark(X)) -> tail(X)
362.54/91.74	 tail(active(X)) -> tail(X)
362.54/91.74	
362.54/91.74	Proof:
362.54/91.74	 Open
362.54/91.75	EOF