NO
0.07/0.18	NO
0.07/0.18	
0.07/0.18	Problem:
0.07/0.18	 tail(cons(X)) -> Y
0.07/0.18	 if(true()) -> X
0.07/0.18	 if(false()) -> Y
0.07/0.18	 primes() -> sieve(from(s(s(0()))))
0.07/0.18	 from(X) -> cons(X)
0.07/0.18	 head(cons(X)) -> X
0.07/0.18	 filter(s(s(X)),cons(Y)) -> if(divides(s(s(X)),Y))
0.07/0.18	 sieve(cons(X)) -> cons(X)
0.07/0.18	
0.07/0.18	Proof:
0.07/0.18	 Fresh Variable Processor:
0.07/0.18	  loop length: 1
0.07/0.18	  terms:
0.07/0.18	   tail(cons(X))
0.07/0.18	  context: []
0.07/0.18	  substitution:
0.07/0.18	   Y -> tail(cons(X))
0.07/0.18	  Qed
0.07/0.18	EOF