fun hash/1.

free c.
private free x,n,m.

noninterf x among (n, hash(m)).

process
	out(c, (m, x))

(* EXPECTPV
RESULT Non-interference x among (n[], hash(m[])) cannot be proved.
0.012s (user 0.004s + system 0.008s), max rss 7344K
END *)
