(* BUG: ProVerif thinks non-interference is true, because the
   clauses to test whether a term is a tuple are omitted. *)

private free a.
private free a1, a2.
private free b.
free c.

noninterf a among ((a1,a2), b).

process out(c, a)

(* EXPECTPV
RESULT Non-interference a among ((a1[],a2[]), b[]) cannot be proved.
0.008s (user 0.008s + system 0.000s), max rss 7204K
END *)
