free c:channel.

const a:bitstring.
const b:bitstring.

table tbl(bitstring).

free ok:bitstring [private].

query attacker(ok).

set verboseClauses = short.

process
  insert tbl(a);
  get tbl(y) in
  phase 1;
  insert tbl(b);
  get tbl(x) in
  out(c,(x,y))

(* EXPECTPV
RESULT not attacker_p1(ok[]) is true.
0.008s (user 0.004s + system 0.004s), max rss 8000K
END *)
