free a,b: bitstring [private].

channel c.

query attacker(a); attacker(b).


let P(x:bitstring)=
   sync 1;
   out(c,x).

process
    P(a) | P(b)

(* EXPECTPV
RESULT not attacker(a[]) is false.
RESULT not attacker(b[]) is false.
0.004s (user 0.004s + system 0.000s), max rss 7560K
END *)
