const g0:bitstring.
const gc:bitstring.
const c0:bitstring.
const c1:bitstring.

equation g0=gc.
reduc ung(g0) = c0;
      ung(gc) = c1.

free c:channel.
free a:bitstring.
free b:bitstring.

process 0

(* EXPECTPV
Error: The destructor ung is not deterministic.
Error: The destructors should be deterministic.
xtime: error in child process (status : 2)
END *)
