Section REC_COP2_EFFECT.
(* invariants *)
Variable c0 : Config.
Variable s2 : Site.
Hypothesis rt_true : rt c0 s2 = false.

Lemma rcop2_trans_in_queue :
forall s0 s3 s4 : Site,
In_queue Message (inc_dec s0) (bm (rec_copy2_trans c0 s2) s3 s4) ->
In_queue Message (inc_dec s0) (bm c0 s3 s4).