(* as formulated by Jean *)

(* Specifications: *)
Lemma not_owner_inc2 :
forall (c : Config) (s0 s1 s2 : Site),
legal c -> In_queue Message (inc_dec s0) (bm c s1 s2) -> s0 <> owner.
Lemma not_owner_inc2 :
forall (c : Config) (s0 s1 s2 : Site),
legal c -> In_queue Message (inc_dec s0) (bm c s1 s2) -> s0 <> owner.
Lemma not_owner_inc2 :
forall (c : Config) (s0 s1 s2 : Site),
legal c -> In_queue Message (inc_dec s0) (bm c s1 s2) -> s0 <> owner.
Lemma not_owner_inc2 :
forall (c : Config) (s0 s1 s2 : Site),
legal c -> In_queue Message (inc_dec s0) (bm c s1 s2) -> s0 <> owner.