(* The safety property of the system TCG *)

Lemma lema_Inv10 : ForAll TrGlobal SiniTCG Inv10.
Definition Inv11 (s : StGlobal) :=
match s with
| (_, ((sc, _), (sg, _))) =>
sg = Lowering \/ sg = Closed -> sc = Sc3 \/ sc = Sc4
end.