Ltac address_ordered_auto :=
auto; repeat match goal with
| H: AddressOrdered.eq ?A ?A |- _ => clear H
| H: AddressOrdered.eq ?A ?B |- _ => hnf in H; subst A
| H: ?A <> ?A |- _ => contradiction H; reflexivity
| H: AddressOrdered.lt ?A ?A |- _ =>
apply AddressOrdered.lt_not_eq in H; contradiction H; reflexivity
| H: AddressOrdered.lt ?A ?B, H': AddressOrdered.lt ?B ?A |- _ =>
contradiction (AddressOrdered.lt_not_eq (AddressOrdered.lt_trans H H')); reflexivity
end.

Lemma gsoThreadCLock:
forall {i tp} c (cnti: containsThread tp i),
lockSet (updThreadC cnti c) = lockSet tp.