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(* GNU General Public License for more details.                       *)
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(* 02110-1301 USA                                                     *)
Require Export DistributedReferenceCounting.machine1.invariant5.
Require Export DistributedReferenceCounting.machine1.invariant7.
Unset Standard Proposition Elimination Names.

Lemma safety1 :
forall c : Config,
legal c ->
forall s : Site, s <> owner -> rt c s = true -> (st c owner > 0)%Z.