SPECIFICATION Spec CONSTANTS Replicas = {r0, r1, r2} Coordinator = r0 Keys = {k1} MaxWrites = 2 MaxEvicts = 2 NoVal = NoVal INVARIANT TypeOK INVARIANT EpochVerUnique INVARIANT AckedImpliesHeldUnlessDoomed INVARIANT CoordinatorHoldsOwnCommits INVARIANT EpochAgreement PROPERTY NoServedRegression CHECK_DEADLOCK FALSE