CONSTANTS
  Keys = {k1, k2}
  Values = {v1, v2}
  MaxTxnId = 2
  MaxWalLen = 6
  MaxSteps = 5
  Nil = Nil

INIT Init
NEXT Next

CHECK_DEADLOCK FALSE

INVARIANTS
  TypeOk
  RedoCommitted
  RecoveryCompleteness
  WalIntegrity