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List<String> runningVmIds = new ArrayList<String>( );
    for ( VmInfo runVm : request.getVms( ) ) {
      runningVmIds.add( runVm.getInstanceId( ) );
    }
    for ( String vmId : VmInstances.getInstance( ).getKeys( ) ) {
      if ( runningVmIds.contains( vmId ) ) {
        continue;
      }
      VmInstance vm = null;
      try {
        vm = VmInstances.getInstance( ).lookup( vmId );
        long splitTime = vm.getSplitTime( );
        if ( splitTime > SHUT_DOWN_TIME ) {
          VmInstances.getInstance( ).disable( vm.getName( ) );
          vm.resetStopWatch( );
          vm.setState( VmState.TERMINATED );
          vm.setReason( INSTANCE_EXPIRED );
          SystemState.cleanUp( vm );
        }
      } catch ( NoSuchElementException e ) {}
    }
    
    List<String> knownVmIds = new ArrayList<String>( );
    knownVmIds.addAll( VmInstances.getInstance( ).getKeys( ) );
    if ( knownVmIds.removeAll( runningVmIds ) ) {//<-- active registered vms not reported in describe
      for ( String vmId : knownVmIds ) {
        VmInstance vm = null;
        try {
          vm = VmInstances.getInstance( ).lookup( vmId );
          long splitTime = vm.getSplitTime( );
          if ( splitTime > SHUT_DOWN_TIME ) {
            VmInstances.getInstance( ).disable( vm.getName( ) );
            vm.resetStopWatch( );
            vm.setState( VmState.TERMINATED );
            vm.setReason( INSTANCE_EXPIRED );
            SystemState.cleanUp( vm );
          }
        } catch ( NoSuchElementException e ) {
          /* should never happen, just pulled the key set, if it does ignore it */
        }
      }
    }