Program: 193086
Project: 193086
Buggy source:
private void rolloverStats(final long currentTimeMillis){
  final long startTime=SystemClock.elapsedRealtime();
  Slog.i(TAG,mLogPrefix + "String_Node_Str");
  final Configuration previousConfig=mCurrentStats[UsageStatsManager.INTERVAL_DAILY].activeConfiguration;
  ArraySet<String> continuePreviousDay=new ArraySet<>();
  for (  IntervalStats stat : mCurrentStats) {
    final int pkgCount=stat.packageStats.size();
    for (int i=0; i < pkgCount; i++) {
      UsageStats pkgStats=stat.packageStats.valueAt(i);
      if (pkgStats.mLastEvent == UsageEvents.Event.MOVE_TO_FOREGROUND || pkgStats.mLastEvent == UsageEvents.Event.CONTINUE_PREVIOUS_DAY) {
        continuePreviousDay.add(pkgStats.mPackageName);
        stat.update(pkgStats.mPackageName,mDailyExpiryDate.getTimeInMillis() - 1,UsageEvents.Event.END_OF_DAY);
        notifyStatsChanged();
      }
    }
    stat.updateConfigurationStats(null,mDailyExpiryDate.getTimeInMillis() - 1);
  }
  persistActiveStats();
  mDatabase.prune(currentTimeMillis);
  loadActiveStats(currentTimeMillis,false,false);
  final int continueCount=continuePreviousDay.size();
  for (int i=0; i < continueCount; i++) {
    String name=continuePreviousDay.valueAt(i);
    final long beginTime=mCurrentStats[UsageStatsManager.INTERVAL_DAILY].beginTime;
    for (    IntervalStats stat : mCurrentStats) {
      stat.update(name,beginTime,UsageEvents.Event.CONTINUE_PREVIOUS_DAY);
      stat.updateConfigurationStats(previousConfig,beginTime);
      notifyStatsChanged();
    }
  }
  persistActiveStats();
  final long totalTime=SystemClock.elapsedRealtime() - startTime;
  Slog.i(TAG,mLogPrefix + "String_Node_Str" + totalTime+ "String_Node_Str");
}

Fixed version (ground truth):
private void rolloverStats(final long currentTimeMillis){
  final long startTime=SystemClock.elapsedRealtime();
  Slog.i(TAG,mLogPrefix + "String_Node_Str");
  final Configuration previousConfig=mCurrentStats[UsageStatsManager.INTERVAL_DAILY].activeConfiguration;
  ArraySet<String> continuePreviousDay=new ArraySet<>();
  for (  IntervalStats stat : mCurrentStats) {
    final int pkgCount=stat.packageStats.size();
    for (int i=0; i < pkgCount; i++) {
      UsageStats pkgStats=stat.packageStats.valueAt(i);
      if (pkgStats.mLastEvent == UsageEvents.Event.MOVE_TO_FOREGROUND || pkgStats.mLastEvent == UsageEvents.Event.CONTINUE_PREVIOUS_DAY) {
        continuePreviousDay.add(pkgStats.mPackageName);
        stat.update(pkgStats.mPackageName,mDailyExpiryDate.getTimeInMillis() - 1,UsageEvents.Event.END_OF_DAY);
        notifyStatsChanged();
      }
    }
    stat.updateConfigurationStats(null,mDailyExpiryDate.getTimeInMillis() - 1);
  }
  persistActiveStats();
  mDatabase.prune(currentTimeMillis);
  loadActiveStats(currentTimeMillis,false,false);
  final int continueCount=continuePreviousDay.size();
  for (int i=0; i < continueCount; i++) {
    String name=continuePreviousDay.valueAt(i);
    final long beginTime=mCurrentStats[UsageStatsManager.INTERVAL_DAILY].beginTime;
    for (    IntervalStats stat : mCurrentStats) {
      stat.update(name,beginTime,UsageEvents.Event.CONTINUE_PREVIOUS_DAY);
      stat.updateConfigurationStats(previousConfig,beginTime);
      notifyStatsChanged();
    }
  }
  persistActiveStats();
  refreshAppIdleRollingWindow(currentTimeMillis);
  final long totalTime=SystemClock.elapsedRealtime() - startTime;
  Slog.i(TAG,mLogPrefix + "String_Node_Str" + totalTime+ "String_Node_Str");
}