Program: 115665
Project: 115665
Buggy source:
private static void updateApplicationMonitor(String appId,ApplicationStatus status,String networkPartitionId,String instanceId){
  ApplicationMonitor applicationMonitor=AutoscalerContext.getInstance().getAppMonitor(appId);
  if (applicationMonitor != null) {
    GroupLevelNetworkPartitionContext context=(GroupLevelNetworkPartitionContext)applicationMonitor.getNetworkPartitionContext(networkPartitionId);
    if (status == ApplicationStatus.Active) {
      if (log.isDebugEnabled()) {
        log.debug("String_Node_Str" + instanceId + "String_Node_Str"+ appId);
      }
      context.movePendingInstanceToActiveInstances(instanceId);
    }
 else     if (status == ApplicationStatus.Terminating) {
      if (context.getActiveInstance(instanceId) != null) {
        if (log.isDebugEnabled()) {
          log.debug("String_Node_Str" + instanceId + "String_Node_Str"+ "String_Node_Str"+ appId);
        }
        context.moveActiveInstanceToTerminationPendingInstances(instanceId);
      }
 else       if (context.getPendingInstance(instanceId) != null) {
        if (log.isDebugEnabled()) {
          log.debug("String_Node_Str" + instanceId + "String_Node_Str"+ appId);
        }
        context.movePendingInstanceToTerminationPendingInstances(instanceId);
      }
    }
 else     if (status == ApplicationStatus.Terminated) {
      if (log.isDebugEnabled()) {
        log.debug("String_Node_Str" + instanceId + "String_Node_Str"+ appId);
      }
      context.removeTerminationPendingInstance(instanceId);
    }
    applicationMonitor.setStatus(status,instanceId);
  }
 else {
    log.warn("String_Node_Str" + appId);
  }
}

Fixed version (ground truth):
private static void updateApplicationMonitor(String appId,ApplicationStatus status,String networkPartitionId,String instanceId){
  ApplicationMonitor applicationMonitor=AutoscalerContext.getInstance().getAppMonitor(appId);
  if (applicationMonitor != null) {
    ApplicationLevelNetworkPartitionContext context=(ApplicationLevelNetworkPartitionContext)applicationMonitor.getNetworkPartitionContext(networkPartitionId);
    if (status == ApplicationStatus.Active) {
      if (log.isDebugEnabled()) {
        log.debug("String_Node_Str" + instanceId + "String_Node_Str"+ appId);
      }
      context.movePendingInstanceToActiveInstances(instanceId);
    }
 else     if (status == ApplicationStatus.Terminating) {
      if (context.getActiveInstance(instanceId) != null) {
        if (log.isDebugEnabled()) {
          log.debug("String_Node_Str" + instanceId + "String_Node_Str"+ "String_Node_Str"+ appId);
        }
        context.moveActiveInstanceToTerminationPendingInstances(instanceId);
      }
 else       if (context.getPendingInstance(instanceId) != null) {
        if (log.isDebugEnabled()) {
          log.debug("String_Node_Str" + instanceId + "String_Node_Str"+ appId);
        }
        context.movePendingInstanceToTerminationPendingInstances(instanceId);
      }
    }
 else     if (status == ApplicationStatus.Terminated) {
      if (log.isDebugEnabled()) {
        log.debug("String_Node_Str" + instanceId + "String_Node_Str"+ appId);
      }
      context.removeTerminationPendingInstance(instanceId);
    }
    applicationMonitor.setStatus(status,instanceId);
  }
 else {
    log.warn("String_Node_Str" + appId);
  }
}