Program: 116063
Project: 116063
Buggy source:
public static void handleApplicationInstanceTerminatedEvent(String appId,String instanceId){
  if (log.isDebugEnabled()) {
    log.debug("String_Node_Str" + appId + "String_Node_Str"+ instanceId);
  }
  Applications applications=ApplicationHolder.getApplications();
  if (!applications.applicationExists(appId)) {
    log.warn("String_Node_Str" + appId);
  }
 else {
    Application application=applications.getApplication(appId);
    ApplicationInstance instance=application.getInstanceContexts(instanceId);
    ApplicationStatus status=ApplicationStatus.Terminated;
    if (instance.isStateTransitionValid(status)) {
      instance.setStatus(status);
      updateApplicationMonitor(appId,status,instanceId);
      ApplicationMonitor applicationMonitor=AutoscalerContext.getInstance().getAppMonitor(appId);
      applicationMonitor.getNetworkPartitionContext(instance.getNetworkPartitionId()).removeClusterApplicationContext(instanceId);
      applicationMonitor.removeInstance(instanceId);
      application.removeInstance(instanceId);
      if (application.getInstanceContextCount() == 0) {
        AutoscalerContext.getInstance().removeAppMonitor(appId);
        log.info("String_Node_Str" + appId);
        PrivilegedCarbonContext.startTenantFlow();
        try {
          PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantDomain(MultitenantConstants.SUPER_TENANT_DOMAIN_NAME);
          PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantId(MultitenantConstants.SUPER_TENANT_ID);
          String policyId=PolicyManager.getInstance().getDeploymentPolicyIdByApplication(appId);
          if (policyId != null) {
            try {
              PolicyManager.getInstance().undeployDeploymentPolicy(policyId);
              log.info("String_Node_Str" + appId + "String_Node_Str");
            }
 catch (            InvalidPolicyException e) {
              log.error("String_Node_Str" + appId);
            }
          }
        }
  finally {
          PrivilegedCarbonContext.endTenantFlow();
        }
      }
      ApplicationsEventPublisher.sendApplicationInstanceTerminatedEvent(appId,instanceId);
    }
 else {
      log.warn(String.format("String_Node_Str" + "String_Node_Str",appId,application.getInstanceContexts(instanceId).getStatus(),status));
    }
  }
}

Fixed version (ground truth):
public static void handleApplicationInstanceTerminatedEvent(String appId,String instanceId){
  if (log.isDebugEnabled()) {
    log.debug("String_Node_Str" + appId + "String_Node_Str"+ instanceId);
  }
  Applications applications=ApplicationHolder.getApplications();
  if (!applications.applicationExists(appId)) {
    log.warn("String_Node_Str" + appId);
  }
 else {
    Application application=applications.getApplication(appId);
    ApplicationInstance applicationInstance=application.getInstanceContexts(instanceId);
    ApplicationStatus status=ApplicationStatus.Terminated;
    if (applicationInstance.isStateTransitionValid(status)) {
      applicationInstance.setStatus(status);
      updateApplicationMonitor(appId,status,instanceId);
      ApplicationMonitor applicationMonitor=AutoscalerContext.getInstance().getAppMonitor(appId);
      applicationMonitor.getNetworkPartitionContext(applicationInstance.getNetworkPartitionId()).removeClusterApplicationContext(instanceId);
      applicationMonitor.removeInstance(instanceId);
      application.removeInstance(instanceId);
      if (application.getInstanceContextCount() == 0) {
        AutoscalerContext.getInstance().removeAppMonitor(appId);
        log.info("String_Node_Str" + appId);
        PrivilegedCarbonContext.startTenantFlow();
        try {
          PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantDomain(MultitenantConstants.SUPER_TENANT_DOMAIN_NAME);
          PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantId(MultitenantConstants.SUPER_TENANT_ID);
          String policyId=PolicyManager.getInstance().getDeploymentPolicyIdByApplication(appId);
          if (policyId != null) {
            try {
              PolicyManager.getInstance().undeployDeploymentPolicy(policyId);
              log.info("String_Node_Str" + appId + "String_Node_Str");
            }
 catch (            InvalidPolicyException e) {
              log.error("String_Node_Str" + appId);
            }
          }
        }
  finally {
          PrivilegedCarbonContext.endTenantFlow();
        }
      }
      ApplicationsEventPublisher.sendApplicationInstanceTerminatedEvent(appId,instanceId);
    }
 else {
      log.warn(String.format("String_Node_Str" + "String_Node_Str",appId,application.getInstanceContexts(instanceId).getStatus(),status));
    }
  }
}