Program: 64079
Project: 64079
Buggy source:
private List<String> runInstancesInSubnet(Stack stack,AwsTemplate awsTemplate,DescribeStacksResult stackResult,AmazonEC2Client amazonEC2Client,String instanceArn,String email) throws IOException {
  String subnetId=null;
  String securityGroupId=null;
  List<Output> outputs=stackResult.getStacks().get(0).getOutputs();
  for (  Output output : outputs) {
    if ("String_Node_Str".equals(output.getOutputKey())) {
      subnetId=output.getOutputValue();
    }
 else     if ("String_Node_Str".equals(output.getOutputKey())) {
      securityGroupId=output.getOutputValue();
    }
  }
  RunInstancesRequest runInstancesRequest=new RunInstancesRequest(awsTemplate.getAmiId(),stack.getNodeCount(),stack.getNodeCount());
  runInstancesRequest.setKeyName(awsTemplate.getKeyName());
  runInstancesRequest.setInstanceType(awsTemplate.getInstanceType());
  UserDataBuilder dataBuilder=UserDataBuilder.builder().withCloudPlatform(CloudPlatform.AWS).withEnvironmentVariable("String_Node_Str",email);
  runInstancesRequest.setUserData(awsStackUtil.encode(dataBuilder.build()));
  IamInstanceProfileSpecification iamInstanceProfileSpecification=new IamInstanceProfileSpecification().withArn(instanceArn);
  runInstancesRequest.setIamInstanceProfile(iamInstanceProfileSpecification);
  InstanceNetworkInterfaceSpecification nwIf=new InstanceNetworkInterfaceSpecification().withDeviceIndex(0).withAssociatePublicIpAddress(true).withSubnetId(subnetId).withGroups(securityGroupId);
  runInstancesRequest.setNetworkInterfaces(Arrays.asList(nwIf));
  RunInstancesResult runInstancesResult=amazonEC2Client.runInstances(runInstancesRequest);
  LOGGER.info("String_Node_Str",stack.getId(),subnetId);
  List<String> instanceIds=new ArrayList<>();
  for (  Instance instance : runInstancesResult.getReservation().getInstances()) {
    instanceIds.add(instance.getInstanceId());
  }
  LOGGER.info("String_Node_Str",stack.getId(),instanceIds);
  return instanceIds;
}

Fixed version (ground truth):
private List<String> runInstancesInSubnet(Stack stack,AwsTemplate awsTemplate,DescribeStacksResult stackResult,AmazonEC2Client amazonEC2Client,String instanceArn,String email) throws IOException {
  String subnetId=null;
  String securityGroupId=null;
  List<Output> outputs=stackResult.getStacks().get(0).getOutputs();
  for (  Output output : outputs) {
    if ("String_Node_Str".equals(output.getOutputKey())) {
      subnetId=output.getOutputValue();
    }
 else     if ("String_Node_Str".equals(output.getOutputKey())) {
      securityGroupId=output.getOutputValue();
    }
  }
  RunInstancesRequest runInstancesRequest=new RunInstancesRequest(awsTemplate.getAmiId(),stack.getNodeCount(),stack.getNodeCount());
  runInstancesRequest.setKeyName(awsTemplate.getKeyName());
  runInstancesRequest.setInstanceType(awsTemplate.getInstanceType());
  Map<String,String> map=new HashMap<>();
  map.put("String_Node_Str",email);
  runInstancesRequest.setUserData(awsStackUtil.encode(userDataBuilder.build(CloudPlatform.AWS,map)));
  IamInstanceProfileSpecification iamInstanceProfileSpecification=new IamInstanceProfileSpecification().withArn(instanceArn);
  runInstancesRequest.setIamInstanceProfile(iamInstanceProfileSpecification);
  InstanceNetworkInterfaceSpecification nwIf=new InstanceNetworkInterfaceSpecification().withDeviceIndex(0).withAssociatePublicIpAddress(true).withSubnetId(subnetId).withGroups(securityGroupId);
  runInstancesRequest.setNetworkInterfaces(Arrays.asList(nwIf));
  RunInstancesResult runInstancesResult=amazonEC2Client.runInstances(runInstancesRequest);
  LOGGER.info("String_Node_Str",stack.getId(),subnetId);
  List<String> instanceIds=new ArrayList<>();
  for (  Instance instance : runInstancesResult.getReservation().getInstances()) {
    instanceIds.add(instance.getInstanceId());
  }
  LOGGER.info("String_Node_Str",stack.getId(),instanceIds);
  return instanceIds;
}