Program: 10552
Project: 10552
Buggy source:
private InputStream post(String payload){
  CloseableHttpClient httpclient;
  RequestConfig requestConfig=RequestConfig.custom().setConnectTimeout(this.connectTimeout).setSocketTimeout(this.readTimeout).build();
  if (trustAllSSL) {
    httpclient=HttpClients.custom().setSSLSocketFactory(ApacheTrustSelfSigned.trust()).build();
  }
 else {
    httpclient=HttpClients.createDefault();
  }
  HttpPost httpPost;
  StringEntity stringEntity;
  try {
    stringEntity=new StringEntity(payload);
    log.trace("String_Node_Str");
  }
 catch (  UnsupportedEncodingException e) {
    log.error("String_Node_Str" + payload,e);
    return null;
  }
  try {
    httpPost=new HttpPost(this.baseUrl.toURI());
  }
 catch (  URISyntaxException e) {
    log.error("String_Node_Str" + this.baseUrl.toString(),e);
    return null;
  }
  httpPost.setConfig(requestConfig);
  httpPost.setHeader(SoapAction.SOAP_ACTION_HEADER.toString(),soapAction);
  httpPost.setHeader("String_Node_Str","String_Node_Str");
  if (cookie != null) {
    log.trace("String_Node_Str");
    httpPost.setHeader("String_Node_Str",cookie);
  }
  httpPost.setEntity(stringEntity);
  try {
    CloseableHttpResponse response=httpclient.execute(httpPost);
    InputStream inputStream=response.getEntity().getContent();
    if (cookie == null) {
      Header cookieHeader=(Header)response.headerIterator("String_Node_Str");
      cookie=cookieHeader.getValue();
    }
    return inputStream;
  }
 catch (  IOException e) {
    log.error("String_Node_Str",e);
  }
  return null;
}

Fixed version (ground truth):
private InputStream post(String payload){
  CloseableHttpClient httpclient;
  RequestConfig requestConfig=RequestConfig.custom().setConnectTimeout(this.connectTimeout).setSocketTimeout(this.readTimeout).build();
  if (trustAllSSL) {
    httpclient=HttpClients.custom().setSSLSocketFactory(ApacheTrustSelfSigned.trust()).build();
  }
 else {
    httpclient=HttpClients.createDefault();
  }
  HttpPost httpPost;
  StringEntity stringEntity;
  try {
    stringEntity=new StringEntity(payload);
    log.trace("String_Node_Str");
  }
 catch (  UnsupportedEncodingException e) {
    log.error("String_Node_Str" + payload,e);
    return null;
  }
  try {
    httpPost=new HttpPost(this.baseUrl.toURI());
  }
 catch (  URISyntaxException e) {
    log.error("String_Node_Str" + this.baseUrl.toString(),e);
    return null;
  }
  httpPost.setConfig(requestConfig);
  httpPost.setHeader(SoapAction.SOAP_ACTION_HEADER.toString(),soapAction);
  httpPost.setHeader("String_Node_Str","String_Node_Str");
  if (cookie != null) {
    log.trace("String_Node_Str");
    httpPost.setHeader("String_Node_Str",cookie);
  }
  httpPost.setEntity(stringEntity);
  try {
    CloseableHttpResponse response=httpclient.execute(httpPost);
    InputStream inputStream=response.getEntity().getContent();
    if (cookie == null) {
      Header[] headers=response.getAllHeaders();
      for (      Header header : headers) {
        if (header.getName().equals("String_Node_Str")) {
          cookie=header.getValue();
          break;
        }
      }
    }
    return inputStream;
  }
 catch (  IOException e) {
    log.error("String_Node_Str",e);
  }
  return null;
}