Program: 21146
Project: 21146
Buggy source:
public final boolean doReconnect(){
  retries++;
  ProgressController progress=new ProgressController(this.toString(),10);
  progress.setStatusText(JDLocale.L("String_Node_Str","String_Node_Str") + retries);
  int waittime=JDUtilities.getConfiguration().getIntegerProperty(PARAM_IPCHECKWAITTIME,0);
  int maxretries=JDUtilities.getConfiguration().getIntegerProperty(PARAM_RETRIES,0);
  int waitForIp=JDUtilities.getConfiguration().getIntegerProperty(PARAM_WAITFORIPCHANGE,10);
  logger.info("String_Node_Str" + this.toString() + "String_Node_Str"+ retries);
  String preIp=JDUtilities.getIPAddress(null);
  progress.increase(1);
  progress.setStatusText(JDLocale.L("String_Node_Str","String_Node_Str") + preIp);
  logger.finer("String_Node_Str" + preIp);
  if (!runCommands(progress)) {
    logger.info("String_Node_Str");
    return false;
  }
  logger.finer("String_Node_Str" + waittime + "String_Node_Str");
  try {
    Thread.sleep(waittime * 1000);
  }
 catch (  InterruptedException e) {
  }
  String afterIP=JDUtilities.getIPAddress(null);
  if (!JDUtilities.validateIP(afterIP)) {
    logger.warning("String_Node_Str" + afterIP + "String_Node_Str"+ JDUtilities.getConfiguration().getStringProperty(Configuration.PARAM_GLOBAL_IP_MASK,"String_Node_Str" + "String_Node_Str"));
    JDUtilities.getGUI().displayMiniWarning(String.format(JDLocale.L("String_Node_Str","String_Node_Str"),afterIP),null,20);
    afterIP="String_Node_Str";
  }
  logger.finer("String_Node_Str" + afterIP);
  progress.setStatusText(JDLocale.LF("String_Node_Str","String_Node_Str",afterIP,preIp));
  long endTime=System.currentTimeMillis() + waitForIp * 1000;
  logger.info("String_Node_Str" + waitForIp + "String_Node_Str");
  while (System.currentTimeMillis() <= endTime && (afterIP.equals(preIp) || afterIP.equals("String_Node_Str"))) {
    try {
      Thread.sleep(5 * 1000);
    }
 catch (    InterruptedException e) {
    }
    afterIP=JDUtilities.getIPAddress(null);
    progress.setStatusText(JDLocale.LF("String_Node_Str","String_Node_Str",afterIP,preIp));
    logger.finer("String_Node_Str" + afterIP);
  }
  logger.finer("String_Node_Str" + afterIP);
  if (afterIP.equals("String_Node_Str") && !afterIP.equals(preIp)) {
    logger.warning("String_Node_Str");
    endTime=System.currentTimeMillis() + 120 * 1000;
    while (System.currentTimeMillis() <= endTime && (afterIP.equals(preIp) || afterIP.equals("String_Node_Str"))) {
      try {
        Thread.sleep(20 * 1000);
      }
 catch (      InterruptedException e) {
      }
      afterIP=JDUtilities.getIPAddress(null);
      progress.setStatusText(JDLocale.LF("String_Node_Str","String_Node_Str",preIp,afterIP));
      logger.finer("String_Node_Str" + afterIP);
    }
  }
  if (!afterIP.equals(preIp) && !afterIP.equals("String_Node_Str")) {
    progress.finalize();
    logger.info("String_Node_Str" + afterIP);
    return true;
  }
  if (maxretries == -1 || retries <= maxretries) {
    progress.finalize();
    return doReconnect();
  }
  progress.finalize();
  logger.info("String_Node_Str" + afterIP);
  return false;
}

Fixed version (ground truth):
public final boolean doReconnect(){
  retries++;
  ProgressController progress=new ProgressController(this.toString(),10);
  progress.setStatusText(JDLocale.L("String_Node_Str","String_Node_Str") + retries);
  int waittime=JDUtilities.getConfiguration().getIntegerProperty(PARAM_IPCHECKWAITTIME,0);
  int maxretries=JDUtilities.getConfiguration().getIntegerProperty(PARAM_RETRIES,0);
  int waitForIp=JDUtilities.getConfiguration().getIntegerProperty(PARAM_WAITFORIPCHANGE,10);
  logger.info("String_Node_Str" + this.toString() + "String_Node_Str"+ retries);
  String preIp=JDUtilities.getIPAddress(null);
  progress.increase(1);
  progress.setStatusText(JDLocale.L("String_Node_Str","String_Node_Str") + preIp);
  logger.finer("String_Node_Str" + preIp);
  if (!runCommands(progress)) {
    logger.info("String_Node_Str");
    return false;
  }
  logger.finer("String_Node_Str" + waittime + "String_Node_Str");
  try {
    Thread.sleep(waittime * 1000);
  }
 catch (  InterruptedException e) {
  }
  String afterIP=JDUtilities.getIPAddress(null);
  if (!JDUtilities.validateIP(afterIP)) {
    logger.warning("String_Node_Str" + afterIP + "String_Node_Str"+ JDUtilities.getSubConfig("String_Node_Str").getStringProperty(Configuration.PARAM_GLOBAL_IP_MASK,"String_Node_Str" + "String_Node_Str"));
    JDUtilities.getGUI().displayMiniWarning(String.format(JDLocale.L("String_Node_Str","String_Node_Str"),afterIP),null,20);
    afterIP="String_Node_Str";
  }
  logger.finer("String_Node_Str" + afterIP);
  progress.setStatusText(JDLocale.LF("String_Node_Str","String_Node_Str",afterIP,preIp));
  long endTime=System.currentTimeMillis() + waitForIp * 1000;
  logger.info("String_Node_Str" + waitForIp + "String_Node_Str");
  while (System.currentTimeMillis() <= endTime && (afterIP.equals(preIp) || afterIP.equals("String_Node_Str"))) {
    try {
      Thread.sleep(5 * 1000);
    }
 catch (    InterruptedException e) {
    }
    afterIP=JDUtilities.getIPAddress(null);
    progress.setStatusText(JDLocale.LF("String_Node_Str","String_Node_Str",afterIP,preIp));
    logger.finer("String_Node_Str" + afterIP);
  }
  logger.finer("String_Node_Str" + afterIP);
  if (afterIP.equals("String_Node_Str") && !afterIP.equals(preIp)) {
    logger.warning("String_Node_Str");
    endTime=System.currentTimeMillis() + 120 * 1000;
    while (System.currentTimeMillis() <= endTime && (afterIP.equals(preIp) || afterIP.equals("String_Node_Str"))) {
      try {
        Thread.sleep(20 * 1000);
      }
 catch (      InterruptedException e) {
      }
      afterIP=JDUtilities.getIPAddress(null);
      progress.setStatusText(JDLocale.LF("String_Node_Str","String_Node_Str",preIp,afterIP));
      logger.finer("String_Node_Str" + afterIP);
    }
  }
  if (!afterIP.equals(preIp) && !afterIP.equals("String_Node_Str")) {
    progress.finalize();
    logger.info("String_Node_Str" + afterIP);
    return true;
  }
  if (maxretries == -1 || retries <= maxretries) {
    progress.finalize();
    return doReconnect();
  }
  progress.finalize();
  logger.info("String_Node_Str" + afterIP);
  return false;
}