Program: 21227
Project: 21227
Buggy source:
@Override public void onProcess(Executer exec,String latestLine,DynByteBuffer totalBuffer){
  String match=null;
  if (latestLine.length() > 0) {
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      String currentWorkingFile=match.trim();
      currentlyWorkingOn=getArchivFile(currentWorkingFile);
      fireEvent(JDUnrarConstants.WRAPPER_PROGRESS_NEW_SINGLE_FILE_STARTED);
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      archiveParts.add(match.trim());
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      currentVolume=Integer.parseInt(match.trim());
      long ext=totalSize / volumeNum * (currentVolume - 1);
      if (ext == 0) {
        return;
      }
      try {
        speed=ext / ((System.currentTimeMillis() - startTime) / 1000);
      }
 catch (      Exception e) {
      }
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      exactProgress=true;
      currentlyWorkingOn.setPercent(Integer.parseInt(match));
      fireEvent(JDUnrarConstants.WRAPPER_ON_PROGRESS);
      return;
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      currentlyWorkingOn.setPercent(100);
      fireEvent(JDUnrarConstants.WRAPPER_ON_PROGRESS);
      fireEvent(JDUnrarConstants.WRAPPER_PROGRESS_SINGLE_FILE_FINISHED);
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      statusid=JDUnrarConstants.WRAPPER_EXTRACTION_FAILED_CRC;
      String currentWorkingFile=match.trim();
      currentlyWorkingOn=getArchivFile(currentWorkingFile);
      match=new Regex(latestLine,"String_Node_Str").getMatch(0);
      currentVolume=Integer.parseInt(match.trim());
      exec.interrupt();
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      statusid=JDUnrarConstants.WRAPPER_EXTRACTION_FAILED;
      exec.interrupt();
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      statusid=JDUnrarConstants.WRAPPER_EXTRACTION_FAILED_CRC;
      exec.interrupt();
    }
  }
}

Fixed version (ground truth):
@Override public void onProcess(Executer exec,String latestLine,DynByteBuffer totalBuffer){
  String match=null;
  if (latestLine.length() > 0) {
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      String currentWorkingFile=match.trim();
      currentlyWorkingOn=getArchivFile(currentWorkingFile);
      fireEvent(JDUnrarConstants.WRAPPER_PROGRESS_NEW_SINGLE_FILE_STARTED);
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      archiveParts.add(match.trim());
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      currentVolume=Integer.parseInt(match.trim());
      long ext=totalSize / volumeNum * (currentVolume - 1);
      if (ext == 0) {
        return;
      }
      try {
        speed=ext / ((System.currentTimeMillis() - startTime) / 1000);
      }
 catch (      Exception e) {
      }
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      if (currentlyWorkingOn != null) {
        exactProgress=true;
        currentlyWorkingOn.setPercent(Integer.parseInt(match));
        fireEvent(JDUnrarConstants.WRAPPER_ON_PROGRESS);
      }
      return;
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      if (currentlyWorkingOn != null) {
        currentlyWorkingOn.setPercent(100);
        fireEvent(JDUnrarConstants.WRAPPER_ON_PROGRESS);
        fireEvent(JDUnrarConstants.WRAPPER_PROGRESS_SINGLE_FILE_FINISHED);
      }
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      statusid=JDUnrarConstants.WRAPPER_EXTRACTION_FAILED_CRC;
      String currentWorkingFile=match.trim();
      currentlyWorkingOn=getArchivFile(currentWorkingFile);
      match=new Regex(latestLine,"String_Node_Str").getMatch(0);
      currentVolume=Integer.parseInt(match.trim());
      exec.interrupt();
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      statusid=JDUnrarConstants.WRAPPER_EXTRACTION_FAILED;
      exec.interrupt();
    }
    if ((match=new Regex(latestLine,"String_Node_Str").getMatch(0)) != null) {
      statusid=JDUnrarConstants.WRAPPER_EXTRACTION_FAILED_CRC;
      exec.interrupt();
    }
  }
}