Program: 21398
Project: 21398
Buggy source:
private String execprozess(File file,String password){
  try {
    Vector<String> params=new Vector<String>();
    if (password != "String_Node_Str") {
      params.add("String_Node_Str" + password);
    }
 else {
      params.add("String_Node_Str");
    }
    if (overwriteFiles) {
      params.add("String_Node_Str");
    }
 else {
      params.add("String_Node_Str");
    }
    params.add("String_Node_Str");
    params.add("String_Node_Str");
    params.add(file.getName());
    Process p=createProcess(unrar,params.toArray(new String[]{}),file.getParentFile());
    String str=startInputListener(p,file.getParentFile());
    if (str.matches(allOk)) {
      Pattern pattern=Pattern.compile("String_Node_Str");
      Matcher matcher=pattern.matcher(str);
      if (autoDelete) {
        while (matcher.find()) {
          File delfile=new File(file.getParentFile(),matcher.group(1));
          if (!delfile.isFile() || !delfile.delete())           logger.warning("String_Node_Str" + delfile.getName());
        }
      }
 else {
        while (matcher.find()) {
          File ufile=new File(file.getParentFile(),matcher.group(1));
          unpackedlist.put(ufile,Plugin.md5sum(ufile));
        }
        saveUnpackedList();
      }
      pattern=Pattern.compile("String_Node_Str");
      matcher=pattern.matcher(str);
      Vector<File> nfiles=new Vector<File>();
      while (matcher.find()) {
        nfiles.add(new File(file.getParent() + System.getProperty("String_Node_Str") + matcher.group(1)));
      }
      JUnrar un=new JUnrar(nfiles.toArray(new File[nfiles.size()]));
      un.maxFilesize=maxFilesize;
      un.standardPassword=standardPassword;
      un.autoDelete=autoDelete;
      un.unrar=unrar;
      un.overwriteFiles=overwriteFiles;
      ret.addAll(un.unrar());
    }
    return str;
  }
 catch (  Exception e) {
    e.printStackTrace();
  }
  return null;
}

Fixed version (ground truth):
private String execprozess(File file,String password){
  try {
    Vector<String> params=new Vector<String>();
    if (password != "String_Node_Str") {
      params.add("String_Node_Str" + password);
    }
 else {
      params.add("String_Node_Str");
    }
    if (overwriteFiles) {
      params.add("String_Node_Str");
    }
 else {
      params.add("String_Node_Str");
    }
    params.add("String_Node_Str");
    params.add("String_Node_Str");
    params.add(file.getName());
    Process p=createProcess(unrar,params.toArray(new String[]{}),file.getParentFile());
    String str=startInputListener(p,file.getParentFile());
    if (str.matches(allOk)) {
      Pattern pattern=Pattern.compile("String_Node_Str");
      Matcher matcher=pattern.matcher(str);
      if (autoDelete) {
        while (matcher.find()) {
          File delfile=new File(file.getParentFile(),matcher.group(1));
          if (!delfile.isFile() || !delfile.delete())           logger.warning("String_Node_Str" + delfile.getName());
        }
      }
 else {
        while (matcher.find()) {
          File ufile=new File(file.getParentFile(),matcher.group(1));
          unpackedlist.add(ufile);
        }
        saveUnpackedList();
      }
      pattern=Pattern.compile("String_Node_Str");
      matcher=pattern.matcher(str);
      Vector<File> nfiles=new Vector<File>();
      while (matcher.find()) {
        nfiles.add(new File(file.getParent() + System.getProperty("String_Node_Str") + matcher.group(1)));
      }
      JUnrar un=new JUnrar(nfiles.toArray(new File[nfiles.size()]));
      un.maxFilesize=maxFilesize;
      un.standardPassword=standardPassword;
      un.autoDelete=autoDelete;
      un.unrar=unrar;
      un.overwriteFiles=overwriteFiles;
      ret.addAll(un.unrar());
    }
    return str;
  }
 catch (  Exception e) {
    e.printStackTrace();
  }
  return null;
}