Program: 21225
Project: 21225
Buggy source:
private void crackPassword(){
  ArchivFile file=null;
  this.crackProgress=0;
  fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
  for (  ArchivFile f : files) {
    if (f.isProtected()) {
      if (file == null) {
        file=f;
        continue;
      }
 else       if (f.getSize() < file.getSize()) {
        file=f;
      }
    }
  }
  File fileFile=new File(this.file.getParentFile(),System.currentTimeMillis() + "String_Node_Str");
  JDUtilities.writeLocalFile(fileFile,file.getFilepath());
  fileFile.deleteOnExit();
  if (file.getSize() < 2097152) {
    int c=0;
    for (    String pass : this.passwordList) {
      crackProgress=((c++) * 100) / passwordList.length;
      fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
      pass=escapePassword(pass);
      Executer exec=new Executer(unrarCommand);
      exec.setDebug(DEBUG);
      exec.addParameter("String_Node_Str");
      exec.addParameter("String_Node_Str" + fileFile.getName());
      exec.addParameter("String_Node_Str");
      exec.addParameter(this.file.getName());
      exec.setRunin(this.file.getParentFile().getAbsolutePath());
      exec.setWaitTimeout(-1);
      exec.addProcessListener(new PasswordListener(pass),Executer.LISTENER_ERRORSTREAM);
      exec.start();
      exec.waitTimeout();
      String res=exec.getOutputStream() + "String_Node_Str" + exec.getErrorStream();
      if (res.indexOf("String_Node_Str") != -1 || res.contains("String_Node_Str")) {
        continue;
      }
 else       if (res.matches("String_Node_Str")) {
        this.password=pass;
        crackProgress=100;
        fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
        return;
      }
 else {
        continue;
      }
    }
  }
 else {
    int c=0;
    for (    String pass : this.passwordList) {
      crackProgress=((c++) * 100) / passwordList.length;
      fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
      Executer exec=new Executer(unrarCommand);
      exec.setDebug(DEBUG);
      exec.addParameter("String_Node_Str");
      exec.addParameter("String_Node_Str" + fileFile.getName());
      exec.addParameter("String_Node_Str");
      exec.addParameter("String_Node_Str");
      exec.addParameter(this.file.getName());
      exec.setRunin(this.file.getParentFile().getAbsolutePath());
      exec.setWaitTimeout(-1);
      exec.addProcessListener(new PasswordListener(pass),Executer.LISTENER_ERRORSTREAM);
      exec.addProcessListener(new ProcessListener(){
        @Override public void onBufferChanged(        Executer exec,        DynByteBuffer buffer,        int latestNum){
          if (buffer.position() >= 50) {
            exec.interrupt();
            System.out.println("String_Node_Str");
          }
        }
        @Override public void onProcess(        Executer exec,        String latestLine,        DynByteBuffer sb){
        }
      }
,Executer.LISTENER_STDSTREAM);
      exec.start();
      exec.waitTimeout();
      String res=exec.getErrorStream();
      if (new Regex(res,"String_Node_Str").matches() || res.contains("String_Node_Str")) {
        continue;
      }
      String sig="String_Node_Str";
      DynByteBuffer buff=exec.getInputStreamBuffer();
      buff.flip();
      for (int i=0; i < buff.limit(); i++) {
        byte f=buff.get();
        String s=Integer.toHexString((int)f);
        s=(s.length() < 2 ? "String_Node_Str" + s : s);
        s=s.substring(s.length() - 2);
        sig+=s;
      }
      JDUtilities.getLogger().finest(exec.getInputStreamBuffer() + "String_Node_Str" + sig);
      if (sig.trim().length() < 8)       continue;
      Signature signature=FileSignatures.getSignature(sig);
      if (signature != null) {
        if (signature.getExtension().matcher(file.getFilepath()).matches()) {
          this.password=pass;
          crackProgress=100;
          fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
          return;
        }
 else {
          if (!signature.getDesc().equals("String_Node_Str")) {
            this.password=pass;
          }
 else {
            if (password == null)             password=pass;
          }
        }
      }
    }
  }
  crackProgress=100;
  fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
}

Fixed version (ground truth):
private void crackPassword(){
  ArchivFile file=null;
  this.crackProgress=0;
  fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
  for (  ArchivFile f : files) {
    if (f.isProtected()) {
      if (file == null) {
        file=f;
        continue;
      }
 else       if (f.getSize() < file.getSize()) {
        file=f;
      }
    }
  }
  File fileFile=new File(this.file.getParentFile(),System.currentTimeMillis() + "String_Node_Str");
  JDUtilities.writeLocalFile(fileFile,file.getFilepath());
  fileFile.deleteOnExit();
  if (file.getSize() < 2097152) {
    int c=0;
    for (    String pass : this.passwordList) {
      crackProgress=((c++) * 100) / passwordList.length;
      fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
      pass=escapePassword(pass);
      Executer exec=new Executer(unrarCommand);
      exec.setCodepage(JDUnrar.CODEPAGE);
      exec.setDebug(DEBUG);
      exec.addParameter("String_Node_Str");
      exec.addParameter("String_Node_Str" + fileFile.getName());
      exec.addParameter("String_Node_Str");
      exec.addParameter(this.file.getName());
      exec.setRunin(this.file.getParentFile().getAbsolutePath());
      exec.setWaitTimeout(-1);
      exec.addProcessListener(new PasswordListener(pass),Executer.LISTENER_ERRORSTREAM);
      exec.start();
      exec.waitTimeout();
      String res=exec.getOutputStream() + "String_Node_Str" + exec.getErrorStream();
      if (res.indexOf("String_Node_Str") != -1 || res.contains("String_Node_Str")) {
        continue;
      }
 else       if (res.matches("String_Node_Str")) {
        this.password=pass;
        crackProgress=100;
        fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
        return;
      }
 else {
        continue;
      }
    }
  }
 else {
    int c=0;
    for (    String pass : this.passwordList) {
      crackProgress=((c++) * 100) / passwordList.length;
      fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
      Executer exec=new Executer(unrarCommand);
      exec.setCodepage(JDUnrar.CODEPAGE);
      exec.setDebug(DEBUG);
      exec.addParameter("String_Node_Str");
      exec.addParameter("String_Node_Str" + fileFile.getName());
      exec.addParameter("String_Node_Str");
      exec.addParameter("String_Node_Str");
      exec.addParameter(this.file.getName());
      exec.setRunin(this.file.getParentFile().getAbsolutePath());
      exec.setWaitTimeout(-1);
      exec.addProcessListener(new PasswordListener(pass),Executer.LISTENER_ERRORSTREAM);
      exec.addProcessListener(new ProcessListener(){
        @Override public void onBufferChanged(        Executer exec,        DynByteBuffer buffer,        int latestNum){
          if (buffer.position() >= 50) {
            exec.interrupt();
            System.out.println("String_Node_Str");
          }
        }
        @Override public void onProcess(        Executer exec,        String latestLine,        DynByteBuffer sb){
        }
      }
,Executer.LISTENER_STDSTREAM);
      exec.start();
      exec.waitTimeout();
      String res=exec.getErrorStream();
      if (new Regex(res,"String_Node_Str").matches() || res.contains("String_Node_Str")) {
        continue;
      }
      String sig="String_Node_Str";
      DynByteBuffer buff=exec.getInputStreamBuffer();
      buff.flip();
      for (int i=0; i < buff.limit(); i++) {
        byte f=buff.get();
        String s=Integer.toHexString((int)f);
        s=(s.length() < 2 ? "String_Node_Str" + s : s);
        s=s.substring(s.length() - 2);
        sig+=s;
      }
      JDUtilities.getLogger().finest(exec.getInputStreamBuffer() + "String_Node_Str" + sig);
      if (sig.trim().length() < 8)       continue;
      Signature signature=FileSignatures.getSignature(sig);
      if (signature != null) {
        if (signature.getExtension().matcher(file.getFilepath()).matches()) {
          this.password=pass;
          crackProgress=100;
          fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
          return;
        }
 else {
          if (!signature.getDesc().equals("String_Node_Str")) {
            this.password=pass;
          }
 else {
            if (password == null)             password=pass;
          }
        }
      }
    }
  }
  crackProgress=100;
  fireEvent(JDUnrarConstants.WRAPPER_PASSWORT_CRACKING);
}