Program: 10702
Project: 10702
Buggy source:
@SuppressWarnings("String_Node_Str") public void initWebRtc(final WebRtcEndpoint webRtcEndpoint,final WebRtcChannel channel,final WebRtcMode mode) throws InterruptedException {
  webRtcEndpoint.addOnIceCandidateListener(new EventListener<OnIceCandidateEvent>(){
    @Override public void onEvent(    OnIceCandidateEvent event){
      browser.executeScript("String_Node_Str" + JsonUtils.toJsonObject(event.getCandidate()) + "String_Node_Str");
    }
  }
);
  final List<Boolean> searchCandidates=new ArrayList<Boolean>();
  searchCandidates.add(true);
  Thread t1=new Thread(){
    public void run(){
      JsonParser parser=new JsonParser();
      int numCandidate=0;
      while (!searchCandidates.isEmpty()) {
        ArrayList<Object> iceCandidates=(ArrayList<Object>)browser.executeScriptAndWaitOutput("String_Node_Str");
        for (int i=numCandidate; i < iceCandidates.size(); i++) {
          JsonObject jsonCandidate=(JsonObject)parser.parse(iceCandidates.get(i).toString());
          IceCandidate candidate=new IceCandidate(jsonCandidate.get("String_Node_Str").getAsString(),jsonCandidate.get("String_Node_Str").getAsString(),jsonCandidate.get("String_Node_Str").getAsInt());
          log.debug("String_Node_Str",i,jsonCandidate);
          webRtcEndpoint.addIceCandidate(candidate);
          numCandidate++;
        }
        try {
          Thread.sleep(300);
        }
 catch (        InterruptedException e) {
        }
      }
    }
  }
;
  t1.start();
  addTestName(KurentoServicesTestHelper.getTestCaseName() + "String_Node_Str" + KurentoServicesTestHelper.getTestName());
  appendStringToTitle(mode.toString());
  appendStringToTitle(channel.toString());
  String audio=browser.getAudio();
  if (audio != null) {
    browser.executeScript("String_Node_Str" + audio + "String_Node_Str");
  }
  String channelJsFunction=channel.getJsFunction();
  if (channelJsFunction != null) {
    browser.executeScript(channelJsFunction);
  }
  browser.executeScript(mode.getJsFunction());
  final CountDownLatch latch=new CountDownLatch(1);
  Thread t2=new Thread(){
    public void run(){
      String sdpOffer=(String)browser.executeScriptAndWaitOutput("String_Node_Str");
      String sdpAnswer=webRtcEndpoint.processOffer(sdpOffer);
      log.trace("String_Node_Str",sdpOffer);
      log.trace("String_Node_Str",sdpAnswer);
      sdpAnswer=new String(Base64.encodeBase64(sdpAnswer.getBytes()));
      browser.executeScript("String_Node_Str" + sdpAnswer + "String_Node_Str");
      latch.countDown();
    }
  }
;
  t2.start();
  if (!latch.await(browser.getTimeout(),TimeUnit.SECONDS)) {
    throw new KurentoException("String_Node_Str" + browser.getTimeout() + "String_Node_Str");
  }
  searchCandidates.clear();
  t1.interrupt();
  t2.interrupt();
  webRtcEndpoint.gatherCandidates();
}

Fixed version (ground truth):
@SuppressWarnings({"String_Node_Str","String_Node_Str"}) public void initWebRtc(final WebRtcEndpoint webRtcEndpoint,final WebRtcChannel channel,final WebRtcMode mode) throws InterruptedException {
  webRtcEndpoint.addOnIceCandidateListener(new EventListener<OnIceCandidateEvent>(){
    @Override public void onEvent(    OnIceCandidateEvent event){
      browser.executeScript("String_Node_Str" + JsonUtils.toJsonObject(event.getCandidate()) + "String_Node_Str");
    }
  }
);
  Thread t1=new Thread(){
    public void run(){
      JsonParser parser=new JsonParser();
      int numCandidate=0;
      while (true) {
        try {
          ArrayList<Object> iceCandidates=(ArrayList<Object>)browser.executeScript("String_Node_Str");
          for (int i=numCandidate; i < iceCandidates.size(); i++) {
            JsonObject jsonCandidate=(JsonObject)parser.parse(iceCandidates.get(i).toString());
            IceCandidate candidate=new IceCandidate(jsonCandidate.get("String_Node_Str").getAsString(),jsonCandidate.get("String_Node_Str").getAsString(),jsonCandidate.get("String_Node_Str").getAsInt());
            log.debug("String_Node_Str",i,jsonCandidate);
            webRtcEndpoint.addIceCandidate(candidate);
            numCandidate++;
          }
          Thread.sleep(300);
        }
 catch (        Throwable e) {
          log.debug("String_Node_Str");
          break;
        }
      }
    }
  }
;
  t1.start();
  addTestName(KurentoServicesTestHelper.getTestCaseName() + "String_Node_Str" + KurentoServicesTestHelper.getTestName());
  appendStringToTitle(mode.toString());
  appendStringToTitle(channel.toString());
  String audio=browser.getAudio();
  if (audio != null) {
    browser.executeScript("String_Node_Str" + audio + "String_Node_Str");
  }
  String channelJsFunction=channel.getJsFunction();
  if (channelJsFunction != null) {
    browser.executeScript(channelJsFunction);
  }
  browser.executeScript(mode.getJsFunction());
  final CountDownLatch latch=new CountDownLatch(1);
  Thread t2=new Thread(){
    public void run(){
      String sdpOffer=(String)browser.executeScriptAndWaitOutput("String_Node_Str");
      String sdpAnswer=webRtcEndpoint.processOffer(sdpOffer);
      log.trace("String_Node_Str",sdpOffer);
      log.trace("String_Node_Str",sdpAnswer);
      sdpAnswer=new String(Base64.encodeBase64(sdpAnswer.getBytes()));
      browser.executeScript("String_Node_Str" + sdpAnswer + "String_Node_Str");
      latch.countDown();
    }
  }
;
  t2.start();
  if (!latch.await(browser.getTimeout(),TimeUnit.SECONDS)) {
    t1.interrupt();
    t1.stop();
    t2.interrupt();
    t2.stop();
    throw new KurentoException("String_Node_Str" + browser.getTimeout() + "String_Node_Str");
  }
  webRtcEndpoint.gatherCandidates();
}