Program: 21756
Project: 21756
Buggy source:
@Override public File call() throws Exception {
  int frames=0;
  File outputFile=File.createTempFile("String_Node_Str","String_Node_Str");
  EncoderInterface encoder=JnaLibraryLoader.getEncoder();
  log.info("String_Node_Str" + targetFramerate + "String_Node_Str"+ screenshotSource.getWidth()+ "String_Node_Str"+ screenshotSource.getHeight());
  Pointer context=encoder.create_context(outputFile.getCanonicalPath());
  int result=encoder.init_encoder(context,screenshotSource.getWidth(),screenshotSource.getHeight(),targetFramerate);
  handleVPXError(result,"String_Node_Str",context);
  result=encoder.init_codec(context);
  handleVPXError(result,"String_Node_Str",context);
  result=encoder.init_image(context);
  if (result != 0) {
    throw new IllegalStateException("String_Node_Str");
  }
  log.info("String_Node_Str" + outputFile.getCanonicalPath());
  long excessTime=0;
  long videoStartTime=System.currentTimeMillis();
  while (!shouldStop) {
    int frameDuration=1 + (int)(excessTime / targetFramerateSleepTime);
    excessTime=excessTime % targetFramerateSleepTime;
    long start=System.currentTimeMillis();
    try {
      result=screenshotSource.applyScreenshot(context);
      if (result != 0) {
        throw new IllegalStateException("String_Node_Str");
      }
      result=encoder.encode_next_frame(context,frameDuration);
      handleVPXError(result,"String_Node_Str",context);
    }
 catch (    MissingFrameException e) {
      log.warning("String_Node_Str" + e.getMessage());
    }
    long finish=System.currentTimeMillis();
    frames++;
    long timeTaken=finish - start;
    if (timeTaken < targetFramerateSleepTime) {
      Thread.sleep(targetFramerateSleepTime - timeTaken);
    }
 else {
      excessTime+=timeTaken;
    }
  }
  result=encoder.encode_finish(context);
  handleVPXError(result,"String_Node_Str",context);
  long videoEndTime=System.currentTimeMillis();
  long duration=((videoEndTime - videoStartTime) / 1000);
  if (duration != 0) {
    log.info("String_Node_Str" + frames + "String_Node_Str"+ duration+ "String_Node_Str"+ targetFramerate+ "String_Node_Str"+ frames / duration);
  }
 else {
    log.warning("String_Node_Str");
  }
  return outputFile;
}

Fixed version (ground truth):
@Override public File call() throws Exception {
  int frames=0;
  File outputFile=File.createTempFile("String_Node_Str","String_Node_Str");
  EncoderInterface encoder=JnaLibraryLoader.getEncoder();
  log.info("String_Node_Str" + targetFramerate + "String_Node_Str"+ screenshotSource.getWidth()+ "String_Node_Str"+ screenshotSource.getHeight());
  Pointer context=encoder.create_context(outputFile.getCanonicalPath());
  int result=encoder.init_encoder(context,screenshotSource.getWidth(),screenshotSource.getHeight(),targetFramerate);
  handleVPXError(result,"String_Node_Str",context);
  result=encoder.init_codec(context);
  handleVPXError(result,"String_Node_Str",context);
  result=encoder.init_image(context);
  if (result != 0) {
    throw new IllegalStateException("String_Node_Str");
  }
  log.info("String_Node_Str" + outputFile.getCanonicalPath());
  long excessTime=0;
  long videoStartTime=System.currentTimeMillis();
  while (!shouldStop) {
    int frameDuration=1 + (int)(excessTime / targetFramerateSleepTime);
    excessTime=excessTime % targetFramerateSleepTime;
    long start=System.currentTimeMillis();
    try {
      result=screenshotSource.applyScreenshot(context);
      if (result != 0) {
        throw new IllegalStateException("String_Node_Str");
      }
      result=encoder.encode_next_frame(context,frameDuration);
      handleVPXError(result,"String_Node_Str",context);
    }
 catch (    MissingFrameException e) {
      log.warning("String_Node_Str" + e.getMessage());
    }
    long finish=System.currentTimeMillis();
    frames++;
    long timeTaken=finish - start;
    if (timeTaken < targetFramerateSleepTime) {
      Thread.sleep(targetFramerateSleepTime - timeTaken);
    }
 else {
      excessTime+=timeTaken;
    }
  }
  result=encoder.encode_finish(context);
  handleVPXError(result,"String_Node_Str",context);
  long videoEndTime=System.currentTimeMillis();
  float duration=((videoEndTime - videoStartTime) / 1000f);
  if (duration > 0) {
    log.info(String.format("String_Node_Str",frames,duration,targetFramerate,frames / duration));
  }
 else {
    log.warning("String_Node_Str");
  }
  return outputFile;
}