Program: 21765
Project: 21765
Buggy source:
@Override public File call() throws Exception {
  int frames=0;
  Rectangle screenSize=getScreenSize();
  File outputFile=File.createTempFile("String_Node_Str","String_Node_Str");
  JnaLibraryLoader.init();
  EncoderInterface encoder=JnaLibraryLoader.getEncoder();
  Pointer context=encoder.create_context(outputFile.getCanonicalPath());
  int result=encoder.init_encoder(context,(int)screenSize.getWidth(),(int)screenSize.getHeight(),targetFramerate);
  encoder.init_codec(context);
  encoder.init_image(context);
  log.info("String_Node_Str" + outputFile.getCanonicalPath());
  Robot robot=new Robot();
  long excessTime=0;
  long videoStartTime=System.currentTimeMillis();
  while (!shouldStop) {
    int frameDuration=1 + (int)(excessTime / targetFramerateSleepTime);
    excessTime=excessTime % targetFramerateSleepTime;
    long start=System.currentTimeMillis();
    BufferedImage image=robot.createScreenCapture(screenSize);
    int[] data=((DataBufferInt)image.getRaster().getDataBuffer()).getData();
    encoder.convert_frame(context,data);
    encoder.encode_next_frame(context,frameDuration);
    long finish=System.currentTimeMillis();
    frames++;
    long timeTaken=finish - start;
    if (timeTaken < targetFramerateSleepTime) {
      Thread.sleep(targetFramerateSleepTime - timeTaken);
    }
 else {
      excessTime+=timeTaken;
    }
  }
  encoder.encode_finish(context);
  long videoEndTime=System.currentTimeMillis();
  long duration=((videoEndTime - videoStartTime) / 1000);
  log.info("String_Node_Str" + frames + "String_Node_Str"+ duration+ "String_Node_Str"+ targetFramerate+ "String_Node_Str"+ frames / duration);
  return outputFile;
}

Fixed version (ground truth):
@Override public File call() throws Exception {
  int frames=0;
  Rectangle screenSize=getScreenSize();
  File outputFile=File.createTempFile("String_Node_Str","String_Node_Str");
  JnaLibraryLoader.init();
  EncoderInterface encoder=JnaLibraryLoader.getEncoder();
  Pointer context=encoder.create_context(outputFile.getCanonicalPath());
  int result=encoder.init_encoder(context,(int)screenSize.getWidth(),(int)screenSize.getHeight(),targetFramerate);
  encoder.init_codec(context);
  encoder.init_image(context);
  log.info("String_Node_Str" + outputFile.getCanonicalPath());
  Robot robot=new Robot();
  long excessTime=0;
  long videoStartTime=System.currentTimeMillis();
  while (!shouldStop) {
    int frameDuration=1 + (int)(excessTime / targetFramerateSleepTime);
    excessTime=excessTime % targetFramerateSleepTime;
    long start=System.currentTimeMillis();
    BufferedImage image=robot.createScreenCapture(screenSize);
    int[] data=((DataBufferInt)image.getRaster().getDataBuffer()).getData();
    encoder.convert_frame(context,data);
    encoder.encode_next_frame(context,frameDuration);
    long finish=System.currentTimeMillis();
    frames++;
    long timeTaken=finish - start;
    if (timeTaken < targetFramerateSleepTime) {
      Thread.sleep(targetFramerateSleepTime - timeTaken);
    }
 else {
      excessTime+=timeTaken;
    }
  }
  encoder.encode_finish(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;
}