Program: 42664
Project: 42664
Buggy source:
/** 
 * Constructor for sensor player
 * @param filePath the file to play
 * @param playBackSpeed the playback sped
 */
public LineByLineSensorPlayer(String filePath,double playBackSpeed){
  new RobobuggyLogicNotification("String_Node_Str",RobobuggyMessageLevel.NOTE);
  Thread thread=new Thread(){
    public void run(){
      Gson translator=new GsonBuilder().create();
      try {
        InputStream is=new FileInputStream(filePath);
        InputStreamReader isr=new InputStreamReader(is);
        BufferedReader br=new BufferedReader(isr);
        String nextLine;
        nextLine=br.readLine();
        nextLine=br.readLine();
        nextLine=br.readLine();
        nextLine=br.readLine();
        nextLine=br.readLine();
        nextLine=br.readLine();
        nextLine=br.readLine();
        nextLine=nextLine.substring(0,nextLine.length() - 1);
        JsonObject sensorObject=translator.fromJson(nextLine,JsonObject.class);
        long startTimeSensor=sensorObject.get("String_Node_Str").getAsLong();
        long startTimeReal=new Date().getTime();
        nextLine=br.readLine();
        while (nextLine != null && !nextLine.startsWith("String_Node_Str")) {
          try {
            nextLine=nextLine.substring(0,nextLine.length() - 1);
            long now=new Date().getTime();
            sensorObject=translator.fromJson(nextLine,JsonObject.class);
            long dt=now - startTimeReal;
            PlayBackUtil.parseSensorLog(sensorObject,translator,dt,startTimeSensor,RobobuggyConfigFile.getPlayBackSpeed());
            nextLine=br.readLine();
          }
 catch (          IOException e) {
            e.printStackTrace();
          }
catch (          InterruptedException e) {
            e.printStackTrace();
          }
        }
      }
 catch (      FileNotFoundException e) {
        new RobobuggyLogicNotification("String_Node_Str",RobobuggyMessageLevel.EXCEPTION);
        e.printStackTrace();
      }
catch (      IOException e1) {
        e1.printStackTrace();
      }
    }
  }
;
  thread.start();
}

Fixed version (ground truth):
/** 
 * Constructor for sensor player
 * @param filePath the file to play
 * @param playBackSpeed the playback sped
 */
public LineByLineSensorPlayer(String filePath,double playBackSpeed){
  new RobobuggyLogicNotification("String_Node_Str",RobobuggyMessageLevel.NOTE);
  Thread thread=new Thread(){
    public void run(){
      Gson translator=new GsonBuilder().create();
      try {
        InputStream is=new FileInputStream(filePath);
        InputStreamReader isr=new InputStreamReader(is,"String_Node_Str");
        BufferedReader br=new BufferedReader(isr);
        String nextLine;
        nextLine=br.readLine();
        if (nextLine != null)         nextLine=br.readLine();
 else {
          new RobobuggyLogicNotification("String_Node_Str",RobobuggyMessageLevel.EXCEPTION);
          br.close();
          return;
        }
        if (nextLine != null)         nextLine=br.readLine();
        if (nextLine != null)         nextLine=br.readLine();
        if (nextLine != null)         nextLine=br.readLine();
        if (nextLine != null)         nextLine=br.readLine();
        if (nextLine != null)         nextLine=br.readLine();
        if (nextLine != null)         nextLine=nextLine.substring(0,nextLine.length() - 1);
        JsonObject sensorObject=translator.fromJson(nextLine,JsonObject.class);
        long startTimeSensor=sensorObject.get("String_Node_Str").getAsLong();
        long startTimeReal=new Date().getTime();
        nextLine=br.readLine();
        while (nextLine != null && !nextLine.startsWith("String_Node_Str")) {
          try {
            nextLine=nextLine.substring(0,nextLine.length() - 1);
            long now=new Date().getTime();
            sensorObject=translator.fromJson(nextLine,JsonObject.class);
            long dt=now - startTimeReal;
            PlayBackUtil.parseSensorLog(sensorObject,translator,dt,startTimeSensor,RobobuggyConfigFile.getPlayBackSpeed());
            nextLine=br.readLine();
          }
 catch (          IOException e) {
            e.printStackTrace();
          }
catch (          InterruptedException e) {
            e.printStackTrace();
          }
        }
        br.close();
      }
 catch (      FileNotFoundException e) {
        new RobobuggyLogicNotification("String_Node_Str",RobobuggyMessageLevel.EXCEPTION);
        e.printStackTrace();
      }
catch (      IOException e1) {
        e1.printStackTrace();
      }
    }
  }
;
  thread.start();
}