Program: 10213
Project: 10213
Buggy source:
@Override public String getAttribute(Attribute attribute){
  if (attribute == null)   return null;
  if (attribute.startsWith("String_Node_Str"))   return new Element(prefix).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str")) {
    ArrayList<dEntity> entities=new ArrayList<dEntity>();
    for (    Entity entity : getWorld().getEntities()) {
      entities.add(new dEntity(entity));
    }
    return new dList(entities).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str")) {
    ArrayList<dEntity> entities=new ArrayList<dEntity>();
    for (    Entity entity : getWorld().getLivingEntities()) {
      entities.add(new dEntity(entity));
    }
    return new dList(entities).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str")) {
    ArrayList<dPlayer> players=new ArrayList<dPlayer>();
    for (    Player player : getWorld().getPlayers()) {
      if (!CitizensAPI.getNPCRegistry().isNPC(player))       players.add(new dPlayer(player));
    }
    return new dList(players).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().canGenerateStructures()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str")) {
    dList chunks=new dList();
    for (    Chunk ent : this.getWorld().getLoadedChunks())     chunks.add(new dChunk((CraftChunk)ent).identify());
    return chunks.getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str")) {
    int random=CoreUtilities.getRandom().nextInt(getWorld().getLoadedChunks().length);
    return new dChunk((CraftChunk)getWorld().getLoadedChunks()[random]).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getSeaLevel()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new dLocation(getWorld().getSpawnLocation()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getName()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getSeed()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getAllowAnimals()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getAllowMonsters()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getPVP()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getAmbientSpawnLimit()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getAnimalSpawnLimit()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().isAutoSave()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getDifficulty().name()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getDifficulty().name()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getMaxHeight()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getMonsterSpawnLimit()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Duration(getWorld().getTicksPerAnimalSpawns()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Duration(getWorld().getTicksPerMonsterSpawns()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getWaterAnimalSpawnLimit()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str")) {
    long time=getWorld().getTime();
    String period;
    if (time >= 23000)     period="String_Node_Str";
 else     if (time >= 13500)     period="String_Node_Str";
 else     if (time >= 12500)     period="String_Node_Str";
 else     period="String_Node_Str";
    return new Element(period).getAttribute(attribute.fulfill(2));
  }
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getFullTime()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getTime()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str") || attribute.startsWith("String_Node_Str"))   return new Element((int)((getWorld().getFullTime() / 24000) % 8) + 1).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().hasStorm()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Duration((long)getWorld().getThunderDuration()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().isThundering()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Duration((long)getWorld().getWeatherDuration()).getAttribute(attribute.fulfill(1));
  for (  Property property : PropertyParser.getProperties(this)) {
    String returned=property.getAttribute(attribute);
    if (returned != null)     return returned;
  }
  return new Element(identify()).getAttribute(attribute);
}

Fixed version (ground truth):
@Override public String getAttribute(Attribute attribute){
  if (attribute == null)   return null;
  if (attribute.startsWith("String_Node_Str"))   return new Element(prefix).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str")) {
    ArrayList<dEntity> entities=new ArrayList<dEntity>();
    for (    Entity entity : getWorld().getEntities()) {
      entities.add(new dEntity(entity));
    }
    return new dList(entities).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str")) {
    ArrayList<dEntity> entities=new ArrayList<dEntity>();
    for (    Entity entity : getWorld().getLivingEntities()) {
      entities.add(new dEntity(entity));
    }
    return new dList(entities).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str")) {
    ArrayList<dPlayer> players=new ArrayList<dPlayer>();
    for (    Player player : getWorld().getPlayers()) {
      if (Depends.citizens == null || !CitizensAPI.getNPCRegistry().isNPC(player))       players.add(new dPlayer(player));
    }
    return new dList(players).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().canGenerateStructures()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str")) {
    dList chunks=new dList();
    for (    Chunk ent : this.getWorld().getLoadedChunks())     chunks.add(new dChunk((CraftChunk)ent).identify());
    return chunks.getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str")) {
    int random=CoreUtilities.getRandom().nextInt(getWorld().getLoadedChunks().length);
    return new dChunk((CraftChunk)getWorld().getLoadedChunks()[random]).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getSeaLevel()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new dLocation(getWorld().getSpawnLocation()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getName()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getSeed()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getAllowAnimals()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getAllowMonsters()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getPVP()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getAmbientSpawnLimit()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getAnimalSpawnLimit()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().isAutoSave()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getDifficulty().name()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getDifficulty().name()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getMaxHeight()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getMonsterSpawnLimit()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Duration(getWorld().getTicksPerAnimalSpawns()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Duration(getWorld().getTicksPerMonsterSpawns()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getWaterAnimalSpawnLimit()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str")) {
    long time=getWorld().getTime();
    String period;
    if (time >= 23000)     period="String_Node_Str";
 else     if (time >= 13500)     period="String_Node_Str";
 else     if (time >= 12500)     period="String_Node_Str";
 else     period="String_Node_Str";
    return new Element(period).getAttribute(attribute.fulfill(2));
  }
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getFullTime()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().getTime()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str") || attribute.startsWith("String_Node_Str"))   return new Element((int)((getWorld().getFullTime() / 24000) % 8) + 1).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().hasStorm()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Duration((long)getWorld().getThunderDuration()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getWorld().isThundering()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Duration((long)getWorld().getWeatherDuration()).getAttribute(attribute.fulfill(1));
  for (  Property property : PropertyParser.getProperties(this)) {
    String returned=property.getAttribute(attribute);
    if (returned != null)     return returned;
  }
  return new Element(identify()).getAttribute(attribute);
}