Program: 158861
Project: 158861
Buggy source:
@Override public boolean apply(Game game,Ability source){
  Cards cardsToCast=new CardsImpl();
  Player targetOpponent=game.getPlayer(targetPointer.getFirst(game,source));
  MageObject sourceObject=source.getSourceObject(game);
  if (targetOpponent != null && sourceObject != null) {
    List<Card> allCards=targetOpponent.getLibrary().getTopCards(game,7);
    Cards cards=new CardsImpl(Zone.LIBRARY,allCards);
    targetOpponent.revealCards(sourceObject.getIdName() + "String_Node_Str" + targetOpponent.getName()+ "String_Node_Str",cards,game);
    for (    Card card : allCards) {
      if (filter.match(card,game)) {
        cardsToCast.add(card);
      }
    }
    if (cardsToCast.size() > 0) {
      int numberOfSpells=1;
      if (SpellMasteryCondition.getInstance().apply(game,source)) {
        numberOfSpells++;
      }
      Player controller=game.getPlayer(source.getControllerId());
      if (controller != null) {
        TargetCard target=new TargetCard(Zone.LIBRARY,filter);
        target.setNotTarget(true);
        while (numberOfSpells > 0 && cardsToCast.size() > 0 && controller.chooseUse(outcome,"String_Node_Str",source,game) && controller.choose(outcome,cardsToCast,target,game)) {
          Card card=cardsToCast.get(target.getFirstTarget(),game);
          if (card != null) {
            controller.cast(card.getSpellAbility(),game,true);
            numberOfSpells--;
            cardsToCast.remove(card);
            allCards.remove(card);
          }
          if (!controller.isInGame()) {
            return false;
          }
          target.clearChosen();
        }
      }
      targetOpponent.moveCards(allCards,Zone.LIBRARY,Zone.GRAVEYARD,source,game);
    }
    return true;
  }
  return false;
}

Fixed version (ground truth):
@Override public boolean apply(Game game,Ability source){
  Cards cardsToCast=new CardsImpl();
  Player targetOpponent=game.getPlayer(targetPointer.getFirst(game,source));
  MageObject sourceObject=source.getSourceObject(game);
  if (targetOpponent != null && sourceObject != null) {
    List<Card> allCards=targetOpponent.getLibrary().getTopCards(game,7);
    Cards cards=new CardsImpl(Zone.LIBRARY,allCards);
    targetOpponent.revealCards(sourceObject.getIdName() + "String_Node_Str" + targetOpponent.getName()+ "String_Node_Str",cards,game);
    for (    Card card : allCards) {
      if (filter.match(card,game)) {
        cardsToCast.add(card);
      }
    }
    if (cardsToCast.size() > 0) {
      int numberOfSpells=1;
      if (SpellMasteryCondition.getInstance().apply(game,source)) {
        numberOfSpells++;
      }
      Player controller=game.getPlayer(source.getControllerId());
      if (controller != null) {
        TargetCard target=new TargetCard(Zone.LIBRARY,filter);
        target.setNotTarget(true);
        while (numberOfSpells > 0 && cardsToCast.size() > 0 && controller.chooseUse(outcome,"String_Node_Str",source,game) && controller.choose(outcome,cardsToCast,target,game)) {
          Card card=cardsToCast.get(target.getFirstTarget(),game);
          if (card != null) {
            controller.cast(card.getSpellAbility(),game,true);
            numberOfSpells--;
            cardsToCast.remove(card);
            allCards.remove(card);
          }
          if (!controller.isInGame()) {
            return false;
          }
          target.clearChosen();
        }
      }
    }
    targetOpponent.moveCards(allCards,Zone.LIBRARY,Zone.GRAVEYARD,source,game);
    return true;
  }
  return false;
}