Program: 159558
Project: 159558
Buggy source:
@Override public boolean validate(Deck deck){
  boolean valid=true;
  if (deck.getCards().size() < 60) {
    invalid.put("String_Node_Str","String_Node_Str" + deck.getCards().size() + "String_Node_Str");
    valid=false;
  }
  if (deck.getSideboard().size() > 15) {
    invalid.put("String_Node_Str","String_Node_Str" + deck.getSideboard().size() + "String_Node_Str");
    valid=false;
  }
  List<String> basicLandNames=new ArrayList<String>(Arrays.asList("String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str"));
  Map<String,Integer> counts=new HashMap<String,Integer>();
  countCards(counts,deck.getCards());
  countCards(counts,deck.getSideboard());
  for (  Entry<String,Integer> entry : counts.entrySet()) {
    if (entry.getValue() > 4) {
      if (!basicLandNames.contains(entry.getKey()) && !entry.getKey().equals("String_Node_Str") && !entry.getKey().equals("String_Node_Str")) {
        invalid.put(entry.getKey(),"String_Node_Str" + entry.getValue());
        valid=false;
      }
    }
  }
  for (  String bannedCard : banned) {
    if (counts.containsKey(bannedCard)) {
      invalid.put(bannedCard,"String_Node_Str");
      valid=false;
    }
  }
  for (  String restrictedCard : restricted) {
    if (counts.containsKey(restrictedCard)) {
      int count=counts.get(restrictedCard);
      if (count > 1) {
        invalid.put(restrictedCard,"String_Node_Str" + count);
        valid=false;
      }
    }
  }
  if (!setCodes.isEmpty()) {
    for (    Card card : deck.getCards()) {
      if (!setCodes.contains(card.getExpansionSetCode())) {
        boolean legal=false;
        List<CardInfo> cardInfos=CardRepository.instance.findCards(card.getName());
        for (        CardInfo cardInfo : cardInfos) {
          if (setCodes.contains(cardInfo.getSetCode())) {
            legal=true;
            break;
          }
        }
        if (!legal && !invalid.containsKey(card.getName())) {
          invalid.put(card.getName(),"String_Node_Str" + card.getExpansionSetCode());
          valid=false;
        }
      }
    }
    for (    Card card : deck.getSideboard()) {
      if (!setCodes.contains(card.getExpansionSetCode())) {
        boolean legal=false;
        List<CardInfo> cardInfos=CardRepository.instance.findCards(card.getName());
        for (        CardInfo cardInfo : cardInfos) {
          if (setCodes.contains(cardInfo.getSetCode())) {
            legal=true;
            break;
          }
        }
        if (!legal && !invalid.containsKey(card.getName())) {
          invalid.put(card.getName(),"String_Node_Str" + card.getExpansionSetCode());
          valid=false;
        }
      }
    }
  }
  return valid;
}

Fixed version (ground truth):
@Override public boolean validate(Deck deck){
  boolean valid=true;
  if (deck.getCards().size() < 60) {
    invalid.put("String_Node_Str","String_Node_Str" + deck.getCards().size() + "String_Node_Str");
    valid=false;
  }
  if (deck.getSideboard().size() > 15) {
    invalid.put("String_Node_Str","String_Node_Str" + deck.getSideboard().size() + "String_Node_Str");
    valid=false;
  }
  List<String> basicLandNames=new ArrayList<String>(Arrays.asList("String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str"));
  Map<String,Integer> counts=new HashMap<String,Integer>();
  countCards(counts,deck.getCards());
  countCards(counts,deck.getSideboard());
  for (  Entry<String,Integer> entry : counts.entrySet()) {
    if (entry.getValue() > 4) {
      if (!basicLandNames.contains(entry.getKey()) && !entry.getKey().equals("String_Node_Str") && !entry.getKey().equals("String_Node_Str")) {
        invalid.put(entry.getKey(),"String_Node_Str" + entry.getValue());
        valid=false;
      }
    }
  }
  for (  String bannedCard : banned) {
    if (counts.containsKey(bannedCard)) {
      invalid.put(bannedCard,"String_Node_Str");
      valid=false;
    }
  }
  for (  String restrictedCard : restricted) {
    if (counts.containsKey(restrictedCard)) {
      int count=counts.get(restrictedCard);
      if (count > 1) {
        invalid.put(restrictedCard,"String_Node_Str" + count);
        valid=false;
      }
    }
  }
  if (!setCodes.isEmpty()) {
    for (    Card card : deck.getCards()) {
      if (!setCodes.contains(card.getExpansionSetCode())) {
        boolean legal=false;
        List<CardInfo> cardInfos=CardRepository.instance.findCards(card.getName());
        for (        CardInfo cardInfo : cardInfos) {
          if (setCodes.contains(cardInfo.getSetCode())) {
            legal=true;
            break;
          }
        }
        if (!legal && !invalid.containsKey(card.getName())) {
          invalid.put(card.getName(),"String_Node_Str" + card.getExpansionSetCode());
          valid=false;
        }
      }
    }
    for (    Card card : deck.getSideboard()) {
      if (!setCodes.contains(card.getExpansionSetCode())) {
        boolean legal=false;
        List<CardInfo> cardInfos=CardRepository.instance.findCards(card.getName());
        for (        CardInfo cardInfo : cardInfos) {
          if (setCodes.contains(cardInfo.getSetCode())) {
            legal=true;
            break;
          }
        }
        if (!legal && !invalid.containsKey(card.getName())) {
          invalid.put(card.getName(),"String_Node_Str" + card.getExpansionSetCode());
          valid=false;
        }
      }
    }
  }
  return valid;
}