Program: 157966
Project: 157966
Buggy source:
@Override public boolean apply(Game game,Ability source){
  Mana types=getManaTypes(game,source);
  Choice choice=new ChoiceColor(true);
  choice.getChoices().clear();
  choice.setMessage("String_Node_Str");
  if (types.getBlack() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getRed() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getBlue() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getGreen() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getWhite() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getAny() > 0) {
    choice.getChoices().add("String_Node_Str");
    choice.getChoices().add("String_Node_Str");
    choice.getChoices().add("String_Node_Str");
    choice.getChoices().add("String_Node_Str");
    choice.getChoices().add("String_Node_Str");
  }
  if (!choice.getChoices().isEmpty()) {
    Player player=game.getPlayer(source.getControllerId());
    if (choice.getChoices().size() == 1) {
      choice.setChoice(choice.getChoices().iterator().next());
    }
 else {
      player.choose(outcome,choice,game);
    }
    if (choice.getChoice() != null) {
      Mana mana=new Mana();
switch (choice.getChoice()) {
case "String_Node_Str":
        mana.setBlack(1);
      break;
case "String_Node_Str":
    mana.setBlue(1);
  break;
case "String_Node_Str":
mana.setRed(1);
break;
case "String_Node_Str":
mana.setGreen(1);
break;
case "String_Node_Str":
mana.setWhite(1);
break;
}
checkToFirePossibleEvents(mana,game,source);
player.getManaPool().addMana(mana,game,source);
}
}
return true;
}

Fixed version (ground truth):
@Override public boolean apply(Game game,Ability source){
  Mana types=getManaTypes(game,source);
  Choice choice=new ChoiceColor(true);
  choice.getChoices().clear();
  choice.setMessage("String_Node_Str");
  if (types.getBlack() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getRed() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getBlue() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getGreen() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getWhite() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (!onlyColors && types.getColorless() > 0) {
    choice.getChoices().add("String_Node_Str");
  }
  if (types.getAny() > 0) {
    choice.getChoices().add("String_Node_Str");
    choice.getChoices().add("String_Node_Str");
    choice.getChoices().add("String_Node_Str");
    choice.getChoices().add("String_Node_Str");
    choice.getChoices().add("String_Node_Str");
    if (!onlyColors) {
      choice.getChoices().add("String_Node_Str");
    }
  }
  if (!choice.getChoices().isEmpty()) {
    Player player=game.getPlayer(source.getControllerId());
    if (choice.getChoices().size() == 1) {
      choice.setChoice(choice.getChoices().iterator().next());
    }
 else {
      player.choose(outcome,choice,game);
    }
    if (choice.getChoice() != null) {
      Mana mana=new Mana();
switch (choice.getChoice()) {
case "String_Node_Str":
        mana.setBlack(1);
      break;
case "String_Node_Str":
    mana.setBlue(1);
  break;
case "String_Node_Str":
mana.setRed(1);
break;
case "String_Node_Str":
mana.setGreen(1);
break;
case "String_Node_Str":
mana.setWhite(1);
break;
case "String_Node_Str":
mana.setColorless(1);
break;
}
checkToFirePossibleEvents(mana,game,source);
player.getManaPool().addMana(mana,game,source);
}
}
return true;
}