Program: 159694
Project: 159694
Buggy source:
@Override public void addOptionalAdditionalCosts(Ability ability,Game game){
  if (ability instanceof SpellAbility) {
    Player player=game.getPlayer(controllerId);
    if (player != null) {
      this.resetKicker();
      for (      OptionalAdditionalCost kickerCost : kickerCosts) {
        boolean again=true;
        while (again) {
          String times="String_Node_Str";
          if (kickerCost.isRepeatable()) {
            int activated=kickerCost.getActivateCount();
            times=Integer.toString(activated + 1) + (activated == 0 ? "String_Node_Str" : "String_Node_Str");
          }
          if (kickerCost.canPay(sourceId,controllerId,game) && player.chooseUse(Outcome.Benefit,new StringBuilder("String_Node_Str").append(times).append(kickerCost.getText(false)).append("String_Node_Str").toString(),game)) {
            kickerCost.activate();
            for (Iterator it=((Costs)kickerCost).iterator(); it.hasNext(); ) {
              Cost cost=(Cost)it.next();
              if (cost instanceof ManaCostsImpl) {
                List<VariableManaCost> varCosts=((ManaCostsImpl)cost).getVariableCosts();
                if (varCosts != null) {
                  xManaValue=game.getPlayer(this.controllerId).announceXMana(varCosts.get(0).getMinX(),Integer.MAX_VALUE,"String_Node_Str" + varCosts.get(0).getText(),game,this);
                  game.informPlayers(new StringBuilder(game.getPlayer(this.controllerId).getName()).append("String_Node_Str").append(xManaValue).append("String_Node_Str").append("String_Node_Str").toString());
                  ability.getManaCostsToPay().add(new GenericManaCost(xManaValue));
                }
 else {
                  ability.getManaCostsToPay().add((ManaCostsImpl)cost.copy());
                }
              }
 else {
                ability.getCosts().add(cost.copy());
              }
            }
            again=kickerCost.isRepeatable();
          }
 else {
            again=false;
          }
        }
      }
    }
  }
}

Fixed version (ground truth):
@Override public void addOptionalAdditionalCosts(Ability ability,Game game){
  if (ability instanceof SpellAbility) {
    Player player=game.getPlayer(controllerId);
    if (player != null) {
      this.resetKicker();
      for (      OptionalAdditionalCost kickerCost : kickerCosts) {
        boolean again=true;
        while (again) {
          String times="String_Node_Str";
          if (kickerCost.isRepeatable()) {
            int activated=kickerCost.getActivateCount();
            times=Integer.toString(activated + 1) + (activated == 0 ? "String_Node_Str" : "String_Node_Str");
          }
          if (kickerCost.canPay(sourceId,controllerId,game) && player.chooseUse(Outcome.Benefit,new StringBuilder("String_Node_Str").append(times).append(kickerCost.getText(false)).append("String_Node_Str").toString(),game)) {
            kickerCost.activate();
            for (Iterator it=((Costs)kickerCost).iterator(); it.hasNext(); ) {
              Cost cost=(Cost)it.next();
              if (cost instanceof ManaCostsImpl) {
                List<VariableManaCost> varCosts=((ManaCostsImpl)cost).getVariableCosts();
                if (!varCosts.isEmpty()) {
                  xManaValue=game.getPlayer(this.controllerId).announceXMana(varCosts.get(0).getMinX(),Integer.MAX_VALUE,"String_Node_Str" + varCosts.get(0).getText(),game,this);
                  game.informPlayers(new StringBuilder(game.getPlayer(this.controllerId).getName()).append("String_Node_Str").append(xManaValue).append("String_Node_Str").append("String_Node_Str").toString());
                  ability.getManaCostsToPay().add(new GenericManaCost(xManaValue));
                }
 else {
                  ability.getManaCostsToPay().add((ManaCostsImpl)cost.copy());
                }
              }
 else {
                ability.getCosts().add(cost.copy());
              }
            }
            again=kickerCost.isRepeatable();
          }
 else {
            again=false;
          }
        }
      }
    }
  }
}