Program: 164473
Project: 164473
Buggy source:
@Override public void execute(Hero hero,String action){
  if (potionAttrib == null) {
    if (action.equals(AC_EAT)) {
      detach(hero.belongings.backpack);
      ((Hunger)hero.buff(Hunger.class)).satisfy(energy);
      GLog.i(message);
      hero.sprite.operate(hero.pos);
      hero.busy();
      SpellSprite.show(hero,SpellSprite.FOOD);
      Sample.INSTANCE.play(Assets.SND_EAT);
      hero.spend(1f);
      Statistics.foodEaten++;
      Badges.validateFoodEaten();
    }
 else     super.execute(hero,action);
  }
 else   if (action.equals(AC_EAT)) {
    ((Hunger)hero.buff(Hunger.class)).satisfy(Hunger.HUNGRY);
    detach(hero.belongings.backpack);
    hero.spend(1f);
    hero.busy();
    if (potionAttrib instanceof PotionOfFrost) {
      GLog.i("String_Node_Str");
switch (Random.Int(5)) {
case 0:
        GLog.i("String_Node_Str");
      Buff.affect(hero,Invisibility.class,Invisibility.DURATION);
    break;
case 1:
  GLog.i("String_Node_Str");
Buff.affect(hero,Barkskin.class).level(hero.HT / 4);
break;
case 2:
GLog.i("String_Node_Str");
Buff.detach(hero,Poison.class);
Buff.detach(hero,Cripple.class);
Buff.detach(hero,Weakness.class);
Buff.detach(hero,Bleeding.class);
break;
case 3:
GLog.i("String_Node_Str");
if (hero.HP < hero.HT) {
hero.HP=Math.min(hero.HP + hero.HT / 4,hero.HT);
hero.sprite.emitter().burst(Speck.factory(Speck.HEALING),1);
}
break;
}
}
 else potionAttrib.apply(hero);
Sample.INSTANCE.play(Assets.SND_EAT);
hero.sprite.operate(hero.pos);
switch (hero.heroClass) {
case WARRIOR:
if (hero.HP < hero.HT) {
hero.HP=Math.min(hero.HP + 5,hero.HT);
hero.sprite.emitter().burst(Speck.factory(Speck.HEALING),1);
}
break;
case MAGE:
hero.belongings.charge(false);
ScrollOfRecharging.charge(hero);
break;
case ROGUE:
case HUNTRESS:
break;
}
}
 else if (action.equals(AC_THROW)) {
if (potionAttrib instanceof PotionOfLiquidFlame || potionAttrib instanceof PotionOfToxicGas || potionAttrib instanceof PotionOfParalyticGas|| potionAttrib instanceof PotionOfFrost) {
potionAttrib.execute(hero,action);
detach(hero.belongings.backpack);
}
 else {
super.execute(hero,action);
}
}
 else {
super.execute(hero,action);
}
}

Fixed version (ground truth):
@Override public void execute(Hero hero,String action){
  if (potionAttrib == null) {
    if (action.equals(AC_EAT)) {
      detach(hero.belongings.backpack);
      ((Hunger)hero.buff(Hunger.class)).satisfy(energy);
      GLog.i(message);
      hero.sprite.operate(hero.pos);
      hero.busy();
      SpellSprite.show(hero,SpellSprite.FOOD);
      Sample.INSTANCE.play(Assets.SND_EAT);
      hero.spend(1f);
      Statistics.foodEaten++;
      Badges.validateFoodEaten();
    }
 else     super.execute(hero,action);
  }
 else   if (action.equals(AC_EAT)) {
    ((Hunger)hero.buff(Hunger.class)).satisfy(Hunger.HUNGRY);
    detach(hero.belongings.backpack);
    hero.spend(1f);
    hero.busy();
    if (potionAttrib instanceof PotionOfFrost) {
      GLog.i("String_Node_Str");
switch (Random.Int(5)) {
case 0:
        GLog.i("String_Node_Str");
      Buff.affect(hero,Invisibility.class,Invisibility.DURATION);
    break;
case 1:
  GLog.i("String_Node_Str");
Buff.affect(hero,Barkskin.class).level(hero.HT / 4);
break;
case 2:
GLog.i("String_Node_Str");
Buff.detach(hero,Poison.class);
Buff.detach(hero,Cripple.class);
Buff.detach(hero,Weakness.class);
Buff.detach(hero,Bleeding.class);
break;
case 3:
GLog.i("String_Node_Str");
if (hero.HP < hero.HT) {
hero.HP=Math.min(hero.HP + hero.HT / 4,hero.HT);
hero.sprite.emitter().burst(Speck.factory(Speck.HEALING),1);
}
break;
}
}
 else potionAttrib.apply(hero);
Sample.INSTANCE.play(Assets.SND_EAT);
hero.sprite.operate(hero.pos);
switch (hero.heroClass) {
case WARRIOR:
if (hero.HP < hero.HT) {
hero.HP=Math.min(hero.HP + 5,hero.HT);
hero.sprite.emitter().burst(Speck.factory(Speck.HEALING),1);
}
break;
case MAGE:
hero.belongings.charge(false);
ScrollOfRecharging.charge(hero);
break;
case ROGUE:
case HUNTRESS:
break;
}
}
 else if (action.equals(AC_THROW)) {
if (potionAttrib instanceof PotionOfLiquidFlame || potionAttrib instanceof PotionOfToxicGas || potionAttrib instanceof PotionOfParalyticGas|| potionAttrib instanceof PotionOfFrost) {
potionAttrib.execute(hero,action);
}
 else {
super.execute(hero,action);
}
}
 else {
super.execute(hero,action);
}
}