Program: 19758
Project: 19758
Buggy source:
@Override protected Food chooseFood(){
  List<Food> foodArray=new LinkedList<Food>();
  Food suggestedFood, cooperateFood, defectFood, choice;
  String groupID=this.getDataModel().getGroupId();
  if (groupID != null) {
    suggestedFood=this.askAdvice();
  }
  for (  Food noms : getConn().availableFoods()) {
    foodArray.add(noms);
  }
  if (foodArray.get(0).getNutrition() > foodArray.get(1).getNutrition()) {
    cooperateFood=foodArray.get(0);
    defectFood=foodArray.get(1);
  }
 else {
    cooperateFood=foodArray.get(1);
    defectFood=foodArray.get(0);
  }
switch (this.getDataModel().getAgentType()) {
case AC:
    choice=cooperateFood;
  break;
case AD:
choice=defectFood;
break;
case R:
choice=(uniformRandBoolean() ? cooperateFood : defectFood);
break;
case TFT:
Food opponentPreviousChoice=cooperateFood;
List<String> members=this.getDataModel().getHuntingTeam().getMembers();
if (members.size() == 1) {
choice=cooperateFood;
return choice;
}
if (members.get(0).equals(this.getId())) {
if (getConn().getAgentById(members.get(1)) != null) {
if (getConn().getAgentById(members.get(1)).getHuntingHistory().size() != 1) {
opponentPreviousChoice=getConn().getAgentById(members.get(1)).getHuntingHistory().getValue(1);
}
}
}
 else {
if (getConn().getAgentById(members.get(0)) != null) {
if (getConn().getAgentById(members.get(0)).getHuntingHistory().size() != 1) {
opponentPreviousChoice=getConn().getAgentById(members.get(0)).getHuntingHistory().getValue(1);
}
}
}
choice=opponentPreviousChoice;
break;
default :
throw new IllegalStateException("String_Node_Str");
}
return choice;
}

Fixed version (ground truth):
@Override protected Food chooseFood(){
  List<Food> foodArray=new LinkedList<Food>();
  Food suggestedFood, cooperateFood, defectFood, choice;
  String groupID=this.getDataModel().getGroupId();
  if (groupID != null) {
  }
  for (  Food noms : getConn().availableFoods()) {
    foodArray.add(noms);
  }
  if (foodArray.get(0).getNutrition() > foodArray.get(1).getNutrition()) {
    cooperateFood=foodArray.get(0);
    defectFood=foodArray.get(1);
  }
 else {
    cooperateFood=foodArray.get(1);
    defectFood=foodArray.get(0);
  }
switch (this.getDataModel().getAgentType()) {
case AC:
    choice=cooperateFood;
  break;
case AD:
choice=defectFood;
break;
case R:
choice=(uniformRandBoolean() ? cooperateFood : defectFood);
break;
case TFT:
Food opponentPreviousChoice=cooperateFood;
List<String> members=this.getDataModel().getHuntingTeam().getMembers();
if (members.size() == 1) {
choice=cooperateFood;
return choice;
}
if (members.get(0).equals(this.getId())) {
if (getConn().getAgentById(members.get(1)) != null) {
if (getConn().getAgentById(members.get(1)).getHuntingHistory().size() != 1) {
opponentPreviousChoice=getConn().getAgentById(members.get(1)).getHuntingHistory().getValue(1);
}
}
}
 else {
if (getConn().getAgentById(members.get(0)) != null) {
if (getConn().getAgentById(members.get(0)).getHuntingHistory().size() != 1) {
opponentPreviousChoice=getConn().getAgentById(members.get(0)).getHuntingHistory().getValue(1);
}
}
}
choice=opponentPreviousChoice;
break;
default :
throw new IllegalStateException("String_Node_Str");
}
return choice;
}