Program: 33686
Project: 33686
Buggy source:
@Override protected APIResponse.CODE doInBackground(String... params){
  eventKey=params[0];
  teams=new ArrayList<>();
  try {
    APIResponse<ArrayList<JsonArray>> response=DataManager.Events.getEventRankings(activity,eventKey,requestParams);
    ArrayList<JsonArray> rankList=response.getData();
    if (isCancelled()) {
      return APIResponse.CODE.NODATA;
    }
    if (!rankList.isEmpty()) {
      JsonArray headerRow=rankList.remove(0);
      for (      JsonArray row : rankList) {
        String teamKey="String_Node_Str" + row.get(1).getAsString();
        String rankingString="String_Node_Str";
        EventHelper.CaseInsensitiveMap<String> rankingElements=new EventHelper.CaseInsensitiveMap<>();
        for (int i=2; i < row.size(); i++) {
          rankingElements.put(headerRow.get(i).getAsString(),row.get(i).getAsString());
        }
        String record=null;
        Iterator it=rankingElements.entrySet().iterator();
        while (it.hasNext()) {
          Map.Entry<String,Object> entry=(Map.Entry)it.next();
          if (entry.getKey().toLowerCase().contains("String_Node_Str".toLowerCase())) {
            record="String_Node_Str" + rankingElements.get(entry.getKey()) + "String_Node_Str";
            it.remove();
            break;
          }
        }
        if (record == null) {
          Set<String> keys=rankingElements.keySet();
          if (keys.contains("String_Node_Str") && keys.contains("String_Node_Str") && keys.contains("String_Node_Str")) {
            record="String_Node_Str" + rankingElements.get("String_Node_Str") + "String_Node_Str"+ rankingElements.get("String_Node_Str")+ "String_Node_Str"+ rankingElements.get("String_Node_Str")+ "String_Node_Str";
            rankingElements.remove("String_Node_Str");
            rankingElements.remove("String_Node_Str");
            rankingElements.remove("String_Node_Str");
          }
        }
        if (record == null) {
          record="String_Node_Str";
        }
        rankingString=EventHelper.createRankingBreakdown(rankingElements);
        Team team=DataManager.Teams.getTeamFromDB(activity,teamKey);
        String nickname;
        if (team != null) {
          nickname=team.getNickname();
        }
 else {
          nickname="String_Node_Str" + teamKey.substring(3);
        }
        teams.add(new RankingListElement(teamKey,row.get(1).getAsInt(),nickname,row.get(0).getAsInt(),record,rankingString));
      }
      adapter=new ListViewAdapter(activity,teams);
      return response.getCode();
    }
 else {
      return APIResponse.CODE.NODATA;
    }
  }
 catch (  DataManager.NoDataException e) {
    Log.w(Constants.LOG_TAG,"String_Node_Str");
    return APIResponse.CODE.NODATA;
  }
}

Fixed version (ground truth):
@Override protected APIResponse.CODE doInBackground(String... params){
  eventKey=params[0];
  teams=new ArrayList<>();
  try {
    APIResponse<ArrayList<JsonArray>> response=DataManager.Events.getEventRankings(activity,eventKey,requestParams);
    ArrayList<JsonArray> rankList=response.getData();
    if (isCancelled()) {
      return APIResponse.CODE.NODATA;
    }
    if (!rankList.isEmpty()) {
      JsonArray headerRow=rankList.remove(0);
      for (      JsonArray row : rankList) {
        String teamKey="String_Node_Str" + row.get(1).getAsString();
        String rankingString="String_Node_Str";
        EventHelper.CaseInsensitiveMap<String> rankingElements=new EventHelper.CaseInsensitiveMap<>();
        for (int i=2; i < row.size(); i++) {
          rankingElements.put(headerRow.get(i).getAsString(),row.get(i).getAsString());
        }
        String record=EventHelper.extractRankingString(rankingElements);
        if (record == null) {
          Set<String> keys=rankingElements.keySet();
          if (keys.contains("String_Node_Str") && keys.contains("String_Node_Str") && keys.contains("String_Node_Str")) {
            record="String_Node_Str" + rankingElements.get("String_Node_Str") + "String_Node_Str"+ rankingElements.get("String_Node_Str")+ "String_Node_Str"+ rankingElements.get("String_Node_Str")+ "String_Node_Str";
            rankingElements.remove("String_Node_Str");
            rankingElements.remove("String_Node_Str");
            rankingElements.remove("String_Node_Str");
          }
        }
        if (record == null) {
          record="String_Node_Str";
        }
        rankingString=EventHelper.createRankingBreakdown(rankingElements);
        Team team=DataManager.Teams.getTeamFromDB(activity,teamKey);
        String nickname;
        if (team != null) {
          nickname=team.getNickname();
        }
 else {
          nickname="String_Node_Str" + teamKey.substring(3);
        }
        teams.add(new RankingListElement(teamKey,row.get(1).getAsInt(),nickname,row.get(0).getAsInt(),record,rankingString));
      }
      adapter=new ListViewAdapter(activity,teams);
      return response.getCode();
    }
 else {
      return APIResponse.CODE.NODATA;
    }
  }
 catch (  DataManager.NoDataException e) {
    Log.w(Constants.LOG_TAG,"String_Node_Str");
    return APIResponse.CODE.NODATA;
  }
}