Program: 32152
Project: 32152
Buggy source:
private void manageResponse(final SyncResponse syncResponse,final boolean isInitialSync){
  boolean isEmptyResponse=true;
  if (null != syncResponse) {
    Log.d(LOG_TAG,"String_Node_Str");
    if (null != syncResponse.rooms) {
      if ((null != syncResponse.rooms.leave) && (syncResponse.rooms.leave.size() > 0)) {
        Log.d(LOG_TAG,"String_Node_Str" + syncResponse.rooms.leave.size() + "String_Node_Str");
        Set<String> roomIds=syncResponse.rooms.leave.keySet();
        for (        String roomId : roomIds) {
          if (null != this.getStore().getRoom(roomId)) {
            this.getStore().deleteRoom(roomId);
            onLeaveRoom(roomId);
          }
        }
        isEmptyResponse=false;
      }
      if ((null != syncResponse.rooms.join) && (syncResponse.rooms.join.size() > 0)) {
        Log.d(LOG_TAG,"String_Node_Str" + syncResponse.rooms.join.size() + "String_Node_Str");
        Set<String> roomIds=syncResponse.rooms.join.keySet();
        for (        String roomId : roomIds) {
          Room room=getRoom(roomId);
          if (null != room) {
            room.handleJoinedRoomSync(syncResponse.rooms.join.get(roomId),isInitialSync);
          }
        }
        isEmptyResponse=false;
      }
      if ((null != syncResponse.rooms.invite) && (syncResponse.rooms.invite.size() > 0)) {
        Log.d(LOG_TAG,"String_Node_Str" + syncResponse.rooms.invite.size() + "String_Node_Str");
        Set<String> roomIds=syncResponse.rooms.invite.keySet();
        for (        String roomId : roomIds) {
          getRoom(roomId).handleInvitedRoomSync(syncResponse.rooms.invite.get(roomId));
        }
        isEmptyResponse=false;
      }
    }
    if ((null != syncResponse.presence) && (null != syncResponse.presence.events)) {
      for (      Event presenceEvent : syncResponse.presence.events) {
        handlePresenceEvent(presenceEvent);
      }
    }
    if (!isEmptyResponse) {
      getStore().setEventStreamToken(syncResponse.nextBatch);
      getStore().commit();
    }
  }
  if (isInitialSync) {
    onInitialSyncComplete();
  }
 else {
    try {
      onLiveEventsChunkProcessed();
    }
 catch (    Exception e) {
      Log.e(LOG_TAG,"String_Node_Str" + e + "String_Node_Str"+ e.getStackTrace());
    }
    try {
      mCallsManager.checkPendingIncomingCalls();
    }
 catch (    Exception e) {
      Log.e(LOG_TAG,"String_Node_Str" + e + "String_Node_Str"+ e.getStackTrace());
    }
  }
}

Fixed version (ground truth):
private void manageResponse(final SyncResponse syncResponse,final boolean isInitialSync){
  boolean isEmptyResponse=true;
  if (null != syncResponse) {
    Log.d(LOG_TAG,"String_Node_Str");
    if (null != syncResponse.rooms) {
      if ((null != syncResponse.rooms.leave) && (syncResponse.rooms.leave.size() > 0)) {
        Log.d(LOG_TAG,"String_Node_Str" + syncResponse.rooms.leave.size() + "String_Node_Str");
        Set<String> roomIds=syncResponse.rooms.leave.keySet();
        for (        String roomId : roomIds) {
          if (null != this.getStore().getRoom(roomId)) {
            this.getStore().deleteRoom(roomId);
            onLeaveRoom(roomId);
          }
        }
        isEmptyResponse=false;
      }
      if ((null != syncResponse.rooms.join) && (syncResponse.rooms.join.size() > 0)) {
        Log.d(LOG_TAG,"String_Node_Str" + syncResponse.rooms.join.size() + "String_Node_Str");
        Set<String> roomIds=syncResponse.rooms.join.keySet();
        for (        String roomId : roomIds) {
          Room room=getRoom(roomId);
          if (null != room) {
            room.handleJoinedRoomSync(syncResponse.rooms.join.get(roomId),isInitialSync);
          }
        }
        isEmptyResponse=false;
      }
      if ((null != syncResponse.rooms.invite) && (syncResponse.rooms.invite.size() > 0)) {
        Log.d(LOG_TAG,"String_Node_Str" + syncResponse.rooms.invite.size() + "String_Node_Str");
        Set<String> roomIds=syncResponse.rooms.invite.keySet();
        for (        String roomId : roomIds) {
          getRoom(roomId).handleInvitedRoomSync(syncResponse.rooms.invite.get(roomId));
        }
        isEmptyResponse=false;
      }
    }
    if ((null != syncResponse.presence) && (null != syncResponse.presence.events)) {
      for (      Event presenceEvent : syncResponse.presence.events) {
        handlePresenceEvent(presenceEvent);
      }
    }
    if (!isEmptyResponse) {
      getStore().setEventStreamToken(syncResponse.nextBatch);
      getStore().commit();
    }
  }
  if (isInitialSync) {
    onInitialSyncComplete();
  }
 else {
    try {
      onLiveEventsChunkProcessed();
    }
 catch (    Exception e) {
      Log.e(LOG_TAG,"String_Node_Str" + e.getLocalizedMessage());
    }
    try {
      mCallsManager.checkPendingIncomingCalls();
    }
 catch (    Exception e) {
      Log.e(LOG_TAG,"String_Node_Str" + e + "String_Node_Str"+ e.getLocalizedMessage());
    }
  }
}