Program: 170559
Project: 170559
Buggy source:
@Override public void loadUsers(final int page,final boolean isReload){
  if (type.equals(UserListFragment.UserListType.SEARCH)) {
    searchUsers(page);
    return;
  }
  mView.showLoading();
  final boolean readCacheFirst=page == 1 && !isReload;
  HttpObserver<ArrayList<User>> httpObserver=new HttpObserver<ArrayList<User>>(){
    @Override public void onError(    Throwable error){
      mView.hideLoading();
      mView.showShortToast(error.getMessage());
    }
    @Override public void onSuccess(    HttpResponse<ArrayList<User>> response){
      mView.hideLoading();
      if (isReload || users == null || readCacheFirst) {
        users=response.body();
      }
 else {
        users.addAll(response.body());
      }
      mView.showUsers(users);
    }
  }
;
  generalRxHttpExecute(new IObservableCreator<ArrayList<User>>(){
    @Override public Observable<Response<ArrayList<User>>> createObservable(    boolean forceNetWork){
      if (type.equals(UserListFragment.UserListType.STARGAZERS)) {
        return getRepoService().getStargazers(forceNetWork,user,repo,page);
      }
 else       if (type.equals(UserListFragment.UserListType.WATCHERS)) {
        return getRepoService().getWatchers(forceNetWork,user,repo,page);
      }
 else       if (type.equals(UserListFragment.UserListType.FOLLOWERS)) {
        return getUserService().getFollowers(forceNetWork,user,page);
      }
 else       if (type.equals(UserListFragment.UserListType.FOLLOWING)) {
        return getUserService().getFollowing(forceNetWork,user,page);
      }
 else {
        throw new IllegalArgumentException(type.name());
      }
    }
  }
,httpObserver,readCacheFirst);
}

Fixed version (ground truth):
@Override public void loadUsers(final int page,final boolean isReload){
  if (type.equals(UserListFragment.UserListType.SEARCH)) {
    searchUsers(page);
    return;
  }
  mView.showLoading();
  final boolean readCacheFirst=page == 1 && !isReload;
  HttpObserver<ArrayList<User>> httpObserver=new HttpObserver<ArrayList<User>>(){
    @Override public void onError(    Throwable error){
      mView.hideLoading();
      mView.showShortToast(error.getMessage());
    }
    @Override public void onSuccess(    HttpResponse<ArrayList<User>> response){
      mView.hideLoading();
      if (isReload || users == null || readCacheFirst) {
        users=response.body();
      }
 else {
        users.addAll(response.body());
      }
      if (response.body().size() > 0) {
        mView.showUsers(users);
      }
 else {
        mView.setCanLoadMore(false);
      }
    }
  }
;
  generalRxHttpExecute(new IObservableCreator<ArrayList<User>>(){
    @Override public Observable<Response<ArrayList<User>>> createObservable(    boolean forceNetWork){
      if (type.equals(UserListFragment.UserListType.STARGAZERS)) {
        return getRepoService().getStargazers(forceNetWork,user,repo,page);
      }
 else       if (type.equals(UserListFragment.UserListType.WATCHERS)) {
        return getRepoService().getWatchers(forceNetWork,user,repo,page);
      }
 else       if (type.equals(UserListFragment.UserListType.FOLLOWERS)) {
        return getUserService().getFollowers(forceNetWork,user,page);
      }
 else       if (type.equals(UserListFragment.UserListType.FOLLOWING)) {
        return getUserService().getFollowing(forceNetWork,user,page);
      }
 else {
        throw new IllegalArgumentException(type.name());
      }
    }
  }
,httpObserver,readCacheFirst);
}