Program: 188353
Project: 188353
Buggy source:
private void remove(final SelectedItems<IndexedAIP> selected,final AsyncCallback<ActionImpact> callback){
  ClientSelectedItemsUtils.size(IndexedAIP.class,selected,new AsyncCallback<Long>(){
    @Override public void onFailure(    Throwable caught){
      AsyncCallbackUtils.defaultFailureTreatment(caught);
    }
    @Override public void onSuccess(    final Long size){
      Dialogs.showConfirmDialog(messages.removeConfirmDialogTitle(),messages.removeSelectedConfirmDialogMessage(size),messages.dialogNo(),messages.dialogYes(),new AsyncCallback<Boolean>(){
        @Override public void onSuccess(        Boolean confirmed){
          if (confirmed) {
            Dialogs.showPromptDialog(messages.outcomeDetailTitle(),null,null,messages.outcomeDetailPlaceholder(),RegExp.compile("String_Node_Str"),messages.cancelButton(),messages.confirmButton(),new AsyncCallback<String>(){
              @Override public void onFailure(              Throwable caught){
              }
              @Override public void onSuccess(              final String details){
                BrowserService.Util.getInstance().deleteAIP(selected,details,new LoadingAsyncCallback<Void>(){
                  @Override public void onFailureImpl(                  Throwable caught){
                    callback.onFailure(caught);
                  }
                  @Override public void onSuccessImpl(                  Void result){
                    Toast.showInfo(messages.runningInBackgroundTitle(),messages.runningInBackgroundDescription());
                    callback.onSuccess(ActionImpact.DESTROYED);
                  }
                }
);
              }
            }
);
          }
        }
        @Override public void onFailure(        Throwable caught){
        }
      }
);
    }
  }
);
}

Fixed version (ground truth):
private void remove(final SelectedItems<IndexedAIP> selected,final AsyncCallback<ActionImpact> callback){
  ClientSelectedItemsUtils.size(IndexedAIP.class,selected,new AsyncCallback<Long>(){
    @Override public void onFailure(    Throwable caught){
      AsyncCallbackUtils.defaultFailureTreatment(caught);
    }
    @Override public void onSuccess(    final Long size){
      Dialogs.showConfirmDialog(messages.removeConfirmDialogTitle(),messages.removeSelectedConfirmDialogMessage(size),messages.dialogNo(),messages.dialogYes(),new AsyncCallback<Boolean>(){
        @Override public void onSuccess(        Boolean confirmed){
          if (confirmed) {
            Dialogs.showPromptDialog(messages.outcomeDetailTitle(),null,null,messages.outcomeDetailPlaceholder(),RegExp.compile("String_Node_Str"),messages.cancelButton(),messages.confirmButton(),false,new AsyncCallback<String>(){
              @Override public void onFailure(              Throwable caught){
              }
              @Override public void onSuccess(              final String details){
                BrowserService.Util.getInstance().deleteAIP(selected,details,new LoadingAsyncCallback<Void>(){
                  @Override public void onFailureImpl(                  Throwable caught){
                    callback.onFailure(caught);
                  }
                  @Override public void onSuccessImpl(                  Void result){
                    Toast.showInfo(messages.runningInBackgroundTitle(),messages.runningInBackgroundDescription());
                    callback.onSuccess(ActionImpact.DESTROYED);
                  }
                }
);
              }
            }
);
          }
        }
        @Override public void onFailure(        Throwable caught){
        }
      }
);
    }
  }
);
}