Additional Query for woocommerce

Hi, i looked to forum but i did not found about this.

I use post loop widget and i set this for showing products.

But, if product stock is 0 then product displaying in loop results.

How can i set it for displaying only products in stock or only featured posts?

** I tried write in additional _featured=yes _featured?’yes’ featured=yes and many options but nothing changed. Please help for this.