I am very sorry to hear this. I have had snakes escape that were very dear to me. Hopefully, you will find him. I trick I learned, take some flour and sprinkle that on the floor near good hiding spots. The snake will slither through the flour and you can track where he likes to hang out the most. Whereever you notice the tracks put down some F/T pinkies for him to eat until you find him. I really hope that this helps and good luck finding him!!!