Hey, it's only been a day. Don't be so hasty to think the worse, even if that is probably where your mind keeps jumping.

We had a snake escape in the store for over a year, and they found him (quite fat!) and happy down in the food bags in the basement, near the dehumidifiers. Snakes can get everywhere. You just need to take a step back, breathe, and slowly start your search. It's been over 24 hours, I believe? He could have moved locations by now, and he may not even be up in your attic.

I hope you find your snake!