A friend of mine had a snake escape and he thought the snake was long gone. EIGHT months later, after having gone through winter, my friends neighbor found the snake in a wood pile.
Do not give up! While sometimes they are long lost, sometimes they do show up!
I had a hatchling escape mid November, and I thought she was long gone. I found her outside, next to my back porch near the end of January, alive!. She had lost a couple grams, but otherwise ok. She has picked back up in eating, and is doing fine.
Don't give up!
I'm glad you found him!