Okay, so I updated my chance that the correct information is present in the brain - from 75% to 99% after seeing this talk by Brian Wowk, with the team that preserved a rabbit liver. My estimates went down, not up. There was an error in my program, which I've corrected above. Even with this correction, I strongly recommend against using it without checking it yourself first.

My probability estimates are now nearly ten times higher, and I will sign up for cryonics. I guess I should either not stake my life on my programming skills, or program better.