SMTChecker: Add support for block.blobbasefee and blobhash() #15796
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We overapproximate the behaviour here in the same way as for `block.basefee` and `blockhash`. For the first we only add the basic domain constraints and the second is modelled as an uninterpreted function. We also model the fact that the number of blobs in transaction is limited by returning 0 from blobhash() if the argument is greater or equal to the limit. The current limit is 6, but it will soon be increased to 9 in pectra update. Since we overapproximate the behaviour anyway, we can use the pectra limit immediately.
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We overapproximate the behaviour here in the same way as for
block.basefeeandblockhash.For the first we only add the basic domain constraints and the second is modelled as an uninterpreted function.
We also model the fact that the number of blobs in transaction is limited by returning 0 from blobhash() if the argument is greater or equal to the limit. The current limit is 6, but it will soon be increased to 9 in pectra update.
Since we overapproximate the behaviour anyway, we can use the pectra limit immediately.
This PR is split into two commits, where the first one just consolidates information related to
blockin one place, instead of keeping the information in two separate places as was done before.This makes the consequent additions easier.
Resolves #14780 and #14786.