https://medium.com/@ahelwer/checking-firewall-equivalence-wi...
it's not a pure SAT problem, but Z3 works (in a way I don't understand) by reducing constraint problems involving integers and even more complicated domains into SAT problems.
[0] https://en.wikipedia.org/wiki/Satisfiability_modulo_theories
[1] https://news.ycombinator.com/item?id=23997128
https://medium.com/@ahelwer/checking-firewall-equivalence-wi...
it's not a pure SAT problem, but Z3 works (in a way I don't understand) by reducing constraint problems involving integers and even more complicated domains into SAT problems.