libz3-4 4.4.1-0.3build3 (amd64 binary) in ubuntu bionic

 Z3 is a state-of-the art theorem prover from Microsoft Research. It can be
 used to check the satisfiability of logical formulas over one or more
 theories. Z3 offers a compelling match for software analysis and verification
 tools, since several common software constructs map directly into supported
 theories.
 .
 This package contains runtime libraries. You shouldn't have to install it
 manually.