Applicative Common Lisp / A Computational Logic
ACL2 (Applicative Common Lisp / A Computational Logic) is the successor to nqthm, the Boyer-Moore theorem prover. ACL2 can be used to automatically or semi-automatically prove theorems and has been used extensively in real applications (e.g., proving the correctness of certain calculations in the floating point unit of the AMD K5 microprocessor. ACL2 is a very large, multipurpose system. You can use it as a programming language, a specification language, a modeling language, a formal mathematical logic, or a semi-automatic theorem prover. Because the meta-language is the same as the language (a subset of Common Lisp), it is very flexible.
To install acl2, paste this in macOS terminal after installing MacPorts
sudo port install acl2