Err, "no technology currently exists" is wrong, "no technology can possibly exist" to say whether something if definitively called. It's an undecidable problem

Err, "no technology currently exists" is wrong, "no technology can possibly exist" to say whether something if definitively called. It's an undecidable problem in any of the top programming languages, and some of the sub problems (like aliasing) themselves are similarly statically undecidable in any meaningful programming language. You can choose between over-approximation or under-approximation.