Verification of unsafe languages such as unsafe Rust (here), or C, PHP or assembly (in other research) tries to show if some particular program is correct or no

Verification of unsafe languages such as unsafe Rust (here), or C, PHP or assembly (in other research) tries to show if some particular program is correct or not — by exhibiting bugs, proving safety, or both. Tons of approaches exist. But verification can be easier for higher-level languages.