Ultimate Automizer vs Why3
| Ultimate Automizer | Why3 | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Web, Windows, Linux | Web, Linux, Windows |
| Free plan | Yes | — |
| Verification method | model-checking | deductive |
| Input languages | C, Boogie | WhyML, micro-C, micro-Python, MLCFG, Coma |
| Deployment | both | both |
| Supported formalisms | — | contracts |
| Counterexamples | — | Yes |
Both are listed in Best Formal Verification Tools. On Samsung Mobile US Press, Why3 scores higher on our published basis.