cvc5 vs Dafny
cvc5
cvc5.github.io
Dafny
dafny.orgSide by side
| Figure | cvc5 | Dafny |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Formal Verification Tools | 8.7 (#1) | 7.8 (#16) |
| Platforms | The project provides source and binary releases for Linux, MacOS, and Windows. | Installation instructions cover Windows, Linux, and macOS; the project repository also lists binary downloads for FreeBSD. |
| Purpose | cvc5 is an efficient open-source automatic theorem prover for satisfiability modulo theories problems. | It helps developers write code that can be verified against specifications to reduce the risk of late-stage bugs. |
| Support | The project directs bug reports to its GitHub issue tracker and questions, feature requests, and contributions to GitHub Discussions. | The project homepage directs users to a Zulip channel to ask questions about Dafny. |
Plans
In their own words
cvc5
cvc5 is a free, open-source solver for satisfiability modulo theories problems. It determines whether first-order formulas are satisfiable or valid across combinations of background theories, including arrays, bit-vectors, floating-point numbers, arithmetic, and strings. It also has a Syntax-Guided Synthesis engine for synthesizing functions against those theories.
The solver can run as a standalone command-line tool or be used as a library, with C++, C, Java, and Python APIs. Its binary accepts SMT-LIB v2 and SyGuS-IF input, and it can produce proofs and unsatisfiable cores to explain unsatisfiability results. The project links to an online interface for running SMT-LIB scripts and provides source releases and binaries for Linux, macOS, and Windows. cvc5 is led jointly by Stanford University and the University of Iowa. Research and commercial use are described as essentially unrestricted. The default license is modified BSD; using optional GPLv3 dependencies makes the combined work subject to GPLv3.