# cvc5/cvc5

cvc5 is an open-source automatic theorem prover for Satisfiability Modulo Theories (SMT) problems.

Repository: https://github.com/cvc5/cvc5
Canonical: https://ross.abutalabs.com/products/cvc5
Language: SMT
License: NOASSERTION
License Family: other
Last push: 2026-08-25T18:56:56+00:00

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 71, longevity 100
- inputs: {"age_days": 5018, "days_push": 8, "days_rel": 118, "gap_med": 79, "n_releases_24m": 6}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1357, forks 300 (observed 2026-08-28T04:04:29.370275+00:00)

## What it is
cvc5 is an open-source automatic theorem prover for Satisfiability Modulo Theories (SMT) problems, determining the satisfiability of first-order formulas modulo combinations of theories. It can be used as a stand-alone CLI tool or embedded as a C++ library with APIs for Python, Java, and other languages.

## Use cases
- solve satisfiability modulo theories problems
- verify software or hardware correctness with formal methods
- check satisfiability of logical formulas with arithmetic, arrays, or bit-vectors
- embed an SMT solver into a Python or Java application
- use a solver in program analysis or symbolic execution
- solve constraint-solving puzzles and scheduling constraints

## When to choose
- you need a high-performance, actively maintained SMT solver
- you need APIs in multiple languages or a standalone binary
- you need support for combined theories like arithmetic, bit-vectors, and arrays
- you want an open-source, extensible solver for research or teaching

## When to avoid
- you only need a plain SAT solver without theory support
- you need a lightweight dependency for a small project
- you need a solver with a permissive license for proprietary redistribution without reviewing the license terms

## Facets
- artifact type: library
- maturity: active
- function: interpreter, parser, testing, math, sdk
- domain: programming-languages, developer-tools, mathematics
- platform: windows, cpp, python, jvm, cli
- tags: smt-solver, theorem-prover, satisfiability, formal-methods, constraint-solving, symbolic-reasoning, algorithms, verification, linux, macos

## Member repositories
- cvc5/cvc5 (main) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:29.370275+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:41:49.623057+00:00, confidence not recorded.
  - readme: https://github.com/cvc5/cvc5 (fetched 2026-08-28T04:04:29.370275+00:00, sha e9141da050a5)
- Data as of 2026-08-30T08:39:29.467469+00:00.