macOS
Homebrewverified · 100%
brew install prover9local Homebrew formula metadata
brew
Install prover9 with Homebrew, Nix
Automated theorem prover for first-order and equational logic. Version 2009-11A via Homebrew; verified from local package data.
install
Additional install commands
Linux
Nixverified · 92%
nix profile install nixpkgs#prover9nixpkgs package indexes · pkgs/by-name/pr/prover9/package.nix · source: api.github.com
overview
Package summary
Automated theorem prover for first-order and equational logic
Project links
Commands and aliases
- mace4
- prover9
history
Project history and usage
Prover9 is a resolution/paramodulation automated theorem prover for first-order and equational logic. It is paired with Mace4, a finite-model and counterexample finder, and both are built on William McCune's LADR library.
Project history
Prover9 succeeded McCune's Otter prover and continued the Argonne automated-deduction line associated with Otter, EQP, Mace4, and LADR. The official 2009 manual presents Prover9 as the current Prover9/Mace4 release line at that time, while the 2026 site describes LADR-2026 as a backward-compatible modernization by Jeffrey P. Machado and Larry Lesyna.
Adoption history
The package has remained useful enough for Unix package managers to carry the 2009-11A release: Homebrew lists a `prover9` formula for macOS and Linux, and the input metadata also records Nix packaging. The 2026 project site recommends LADR-2026 for Prover9 and Mace4 users while preserving old input compatibility.
How it is used
Command-line users provide one or more Prover9 input files containing formula lists, clauses, goals, options, and related objects; the manual's basic example runs `prover9 -f subset_trans.in > subset_trans.out`. Mace4 is commonly used alongside Prover9 to search for finite counterexamples before or during proof search.
Why package nerds care
For package-manager users, Prover9 is a small but historically important automated-reasoning tool: it exposes classic theorem-proving workflows as CLI programs, ships with related utilities such as Mace4 and Prooftrans, and represents the long-lived LADR codebase in reproducible Unix package collections.
Timeline
- 2009: Prover9/Mace4 2009-11A manual and examples are published as the current older release.
- 2026-03: The UNM page announces LADR-2026 as a substantially revised, backward-compatible Prover9 and Mace4 version.
- 2026-05: The official GitHub repository lists LADR 2026-5B as the latest release.
Related projects
- Mace4 searches for finite models and counterexamples for the same kinds of first-order and equational statements Prover9 accepts.
- Otter is the earlier theorem prover that Prover9 succeeded.
- Prooftrans is bundled with Prover9 to transform proofs into alternate forms, including more detailed or XML output.
Sources
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 13 platform targets.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
mace4 | cli | global executable | |
prover9 | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-08
manager version2009-11A
manager updated
local dataok
upstreamnot checked
latest detectednot detected
https://www.cs.unm.edu/~mccune/prover9/
- infoNo package-manager update timestamp was available.low confidence
- infoRelease/tag comparison is only available for GitHub repositories.https://www.cs.unm.edu/~mccune/prover9/none confidence
install metadata
Package metadata
| Package key | brew:prover9 |
|---|---|
| Version | 2009-11A |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/prover9 |
| Homepage | https://www.cs.unm.edu/~mccune/prover9/ |
| Repository | https://github.com/AlgorithmicTruth/Prover9 |
| Upstream docs | https://prover9.org/manual-2026 |
| License | GPL-2.0-only |
| Source archive | https://www.cs.unm.edu/~mccune/prover9/download/LADR-2009-11A.tar.gz |
| Bottle | available (on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | prover9 |
| Version Scheme | 0 |
| Revision | 0 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Nix95%
prover9
nix profile install nixpkgs#prover9- normalized package name match
- Matched by: Prover9
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment