CPAchecker vs K Framework
CPAchecker
cpachecker.sosy-lab.orgK Framework
kframework.orgSide by side
| Figure | CPAchecker | K Framework |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Formal Verification Tools | 8.0 (#10) | 7.5 (#22) |
| Headquarters | Munich, Germany | The K site lists the address 202 S Broadway Ave #31, Urbana, IL. |
| Purpose | CPAchecker is a tool for configurable software verification based on configurable program analysis concepts. | K is a rewrite-based executable semantic framework for defining programming languages, type systems, and formal analysis tools. |
| Support | The project directs installation questions, bug reports, and suggestions to its CPAchecker users mailing list, and also provides an issue tracker. | The official site lists Discord as its most direct support channel and also links to a Matrix room. |
Plans
In their own words
CPAchecker
CPAchecker is a configurable software verification tool based on configurable program analysis concepts. It accepts C and SV-LIB inputs, lists predicate analysis for SV-LIB programs, and supports invariants, counterexamples, and proof artifacts. It can also validate termination witnesses in YAML formats 2.1 and 1.0. The project lists a hybrid verification method and provides a self-hosted deployment. CPAchecker is free software under the Apache 2.0 License. Version 4.2.2, released in December 2025, is available as Unix and Windows ZIP archives; Debian and Ubuntu users can install it from the SoSy-Lab APT repository, and a Docker image is available. Java 21 or later is required as of version 4.2. An older version, 1.6.1, can be accessed through a web interface, where some functions are unavailable in the restricted environment. Documentation includes installation instructions, tutorials, and getting-started guidance. Installation questions, bug reports, and suggestions can go to the users mailing list or issue tracker. The project is based in Munich, Germany.
K Framework
K Framework has no write-up on Specifiction yet; its figures are above.