UPPAAL

UPPAAL is ranked #8 of 33 in formal verification tools on Freedom251. It runs on Linux, macOS, Windows. There is a free plan.

UPPAAL plans and pricing

All plans

Academic license Free Free for eligible non-commercial academic use Researchers or students at degree-granting academic institutions · Work and worker must not be contracted by a non-academic institution uppaal.org · 3 Oct 2026

Commercial license Not published Contact VeriAal for commercial licensing and support Required for company use, private use, national research agency use, and other non-academic use uppaal.org · 3 Oct 2026

Compared on formal verification tools

Free plan: Yes
Verification method: model-checking
Supported formalisms: invariants
Counterexamples: Yes
Input languages: UPPAAL timed-automata modeling language
Deployment: self-hosted

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UPPAAL

Purpose: UPPAAL is an integrated environment for modeling, simulation, and verification of real-time systems represented as networks of timed automata.
Modeling: Its description language supports clock and data variables, including bounded integers and arrays, in networks of automata.
Verification: The model checker checks invariant and reachability properties through symbolic state-space exploration and can generate diagnostic traces.
Statistical analysis: The Statistical Model Checking engine can estimate probabilities, compare a probability with a value, and compare two probabilities.
Strategy analysis: UPPAAL Stratego supports generation, optimization, comparison, and performance exploration of strategies for stochastic priced timed games.
Additional tools: The site lists related tools and extensions including CORA, TRON, TIGA, ECDAR, and COSHY for cost-optimal analysis, testing, timed games, refinement, and hybrid-system control.
Use cases: The site identifies real-time controllers and communication protocols with timing-critical behavior as typical application areas.
Desktop platforms: The current download page provides packages for Windows, macOS, and Linux, including macOS x86_64 and Aarch64 packages.
Runtime requirement: The graphical interface requires Java version 17 or later, while the verifyta command-line utility can be used without Java.
License access: The downloads page says users must register to obtain a free academic license key and that UPPAAL needs an internet connection to fetch the license.
Support: Academic support is community-based, with documentation, discussions, mailing lists, and Stack Overflow; the team says it may be unable to answer all direct requests.
Development: UPPAAL was created through collaboration between Uppsala University and Aalborg University and is maintained by Aalborg University's Distributed, Embedded and Intelligent Systems group.
Founded: 1995
Price from: Free

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Best Formal Verification Tools in 2026#8 of 33

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Sources

uppaal.org/features/· checked 3 Oct 2026
uppaal.org/downloads/· checked 3 Oct 2026
uppaal.org/contact/· checked 3 Oct 2026
uppaal.org/team/· checked 3 Oct 2026
uppaal.org· checked 28 Sept 2026