UPPAAL
What it is
UPPAAL is an integrated environment for modeling, simulating, and verifying real-time systems as networks of timed automata. Its language represents clock and data variables, including bounded integers and arrays, within automata networks. The model checker uses symbolic state-space exploration for invariant and reachability properties and can produce diagnostic traces. Statistical Model Checking estimates probabilities, compares a probability with a chosen value, or compares two probabilities. UPPAAL Stratego handles generation, optimization, comparison, and performance exploration of strategies for stochastic priced timed games. Related tools include CORA, TRON, TIGA, ECDAR, and COSHY for cost-optimal analysis, testing, timed games, refinement, and hybrid-system control. Typical applications include timing-critical real-time controllers and communication protocols. Desktop packages support Windows, macOS, and Linux, including macOS x86_64 and Aarch64. The graphical interface needs Java 17 or later; verifyta does not. UPPAAL is self-hosted and requires registration, internet access, and a license key.
For and against
For
- Models clocks, data, bounded integers, and arrays
- Checks invariants and reachability with diagnostic traces
- Estimates and compares probabilities
- Supports Windows, macOS, and Linux
- Includes related analysis and testing tools
Against
- Graphical interface requires Java 17 or later
- Academic license requires registration and internet access
- Commercial pricing is available only on request
- Academic support is community-based
The verdict
UPPAAL combines timed-automata modeling with verification, statistical analysis, and strategy exploration. It is a focused option for real-time-system work, with platform coverage across major desktop systems and distinct academic licensing requirements.
Who it suits
UPPAAL suits researchers and developers working with timing-critical controllers, communication protocols, and other real-time systems. Academic users at degree-granting institutions can use its free non-commercial academic license; other users need commercial licensing.
Plans and prices
Academic license
Researchers or students at degree-granting academic institutions · Work and worker must not be contracted by a non-academic institution
Read 3 Oct 2026 · uppaal.org
Commercial license
Required for company use, private use, national research agency use, and other non-academic use
Read 3 Oct 2026 · uppaal.org
On the record
- 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.uppaal.org · read 3 Oct 2026
- Desktop platforms
- The current download page provides packages for Windows, macOS, and Linux, including macOS x86_64 and Aarch64 packages.uppaal.org · read 3 Oct 2026
- 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.uppaal.org · read 3 Oct 2026
- 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.uppaal.org · read 3 Oct 2026
- Modeling
- Its description language supports clock and data variables, including bounded integers and arrays, in networks of automata.uppaal.org · read 3 Oct 2026
- Purpose
- UPPAAL is an integrated environment for modeling, simulation, and verification of real-time systems represented as networks of timed automata.uppaal.org · read 3 Oct 2026
- Runtime requirement
- The graphical interface requires Java version 17 or later, while the verifyta command-line utility can be used without Java.uppaal.org · read 3 Oct 2026
- Statistical analysis
- The Statistical Model Checking engine can estimate probabilities, compare a probability with a value, and compare two probabilities.uppaal.org · read 3 Oct 2026
- Strategy analysis
- UPPAAL Stratego supports generation, optimization, comparison, and performance exploration of strategies for stochastic priced timed games.uppaal.org · read 3 Oct 2026
- 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.uppaal.org · read 3 Oct 2026
- Use cases
- The site identifies real-time controllers and communication protocols with timing-critical behavior as typical application areas.uppaal.org · read 3 Oct 2026
- Verification
- The model checker checks invariant and reachability properties through symbolic state-space exploration and can generate diagnostic traces.uppaal.org · read 3 Oct 2026
