Dezyne-IDE 2.14.0 released

December 06, 2021

We are delighted to announce Dezyne-IDE 2.14.

This release introduces implicit interface illegals: Specifying illegal in an interface is now optional, similar to components.

Dezyne now also has implicit temporary variables: a single valued action or call can now be used in if and reply expressions.

Simplified (filtered) state diagrams can now be generated by using the new --hide and --remove options on ide state.

In the state view, selecting a node highlights all directly reachable nodes, improving the navigation of large models. Pressing . highlights the initial state.

In the trace view, the beginning of a livelock error is now marked with <loop>.

The Dezyne core is now released as free and open source software, see

We will evaluate your reports and track them via the Gitlab dezyne-issues project, see our guide to writing helpful bug reports.

What's next?

Full blocking support and verification with system scope. Introducing a new keyword defer for asynchronous behavior and deprecation of async.


Looking beyond the next releases we will introduce implicit interface constraints. Hierarchical behaviors, module-specifications and data-interfaces. Support for Model Based Testing.

The Verum Team.


Here are the binary downloads:
dezyne-ide-2.14.0-x86_64-linux.tar.gz (85MB) (136MB)


Changes in 2.14.0 since 2.13.3

For changes in the Dezyne core see Dezyne core release 2.14.0.

About Dezyne-IDE

The Dezyne-IDE is a commercial product by, created especially for the demanding, or the professional Dezyne developer. The Dezyne-IDE is built around the FLOSS command-line version of Dezyne: While the Dezyne-IDE is a must for any productive developer, it is "only" a convenience; because all core dezyne tools are free and open source software, there is never any chance of vendor lock-in. Also, by buying the Dezyne-IDE, you get support on Dezyne and are sponsoring the development of the Dezyne command-line tools.

About Dezyne

Dezyne is a programming language and a set of tools to specify, validate, verify, simulate, document, and implement concurrent control software for embedded and cyber-physical systems.

The Dezyne language has formal semantics expressed in mCRL2 developed at the department of Mathematics and Computer Science of the Eindhoven University of Technology (TUE). Dezyne requires that every model is finite, deterministic and free of deadlocks, livelocks, and contract violations. This achieved by means of the language itself as well as builtin verification through model checking. This allows the construction of complex systems by assembling independently verified components.

Dezyne is free software, it is distributed under the terms of the GNU Affero General Public Licence version 3 or later.

About Verum, the organization behind the Dezyne language, is committed to continuing to invest in the language for the benefit of all its users. Verum assists its customers and partners in solving the software challenges of today and tomorrow, by offering expert consultancy on the application of the Dezyne language and the development and use of its tools, as well as on Verum's commercial tools like IDE support based on the LSP (Language Server Protocol), interactive integrated graphics, interactive simulation, (custom) code generation and (custom) runtime library support.