Dione is a formal modeling framework to specify distributed protocols based on Input/Output automata. In addition, we are also developing a (mostly) automated verification engine using Dafny program verifier.

Dione itself is a pure Python package and requires Python 3.7 or higher. It uses Dafny as the verification engine and interacts with Dafny through shell pipelines. We recommend users to use binary release of Dafny for Windows operating system. Linux users can refer to installation for Dafny and install necessary dependencies for Dafny.

Before running Dione, please change the path to the DafnyServer.exe in setup.cfg. For example,

[dione]
dafny_server = C:\\path\to\DafnyServer.exe

To run Dione in commandline, please run

$ python -m dione path\to\ioa_file.py

See Language Reference

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Dione is licensed under the University of Illinois/NCSA Open Source License. See LICENSE for details.