# A Formal Model of Extended Finite State Machines (Extended_Finite_State_Machines)

This git repository contains a local mirror of the 
[Archive of Formal Proofs (AFP)](https://www.isa-afp.org) entry 
[*A Formal Model of Extended Finite State Machines*](https://www.isa-afp.org/entries/Extended_Finite_State_Machines.html).

The official AFP releases are tagged. Additionally, this repository
may contain extensions (i.e., a development version) that may be
submitted, as an update to the existing entry, at a later point in time.

## How to build

```console
achim@logicalhacking:~$ isabelle build -D Extended_Finite_State_Machines-devel
```

## Authors

* Michael Foster
* [Achim D. Brucker](http://www.brucker.ch/)
* Ramsay G. Taylor
* John Derrick

## License

This project is licensed under a 3-clause BSD-style license.

SPDX-License-Identifier: BSD-3-Clause

## Upstream Repository

The upstream git repository, i.e., the single source of truth, for this project is hosted 
by the [Software Assurance & Security Research Team](https://logicalhacking.com) at
<https://git.logicalhacking.com/afp-mirror/Extended_Finite_State_Machines>.

## Publications

* Michael Foster, Ramsay G. Taylor, Achim D. Brucker, and John Derrick. 
  Formalising Extended Finite State Machine Transition Merging. In ICFEM. 
  Lecture Notes in Computer Science (11232), pages 373-387, Springer-Verlag, 
  2018, [doi:10.1007/978-3-030-02450-5](https://doi.org/10.1007/978-3-030-02450-5).
  <https://www.brucker.ch/bibliography/abstract/foster.ea-efsm-2018>