Using UML-B and U2B for formal refinement of digital components


Snook, Colin and Sandstrom, Kim (2003) Using UML-B and U2B for formal refinement of digital components. In, Forum on specification & design languages, Frankfurt, 23 - 26 Sep 2003.

This is the latest version of this item.

Download

[img] PDF
Download (190Kb)

Description/Abstract

In this paper we look at using formal methods to verify the transformation of a digital design from abstract functional specification to bit level implementation. As both authors are in-experienced in formal proof we saw this as a test of the practicality of introducing proof tools in an industrial setting rather than an exemplar of such methods Rigorous verification is desirable in digital design because mistakes can be extremely costly. However, there are drawbacks and barriers to introducing formal notations. Formal notations are abstraction hungry, viscous and require insight, experience and look-ahead. Hence we specialise the UML to alleviate these problems by providing a semi-graphical form of the formal notation B based on existing visual modelling tools. With a small case study, we show the use of B-UML using an event style of modelling to refine a macro level function into a cascade of single bit cells. We attempt to prove the refinement with the assistance of available proof tools but find that the problem is deceptively difficult

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: September 23 - 26, 2003
Keywords: UML, B, formal methods, verification, digital design
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Electronic & Software Systems
ePrint ID: 258712
Date Deposited: 05 Jan 2004
Last Modified: 27 Mar 2014 20:01
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/258712

Available Versions of this Item

Actions (login required)

View Item View Item

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics