Download:
|
by Steve Easterbrook, John Callahan
http://research.ivv.nasa.gov/docs/techreports/1996/NASA-IVV-96-007.ps
Add To MetaCart
Abstract:
This paper describes our work exploring the suitability of formal specification methods for independent verification and validation (IV&V) of software specifications for large, safety critical systems. An IV&V contractor often has to perform rapid analysis on incomplete specifications, with no control over how those specifications are represented. Lightweight formal methods show significant promise in this context, as they offer a way of uncovering major errors, without the burden of full proofs of correctness. We describe an experiment in the application of the method SCR to testing for consistency properties of a partial model of the requirements for Fault Detection Isolation and Recovery on the space station. We conclude that the insights gained from formalizing a specification is valuable, and it is the process of formalization, rather than the end product that is important. It was only necessary to build enough of the formal model to test the properties in which we were interested. Maintenance of fidelity between multiple representations of the same requirements (as they evolve) is still a problem, and deserves further study.
Citations
|
99
|
An international survey of industrial applications of formal methods; volume 1: Purpose, approach, analysis and conclusions; volume 2: Case studies
– Craigen, Gerhart, et al.
- 1993
|
|
97
|
Consistency Checking of SCR-Style Requirements Specifications
– Heitmeyer, Labaw, et al.
- 1995
|
|
91
|
Using ViewPoints for Inconsistency Management
– Easterbrook, Nuseibeh
- 1996
|
|
73
|
SCR*: A toolset for specifying and analyzing requirements
– Heitmeyer, Bull, et al.
- 1995
|
|
64
|
Handling Conflict between Domain Descriptions with Computer-Supported Negotiation
– Easterbrook
- 1991
|
|
61
|
N.: Completeness and Consistency Analysis of State-Based Requirements
– Heimdahl, Leveson
- 1995
|
|
55
|
Formal Methods Reality Check: Industrial Usage
– Craigen, Gerhart, et al.
- 1995
|
|
47
|
The Experience Factory and its Relationship to Other Improvement Paradigms
– Basili
- 1993
|
|
39
|
and Bashar Nuseibeh, “Managing inconsistencies in an evolving specification
– Easterbrook
- 1995
|
|
23
|
Independent Verification and Validation: A Life Cycle Engineering Process for Quality Software
– Lewis
- 1992
|
|
19
|
An approach to verification and validation of a reliable multicast protocol
– Callahan, Montgomery
- 1996
|
|
17
|
An invitation to formal methods
– Bowen, Butler, et al.
- 1996
|
|
10
|
Analyzing tabular and statetransition specifications in PVS
– Owre, Rushby, et al.
- 1995
|
|
9
|
Elements of Style: Analysing a software design with a counter-example detector
– Jackson, Damon
- 1996
|
