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Refinable record structures in formal methods

Refinable record structures in formal methods
Refinable record structures in formal methods
State-based formal specifications benefit from data structuring mechanisms, which collate associated properties and efficiently declare complex types. For example, ‘record’ data structures, similar to those used in programming languages, can be built into the concrete syntax of a language as an enhancement over flat data relationships. While this is relatively simple to achieve for a single-level specification, it becomes significantly more involved when the specification language allows for progressive refinement of the data supporting the specification. Individual fields may be added to create sub-records within a refinement and replaced to create refined records during a refinement step. The impact on the ability to verify invariant and refinement proof obligations must be considered. Here we describe a record structuring syntax that includes notions of extension and inheritance that can be used in a refinement based formal method. We illustrate the approach using extensions to the Event-B formal method
Salehi Fathabadi, Asieh
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Snook, Colin
b2055316-9f7a-4b31-8aa1-be0710046af2
Hoang, Thai Son
dcc0431d-2847-4e1d-9a85-54e4d6bab43f
Dghaym, Dana
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Butler, Michael
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Salehi Fathabadi, Asieh
b799ee35-4032-4e7c-b4b2-34109af8aa75
Snook, Colin
b2055316-9f7a-4b31-8aa1-be0710046af2
Hoang, Thai Son
dcc0431d-2847-4e1d-9a85-54e4d6bab43f
Dghaym, Dana
b7b69fe2-c9ff-43ad-a6ba-8b41d6fd19fc
Butler, Michael
54b9c2c7-2574-438e-9a36-6842a3d53ed0

Salehi Fathabadi, Asieh, Snook, Colin, Hoang, Thai Son, Dghaym, Dana and Butler, Michael (2021) Refinable record structures in formal methods. The International Workshop DETECT 2021. 13 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

State-based formal specifications benefit from data structuring mechanisms, which collate associated properties and efficiently declare complex types. For example, ‘record’ data structures, similar to those used in programming languages, can be built into the concrete syntax of a language as an enhancement over flat data relationships. While this is relatively simple to achieve for a single-level specification, it becomes significantly more involved when the specification language allows for progressive refinement of the data supporting the specification. Individual fields may be added to create sub-records within a refinement and replaced to create refined records during a refinement step. The impact on the ability to verify invariant and refinement proof obligations must be considered. Here we describe a record structuring syntax that includes notions of extension and inheritance that can be used in a refinement based formal method. We illustrate the approach using extensions to the Event-B formal method

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Published date: 2021
Venue - Dates: The International Workshop DETECT 2021, 2021-06-21

Identifiers

Local EPrints ID: 449859
URI: http://eprints.soton.ac.uk/id/eprint/449859
PURE UUID: 19589c2a-c096-41e1-923b-ab15bb51cb5f
ORCID for Colin Snook: ORCID iD orcid.org/0000-0002-0210-0983
ORCID for Thai Son Hoang: ORCID iD orcid.org/0000-0003-4095-0732
ORCID for Dana Dghaym: ORCID iD orcid.org/0000-0002-2196-2749
ORCID for Michael Butler: ORCID iD orcid.org/0000-0003-4642-5373

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Date deposited: 23 Jun 2021 16:30
Last modified: 24 Jun 2021 01:51

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Contributors

Author: Asieh Salehi Fathabadi
Author: Colin Snook ORCID iD
Author: Thai Son Hoang ORCID iD
Author: Dana Dghaym ORCID iD
Author: Michael Butler ORCID iD

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