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UTC Time, Formally Verified

Ana de Almeida Borges, Mireia González Bedmar, Juan Conejero Rodríguez, Eduardo Hermo Reyes, Joaquim Casals Buñuel +1 morePublished Jan 9, 2024
DOI Publisher
Researcher verdict
Context only
Use as context only
Benchmark evidence
Missing
Not verified yet
Time to first repro
A few days
Plan setup time
Risk flags
2
Review before use

Abstract

Domain fit: Niche / domain-specific · No strong AI-core implementation/artifact signals were detected from current providers.

FV Time is a small-scale verification project developed in the Coq proof\nassistant using the Mathematical Components libraries. It is a library for\nmanaging conversions between time formats (UTC and timestamps), as well as\ncommonly used functions for time arithmetic. As a library for time conversions,\nits novelty is the implementation of leap seconds, which are part of the UTC\nstandard but usually not implemented in existing libraries. Since the verified\nfunctions of FV Time are reasonably simple yet non-trivial, it nicely\nillustrates our methodology for verifying software with Coq.\n In this paper we present a description of the project, emphasizing the main\nproblems faced while developing the library, as well as some general-purpose\nsolutions that were produced as by-products and may be used in other\nverification projects. These include a refinement package between\nproof-oriented MathComp numbers and computation-oriented primitive numbers from\nthe Coq standard library, as well as a set of tactics to automatically prove\ncertain decidable statements over finite ranges through brute-force\ncomputation.\n

Results and benchmarks

Freshness tier: cold
FV Time is a small-scale verification project developed in the Coq proof\nassistant using the Mathematical Components libraries.

Implementation

No direct implementation yet

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Implementation evidence summary
Confidence: low

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Reproduction risks
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Reproduction readiness

Time to first repro: days
Last checked: Aug 24, 2026

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Hardware requirements

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Research context

2

Citations

38

References

Tasks

Computer science, Timestamp, Novelty, Programming language, Simple (philosophy), Software, Theoretical computer science

Methods

None detected

Domains

Artificial Intelligence

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Computer science Timestamp Novelty Programming language Simple (philosophy) Software