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arXiv · 2511.19177

Synthesizing Test Cases for Narrowing Specification Candidates

Alcino Cunha·Nuno Macedo
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Abstract

This paper proposes a technique to help choose the best formal specification candidate among a set of alternatives. Given a set of specifications, our technique generates a suite of test cases that, once classified by the user as desirable or not, narrows down the set of candidates to at most one specification. Two alternative solver-based algorithms are proposed, one that generates a minimal test suite, and another that does not ensure minimality. Both algorithms were implemented in a prototype that can be used generate test suites to help choose among alternative Alloy specifications. Our evaluation of this prototype against a large set of problems showed that the optimal algorithm is efficient enough for many practical problems, and that the non-optimal algorithm can scale up to dozens of candidate specifications while still generating reasonably sized test suites.

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Alcino Cunha, Nuno Macedo. 2025-11-24. Synthesizing Test Cases for Narrowing Specification Candidates. https://arxiv.org/abs/2511.19177

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