LiveFMBench: Unveiling the Power and Limits of Agentic Workflows in Specification Generation
Formal specification is essential for rigorous program verification, yet writing correct specifications remains costly and difficult to automate. Although large language models (LLMs) and agents have shown promising progress, their true capabilities and failure modes remain unclear. We present the first systematic and contamination-aware study of LLM- and agent-based formal specification generation for C programs. We introduce LiveFMBench, a continuously evolving benchmark of 630 ACSL (ANSI/ISO C Specification Language)-annotated C programs, including 360 newly collected cases designed to mitigate data leakage. Using this benchmark, we evaluate direct prompting with different sampling siz...
| Authors | Dong Xu, Jialun Cao, Guozhao Mo et al. |
|---|---|
| Primary category | cs.SE |
| Published | 2 May 2026 |
| Last updated at source | 2 May 2026 |
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