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arXiv · 2603.17293

STLts-Div: Diversified Trace Synthesis from STL Specifications Using MILP (Extended Version)

Martin Jouve-Genty·Han Su·Sota Sato·Jie An·Zhenya Zhang·Ichiro Hasuo
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Abstract

Modern cyber-physical systems are complex, and requirements are often written in Signal Temporal Logic (STL). Writing the right STL is difficult in practice; engineers benefit from concrete executions that illustrate what a specification actually admits. Trace synthesis addresses this need, but a single witness rarely suffices to understand intent or explore edge cases - diverse satisfying behaviors are far more informative. We introduce diversified trace synthesis: the automatic generation of sets of behaviorally diverse traces that satisfy a given STL formula. Building on a MILP encoding of STL and system model, we formalize three complementary diversification objectives - Boolean distance, random Boolean distance, and value distance - all captured by an objective function and solved iteratively. We implement these ideas in STLts-Div, a lightweight Python tool that integrates with Gurobi.

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Martin Jouve-Genty, Han Su, Sota Sato, Jie An, Zhenya Zhang, Ichiro Hasuo. 2026-03-18. STLts-Div: Diversified Trace Synthesis from STL Specifications Using MILP (Extended Version). https://arxiv.org/abs/2603.17293

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