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arXiv · 2603.23878

The Luna Bound Propagator for Formal Analysis of Neural Networks

Henry LeCates·Haoze Wu
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Abstract

The parameterized CROWN analysis, a.k.a., alpha-CROWN has emerged as a practically successful abstract interpretation method for neural network verification. However, existing implementations of alpha-CROWN are limited to Python, which complicates integration into existing DNN verifiers and long-term production-level systems. We introduce Luna, a new abstract-interpretation-based bound propagator implemented in C++. Luna supports Interval Bound Propagation, the DeepPoly/CROWN analysis, and the alpha-CROWN analysis over a general computational graph. We describe the architecture of Luna and show that it outperforms the state-of-the-art alpha-CROWN implementation in terms of both bound tightness and computational efficiency on supported benchmarks from VNN-COMP 2025. Luna is publicly available at https://github.com/ai-ar-research/luna.

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Henry LeCates, Haoze Wu. 2026-03-25. The Luna Bound Propagator for Formal Analysis of Neural Networks. https://arxiv.org/abs/2603.23878

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