No Soundness in the Real World: On the Challenges of the Verification of Deployed Neural Networks

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Main Authors: Szász, Attila, Bánhelyi, Balázs, Jelasity, Márk
Format: Preprint
Published: 2025
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author Szász, Attila
Bánhelyi, Balázs
Jelasity, Márk
author_facet Szász, Attila
Bánhelyi, Balázs
Jelasity, Márk
contents The ultimate goal of verification is to guarantee the safety of deployed neural networks. Here, we claim that all the state-of-the-art verifiers we are aware of fail to reach this goal. Our key insight is that theoretical soundness (bounding the full-precision output while computing with floating point) does not imply practical soundness (bounding the floating point output in a potentially stochastic environment). We prove this observation for the approaches that are currently used to achieve provable theoretical soundness, such as interval analysis and its variants. We also argue that achieving practical soundness is significantly harder computationally. We support our claims empirically as well by evaluating several well-known verification methods. To mislead the verifiers, we create adversarial networks that detect and exploit features of the deployment environment, such as the order and precision of floating point operations. We demonstrate that all the tested verifiers are vulnerable to our new deployment-specific attacks, which proves that they are not practically sound.
format Preprint
id arxiv_https___arxiv_org_abs_2506_01054
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle No Soundness in the Real World: On the Challenges of the Verification of Deployed Neural Networks
Szász, Attila
Bánhelyi, Balázs
Jelasity, Márk
Machine Learning
The ultimate goal of verification is to guarantee the safety of deployed neural networks. Here, we claim that all the state-of-the-art verifiers we are aware of fail to reach this goal. Our key insight is that theoretical soundness (bounding the full-precision output while computing with floating point) does not imply practical soundness (bounding the floating point output in a potentially stochastic environment). We prove this observation for the approaches that are currently used to achieve provable theoretical soundness, such as interval analysis and its variants. We also argue that achieving practical soundness is significantly harder computationally. We support our claims empirically as well by evaluating several well-known verification methods. To mislead the verifiers, we create adversarial networks that detect and exploit features of the deployment environment, such as the order and precision of floating point operations. We demonstrate that all the tested verifiers are vulnerable to our new deployment-specific attacks, which proves that they are not practically sound.
title No Soundness in the Real World: On the Challenges of the Verification of Deployed Neural Networks
topic Machine Learning
url https://arxiv.org/abs/2506.01054