Multi-Agent Safety Verification using Symmetry Transformations

Hussein Sibai; Navid Mokhlesi; Chuchu Fan; Sayan Mitra

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arXiv · 1911.00608

Multi-Agent Safety Verification using Symmetry Transformations

Hussein Sibai·Navid Mokhlesi·Chuchu Fan·Sayan Mitra

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Abstract

We show that symmetry transformations and caching can enable scalable, and possibly unbounded, verification of multi-agent systems. Symmetry transformations map solutions and to other solutions. We show that this property can be used to transform cached reachsets to compute new reachsets, for hybrid and multi-agent models. We develop a notion of virtual system which define symmetry transformations for a broad class of agent models that visit waypoint sequences. Using this notion of virtual system, we present a prototype tool CacheReach that builds a cache of reachtubes for this system, in a way that is agnostic of the representation of the reachsets and the reachability analysis subroutine used. Our experimental evaluation of CacheReach shows up to 66% savings in safety verification computation time on multi-agent systems with 3-dimensional linear and 4-dimensional nonlinear fixed-wing aircraft models following sequences of waypoints. These savings and our theoretical results illustrate the potential benefits of using symmetry-based caching in the safety verification of multi-agent systems.

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BibTeX RIS

Hussein Sibai, Navid Mokhlesi, Chuchu Fan, Sayan Mitra. 2019-11-01. Multi-Agent Safety Verification using Symmetry Transformations. https://arxiv.org/abs/1911.00608

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