Salvato in:
| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2509.17739 |
| Tags: |
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Sommario:
- We present a fully automatic framework for synthesising compact, finite-state deterministic abstractions of deterministic, continuous-state autonomous systems under locally specified resolution requirements. Our approach builds on multi-resolution approximate bisimulations, a generalisation of classical $ε$-approximate bisimulations, that support state-dependent error bounds and subsumes both variable- and uniform-resolution relations. We show that some systems admit multi-resolution bisimulations but no $ε$-approximate bisimulation. We prove the existence of multi-resolution approximately bisimilar abstractions for all incrementally uniformly bounded ($δ$-UB) systems, thereby broadening the applicability of symbolic verification to a larger class of dynamics; as a trivial special case, this result also covers incrementally globally asymptotically stable ($δ$-GAS) systems. The Multi-resolution Abstraction Synthesis Problem (MRASP) is solved via a scalable Counterexample-Guided Inductive Synthesis (CEGIS) loop, combining mesh refinement with counterexample-driven refinement. This ensures soundness for all $δ$-UB systems, and ensures termination in certain special cases. Experiments on linear and nonlinear benchmarks, including non-$δ$-GAS and non-differentiable cases, demonstrate that our algorithm yields abstractions up to 50\% smaller than Lyapunov-based grids while enforcing tighter, location-dependent error guarantees.