Synthesis of Safety Specifications for Probabilistic Systems

Fuente: arXiv
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Autores principales: Ohlmann, Gaspard, Court, Edwin Hamel-De le, Belardinelli, Francesco
Formato: Preprint
Publicado: 2025
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author Ohlmann, Gaspard
Court, Edwin Hamel-De le
Belardinelli, Francesco
author_facet Ohlmann, Gaspard
Court, Edwin Hamel-De le
Belardinelli, Francesco
contents Ensuring that agents satisfy safety specifications can be crucial in safety-critical environments. While methods exist for controller synthesis with safe temporal specifications, most existing methods restrict safe temporal specifications to probabilistic-avoidance constraints. Formal methods typically offer more expressive ways to express safety in probabilistic systems, such as Probabilistic Computation Tree Logic (PCTL) formulas. Thus, in this paper, we develop a new approach that supports more general temporal properties expressed in PCTL. Our contribution is twofold. First, we develop a theoretical framework for the Synthesis of safe-PCTL specifications. We show how the reducing global specification satisfaction to local constraints, and define CPCTL, a fragment of safe-PCTL. We demonstrate how the expressiveness of CPCTL makes it a relevant fragment for the Synthesis Problem. Second, we leverage these results and propose a new Value Iteration-based algorithm to solve the synthesis problem for these more general temporal properties, and we prove the soundness and completeness of our method.
format Preprint
id arxiv_https___arxiv_org_abs_2511_16579
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Synthesis of Safety Specifications for Probabilistic Systems
Ohlmann, Gaspard
Court, Edwin Hamel-De le
Belardinelli, Francesco
Logic in Computer Science
Artificial Intelligence
Machine Learning
Systems and Control
68Q60, 60J20, 68T05
F.3.1; F.4.1; I.2.6
Ensuring that agents satisfy safety specifications can be crucial in safety-critical environments. While methods exist for controller synthesis with safe temporal specifications, most existing methods restrict safe temporal specifications to probabilistic-avoidance constraints. Formal methods typically offer more expressive ways to express safety in probabilistic systems, such as Probabilistic Computation Tree Logic (PCTL) formulas. Thus, in this paper, we develop a new approach that supports more general temporal properties expressed in PCTL. Our contribution is twofold. First, we develop a theoretical framework for the Synthesis of safe-PCTL specifications. We show how the reducing global specification satisfaction to local constraints, and define CPCTL, a fragment of safe-PCTL. We demonstrate how the expressiveness of CPCTL makes it a relevant fragment for the Synthesis Problem. Second, we leverage these results and propose a new Value Iteration-based algorithm to solve the synthesis problem for these more general temporal properties, and we prove the soundness and completeness of our method.
title Synthesis of Safety Specifications for Probabilistic Systems
topic Logic in Computer Science
Artificial Intelligence
Machine Learning
Systems and Control
68Q60, 60J20, 68T05
F.3.1; F.4.1; I.2.6
url https://arxiv.org/abs/2511.16579