Lower Bounds for Possibly Divergent Probabilistic Programs

Author:

Feng Shenghua1ORCID,Chen Mingshuai2ORCID,Su Han1ORCID,Kaminski Benjamin Lucien3ORCID,Katoen Joost-Pieter4ORCID,Zhan Naijun1ORCID

Affiliation:

1. Institute of Software at Chinese Academy of Sciences, China / University of Chinese Academy of Sciences, China

2. Zhejiang University, China

3. Saarland University, Germany / University College London, UK

4. RWTH Aachen University, Germany

Abstract

We present a new proof rule for verifying lower bounds on quantities of probabilistic programs. Our proof rule is not confined to almost-surely terminating programs -- as is the case for existing rules -- and can be used to establish non-trivial lower bounds on, e.g., termination probabilities and expected values, for possibly divergent probabilistic loops, e.g., the well-known three-dimensional random walk on a lattice.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

European Research Council

HORIZON EUROPE Marie Sklodowska-Curie Actions

Publisher

Association for Computing Machinery (ACM)

Subject

Safety, Risk, Reliability and Quality,Software

Reference102 articles.

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2. Alejandro Aguirre , Gilles Barthe , Justin Hsu , Benjamin Lucien Kaminski , Joost-Pieter Katoen , and Christoph Matheja . 2021 . A Pre-Expectation Calculus for Probabilistic Sensitivity . Proc. ACM Program. Lang., 5, POPL (2021), 1–28. Alejandro Aguirre, Gilles Barthe, Justin Hsu, Benjamin Lucien Kaminski, Joost-Pieter Katoen, and Christoph Matheja. 2021. A Pre-Expectation Calculus for Probabilistic Sensitivity. Proc. ACM Program. Lang., 5, POPL (2021), 1–28.

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