Formal methods and tools for industrial critical systems

Formal methods and tools have become well established and widely applied to ensure the correctness of fundamental components of industrial critical systems in domains like railways, avionics and automotive. In this Introduction to the special issue, we outline a number of recent achievements concerning the use of formal methods and tools for the specification and verification of critical systems from a variety of industrial domains. These achievements are represented by four properly revised and extended versions of papers that were selected from the 26^th International Conference on Formal Methods for Industrial Critical Systems (FMICS 2021).