Chapter 5: The Vital Processor Interlocking

AbstractThis document is one of the parts of the electronic version of the PhD thesis by S.F.M. van Vlijmen [53]. The goal of the PhD project was to get a better understanding of the problems with the integration of formal specification technique in the day to day software practice. The approach followed was to execute a number of projects in cooperation with industry on realistic cases.This document reports on the modelling of a railway safety and control system in μCRL, the specification of set of practically relevant safety criteria in the modal logic for μCRL. Next, the means for verification of the criteria on the model are discussed. Reported is on tests of the verification of a small number of critera on a model of an actual safety system. Finally, the case study is evaluated