Preface

The papers in this collection came out of work and ideas presented and discussed at a workshop co-located with EICS 2013, the 5th ACM SIGCHI Symposium on Engineering InteractiveComputing Systems, held at CityUniversity, London, UK in June 2013. As for the four previous editions, this fifth edition of the International Workshop on Formal Methods for Interactive Systems (FMIS 2013) is a forum for the presentation and discussion of research into the interface between formal methods and interactive system design. As we see, small medical devices have become something of a theme in much current work. This is unsurprising since they are clearly safety critical, and they are also very, very common and the focus of much current concern by licensing bodies like the FDA in the USA. This, then, is a timely set of papers. The paper by Harrison et al. explores how formal techniques can be used, as a better alternative to testing, when comparing the interface properties of two safety critical devices. One important point here is that the analysis, being formalised, can be done systematically on both devices, giving a more uniform comparison of them since it judges them both against the same model. Masci et al. use a case study to explore predictability in the use of medical devices. What counts as predictable is specified formally and then formal techniques and tools are used to automatically show whether or not the devices are, in