This book constitutes the proceedings of the 12th International Conference on Verification and Evaluation of Computer and Communication Systems ( VECoS 2018) held at Grenoble, France, in September 2018. The 11 full papers in this volume, presented together with one abstract and two invited papers, were carefully reviewed and selected from 23 submissions. The aim of the VECoS conference is to bring together researchers and practitioners in the areas of verification, control, performance, and dependability evaluation in order to discuss state of the art and challenges in modern computer and communication systems in which functional and extra-functional properties are strongly interrelated. Thus, the main motivation for VECoS is to encourage the cross-fertilization between various formal verification and evaluation approaches, methods and techniques, and especially those developed for concurrent and distributed hardware/software systems.

This book constitutes the refereed proceedings of the 4th International Conference on Runtime Verification, RV 2013, held in Rennes, France, in September 2013. The 24 revised full papers presented together with 3 invited papers, 2 tool papers, and 6 tutorials were carefully reviewed and selected from 58 submissions. The papers address a wide range of specification languages and formalisms for traces; specification mining; program instrumentation; monitor construction techniques; logging, recording, and replay; fault detection, localization, recovery, and repair; program steering and adaptation; as well as metrics and statistical information gathering; combination of static and dynamic analyses and program execution visualization.

The RV series of workshops brings together researchers from academia and - dustry that are interested in runtime veri?cation. The goal of the RV workshops is to study the ability to apply lightweight formal veri?cation during the exe- tion of programs. This approach complements the o?ine use of formal methods, which often use large resources. Runtime veri?cation methods and tools include the instrumentation of code with pieces of software that can help to test and monitor it online and detect, and sometimes prevent, potential faults. RV 2009 was held during June 26-28 in Grenoble, adjacent to CAV 2009. The program included 11 accepted papers. Two invited talks were given by AmirPnueli,on"CompositionalApproachtoMonitoringLinearTemporalLogic Properties" and Sriram Rajamani on "Veri?cation, Testing and Statistics." The program also included three tutorials. We would like to thank the members of the Program Committee and ad- tional referees for the reviewing and participation in the discussions.

"From Programs to Systems - The Systems Perspective in Computing" workshop (FPS 2014) was held in honor of Professor Joseph Sifakis in the framework of the 16th European Joint Conferences on Theory and Practice of Software, ETAPS, in Grenoble, April 2014. Joseph Sifakis is an active and visionary researcher in the area of system design. He believes that endowing design with scientific foundations is at least of equal importance as the quest for scientific truth in natural sciences. Previously, he has worked on Petri nets, concurrent systems, program semantics, verification, embedded systems, real-time systems, and formal methods more generally. The book contains 18 papers covering various topics related to the extension of programming theory to systems.