This volume contains the refereed joint proceedings of two initiatives that have been devoted to the formal foundations of complex systems: the workshops WS-FM:FASOCC 2014 and WS-FM/BEAT 2015. The 11th International Workshop on Web Services and Formal Methods: Formal Aspects of Services-Oriented and Cloud Computing, WS-FM 2014, took place in Eindhoven, The Netherlands, in September 2014. The 12th International Workshop on Web Services, Formal Methods, and Behavioral Types, WS-FM 2015, took place in Madrid, Spain, in September 2015. The total of 8 papers presented in this volume was carefully reviewed and selected from 18 submissions. They were organized in topical sections named: expressiveness of behavioral models; service-oriented systems, and behavioral types.

This volume contains the papers presented at WS-FM 2007, the 4th International Workshop on Web Services and Formal Methods, held on September 28 and 29, 2007 in Brisbane, Australia. Web service technology aims at empowering providers of services, in the broad sense, with the ability to package and deliver their services by means of software applications available on the Web. Existing infrastructures for Web services - ready enable providers to describe services in terms of structure, access policy and behaviour, to locate services, to interact with them, and to bundle simpler services into more complex ones. However, innovations are needed to seamlessly extend this technology in order to deal with challenges such as managing int- actions with stateful and long-running Web services, managing large numbers of Web services each with multiple interfaces and versions, managing the quality of Web service delivery, etc. Formal methods have a fundamental role to play in shaping innovations in Web service technology. For instance, formal methods help to de?ne and to understand the semantics of languages and protocols that underpin existing infrastructures for Web services, and to formulate features that are found to be lacking. They also provide a basis for reasoning about Web service behaviour, for example to discover individual services that can ful?l a given goal, or even to compose multiple services that can collectively ful?l a goal. Finally, formal analysis of security properties and performance are relevant in many application areas of Web services such as e-commerce and e-business.

This book presents papers from the lectures of leading researchers given at the Ninth International School on Formal Methods for the Design of Computer, Communication and Software Systems, SFM 2009, which was devoted to formal methods for web services.

Here are the refereed proceedings of the Third International Workshop on Web Services and Formal Methods, WS-FM 2006, held in conjunction with the Fourth International Conference on Business Process Management, BPM 2006. The book presents 15 revised full papers and 3 invited lectures covering such topics as protocols and standards for WS; languages and description methodologies for Coreography/Orchestration/Workflow; coordination techniques for WS; security, performance evaluation and quality of service, and more.

This book constitutes the thoroughly refereed post-workshop proceedings of the 6th International Workshop on Web Services and Formal Methods, WS-FM 2009, held in Bologna, Italy, in September 2009. The 10 revised full papers presented together with one invited paper were carefully reviewed and selected from 18 submissions. The papers feature topics such as approaches to analyzing and designing systems based on Web Service technology, formal approaches to enterprise systems modeling in general, and business process modeling in particular.

This book constitutes the refereed proceedings of the 8th International Conference on Formal Engineering Methods, ICFEM 2006, held in Macao, China, in November 2006. The 38 revised full papers presented together with three keynote talks were carefully reviewed and selected from 108 submissions. The papers address all current issues in formal methods and their applications in software engineering.

This book constitutes revised selected papers from the workshopscollocated with the SEFM 2015 conference on Software Engineering andFormal Methods, held in York, UK, in September 2015.The 25 papers included in this volume were carefully reviewed and selected from 32 submissions. The satellite workshops provided a highly interactive and collaborative environment for researchers and practitioners from industry and academia to discuss emerging areas of software engineering and formal methods.The four workshops were: ATSE 2015: The 6th Workshop on Automating Test Case Design, Selection and Evaluation; HOFM 2015: The 2nd Human-Oriented Formal Methods Workshop; MoKMaSD 2015: The 4th International Symposium on Modelling and Knowledge Management Applications: Systems and Domains; VERY*SCART 2015: The 1st International Workshop on the Art of Service Composition and Formal Verification for Self-* Systems.

This book constitutes the refereed proceedings of the 10th International Conference on Integrated Formal Methods, IFM 2013, held in Turku, Finland, in June 2013. The 25 revised full papers presented together with 4 invited papers were carefully reviewed and selected from 84 full paper submissions. The papers cover the spectrum of integrated formal methods, focusing on refinement, integration, translation, verification, reachability and model checking, usability and testing, distributed systems, semantics, and system-level analysis.

All modern industries rely on large and complex software systems. In order to construct such large systems in a systematic manner, the focus of the development methodologies has switched in the last two decades from functional to structural issues. Formal methods have been applied successfully to the verification of medium-sized programs in protocol and hardware design. However, their application to the development of large systems requires a greater emphasis on specification, modeling, and validation techniques supporting the concepts of reusability and modifiability, and their implementation in new extensions of existing programming languages like Java. This state-of-the-art survey presents the outcome of the 7th Symposium on Formal Methods for Components and Objects, held in Sophia Antipolis, France, in October 2008. The volume contains 14 revised contributions submitted after the symposium by speakers from each of the following European IST projects: the IST-FP7 project COMPAS on compliance-driven models, languages, and architectures for services; the IST-FP6 project CREDO on modelling and analysis of evolutionary structures for distributed services; the IST-FP7 DEPLOY on industrial deployment of advanced system engineering methods for high productivity and dependability; the IST-FP6 project GridComp on grid programming with components; and the IST-FP6 project MOBIUS aiming at developing the technology for establishing trust and security for the next generation of global computers, using the proof carrying code paradigm.

This book constitutes the thoroughly refereed post-proceedings of the First International Symposium on Leveraging Applications of Formal Methods, ISoLA 2004, held in Paphos, Cyprus in October/November 2004. The 12 revised full papers discuss issues related to the adoption and use of rigorous tools and methods for the specification, analysis, verification, certification, construction, test, and maintenance of systems.