Augusto Sampaio – författare

This volume contains papers presented at UTP 2019, the 7th International Symposium on Unifying Theories of Programming, held in Porto, Portugal, on the 8th of October 2019. This edition of the UTP symposium is in honor of Sir Tony Hoare, on the occasion of his 85th birthday. The papers contained in this volume were invited, and friendly refereed, original contributions sought from the UTP community. One of the papers is from the distinguished invited speaker Tony Hoare himself. Nine other additional papers compose this volume, covering several aspects of Unifying Theories of Programming.

This Festschrift, dedicated to Jim Woodcock, contains papers written by many of his closest collaborators.

After a PhD on software verification at the University of Liverpool, Jim has combined a successful career in academia with outstanding industry research, in particular he has been a pioneer in applying mathematical modelling approaches in critical industries. At GEC''s Hirst Research Centre he worked on a novel distributed telephone exchange and a service specification of a PABX exchange. In Oxford he collaborated with IBM Hursley Laboratories on modelling of the CICS transaction processing system, one of the most significant software systems ever. As part of the UK government''s cybersecurity strategy, he used Z techniques to develop secure office automation systems and a secure version of UNIX. He worked with the Smith Institute and BR Research to verify the safety of railway signalling systems, approaches developed further in safety-critical control systems for the UK Nuclear Installation Inspectorate and British Energy. He provided a technically complete theory of correctness for Z, verifying its soundness from first principles, and completed the verification of Mondex, a smartcard-based electronic cash system, the first application of a general theory of program correctness to an industrial product. He coordinated the experimental work of the Verified Software Initiative, an international grand challenge. More recently he extended the collection of standard Unifying Theories of Programming (UTP) with work on object orientation and hybrid systems. Currently he is working on a UTP theory of probabilistic programs with application to robotics.

Jim has been a lecturer, research fellow, reader and professor at the University of Surrey, the University of Oxford, the University of Kent, and since 2004 the University of York, and he is a visiting professor at the Federal University of Pernambuco and Trinity College Dublin. He is a Fellow of the Royal Academy of Engineering, the British Computer Society, and the Formal Methods Europe association, and he was part of the team that won the Queen’s Award for Technological Achievement in 1992. He is the Editor-in-Chief of the ACM journal Formal Aspects of Computing, he has chaired major related academic conferences, and he has contributed to CCITT and Z ISO international standards.

Throughout all these activities, Jim has been a guide and inspiration to colleagues and students, and collaborated successfully with researchers in the UK, Brazil, China, France, USA, Ireland, and Singapore. Many of these researchers show in their contributions to this volume the ongoing impact of his work.

This book constitutes the refereed proceedings of the 13th International Colloquium on Theoretical Aspects of Computing, ICTAC 2016, held in Taipei, Taiwan, in October 2016.

The 23 revised full papers presented together with two short papers, two invited papers and one abstract of an invited paper were carefully reviewed and selected from 60 submissions. The papers are organized in topical sections on program verification; design, synthesis and testing; calculi; specifications; composition and transformation; automata; temporal logics; tool and short papers.