VST 2021 4th International Workshop on Validation, Analysis and Evolution of Software Tests March 9, 2021 - co-located with SANER 2021, Virtual Conference https://vst2021.scch.at/ ******************************************************************************* Software projects accumulate large sets of test cases, encoding valuable expert knowledge about the software under test to the extent of many person years. Over time the reliability of the tests decreases, and they become difficult to understand and maintain. Extra effort is required for repairing broken tests and for adapting test suites and models to evolving software systems. The International Workshop on Validation, Analysis and Evolution of Software Tests (VST) is a unique event bringing together academics, industrial researchers, and practitioners for exchanging experiences, solutions and new ideas in applying methods, techniques and tools from software analysis, evolution and re-engineering to advance the state of the art in test development and maintenance. Topics of interest include, but are not limited to: * Test minimization and simplification * Fault localization and automated repair * Change analysis for software tests * Test visualization and validation * Documentation analysis * Bug report analysis * Test evolution * Test case generation * Model-based testing * Combinations of the topics above Submission: We encourage submission of papers on the topics mentioned above: Full papers (8 pages maximum), position papers and tool demonstration papers (2 to 4 pages maximum). Papers must conform to the IEEE proceedings paper format guidelines. If the paper is accepted, at least one author must attend the workshop and present the paper. Accepted papers will be published in the IEEE Digital Library along with the SANER proceedings. Submission is done via EasyChair (https://easychair.org/conferences/?conf=vst2021). Important dates: Paper submission deadline: December 21, 2020 AoE (extended!) Notification of acceptance: January 05, 2020 Camera-ready version due: January 12, 2021 Program chairs: Rudolf Ramler, Software Competence Center Hagenberg, Austria Christian Macho, University of Klagenfurt, Austria Martin Pinzger, University of Klagenfurt, Austria