CIFMA 2021 - 3rd International Workshop on Cognition: Interdisciplinary Foundations, Models and Applications -- What Does It Mean to Inhibit an Action? A Critical Discussion of Benjamin Libet's Veto in a Recent Study -- Regret from cognition to code -- In Silico Simulations and Analysis of Human Phonological Working Memory Maintenance and Learning Mechanisms with Behavior and Reasoning Description Language (BRDL) -- Fostering safe behaviors via metaphor-based nudging technologies -- Developing the Semantic Web via the Resolution of Meaning Ambiguities -- Original or Fake? How to Understand the Digital Artworks' Value in the Blockchain -- Grounding Psychological Shape Space in Convolutional Neural Networks -- Unexpectedness and Bayes' Rule -- Can reinforcement learning learn itself? A reply to 'Reward is enough' -- CoSim-CPS 2021 - 5th Workshop on Formal Co-Simulation of Cyber-Physical Systems -- Enabling Distributed and Hybrid Digital Twins in the Industry5.0 Cloud Continuum -- Under What Conditions does a Digital Shadow Track a Periodic Linear Physical System? -- Convergence Properties of Hierarchical Co-Simulation Approaches -- Co-simulation-based pre-training of a ship trajectory predictor -- Effect of Ship Propulsion Retrofit on Maneuverability Research Based on Co-simulation -- Co-simulation of a Model Predictive Control System for Automotive Applications -- Running Large-Scale and Hybrid Real-Time Aircraft Simulations in an HLA Framework -- Comparison between the HUBCAP and DIGITBrain Platforms for Model-Based Design and Evaluation of Digital Twin -- OpenCERT 2021 - 10th International Workshop on Open Community approaches to Education, Research and Technology -- A Life-long Learning Education Passport powered by Blockchain Technology and Verifiable Digital Credentials: The BlockAdemiC Project -- Open Source Discovery, Adoption, and Use: an Informal Perspective -- DrPython-WEB: a tool to help teaching well-written Python programs -- Formal Methods Communities of Practice: A Survey of Personal Experience -- Learning from Mistakes in an Open Source Software Course -- ASYDE 2021 - 3rd International Workshop on Automated and verifiable Software sYstem DEvelopment -- A Probabilistic Model Checking Approach to Self-Adapting Machine Learning Systems -- Integration of COTS Processing Architectures in Small Satellites for Onboard Computing using Fault Injection Testing Methodology.

This volume constitutes revised selected papers from the four workshops collocated with the 19th International Conference on Software Engineering and Formal Methods, SEFM 2021, held virtually during December 6-10, 2021. The 21 contributed papers presented in this volume were carefully reviewed and selected from a total of 29 submissions. The book also contains 3 invited talks. SEFM 2021 presents the following four workshops: CIFMA 2021 - 3rd International Workshop on Cognition: Interdisciplinary Foundations, Models and Applications; CoSim-CPS 2021 - 5th Workshop on Formal Co-Simulation of Cyber-Physical Systems; OpenCERT 2021 - 10th International Workshop on Open Community approaches to Education, Research and Technology; ASYDE 2021 - 3rd International Workshop on Automated and verifiable Software sYstem Development. Due to the Corona pandemic this event washeld virtually.