Foreword -- Preface -- Part I: Historic Account -- ProCoS: How It All Began - As Seen from Denmark -- Part II: Hybrid Systems -- Constraint-Solving Techniques for the Analysis of Probabilistic Hybrid Systems -- MARS: A Tool chain for Modelling, Analysis and Verification of Hybrid Systems -- Part III: Correctness of Concurrent Algorithms -- A Proof Method for Linearizability on TSO Architectures -- Part IV: Interfaces and Linking -- Linking Discrete and Continuous Models, Applied to Traffic Manoeuvres -- Towards Interface-Driven Design of Evolving Component-Based Architectures -- Part V: Automatic Verification -- Computing Verified Machine Address Bounds during Symbolic Exploration of Code -- Engineering a Formal, Executable x86 ISA Simulator for Software Verification -- Advances in Connection-Based Automated Theorem Proving -- Part VI: Run-Time Assertion Checking -- Run-Time Deadlock Detection -- In-Circuit Assertions and Exceptions for Reconfigurable Hardware Design -- Part VII: Formal and Semi-Formal Methods -- From ProCoS to Space and Mental Models - a Survey of Combing Formal and Semi-Formal Methods -- Part VIII: Web-Supported Communities in Science -- Provably Correct Systems: Community, Connections and Citations.