Theoretical Aspects of Computing

Invited Papers and Abstract.- Invariants and Well-Foundedness in Program Algebra.- A Theory of Software Product Line Refinement.- The TLA?+? Proof System: Building a Heterogeneous Verification Platform.- Grammars.- Subtyping Algorithm of Regular Tree Grammars with Disjoint Production Rules.- Minimal Tree Language Extensions: A Keystone of XML Type Compatibility and Evolution.- Tracking Down the Origins of Ambiguity in Context-Free Grammars.- Semantics.- Prioritized slotted-Circus.- A Denotational Semantical Model for Orc Language.- An Extended cCSP with Stable Failures Semantics.- Preference and Non-deterministic Choice.- Modelling.- Material Flow Abstraction of Manufacturing Systems.- Specification and Verification of a MPI Implementation for a MP-SoC.- Special Track: Formal Aspects of Software Testing and Grand Challenge in Verified Software.- Testing of Abstract Components.- Scalable Distributed Concolic Testing: A Case Study on a Flash Storage Platform.- Analyzing a Formal Specification of Mondex Using Model Checking.- Formal Modelling of Separation Kernel Components.- Mechanized Verification with Sharing.- Industrial-Strength Certified SAT Solving through Verified SAT Proof Checking.- Dynamite 2.0: New Features Based on UnSAT-Core Extraction to Improve Verification of Software Requirements.- Logics.- Complete Calculi for Structured Specifications in Fork Algebra.- Towards Managing Dynamic Reconfiguration of Software Systems in a Categorical Setting.- Characterizing Locality (Encapsulation) with Bisimulation.- Justification Logic and History Based Computation.- Algorithms and Types.- A Class of Greedy Algorithms and Its Relation to Greedoids.- On Arithmetic Computations with Hereditarily Finite Sets, Functions and Types.- A Modality for Safe Resource Sharing andCode Reentrancy.