Fundamental Approaches to Software Engineering 21st International Conference, FASE 2018, Held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2018, Thessaloniki, Greece, April 14-20, 2018, Proceedings

Within the realm of software engineering, a profound exploration unfolds into the very bedrock upon which robust and reliable systems are constructed. Researchers delve into the fundamental approaches that promise to elevate software development to a more mature and soundly-based discipline, meticulously weaving together conceptual advancements with their formal underpinnings and practical tool support. The journey begins with a deep dive into model-based software development, where the precision of formal frameworks takes center stage.

Here, the intricate dance of model manipulation is meticulously examined, revealing innovations such as a formal framework for incremental model slicing, allowing for systematic and precise refinement of complex models. Further advancements unveil methods for multiple model synchronization, employing sophisticated multiary delta lenses to maintain consistency across various representations of a system. The critical aspect of security is also addressed, with explorations into controlling the attack surface of object-oriented refactorings and the efficient analysis of attack trees through model-driven approaches, ensuring that foundational changes enhance rather than compromise system integrity.

The focus then shifts to the complexities of distributed programs and system analysis, tackling the inherent challenges of concurrent operations. New distributed transaction protocols, like ROLA, are introduced and subjected to rigorous formal analysis to guarantee their correctness and resilience. Investigations also present process network models designed for reactive streaming software, aiming for deterministic task parallelism to manage the flow of data and execution in intricate systems. Furthermore, the monitoring of cyber-physical systems at runtime gains new capabilities through distributed graph queries, offering real-time insights into their dynamic behavior. The analysis of web applications is also enhanced by EventHandler-based frameworks, leveraging dynamically collected states to understand and predict behavior.

In the pursuit of assured software quality, significant attention is paid to design and verification. Methodologies for hierarchical specification and verification of architectural design patterns are advanced, providing structured ways to confirm that complex system blueprints adhere to their intended properties. The process of verification-driven incremental distributed design of components receives support, enabling early and continuous validation as systems evolve. To aid developers, techniques emerge for summarizing software API usage examples through clustering, distilling complex documentation into actionable insights. The pursuit of efficiency in analysis is furthered by methods for fast computation of arbitrary control dependencies, crucial for understanding program flow and potential impacts.

The critical domain of specification and program testing sees innovative strides, particularly in the generation and optimization of test artifacts. Approaches for the iterative generation of diverse models are presented, specifically crafted for testing the specifications of specialized logic tools. Moreover, the efficacy of spectrum-based fault localization is optimized for single-fault programs through the judicious use of formal specifications, sharpening the ability to pinpoint errors with greater precision. These diverse explorations underscore a collective commitment to deepening the theoretical and practical understanding of software, pushing the boundaries of what is achievable in building reliable, secure, and efficient systems.