Spichkova, Maria2023-03-202023-03-202011https://dl.gi.de/handle/20.500.12116/40952This paper focuses on the system requirements and architecture w.r.t. their decomposition and refinement: how the refinement-based verification can be used to optimize verification process, and which influences it has on the specification process. We introduce here specification decomposition methods, applying which ones can not only to keep the specification readable and manageable, but also find out a number of inconsistencies and underspecifications during specification phase as well, without starting a formal verification process.enText/Journal Article0720-8928