Alloy: a lightweight object modelling notation
ACM Transactions on Software Engineering and Methodology (TOSEM)
The verifying compiler: A grand challenge for computing research
Journal of the ACM (JACM)
A case study on applying formal methods to medical devices: computer-aided resuscitation algorithm
International Journal on Software Tools for Technology Transfer (STTT)
The Problem Frames Approach to Software Engineering
APSEC '07 Proceedings of the 14th Asia-Pacific Software Engineering Conference
Applying Formal Methods to a Certifiably Secure Software System
IEEE Transactions on Software Engineering
Incremental Development of a Distributed Real-Time Model of a Cardiac Pacing System Using VDM
FM '08 Proceedings of the 15th international symposium on Formal Methods
On the Role of Formal Methods in Software Certification: An Experience Report
Electronic Notes in Theoretical Computer Science (ENTCS)
Modeling in Event-B: System and Software Engineering
Modeling in Event-B: System and Software Engineering
Time constraint patterns for event b development
B'07 Proceedings of the 7th international conference on Formal Specification and Development in B
Formalization of heart models based on the conduction of electrical impulses and cellular automata
FHIES'11 Proceedings of the First international conference on Foundations of Health Informatics Engineering and Systems
Formal Specification of Medical Systems by Proof-Based Refinement
ACM Transactions on Embedded Computing Systems (TECS) - Special Issue on Modeling and Verification of Discrete Event Systems
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Formal methods have emerged as a complementary approach to ensuring quality and correctness of high-confidence medical systems, overcoming limitations of traditional validation techniques such as simulation and testing. In this paper, we propose a new methodology to obtain certification assurance for complex medical systems design, based on the use of formal methods. The methodology consists of five main phases: first, informal requirements, resulting in a structured version of the requirements, where each fragment is classified according to a fixed taxonomy. In the second phase, informal requirements are represented in formal modeling language, with a precise semantics, and enriched with invariants and temporal constraints. The third phase consists of refinement-based formal verification to test the internal consistency and correctness of the specifications. The fourth phase is the process of determining the degree to which a formal model is an accurate representation of the real world from the perspective of the intended uses of the model using model-checker. Last phase provides an animation framework for the formal model with real-time data set instead of toy-data, and offers a simple way for specifiers to build a domain specific visualization that can be used by domain experts to check whether a formal specification corresponds to their expectations. Furthermore, we show the effectiveness of this methodology for modeling of a cardiac pacemaker system.