@incollection{deploy315, number = {6968}, author = {Alexei Iliasov}, series = {LNCS}, booktitle = {Software Engineering for Resilient Systems, Proc. of 3rd International Workshop. September 29-30, 2011 Geneva, Switzerland}, editor = {Elena Troubitsyna}, title = {Use case scenarios as verification conditions: Event-B/Flow approach}, publisher = {Springer}, year = {2011}, pages = {9--23}, url = {http://deploy-eprints.ecs.soton.ac.uk/315/}, abstract = {Model-oriented formalisms rely on a combination of safety constraints and satisfaction of refinement obligations to demonstrate model correctness. We argue that for a significant class of models a substantial part of the desired model behaviour would not be covered by such correctness conditions, meaning that a formal development potentially ends with a correct model inadequate for its purpose. In this paper we present a method for augmenting Event-B specifications with additional proof obligations expressed in a visual, diagrammatic way. A case study illustrates how the method may be used to strengthen a model by translating use case scenarios from requirement documents into formal statements over a modelled system.} }