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This paper explores verification of constituent systems within the context ofthe Symphony tool platform for Systems of Systems (SoS). Our SoS modellinglanguage, CML, supports various contractual specification elements, such asstate invariants and operation preconditions, which can be used to specifycontractual obligations on the constituent systems of a SoS. To supportverification of these obligations we have developed a proof obligationgenerator and theorem prover plugin for Symphony. The latter uses theIsabelle/HOL theorem prover to automatically discharge the proof obligationsarising from a CML model. Our hope is that the resulting proofs can then beused to formally verify the conformance of each constituent system, which isturn would result in a dependable SoS.

Towards Verification of Constituent Systems through Automated Proof