| Summary: | This paper describes a tool-supported method for the formal verification of Ada programs. It presents ATOS, a tool that automati- cally extracts a model in SPIN from an Ada Program, together with a set of properties that state the correctness of the model. ATOS is also capable of extracting properties from user-provided annotations in Ada programs, inspired by the Spark Annotation language. The goal of ATOS is to help in the verification of sequential and concurrent Ada pro- grams based on model checking. The paper introduces the details of the proposed mechanisms, as well as the results of experimental validation, through a case study.
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