Verification of correctness of control programs is an essential task in the development of space electronics; it is difficult and typically outweighs design and programming tasks in terms of development hours. This paper presents a verification approach designed to help spacecraft engineers reduce the effort required for formal verification of low-level control programs executed on custom hardware. The verification approach is demonstrated on an industrial case study. We present REDFIN, a

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... sing core used in space missions, and its formal semantics expressed using the proposed metalanguage for state transformers, followed by examples of verification of simple control programs.