Correct and Complete Symbolic Execution for Free (opens in new tab)

Symbolic execution is a powerful technique for program analysis. However, the formal semantics underlying symbolic execution is often developed on an ad-hoc basis and decoupled from the concrete semantics of the programming language. To overcome this issue, we introduce symbolic SOS: a rule format that allows us to simultaneously specify concrete and symbolic operational semantics. We prove that symbolic semantics, when generated from symbolic S...