Program Equivalence (Dagstuhl Seminar 18151)

Program equivalence is the problem of proving that two programs are equal under some definition of equivalence, e.g., input-output equivalence. The field draws researchers from formal verification, semantics and logics. This report documents the program and the outcomes of Dagstuhl Seminar 18151 "Program Equivalence". The seminar was organized by the four official organizers mentioned above, and Dr. Nikos Tzevelekos from Queen-Mary University in London.