A Report on the First International Workshop on Program Equivalence (PEQ 2022).

Program equivalence [1] 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. Program equivalence is arguably one of the most interesting and at the same time important problems in formal verification. It is a cross-cutting topic that has attracted the interest of several research communities: denotational semantics, deductive software verification, bounded model checking, specification inference, High level synthesis, software evolution and regression testing, etc. The goal of the workshop is to stimulate an exchange of ideas to forge a community working on Program Equivalence.