SepAuto: make [hoare_unfold] unfold before the [cancel] in [step]
SepAuto: make [hoare_unfold] unfold before the [cancel] in [step]

mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl