| n < # apebs ⊦ valid-peb(v, m, mkpeb(aehdr, avhdr, buf, m0, boolvar)) ∧ apebs[n] = mkpeb(aehdr, avhdr, buf, m0, boolvar) → avhdr.sqn ∈ valid-sqns(v, m, apebs) |
apebs[n] = mkpeb(aehdr, avhdr, buf, m0, boolvar), n < # apebs, valid-peb(v, m, mkpeb(aehdr, avhdr, buf, m0, boolvar)) ⊦ avhdr.sqn ∈ valid-sqns(v, m, apebs)