| ubi-io-write-echdr-pre(n, aehdr, apebs), ubi-io-inv(apebs), apebs0 = apebs ⊦ ⟨aubi_io_write_echdr#(n, aehdr; apebs; err)⟩ (apebs0 = apebs) |
apebs0 = apebs, ubi-io-inv(apebs), ubi-io-write-echdr-pre(n, aehdr, apebs) ⊦ ⟨aubi_io_write_echdr#(n, aehdr; apebs; err)⟩ (apebs0 = apebs)