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Proof step 3 from proof valid-ebatbl-write-data (previous step)

apebs[n] = mkpeb(aehdr, avhdr, buf0, m0, boolvar) ⊦ (∀ v, m, n1. vols[v][m] = ⌜n1⌝ ∧ v ∈ vols ∧ m < # vols[v] ↔ wlar[n1].status = used ∧ n1 < # apebs ∧ n1 < # wlar ∧ apebs[n, mkpeb(aehdr, avhdr, buf1, m1, boolvar)][n1].vidhdr.valid? ∧ apebs[n, mkpeb(aehdr, avhdr, buf1, m1, boolvar)][n1].vidhdr.vol = v ∧ apebs[n, mkpeb(aehdr, avhdr, buf1, m1, boolvar)][n1].vidhdr.leb = m ∧ n1 ≠ n0) ↔ (∀ v, m, n1. vols[v][m] = ⌜n1⌝ ∧ v ∈ vols ∧ m < # vols[v] ↔ wlar[n1].status = used ∧ n1 < # apebs ∧ n1 < # wlar ∧ apebs[n1].vidhdr.valid? ∧ apebs[n1].vidhdr.vol = v ∧ apebs[n1].vidhdr.leb = m ∧ n1 ≠ n0)

Heuristic pl case distinction applied rule case distinction

And obtained the following new goals

Rule argument

pos: right 1

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