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Proof step 3 from proof valid-global-sqn-write-valid (previous step)

apebs[m] = mkpeb(aehdr, avhdr, buf0, m0, boolvar0), m < # apebs, valid-peb(mkpeb(aehdr, avhdr, buf0, m0, boolvar0)), valid-peb(mkpeb(aehdr, avhdr, buf1, m1, boolvar1)) ⊦ (∀ v, m2. valid-sqns(v, m2, apebs[m, mkpeb(aehdr, avhdr, buf1, m1, boolvar1)]) ≠ ∅ → valid-sqns(v, m2, apebs[m, mkpeb(aehdr, avhdr, buf1, m1, boolvar1)]).max < n) ↔ (∀ v, m2. valid-sqns(v, m2, apebs) ≠ ∅ → valid-sqns(v, m2, apebs).max < n)

Heuristic pl case distinction applied rule case distinction

And obtained the following new goals

Rule argument

pos: right 1

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