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Proof step 4 from proof inv-unmap (previous step)

bleb ≠ nobuffer → bleb.leb < # avol ∧ avol[bleb.leb].mapped?, n0 < # avol ∧ avol[n0].mapped? → # avol[n0].data ≤ LEB_SIZE ∧ (buffered(n0) ≠ bleb → is-aligned(# avol[n0].data, EB_PAGE_SIZE)) ⊦ bleb = buffered(n), ( n0 < # avol ∧ avol[n, unmapped][n0].mapped? → # avol[n0].data ≤ LEB_SIZE ∧ (buffered(n0) ≠ bleb → is-aligned(# avol[n0].data, EB_PAGE_SIZE))) ∧ (bleb ≠ nobuffer → bleb.leb < # avol ∧ avol[n, unmapped][bleb.leb].mapped?)

Heuristic nonsplitting cut applied rule cut formula

And obtained the following new goals

Rule argument

fma: buffered(n0) = bleb

Additional information

Used simplifier rules: ⊦ buffered(m) = buffered(m0) ↔ m = m0; (s)% ⊦ nobuffer ≠ buffered(m); (s)% ⊦ buffered(m).leb = m; (s)% ⊦ aleb.mapped? ↔ (∃ buf. aleb = mapped(buf)); (as)% ⊦ m ≠ n → avol[n, aleb][m] = avol[m]; (s)% ⊦ aleb.mapped? ↔ aleb ≠ unmapped; (ss)%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic% ⊦ unmapped ≠ mapped(buf); (s) Used formulas: buffered(n0) = bleb