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Proof step 248 from proof eq-io-truncate (previous step)

asynced ↔ boolvar2, boolvar ↔ boolvar0, files1[m] = mkfile(m0, md0, m1, content), buf-opt = buf-opt0, dirs = dirs1, dirs0 = dirs1, files = files1, files0 = files1, inode = mkinode(m, md, false, m1, 0, m2), n = n0, pageno1 = m2 / VFS_PAGE_SIZE, m ∈ files1, ⌊err1⌋ , buf-opt0.some? → # buf-opt0.buf = VFS_PAGE_SIZE ⊦ ⟨if pre-truncate(inode, n, pageno1, buf-opt, dirs, files) then let pageno0 = 0, pageno = 0 in afs_truncate_internal#(n, pageno1; inode, buf-opt, pageno0, pageno, boolvar, err, dirs, files; asynced) else abort⟩ (buf-opt = buf-opt0 ∧ inode = mkinode(m, md, false, m1, 0, m2) ∧ (boolvar ↔ boolvar0) ∧ err = err1 ∧ dirs = dirs0 ∧ files = files0), VFS_PAGE_SIZE = 0

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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