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Proof step 26 from proof writepage-prepost (previous step)

# buf = VFS_PAGE_SIZE, ((m0 =>mkfile(n0, md, m, σ) * F))(files), afs-cons(dirs, files), m0 ∈ files, ⌊err0⌋ ⊦ [asynced := ?] ( err0 = ESUCCESS ∧ ((m0 =>mkfile(n0, md, m, (σ to n * VFS_PAGE_SIZE) + ⌜buf⌝ + (σ from VFS_PAGE_SIZE * n + VFS_PAGE_SIZE)) * F))(files) ∨ ⌊err0⌋ )

Heuristic symbolic execution applied rule assign right

And closed the goal!

Rule argument

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