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Proof step 28 from proof writepage-prepost (previous step)

err0 = ESUCCESS, ⌜buf0⌝ = (σ from n3 * VFS_PAGE_SIZE) to VFS_PAGE_SIZE, ((m0 =>mkfile(n2, md, m1, σ) * F))(files), afs-cons(dirs, files), m0 ∈ files, n0 + n1 ≤ # buf0, m + n1 ≤ # buf1, n0 + n1 ≤ VFS_PAGE_SIZE ⊦ [afs_writepage#(mkinode(m0, md0, boolvar, m2, m3, m4), n3, copy(buf1, m, buf0, n0, n1), dirs; err0, files; asynced)] ( err0 = ESUCCESS ∧ ((m0 =>mkfile(n2, md, m1, (σ to n3 * VFS_PAGE_SIZE) + ⌜copy(buf1, m, buf0, n0, n1)⌝ + (σ from VFS_PAGE_SIZE * n3 + VFS_PAGE_SIZE)) * F) )(files) → ((m0 =>mkfile(n2, md, m1, (σ to n3 * VFS_PAGE_SIZE + n0) + ((⌜buf1⌝ from m) to n1) + (σ from n3 * VFS_PAGE_SIZE + n0 + n1)) * F))(files))

User applied rule skip call

And obtained the following new goals

Proof step 29:
err0 = ESUCCESS, ⌜buf0⌝ = (σ from n3 * VFS_PAGE_SIZE) to VFS_PAGE_SIZE, ((m0 =>mkfile(n2, md, m1, σ) * F))(files), afs-cons(dirs, files), m0 ∈ files, n0 + n1 ≤ VFS_PAGE_SIZE, m + n1 ≤ # buf1, n0 + n1 ≤ # buf0 ⊦ ∀ err0, files, asynced. err0 = ESUCCESS ∧ ((m0 =>mkfile(n2, md, m1, (σ to n3 * VFS_PAGE_SIZE) + ⌜copy(buf1, m, buf0, n0, n1)⌝ + (σ from VFS_PAGE_SIZE * n3 + VFS_PAGE_SIZE)) * F) )(files) → ((m0 =>mkfile(n2, md, m1, (σ to n3 * VFS_PAGE_SIZE + n0) + ((⌜buf1⌝ from m) to n1) + (σ from n3 * VFS_PAGE_SIZE + n0 + n1)) * F))(files)

Rule argument

pos: right 1

Proof step 28 from proof writepage-prepost (previous step)

User applied rule skip call

And obtained the following new goals

Rule argument

Additional information