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Proof step 37 from proof inv-write (previous step)

of[fd] = mkfile(m, mode, m0), files[m] = mkfile(m1, md, m2, content), buf-opt = none, dirs1 = dirs, err = ESUCCESS, inode = mkinode(m, md, false, m2, 0, m1), n = m1, pageno = m1 / VFS_PAGE_SIZE, dom of < ino3, afs-cons(dirs, files), of-cons(of, dirs, files), fd ∈ of, n0 ≤ # buf ⊦ [if pre-truncate(inode, n, pageno, buf-opt, dirs, files) then let ino0 = 0, ino = 0 in afs_truncate_internal#(n, pageno; inode, buf-opt, ino0, ino, isdir, err, dirs, files; asynced) else abort; ino0 := 0; if err = ESUCCESS then vfs_write_loop#(m0, inode, m0 + n0, buf, dirs; ino0, err, files, asynced); if ino0 ≠ 0 then err := ESUCCESS; if err = ESUCCESS then let ino = inode.size in {n0 := ino0, ino1 := m0 + ino0; if ino0 ≠ 0 ∧ ino < ino1 then {inode.size := ino1; afs_check_commit#(dirs, files; err; asynced); if err = ESUCCESS then afs_write_inode#(inode; err, dirs, files; asynced)}; if err ≠ ESUCCESS then n0 := (m0 ≤ ino ⊃ ino - m0;0), err := ESUCCESS; of[fd].pos := m0 + n0}] (dirs1 = dirs → of-cons(of, dirs, files) ∧ dom of < ino3 ∧ afs-cons(dirs, files)), VFS_PAGE_SIZE = 0, n0 = 0, mode ≠ MODE_W ∧ mode ≠ MODE_RW

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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