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Proof step 54 from proof refine-read (previous step)

of[fd] = mkfile(m, mode, m0), buf = buf0, err = ESUCCESS, err1 = ESUCCESS, ino = m, n = n0, ofh = abs-of(of), root.dir?, dom of < ino2, abs(root, ROOT_INO)(dirs), afs-cons(dirs, files), fids-cons(root, abs-files(files), abs-of(of)), of-cons(of, dirs, files), fd ∈ of, n0 ≤ # buf0, psynced → asynced ⊦ [let ino1 = m0, ino0 = m0 + n, ino3 = 0 in if ino1 ≤ getinode(ino, dirs, files).size then {let isdir = false in vfs_read_loop#(ino1, ino0, getinode(ino, dirs, files), isdir, dirs, files, asynced; buf, ino3, err); if ino3 ≠ 0 then err := ESUCCESS; of[fd].pos := of[fd].pos + ino3; n := ino3} else n := 0] ( of-cons(of, dirs, files) ∧ dom of < ino2 → ⟨posix_read#(fd, user, root, abs-files(files); buf0, n0, err0, ofh)⟩ (ofh = abs-of(of) ∧ (psynced → asynced) ∧ buf = buf0 ∧ n = n0 ∧ err = err0)), mode ≠ MODE_R ∧ mode ≠ MODE_RW

Heuristic symbolic execution applied rule let right

And obtained the following new goals

Rule argument

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