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Proof step 14 from proof inv-read (previous step)

of[fd] = mkfile(m, mode, m0), err = ESUCCESS, ino = m, dom of < ino2, afs-cons(dirs, files), of-cons(of, dirs, files), fd ∈ of, n ≤ # buf, mode ≠ MODE_R → fd ∈ of ⊦ ⟪if pre-iget(ino, dirs, files) then {{inode := getinode(ino, dirs, files); err := ESUCCESS} or fail#(; ; err)} else abort; if err = ESUCCESS then if inode.directory then err := EISDIR else let ino1 = m0, ino0 = m0 + n, ino = 0 in if ino1 ≤ inode.size then {let isdir = false in vfs_read_loop#(ino1, ino0, inode, isdir, dirs, files, asynced; buf, ino, err); if ino ≠ 0 then err := ESUCCESS; of[fd].pos := of[fd].pos + ino; n := ino} else n := 0⟫ (of-cons(of, dirs, files) ∧ dom of < ino2), mode ≠ MODE_R ∧ mode ≠ MODE_RW

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 15:
of[fd] = mkfile(m, mode, m0), err = ESUCCESS, ino = m, dom of < ino2, afs-cons(dirs, files), of-cons(of, dirs, files), fd ∈ of, n ≤ # buf, mode ≠ MODE_R → fd ∈ of ⊦ ⟪{inode := getinode(ino, dirs, files); err := ESUCCESS} or fail#(; ; err); if err = ESUCCESS then if inode.directory then err := EISDIR else let ino1 = m0, ino0 = m0 + n, ino = 0 in if ino1 ≤ inode.size then {let isdir = false in vfs_read_loop#(ino1, ino0, inode, isdir, dirs, files, asynced; buf, ino, err); if ino ≠ 0 then err := ESUCCESS; of[fd].pos := of[fd].pos + ino; n := ino} else n := 0⟫ (of-cons(of, dirs, files) ∧ dom of < ino2), mode ≠ MODE_R ∧ mode ≠ MODE_RW

Rule argument

pos: right 1

Additional information

Used simplifier rules: ⊦ pre-iget(ino, dirs, files) ↔ valid-ino(ino, dirs, files); (s)% ⊦ valid-ino(ino, dirs, files) ↔ ino ∈ dirs ∨ ino ∈ files; (s)%⊦ of-cons(of, dirs, files) ∧ fd ∈ of ∧ of[fd] = mkfile(ino, mode, n) ∧ afs-cons(dirs, files) → ¬ ino ∈ dirs; (s)%⊦ of-cons(of, dirs, files) ∧ fd ∈ of ∧ of[fd] = mkfile(ino, mode, n) → ino ∈ files; (ss)