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Proof step 23 from proof inv-open (previous step)

isdir ↔ false, err = ESUCCESS, err0 = ESUCCESS, ino = ino0, dom of < ino1, afs-cons(dirs, files), ispath(p, ROOT_INO, ino0, dirs, files), of-cons(of, dirs, files), pre-iget(ino, dirs, files), px-parent(user, p, ROOT_INO, dirs, files) ⊦ ⟪err := (getinode(ino, dirs, files).directory ⊃ EISDIR;ENOTDIR); if err = ESUCCESS then {of[ino1] := mkfile(ino0, mode, 0); fd := ino1; ino1 := ino1 + 1}⟫ (of-cons(of, dirs, files) ∧ dom of < ino1), getinode(ino, dirs, files).directory ↔ isdir

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 24:
isdir ↔ false, err = ESUCCESS, err0 = ESUCCESS, ino = ino0, dom of < ino1, afs-cons(dirs, files), ispath(p, ROOT_INO, ino0, dirs, files), of-cons(of, dirs, files), pre-iget(ino, dirs, files), px-parent(user, p, ROOT_INO, dirs, files) ⊦ ⟪if (getinode(ino, dirs, files).directory ⊃ EISDIR;ENOTDIR) = ESUCCESS then {of[ino1] := mkfile(ino0, mode, 0); fd := ino1; ino1 := ino1 + 1}⟫ (of-cons(of, dirs, files) ∧ dom of < ino1), getinode(ino, dirs, files).directory ↔ isdir

Proof step 23 from proof inv-open (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information