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Proof step 27 from proof inv-readdir (previous step)

isdir ↔ true, err = (inode.directory ⊃ EISDIR;ENOTDIR), err0 = ESUCCESS, err1 = ESUCCESS, ino = ino0, inode = getinode(ino, dirs, files), mode = MODE_R, afs-cons(dirs, files), ispath(p0, ROOT_INO, ino0, dirs, files), of-cons(of, dirs, files), pre-iget(ino, dirs, files), px-parent(user, p0, ROOT_INO, dirs, files) ⊦ ⟪skip⟫ true, inode.directory ↔ isdir

Proof step 27 from proof inv-readdir (previous step)

Heuristic symbolic execution applied rule skip right

And closed the goal!

Rule argument

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