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Proof step 9 from proof crash-neutral-readdir (previous step)

root.dir?, fids-cons(root, fs, ofh), posix-crash(root, fs, ofh, tree, fs0, ofh0) ⊦ ∃ err. pre-readdir(path, err, user, root, fs, ofh) ∧ ⟨err0 := err; if err0 = ESUCCESS then strings := dom root[path].entries else strings := ?⟩ true, ⟨err0 := EFAIL; if err0 = ESUCCESS then strings := dom root[path].entries else strings := ?⟩ true

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 10:
root.dir?, fids-cons(root, fs, ofh), posix-crash(root, fs, ofh, tree, fs0, ofh0) ⊦ ⟨if EFAIL = ESUCCESS then strings := dom root[path].entries else strings := ?⟩ true, ∃ err. pre-readdir(path, err, user, root, fs, ofh) ∧ ⟨err0 := err; if err0 = ESUCCESS then strings := dom root[path].entries else strings := ?⟩ true

Rule argument

pos: right 2

Proof step 9 from proof crash-neutral-readdir (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information