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Proof step 11 from proof crash-neutral-create (previous step)

root.dir?, fids-cons(root, fs, ofh), posix-crash(root, fs, ofh, tree, fs0, ofh0) ⊦ ⟨psynced := ?⟩ (psynced ∧ posix-crash(root, fs, ofh, tree, fs0, ofh0)), ∃ err. pre-create(path, md, err, user, root, fs, ofh) ∧ ⟨err0 := err; if err0 = ESUCCESS then choose fid with ¬ fid ∈ fs in {root[path] := fnode(fid); fs[fid] := mkfile(md, mkbuf(0))}; psynced := ?⟩ (psynced ∧ posix-crash(root, fs, ofh, tree, fs0, ofh0))

Heuristic symbolic execution applied rule assign right

And closed the goal!

Rule argument

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