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Proof step 27 from proof eq-io-readdir (previous step)

dirs1[m] = mkdir(m3, md0, m4, m5, entries), m ∈ dirs1, ⌊err1⌋ ⊦ ⟨strings0 := strings1; fail#(; ; err)⟩ (strings0 = strings1 ∧ err = err1), ∃ strings. ⟨strings0 := strings; fail#(; ; err)⟩ (strings0 = strings1 ∧ err = err1)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 28:
dirs1[m] = mkdir(m3, md0, m4, m5, entries), m ∈ dirs1, ⌊err1⌋ ⊦ ⟨fail#(; ; err)⟩ (strings1 = strings1 ∧ err = err1), ∃ strings. ⟨strings0 := strings; fail#(; ; err)⟩ (strings0 = strings1 ∧ err = err1)

Proof step 27 from proof eq-io-readdir (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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