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Proof step 16 from proof inv-format (previous step)

⊦ ⟪choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; avols := ∅; if err = ESUCCESS then avols[default-volid] := fill(mkabstractvolume(n), erased)⟫ (err = ESUCCESS → default-volid ∈ avols ∧ ebm-cons(avols))

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 17:
⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; avols := ∅; if err = ESUCCESS then avols[default-volid] := fill(mkabstractvolume(n), erased)⟫ (err = ESUCCESS → default-volid ∈ avols ∧ ebm-cons(avols))
Proof step 33:
⊦ ∃ err0. ⌊err0⌋ ∨ err0 = ESUCCESS

Proof step 16 from proof inv-format (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

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