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Proof step 4 from proof crash-neutral-recover (previous step)

ebm-cons(avols), ebm-cons(avols0), avols ⊆ avols0 ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err ≠ ESUCCESS then avols := ?⟩ (avols ⊆ avols0)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 5:
ebm-cons(avols0), ebm-cons(avols), avols ⊆ avols0 ⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; if err ≠ ESUCCESS then avols := ?⟩ (avols ⊆ avols0)

Proof step 4 from proof crash-neutral-recover (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information