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Proof step 4 from proof inv-init (previous step)

⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; choose pebs with err = ESUCCESS → mtd-cons(pebs) in pebs0 := pebs⟫ ((err = ESUCCESS → mtd-cons(pebs0)) ∧ (err = ESUCCESS ∨ ⌊err⌋ ))

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 5:
err = err0, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪choose pebs with err = ESUCCESS → mtd-cons(pebs) in pebs0 := pebs⟫ ((err = ESUCCESS → mtd-cons(pebs0)) ∧ (err = ESUCCESS ∨ ⌊err⌋ ))

Proof step 4 from proof inv-init (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information