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Proof step 7 from proof inv-format (previous step)

⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; lpt0 := lpt; if err = ESUCCESS then {avol := fill(mkavolume(# lpt), unmapped); adr := adr0; m := m0; nx := []; lpt := lpt0; ns := ∅; bleb := nobuffer; isbuf := false} else avol := ?, bleb := ?, isbuf := ?, adr := ?, m := ?, nx := ?, lpt := ?, ns := ?⟫ (err = ESUCCESS → synced(avol) ∧ awbuf-inv(avol, bleb) ∧ # lpt = # avol)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 8:
err = err0, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪lpt0 := lpt; if err = ESUCCESS then {avol := fill(mkavolume(# lpt), unmapped); adr := adr0; m := m0; nx := []; lpt := lpt0; ns := ∅; bleb := nobuffer; isbuf := false} else avol := ?, bleb := ?, isbuf := ?, adr := ?, m := ?, nx := ?, lpt := ?, ns := ?⟫ (err = ESUCCESS → synced(avol) ∧ awbuf-inv(avol, bleb) ∧ # lpt = # avol)

Proof step 7 from proof inv-format (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information