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Proof step 6 from proof inv-commit (previous step)

# lpt0 = # avol, # lpt = # avol, awbuf-inv(avol, bleb), synced(avol) ⊦ ⟪choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then {adr := adr0; m := m0; nx := []; lpt := lpt0; ns := ns0} else isbuf := true; ns0 := ?⟫ (# lpt = # avol)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 7:
# lpt = # avol, # lpt0 = # avol, awbuf-inv(avol, bleb), synced(avol), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; if err = ESUCCESS then {adr := adr0; m := m0; nx := []; lpt := lpt0; ns := ns0} else isbuf := true; ns0 := ?⟫ (# lpt = # avol)
Proof step 17:
# lpt = # avol, # lpt0 = # avol, awbuf-inv(avol, bleb), synced(avol) ⊦ ∃ err0. ⌊err0⌋ ∨ err0 = ESUCCESS

Proof step 6 from proof inv-commit (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information