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Proof step 5 from proof inv-commit (previous step)

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

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 6:
# 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)

Rule argument

pos: right 1

Additional information

Used simplifier rules: fail_or_success#(; ; ERR) {choose ERR0 with ⌊ERR0⌋ ∨ ERR0 = ESUCCESS in ERR := ERR0};