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Proof step 5 from proof crash-neutral-remap (previous step)

# lpt = # avol, adr = adr0, m = m1, m0 = m2, ns = ns0, nx = nx0, m2 < # avol, awbuf-inv(avol, bleb), synced(avol0), synced(avol), avol0 ↓ avol ⊦ ⟨fail_or_success#(; ; err); if err = ESUCCESS then avol[m0] := mapped(mkbuf(0)) else {skip or avol[m0] := unmapped}⟩ (avol0 ↓ avol), buffered(m2) = bleb

Heuristic weak unfold applied rule call right

And obtained the following new goals

Proof step 6:
# lpt = # avol, adr = adr0, m = m1, m0 = m2, ns = ns0, nx = nx0, m2 < # avol, awbuf-inv(avol, bleb), synced(avol), synced(avol0), avol0 ↓ avol ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then avol[m0] := mapped(mkbuf(0)) else {skip or avol[m0] := unmapped}⟩ (avol0 ↓ avol), buffered(m2) = bleb

Rule argument

pos: right 1

Additional information

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