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Proof step 6 from proof crash-neutral-add-log-leb (previous step)

# lpt = # avol, avol[m3] = mapped(buf), m3 < # avol, awbuf-inv(avol, bleb), synced(avol), synced(avol0), avol0 ↓ avol ⊦ ⟨fail_or_success#(; ; err); nx := nx0; if err = ESUCCESS then nx := nx + m3 ', bleb := buffered(m3)⟩ (nx0 = nx)

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 7:
# lpt = # avol, avol[m3] = mapped(buf), m3 < # avol, awbuf-inv(avol, bleb), synced(avol0), synced(avol), avol0 ↓ avol ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; nx := nx0; if err = ESUCCESS then nx := nx + m3 ', bleb := buffered(m3)⟩ (nx0 = nx)

Rule argument

pos: right 1

Additional information

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