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Proof step 4 from proof crash-neutral-move-buf (previous step)

# lpt = # avol, adr = adr0, m = m2, m1 = m3, ns = ns0, nx = nx0, awbuf-inv(avol, bleb), synced(avol0), avol0 ↓ avol, bleb = buffered(m3) ∨ (bleb = nobuffer ∨ is-aligned(# avol[bleb.leb].data, EB_PAGE_SIZE)) ∧ m3 < # avol ∧ avol[m3].mapped? ∧ m0 = # avol[m3].data ⊦ ⟨if bleb = buffered(m1) ∨ (bleb = nobuffer ∨ is-aligned(# avol[bleb.leb].data, EB_PAGE_SIZE)) ∧ m1 < # avol ∧ avol[m1].mapped? ∧ m0 = # avol[m1].data then {fail_or_success#(; ; err); if err = ESUCCESS then bleb := buffered(m1)} else abort⟩ true

Heuristic symbolic execution applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

Additional information