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Proof step 21 from proof refine-remap (previous step)

# avol0 = # avol1, # lpt0 = # avol1, # buf = EB_PAGE_SIZE, m4 < # avol1, abs(avol1, bleb0, mkwbuf(buf, m3, m2), avol0, rofs), awbuf-inv(avol1, bleb0), ebm-vol-inv(avol0), synced(avol1), bleb0 ≠ nobuffer → bleb0.leb < # avol1 ∧ wbuf-cons(mkwbuf(buf, m3, m2), avol0[bleb0.leb], rofs) ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then avol1[m4] := mapped(mkbuf(0)) else {skip or avol1[m4] := unmapped}⟩ (abs(avol1, bleb0, mkwbuf(buf, m3, m2), avol0[m4, mapped(mkbuf(0))], rofs) ∧ ESUCCESS = err), buffered(m4) = bleb0

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 22:
# buf = EB_PAGE_SIZE, # lpt0 = # avol1, # avol0 = # avol1, m4 < # avol1, abs(avol1, bleb0, mkwbuf(buf, m3, m2), avol0, rofs), awbuf-inv(avol1, bleb0), ebm-vol-inv(avol0), synced(avol1), bleb0 ≠ nobuffer → bleb0.leb < # avol1 ∧ wbuf-cons(mkwbuf(buf, m3, m2), avol0[bleb0.leb], rofs) ⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; if err = ESUCCESS then avol1[m4] := mapped(mkbuf(0)) else {skip or avol1[m4] := unmapped}⟩ (abs(avol1, bleb0, mkwbuf(buf, m3, m2), avol0[m4, mapped(mkbuf(0))], rofs) ∧ ESUCCESS = err), buffered(m4) = bleb0

Proof step 21 from proof refine-remap (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information