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Proof step 8 from proof synced-commit (previous step)

⟨awbuf_commit#(lpt3, adr3, m3, avol, bleb; ns4, adr1, m1, nx, lpt1, ns1, isbuf; err)⟩ (ns4 = ns2 ∧ adr1 = adr2 ∧ m1 = m2 ∧ nx = nx1 ∧ lpt1 = lpt2 ∧ ns1 = ns3 ∧ (isbuf ↔ isbuf0) ∧ err = err0), # lpt1 = # avol, # lpt3 = # avol, awbuf-inv(avol, bleb), synced(avol), avol0 ↓ avol ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then {adr1 := adr3; m1 := m3; nx := []; lpt1 := lpt3; ns1 := ns4} else isbuf := true; ns4 := ?⟩ (adr2 = adr1 ∧ m2 = m1 ∧ nx1 = nx ∧ lpt2 = lpt1 ∧ ns3 = ns1), adr2 = adr1 ∧ m2 = m1 ∧ nx1 = nx ∧ lpt2 = lpt1 ∧ ns3 = ns1

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 9:
⟨awbuf_commit#(lpt3, adr3, m3, avol, bleb; ns4, adr1, m1, nx, lpt1, ns1, isbuf; err)⟩ (ns4 = ns2 ∧ adr1 = adr2 ∧ m1 = m2 ∧ nx = nx1 ∧ lpt1 = lpt2 ∧ ns1 = ns3 ∧ (isbuf ↔ isbuf0) ∧ err = err1), # lpt3 = # avol, # lpt1 = # avol, awbuf-inv(avol, bleb), synced(avol), avol0 ↓ avol ⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; if err = ESUCCESS then {adr1 := adr3; m1 := m3; nx := []; lpt1 := lpt3; ns1 := ns4} else isbuf := true; ns4 := ?⟩ (adr2 = adr1 ∧ m2 = m1 ∧ nx1 = nx ∧ lpt2 = lpt1 ∧ ns3 = ns1), adr2 = adr1 ∧ m2 = m1 ∧ nx1 = nx ∧ lpt2 = lpt1 ∧ ns3 = ns1

Proof step 8 from proof synced-commit (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information