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Proof step 4 from proof inv-destroy-buf (previous step)

# lpt = # avol, awbuf-inv(avol, bleb), synced(avol) ⊦ ⟪if synced(avol) then if isbuf then err := EROFS else bleb := nobuffer, err := ESUCCESS else abort⟫ awbuf-inv(avol, bleb)

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 5:
# lpt = # avol, awbuf-inv(avol, bleb), synced(avol) ⊦ ⟪if isbuf then err := EROFS else bleb := nobuffer, err := ESUCCESS⟫ awbuf-inv(avol, bleb)

Rule argument

pos: right 1

Proof step 4 from proof inv-destroy-buf (previous step)

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Rule argument

Additional information