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Proof step 1 from proof crash-neutral-check-page (conclusion)

⊦ ⟨pcache_check_page#(ino, pageno, pcache; boolvar, boolvar0, err)⟩ true

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 2:
boolvar0 ↔ boolvar2, boolvar ↔ boolvar1 ⊦ ⟨let key = datakey(ino, pageno) in if key ∈ pcache then {boolvar0 := true; boolvar := pcache[key].dirty} else boolvar0 := false⟩ true

Rule argument

pos: right 1

Additional information

Used simplifier rules: check-page: ⊦ ;