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Proof step 4 from proof crash-neutral-orphans-remove (previous step)

boolvar ↔ true, key.inode?, fo.inodes?, ro.inodes?, log-cons(log, fs), ri-inj(fi), ri-inj(ri) ⊦ ⟨if key.inode? then ro := ro -- key else abort⟩ true

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 5:
boolvar ↔ true, key.inode?, ro.inodes?, fo.inodes?, log-cons(log, fs), ri-inj(ri), ri-inj(fi) ⊦ ⟨ro := ro -- key⟩ true

Rule argument

pos: right 1

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