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Proof step 4 from proof inv-orphans-remove (previous step)

key.inode?, jro < jmaxino ⊦ ⟪if key.inode? then jro := jro -- key.ino else abort⟫ (jro < jmaxino)

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 5:
key.inode?, jro < jmaxino ⊦ ⟪jro := jro -- key.ino⟫ (jro < jmaxino)

Rule argument

pos: right 1

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