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

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⟫ ro.inodes?

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 5:
key.inode?, ro.inodes?, fo.inodes?, log-cons(log, fs), ri-inj(ri), ri-inj(fi) ⊦ ⟪ro := ro -- key⟫ ro.inodes?

Rule argument

pos: right 1

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