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Proof step 1 from proof eq-io-lookup (conclusion)

⟨afs_lookup#(p_ino, dirs, files, asynced; dent, err)⟩ ((p_ino = pageno ∧ dent = old_dent ∧ err = err0) ∧ dirs = dirs0 ∧ files = files0 ∧ (asynced ↔ boolvar)), dirs = dirs1, files = files1 ⊦ ⟨afs_lookup#(p_ino, dirs1, files1, boolvar0; dent, err)⟩ ((p_ino = pageno ∧ dent = old_dent ∧ err = err0) ∧ dirs1 = dirs0 ∧ files1 = files0)

Heuristic split applied rule split left

And obtained the following new goals

Rule argument

pos: left 1

Additional information