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Proof step 3 from proof icrash-refsize-cons (previous step)

⊦ (∀ n. n ∈ crash(istore1, istore0) → crash(istore1, istore0)[n].ref-size = (as | n).size) ↔ refsize-cons(istore0, as)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
⊦ (∀ n. n ∈ istore0 → crash(istore1, istore0)[n].ref-size = (as | n).size) ↔ refsize-cons(istore0, as)

Rule argument

Additional information

Used simplifier rules: crash-index-in: ⊦ n ∈ crash(istore, istore0) ↔ n ∈ istore0;