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Proof step 2 from proof instore-rec-03 (previous step)

⊦ instore(r, class, (sk × val) ' + fis, st) ↔ r -- sk ∈ st ∧ st[r -- sk] = val ∧ instore(r, class, fis, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ instore(r, class, (sk × val) ' + fis, st) ↔ (r -- sk) × val ∈ st ∧ instore(r, class, fis, st)

Rule argument

[crewrite-arg: instore-rec-02 , F , [st, fis, val, sk, class, r] → [st, fis, val, sk, class, r] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ rk × val ∈ st ↔ rk ∈ st ∧ st[rk] = val])], [EXTRATERMS : (st, fis, val, sk, class, r)]]