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Proof step 7 from proof instore-rec-01 (previous step)

∀ r, sk, st. r -- (sk ' + sks0) ∈ st ↔ r -- sk ∈ st ∧ st[r -- sk] .refval -- sks0 ∈ st ⊦ r -- (sk ' + sk0 ' + sks0) ∈ st ↔ r -- sk ∈ st ∧ st[r -- sk] .refval -- (sk0 ' + sks0) ∈ st

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ r -- (sk ' + sk0 ' + sks) ∈ st ↔ r -- sk ∈ st ∧ st[r -- sk] .refval -- (sk0 ' + sks) ∈ st

Rule argument

[crewrite-arg: instore-rec , F , [st, sks, sk0, sk, r] → [st, sks0, sk0, sk, r] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, sks0, sk0, sk, r)]]