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Proof step 1 from proof update-index-one (conclusion)
⊦ ri[key ', adr '] = ri[key, adr]
User applied rule insert rewrite lemma
And obtained the following new goals
Proof step 2
:
⊦ key ' = key + []
Proof step 3
:
⊦ ri[key + [], adr '] = ri[key, adr]
Rule argument
spec: list, inst: key-list-set name: One seq: ⊦ key ' = key + [] subst: [key] → [key] flags: <all paths>
Additional information
Used terms: key