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Proof step 6 from proof del-put-switch (previous step)

⊦ rk ∈ st[r -- sk, val] -- r0 ↔ rk = r -- sk ∨ rk ∈ st -- r0, r = r0

User applied rule structural induction

And obtained the following new goals

Proof step 5:
⊦ r1 -- sk0 ∈ st[r -- sk, val] -- r0 ↔ r1 -- sk0 = r -- sk ∨ r1 -- sk0 ∈ st -- r0, r = r0

Rule argument

[VARWITHVARSEQSARG : rk, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : refkey generated by --;])]]