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Proof step 54 from proof onlymod-is-update (previous step)

# st0 = m + 1, rk ∈ st1 ↔ rk ∈ update(r0, fis, st0 -- (r0 -- sk)), st1[rk] = (update(r0, fis, st0 -- (r0 -- sk))[rk]), validFields(r0, fis, st0 -- (r0 -- sk)), r0 ∈ st0, r0 ∈ st1, onlyModified(r0, st0, st1), r0 -- sk ∈ st0, r0 -- sk ∈ st1, ∀ rk. (rk ∈ st1 -- (r0 -- sk) ↔ rk ∈ update(r0, fis, st0 -- (r0 -- sk))) ∧ (st1 -- (r0 -- sk))[rk] = (update(r0, fis, st0 -- (r0 -- sk))[rk]) ⊦ rk = r0 -- sk, st0 = ∅, st0[r0 -- sk] = st1[r0 -- sk], st1[rk] = (update(r0, fis, st0)[rk])

User applied rule structural induction

And obtained the following new goals

Proof step 53:
# st0 = m + 1, r -- sk0 ∈ st1 ↔ r -- sk0 ∈ update(r0, fis, st0 -- (r0 -- sk)), st1[r -- sk0] = (update(r0, fis, st0 -- (r0 -- sk))[r -- sk0]), validFields(r0, fis, st0 -- (r0 -- sk)), r0 ∈ st0, r0 ∈ st1, onlyModified(r0, st0, st1), r0 -- sk ∈ st0, r0 -- sk ∈ st1, ∀ rk. (rk ∈ st1 -- (r0 -- sk) ↔ rk ∈ update(r0, fis, st0 -- (r0 -- sk))) ∧ (st1 -- (r0 -- sk))[rk] = (update(r0, fis, st0 -- (r0 -- sk))[rk]) ⊦ r -- sk0 = r0 -- sk, st0 = ∅, st0[r0 -- sk] = st1[r0 -- sk], st1[r -- sk0] = (update(r0, fis, st0)[r -- sk0])

Rule argument

[VARWITHVARSEQSARG : rk, ()]

Additional information

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