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Proof step 24 from proof addobj-union (previous step)

newref(r, st0), newref(r, st) ⊦ r = jvmref, (rk ∈ addobj(r, class, fis, st) ∪ st0 ↔ rk ∈ addobj(r, class, fis, st ∪ st0)) ∧ (addobj(r, class, fis, st) ∪ st0)[rk] = (addobj(r, class, fis, st ∪ st0)[rk])

User applied rule structural induction

And obtained the following new goals

Proof step 23:
newref(r, st0), newref(r, st) ⊦ r = jvmref, (r0 -- sk ∈ addobj(r, class, fis, st) ∪ st0 ↔ r0 -- sk ∈ addobj(r, class, fis, st ∪ st0)) ∧ (addobj(r, class, fis, st) ∪ st0)[r0 -- sk] = (addobj(r, class, fis, st ∪ st0)[r0 -- sk])

Rule argument

[VARWITHVARSEQSARG : rk, ()]

Additional information

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