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Proof step 52 from proof union-addarray-rew (previous step)

∃ fs. sk = fs ', newref(r0, st), newref(r0, st0), sk ≠ _length ∧ sk ≠ _type ∨ is_indexkey(sk) ∧ (sk .index < 0 ∨ n→i(# vals) ≤ sk .index) ⊦ r0 = jvmref, (r0 -- sk ∈ addarray(r0, ty, vals, st0) → r0 -- sk ∈ st ∨ r0 -- sk ∈ st0) ∧ (st ∪ st0)[r0 -- sk] = (st ∪ addarray(r0, ty, vals, st0))[r0 -- sk]

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 44:
fs ' ≠ _type, fs ' ≠ _length ⊦ r -- fs ' ∈ addarray(r0, ty, vals, st) ↔ r -- fs ' ∈ st
Proof step 51:
newref(r0, st), newref(r0, st0) ⊦ r0 = jvmref, fs ' = _type, fs ' = _length, (st ∪ st0)[r0 -- fs '] = (st ∪ addarray(r0, ty, vals, st0))[r0 -- fs ']

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_indexkey(fs ')])]]