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Proof step 20 from proof addclass-okarray (previous step)

st[r -- _length] = intval(i), is_integervalue(st[r -- _length]), is_arrayref(r, i, st), _length ∈ fis ⊦ r = jvmref, okreftype(refval(r), mkarraytype(ty), addclass(class, fis, st)) ∧ r -- _length ∈ addclass(class, fis, st) ∧ 0 ≤ i ∧ (∀ j. ¬ j < 0 ∧ ¬ i ≤ j → okval(st[r -- j '], ty)) ↔ okreftype(refval(r), mkarraytype(ty), st) ∧ r -- _length ∈ st ∧ ¬ i < 0 ∧ (∀ j. 0 ≤ j ∧ j < i → okval(st[r -- j '], ty))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 19:
st[r -- _length] = intval(i), _length ∈ fis, is_arrayref(r, i, st) ⊦ okreftype(refval(r), mkarraytype(ty), addclass(class, fis, st)) ∧ r -- _length ∈ addclass(class, fis, st) ∧ 0 ≤ i ∧ (∀ j. ¬ j < 0 ∧ ¬ i ≤ j → okval(st[r -- j '], ty)) ↔ okreftype(refval(r), mkarraytype(ty), st) ∧ r -- _length ∈ st ∧ ¬ i < 0 ∧ (∀ j. 0 ≤ j ∧ j < i → okval(st[r -- j '], ty)), r = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_integervalue(intval(i))])]]