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Proof step 49 from proof validrefs-primarray (previous step)

st[r -- _length] = intval(i), okreftype(refval(r), mkarraytype(ty), st), r -- _length ∈ st, is_integervalue(st[r -- _length]), is_arrayref(r, i, st), is_primtype(ty), r ∈ st, 0 ≤ i, ¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ mkarraytype(ty), ∀ j. ¬ j < 0 ∧ ¬ i ≤ j → okval(st[r -- j '], ty) ⊦ r = jvmref

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 48:
st[r -- _length] = intval(i), 0 ≤ i, r ∈ st, is_primtype(ty), is_arrayref(r, i, st), r -- _length ∈ st, okreftype(refval(r), mkarraytype(ty), st), ∀ j. ¬ j < 0 ∧ ¬ i ≤ j → okval(st[r -- j '], ty), ¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ mkarraytype(ty) ⊦ r = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_integervalue(intval(i))], [CSIMPFORWARD : ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j])]]