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Proof step 7 from proof compatarray-isarray (previous step)

st[r -- _length] = intval(i), st[r -- _type] = typeval(mkarraytype(ty)), 0 ≤ i, r -- _length ∈ st, is_arrayref(r, i, st), r ∈ st, r -- _type ∈ st, j < i, 0 ≤ j, 0 < i, ¬ j < 0 ∧ ¬ i ≤ j → compat(str, st[r -- j '], ty, st) ⊦ r = jvmref, okval(st[r -- j '], ty)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i < j → (¬ ¬ j ≤ i ↔ false)], [CSIMPSEQ : ⊦ i ≤ j → (¬ ¬ j < i ↔ false)])]]