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Proof step 17 from proof validrefs-trans-01 (previous step)

st[r -- i '] = refval(r0), validrefs(str, r0 ' + refs1, ty0, st), is_array(str, r, st), i < st[r -- _length] .intval, validrefs(str, r0 ', st[r -- _type] .type .type, st), 0 ≤ i, 0 < st[r -- _length] .intval, st[r -- _type] .type ≤ ty, ∀ str0, ty1, st0, refs, ty2. validrefs(str0, r0 ', ty1, st0) ∧ validrefs(str0, r0 ' + refs, ty2, st0) → validrefs(str0, r0 ' + refs, ty1, st0) ⊦ r = jvmref, validrefs(str, r0 ' + refs1, st[r -- _type] .type .type, st)

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 9, [QUANTTERMLIST : (str, st[r -- _type] .type .type, st, refs1, ty0)]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (str, st[r -- _type] .type .type, st, refs1, ty0)]]