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Proof step 37 from proof junkref-array (previous step)

st[r -- i '] = refval(r0), st[r0 -- _type] .type ≤ st[r -- _type] .type .type, 0 < st[r -- _length] .intval, 0 ≤ i, i < st[r -- _length] .intval, is_array(str, r, st), junkrefs(str, r0 ' + refs0, st[r0 -- _type] .type, st) ⊦ r0 = jvmref, ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[refs .first -- _type] .type, st)

User applied rule exists right

And obtained the following new goals

Proof step 36:
st[r -- i '] = refval(r0), st[r0 -- _type] .type ≤ st[r -- _type] .type .type, 0 < st[r -- _length] .intval, 0 ≤ i, i < st[r -- _length] .intval, is_array(str, r, st), junkrefs(str, r0 ' + refs0, st[r0 -- _type] .type, st) ⊦ r0 = jvmref, r ' + r0 ' + refs0 ≠ [] ∧ (r ' + r0 ' + refs0) .first = r ∧ junkrefs(str, r ' + r0 ' + refs0, st[(r ' + r0 ' + refs0) .first -- _type] .type, st)

Rule argument

[EXRARG : pos: right 2, [extquanttermlist: (r ' + r0 ' + refs0) abort:F , discard:T , computed:F ]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (r ' + r0 ' + refs0)]]