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Proof step 16 from proof junkrefs-notin (previous step)

st[r0 -- mkfs(class, ty0, fieldvar) '] = refval(r1), acc + r ' = r1 ' + refs, mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r0 -- _type] .type .class), junkrefs(str, r1 ' + refs, ty0, st), is_obj(str, r0, st), st[r0 -- _type] .type ≤ ty, ∀ str, r, refs0, ty, st. (junkrefs(str, acc + r ' + refs0, ty, st) ↔ junkrefs(str, acc + r ', ty, st)) ∨ r ∈ st ⊦ r0 = jvmref, r ∈ st, junkrefs(str, acc + r ' + refs0, ty0, st), ¬ r1 ∈ acc ∧ r1 ≠ r, r ≠ r1 ∧ ¬ r ∈ refs

User applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 7, [extquanttermlist: (str, r, refs0, ty0, st) abort:F , discard:T , computed:T ]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1])], [EXTRATERMS : (str, r, refs0, ty0, st)]]