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Proof step 14 from proof validrefs-append (previous step)

acc + r ' = r1 ' + refs, st[r0 -- mkfs(class, ty1, fieldvar) '] = refval(r1), is_obj(str, r0, st), validrefs(str, r ' + refs0, ty0, st), st[r0 -- _type] .type ≤ ty, mkfs(class, ty1, fieldvar) ' ∈ instfields(st[r0 -- _type] .type .class), validrefs(str, acc + r ', ty1, st), ∀ str, r, refs0, ty0, st, ty. validrefs(str, r ' + refs0, ty0, st) ∧ validrefs(str, acc + r ', ty, st) → validrefs(str, acc + r ' + refs0, ty, st) ⊦ r0 = jvmref, validrefs(str, acc + r ' + refs0, ty1, st), r ≠ r1 ∧ ¬ r ∈ refs, ¬ r1 ∈ acc ∧ r1 ≠ r

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 8, [QUANTTERMLIST : (str, r, refs0, ty0, st, ty1)]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1])], [EXTRATERMS : (str, r, refs0, ty0, st, ty1)]]