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Proof step 9 from proof validrefs-delete (previous step)

st[r0 -- mkfs(class, ty0, fieldvar) '] = refval(r2), is_obj(str, r0, st), st[r0 -- _type] .type ≤ ty, mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r0 -- _type] .type .class), validrefs(str, r2 ' + refs, ty0, st -- r), ∀ str0, ty1, st0, r1. validrefs(str0, r2 ' + refs, ty1, st0 -- r1) → validrefs(str0, r2 ' + refs, ty1, st0) ⊦ r0 = jvmref, r = r0, validrefs(str, r2 ' + refs, ty0, st)

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 6, [QUANTTERMLIST : (str, ty0, st, r)]]

Additional information

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