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Proof step 24 from proof validrefs-set-null (previous step)

refs0 .first = st[r -- fs0 '] .refval, fs ' ∈ instfields(st[r -- _type] .type .class), is_obj(str, r, st), is_reftype(fs .type), fs0 ' ∈ instfields(st[r -- _type] .type .class), is_referencevalue(st[r -- fs0 ']), validrefs(str, refs0, fs0 .type, st), is_obj(str, r, st[r -- fs ', refval(jvmref)]), st[r -- _type] .type ≤ ty ⊦ r = jvmref, refs0 = [], _type = fs ', ∃ fs1. fs1 ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ', refval(jvmref)][r -- fs1 ']) ∧ jvmref = (st[r -- fs ', refval(jvmref)][r -- fs1 ']) .refval

Heuristic quantifier closing applied rule exists right

And closed the goal!

Rule argument

[EXRARG : pos: right 4, [QUANTTERMLIST : (fs)]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (st[rk, val][rk]) = val], [CSIMPSEQ : ⊦ is_referencevalue(refval(r))], [CSIMPSEQ : ⊦ refval(r) .refval = r])], [EXTRATERMS : (fs)]]