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Proof step 56 from proof validrefs-junkrefs (previous step)

r1 ' + refs1 = refs + r0 ' + refs0, st[r -- i '] = refval(r1), st[refs .last -- mkfs(class, ty0, fieldvar) '] = refval(r0), is_obj(refs .last, st), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[refs .last -- _type] .type .class), validrefs(str, r ' + refs, ty, st), validrefs(str, refs, st[r -- _type] .type .type, st), st[r -- _type] .type ≤ ty, 0 ≤ i, 0 < st[r -- _length] .intval, is_array(str, r, st), i < st[r -- _length] .intval, junkrefs(str, r1 ' + refs1, st[r -- _type] .type .type, st), r1 ∈ refs, is_valid_ref(str, r0, st) ⊦ refs = [], r0 = jvmref, r = jvmref, st[r0 -- _type] .type ≤ ty0, ∃ fs. fs ' ∈ instfields(st[refs .last -- _type] .type .class) ∧ is_referencevalue(st[refs .last -- fs ']) ∧ r0 = st[refs .last -- fs '] .refval ∧ ¬ st[st[refs .last -- fs '] .refval -- _type] .type ≤ fs .type

User applied rule exists right

And closed the goal!

Rule argument

[EXRARG : pos: right 5, [extquanttermlist: (mkfs(class, ty0, fieldvar)) abort:F , discard:T , computed:T ]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkfs(class, ty, fieldvar) .type = ty], [CSIMPSEQ : ⊦ is_referencevalue(refval(r))], [CSIMPSEQ : ⊦ refval(r) .refval = r])], [EXTRATERMS : (mkfs(class, ty0, fieldvar))]]