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Proof step 14 from proof cyclic-def-object (previous step)

st[r -- mkfs(class, ty, fieldvar) '] = refval(r0), st[r -- _type] .type ≤ mkclasstype(`java.lang.Object' .class), is_obj(str, r, st), mkfs(class, ty, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), is_referencevalue(st[r -- mkfs(class, ty, fieldvar) ']), validrefs(str, r0 ' + refs, ty, st) ⊦ r = jvmref, ∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ']) ∧ r0 = st[r -- fs '] .refval ∧ validrefs(str, r0 ' + refs, fs .type, st), r ≠ r0 ∧ ¬ r ∈ refs ∧ ¬ r0 ∈ refs ∧ ¬ dups(refs)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
st[r -- mkfs(class, ty, fieldvar) '] = refval(r0), validrefs(str, r0 ' + refs, ty, st), mkfs(class, ty, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), is_obj(str, r, st), st[r -- _type] .type ≤ mkclasstype(`java.lang.Object' .class) ⊦ r = jvmref, ∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ']) ∧ r0 = st[r -- fs '] .refval ∧ validrefs(str, st[r -- fs '] .refval ' + refs, fs .type, st), r ≠ r0 ∧ ¬ r ∈ refs ∧ ¬ r0 ∈ refs ∧ ¬ dups(refs)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_referencevalue(refval(r))])]]