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Proof step 9 from proof validrefs-applast-class-null (previous step)

st[r -- mkfs(class, ty0, fieldvar) '] = refval(r0), r0 = jvmref, is_reftype(ty0), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), is_obj(str, r, st), is_referencevalue(st[r -- mkfs(class, ty0, fieldvar) ']), validrefs(str, refs + r ', ty, st) ⊦ validrefs(str, refs + r ' + jvmref ', ty, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
st[r -- mkfs(class, ty0, fieldvar) '] = refval(jvmref), validrefs(str, refs + r ', ty, st), is_obj(str, r, st), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), is_reftype(ty0) ⊦ validrefs(str, refs + r ' + jvmref ', ty, st)

Rule argument

[emptyarg]

Additional information

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