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Proof step 10 from proof validrefs-set-null (previous step)

fs0 = mkfs(class0, ty1, fieldvar0), is_referencevalue(st[r -- fs0 ']), fs0 ' ∈ instfields(st[r -- _type] .type .class), st[r -- _type] .type ≤ ty, is_reftype(ty0), is_obj(str, r, st), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), validrefs(str, st[r -- fs0 '] .refval ' + refs, ty1, st) ⊦ r = jvmref, _type = mkfs(class, ty0, fieldvar) ', validrefs(str, r ' + jvmref ', ty, st[r -- mkfs(class, ty0, fieldvar) ', refval(jvmref)]), is_obj(str, r, st[r -- mkfs(class, ty0, fieldvar) ', refval(jvmref)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
is_referencevalue(st[r -- mkfs(class0, ty1, fieldvar0) ']), mkfs(class0, ty1, fieldvar0) ' ∈ instfields(st[r -- _type] .type .class), st[r -- _type] .type ≤ ty, is_reftype(ty0), is_obj(str, r, st), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), validrefs(str, st[r -- mkfs(class0, ty1, fieldvar0) '] .refval ' + refs, ty1, st) ⊦ r = jvmref, _type = mkfs(class, ty0, fieldvar) ', validrefs(str, r ' + jvmref ', ty, st[r -- mkfs(class, ty0, fieldvar) ', refval(jvmref)]), is_obj(str, r, st[r -- mkfs(class, ty0, fieldvar) ', refval(jvmref)])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]