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Proof step 15 from proof validstatfield-addclass-other (previous step)

initdone(class0, st), mkfs(class0, ty, fieldvar) ' ∈ statfields(class0), tdname∃(str, class0), type∃(str, ty) ⊦ class0 = class, class = `java.lang.Object' .class, jvmref -- mkfs(class0, ty, fieldvar) ' ∈ st ∧ okval(st[jvmref -- mkfs(class0, ty, fieldvar) '], ty) ∧ (is_reftype(ty) → validrefval(str, st[jvmref -- mkfs(class0, ty, fieldvar) '], ty, addclass(class, fis, st))) ↔ goodfieldandtype(jvmref, mkfs(class0, ty, fieldvar) ', st) ∧ (is_reftype(ty) → validrefval(str, st[jvmref -- mkfs(class0, ty, fieldvar) '], ty, st)), ty = void_type

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ goodfieldandtype(r, sk, st) ↔ is_fskey(sk) ∧ r -- sk ∈ st ∧ okval(st[r -- sk], sk .fs .type)
Proof step 14:
initdone(class0, st), mkfs(class0, ty, fieldvar) ' ∈ statfields(class0), tdname∃(str, class0), type∃(str, ty) ⊦ class0 = class, class = `java.lang.Object' .class, jvmref -- mkfs(class0, ty, fieldvar) ' ∈ st ∧ okval(st[jvmref -- mkfs(class0, ty, fieldvar) '], ty) ∧ (is_reftype(ty) → validrefval(str, st[jvmref -- mkfs(class0, ty, fieldvar) '], ty, addclass(class, fis, st))) ↔ is_fskey(mkfs(class0, ty, fieldvar) ') ∧ jvmref -- mkfs(class0, ty, fieldvar) ' ∈ st ∧ okval(st[jvmref -- mkfs(class0, ty, fieldvar) '], mkfs(class0, ty, fieldvar) ' .fs .type) ∧ (is_reftype(ty) → validrefval(str, st[jvmref -- mkfs(class0, ty, fieldvar) '], ty, st)), ty = void_type

Rule argument

[speclemmaarg: , goodfieldandtype(r, sk, st) ↔ is_fskey(sk) ∧ r -- sk ∈ st ∧ okval(st[r -- sk], sk .fs .type) ,[st, sk, r] → [st, mkfs(class0, ty, fieldvar) ', jvmref] ,F ,okfuns , ,good-field-def ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, mkfs(class0, ty, fieldvar) ', jvmref)]]