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Proof step 18 from proof validstatfield-addclass-other (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 17:
initdone(class0, st), mkfs(class0, ty, fieldvar) ' ∈ statfields(class0), tdname∃(str, class0) ⊦ class0 = class, class = `java.lang.Object' .class, jvmref -- mkfs(class0, ty, fieldvar) ' ∈ st ∧ okval(st[jvmref -- mkfs(class0, ty, fieldvar) '], ty) ∧ type∃(str, ty) ∧ ty ≠ void_type ∧ (is_reftype(ty) → validrefval(str, st[jvmref -- mkfs(class0, ty, fieldvar) '], ty, addclass(class, fis, st))) ↔ validfield(str, jvmref, mkfs(class0, ty, fieldvar) ', st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkfs(class, ty, fieldvar) .type = ty], [CSIMPSEQ : ⊦ fs ' .fs = fs], [CSIMPSEQ : class1 ≠ class2 ⊦ (addclass(class2, fis, st) [ jvmref -- mkfs(class1, ty, fieldvar) ' ] ) = st[ jvmref -- mkfs(class1, ty, fieldvar) ']], [CSIMPSEQ : class1 ≠ class2 ⊦ jvmref -- mkfs(class1, ty, fieldvar) ' ∈ addclass(class2, fis, st) ↔ jvmref -- mkfs(class1, ty, fieldvar) ' ∈ st], [CSIMPSEQ : ⊦ goodfieldandtype (r, mkfs(class1, ty, fieldvar) ', st) ↔ r -- mkfs(class1, ty, fieldvar) ' ∈ st ∧ okval (st[ r -- mkfs (class1, ty, fieldvar) '], ty)])]]