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Proof step 13 from proof validstatfield-addclass-other (previous step)

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

User applied rule cut formula

And obtained the following new goals

Proof step 12:
is_reftype(ty), initdone(class0, st), mkfs(class0, ty, fieldvar) ' ∈ statfields(class0), tdname∃(str, class0), type∃(str, ty), jvmref -- mkfs(class0, ty, fieldvar) ' ∈ st, okval(st[jvmref -- mkfs(class0, ty, fieldvar) '], ty), jvmref ∈ st ⊦ ty = void_type, class0 = class, class = `java.lang.Object' .class, is_reftype(ty) → validrefval(str, st[jvmref -- mkfs(class0, ty, fieldvar) '], ty, addclass(class, fis, st)) ↔ is_reftype(ty) → validrefval(str, st[jvmref -- mkfs(class0, ty, fieldvar) '], ty, st)

Rule argument

[fma-arg: is_reftype(ty)]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRAFMAS : (is_reftype(ty))]]