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Proof step 6 from proof validstatfields-class-01 (previous step)

initdone(class, st), tdname∃(str, class), mkfs(class0, ty, fieldvar) ' ∈ statfields(class), jvmref -- mkfs(class0, ty, fieldvar) ' ∈ st, type∃(str, ty), validval(str, st[jvmref -- mkfs(class0, ty, fieldvar) '], ty, st), jvmref ∈ st ⊦ ty = void_type, tdname∃(str, class0) ∧ mkfs(class0, ty, fieldvar) ' ∈ statfields(class0)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ class ≠ class0 → ¬ mkfs(class0, ty, fieldvar) ' ∈ statfields(class)

Rule argument

[speclemmaarg: ,class ≠ class0 → ¬ mkfs(class0, ty, fieldvar) ' ∈ statfields(class) ,[class, fieldvar, ty, class0] → [class, fieldvar, ty, class0] ,F ,addfuns , ,statfields-same-class-01 ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (class, fieldvar, ty, class0)]]