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Proof step 4 from proof validstatfields-initundone (previous step)

statfields(class) = mkfs(class0, ty, fieldvar) ' ' + sks, tdname∃(str, class0), mkfs(class0, ty, fieldvar) ' ∈ statfields(class0), mkfs(class0, ty, fieldvar) ' ∈ statfields(class), initdone(class0, st) → validfield(str, jvmref, mkfs(class0, ty, fieldvar) ', st) ⊦ statfields(class) = [], tdname∃(str, class), initdone(class, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ 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)]]