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Proof step 21 from proof ac-init-02 (previous step)

fs = mkfs(class, ty, fieldvar), initerror(class1, addclass(class1, fis0, st)), ∀ class1, st. initerror(class1, addclass(class1, fis0, st)) → mkfs(class1, void_type, `initstate' .field) ' ∈ fis0 ⊦ class = class1, mkfs(class1, void_type, `initstate' .field) = fs, mkfs(class1, void_type, `initstate' .field) ' ∈ fis0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 20:
initerror(class1, addclass(class1, fis0, st)), ∀ class1, st. initerror(class1, addclass(class1, fis0, st)) → mkfs(class1, void_type, `initstate' .field) ' ∈ fis0 ⊦ class = class1, mkfs(class1, void_type, `initstate' .field) ' ∈ fis0

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkfs(class1, ty, fieldvar) = mkfs(class2, ty0, fieldvar0) ↔ ¬ ¬ ( class1 = class2 ∧ ty = ty0 ∧ fieldvar = fieldvar0)])]]