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Proof step 9 from proof ac-dups-02 (previous step)

⊦ addclass(class1, [] + (sk × val) ' + (sk × val0) ' + fis0, st) = addclass(class1, [] + (sk × val) ' + fis0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
⊦ addclass(class1, (sk × val) ' + (sk × val0) ' + fis0, st) = addclass(class1, (sk × val) ' + fis0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (fis + fis0) + fis1 = fis + fis0 + fis1], [CSIMPSEQ : ⊦ [] + fis = fis])]]