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Proof step 23 from proof ac-bad (previous step)

is_indexkey(sk), ∀ class1, class2, ty, fieldvar, val, fis1, st. class1 = class2 ∨ addclass(class1, fis0 + (mkfs(class2, ty, fieldvar) ' × val) ' + fis1, st) = addclass(class1, fis0 + fis1, st) ⊦ class1 = class2, addclass(class1, fis0 + (mkfs(class2, ty, fieldvar) ' × val) ' + fis1, st) = addclass(class1, fis0 + fis1, st)

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 2, [QUANTTERMLIST : (class1, class2, ty, fieldvar, val, fis1, st)]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (class1, class2, ty, fieldvar, val, fis1, st)]]