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

is_fskey(fv .1) ∧ fv .1 .fs .class ≠ class1, ∀ class1, st. class1 = `java.lang.Object' .class ∨ (addclass(class1, fis0, st)[_mode]) = st[_mode] ⊦ class1 = `java.lang.Object' .class, (addclass(class1, fis0, st)[_mode]) = st[_mode]

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 22:
is_fskey(fv .1), ∀ class1, st. class1 = `java.lang.Object' .class ∨ (addclass(class1, fis0, st)[_mode]) = st[_mode] ⊦ fv .1 .fs .class = class1, (addclass(class1, fis0, st)[_mode]) = st[_mode], class1 = `java.lang.Object' .class

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]