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Proof step 15 from proof ac-in-09 (previous step)

∀ r, class1, st. r = jvmref ∨ (r ∈ addclass(class1, fis0, st) ↔ r ∈ st) ⊦ r = jvmref, r ∈ addclass(class1, fis0, st) ↔ r ∈ st, class = class1

User applied rule case distinction

And obtained the following new goals

Proof step 13:
r ∈ addclass(class1, fis0, st), ∀ r, class1, st. r = jvmref ∨ (r ∈ addclass(class1, fis0, st) ↔ r ∈ st) ⊦ r ∈ st, r = jvmref, class = class1
Proof step 14:
r ∈ st, ∀ r, class1, st. r = jvmref ∨ (r ∈ addclass(class1, fis0, st) ↔ r ∈ st) ⊦ r ∈ addclass(class1, fis0, st), r = jvmref, class = class1

Rule argument

[CASEDARG : pos: right 2, ()]

Additional information

[[CONCRETESIMPRULES : ()]]