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Proof step 15 from proof instore-addobj-rec (previous step)

⊦ r = r1, instore(r, class, [], addobj(r1, class1, fis1, st)) ↔ instore(r, class, [], st)

User applied rule case distinction

And obtained the following new goals

Proof step 7:
instore(r, class, [], addobj(r1, class1, fis1, st)) ⊦ instore(r, class, [], st), r = r1
Proof step 14:
instore(r, class, [], st) ⊦ instore(r, class, [], addobj(r1, class1, fis1, st)), r = r1

Rule argument

[CASEDARG : pos: right 2, ()]

Additional information

[[CONCRETESIMPRULES : ()]]