At: covers pred lemma2 1 2 1 1 1 1 1 2 2
1. r: rel()
2. I: Collection(rel())
3. A: ioa{i:l}()
4. a: Label
5. r
I
6.
x:Label. (x
rel_vars(r)) 
covers_var(A;x)
7. x: Label
8.
(x
rel_primed_vars(r))
t:Term. (x
rel_primed_vars(r)) 
t
smts_eff(action_effect(a;A.eff;A.frame);x)
By: InstConcl [x]
Generated subgoals:None
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