is mentioned by

Thm* A:ioa{i:l}(), as:(LabelTerm) List, k:Label. ioa_mentions_trace(A) (i:. i < ||as|| 2of(as[i]) smts_eff(action_effect(k;A.eff;A.frame);1of(as[i]))) subst_mentions_trace(as)	[effect_subst_mentions_trace]
Thm* as:(LabelTerm) List, g:Label, t:Term. subst_mentions_trace(as) term_mentions_guard(g;term_subst2(as;t)) term_mentions_guard(g;t)	[term_subst2_mentions_guard]
Thm* as:(LabelTerm) List, g:Label, t:Term. subst_mentions_trace(as) term_mentions_guard(g;term_subst(as;t)) term_mentions_guard(g;t)	[term_subst_mentions_guard]
Thm* as:(LabelTerm) List. subst_mentions_trace(as) (i:||as||. mentions_trace(2of(as[i])))	[assert_subst_mentions_trace]

Try larger context: GenAutomata