proposition: Lemma bounded_fulfillAR_step s t : bounded T (fulfillAR_step s t).
proof: Proof. move => X _. exact: subsep. Qed.
imports: mathcomp.ssreflect.ssreflect mathcomp(all_ssreflect) CompDecModal.libs(edone bcase fset base sltype) CompDecModal.CTL(CTL_def dags)