fact: Definition chktrack (intruder evader : State) (tpred : R) : Prop := let tau := tau intruder evader 0 in match Rle_dec tau 0 with | left _ => chkrange (RR intruder evader 0) tpred | right _ => match Rlt_dec AlertTime (tpred + tau) with | left _ => (RR intruder evader AlertTime <= AlertRange)%R | right _ => (RR intruder evader tau <= AlertRange)%R end end.
imports: Reals trajectory_const constants ails_def tau Omega