On Scarebus the following applies re take-off performance:
FLEX => balanced take-off (TOD=ASD)
TOGA => unbalanced take-off
Thus, if using FLEX and an abort is initiated at V1, the A/C comes to a stop at the end of the runway, provided flexing to the maximum possible for that runway.
Some operators even have programs on their laptops that tell them how many meters will remain in case of aborting (e.g. 10 meters).