According to bounty rules:
Bounties expire after seven days. After a bounty expires, there is an additional 24 hour window for the bounty to be awarded so that late answers may be considered. If it remains unawarded and one or more answers posted during the bounty period have a score of 2 or more, half the bounty will be automatically awarded to the one with the highest score.
This Post offered a +100 bounty which had ended yesterday and the grace period also ended. 3 answers given during bounty period. 2 of them got 1 upvote (so equal score).
Still it remains unawarded. None of 2 upvoted answers got 2 score. So what will be this post's bounty distribution?