trial 0 : semi-Markov formula equals exact bound fraction at L=1/7,3,250
trial 1 : semi-Markov formula equals exact bound fraction at L=1/7,3,250
trial 2 : semi-Markov formula equals exact bound fraction at L=1/7,3,250
trial 3 : semi-Markov formula equals exact bound fraction at L=1/7,3,250
trial 4 : semi-Markov formula equals exact bound fraction at L=1/7,3,250
