starting
round 0 trimming to 15 trying 4peak model... converged. score:  9515880555236.97
round 1 trimming to 20 trying 4peak model... converged. score:  8911896793635.29
round 2 trimming to 25 trying 4peak model... converged. score:  8278010660966.41
round 3 trimming to 30 trying 4peak model... converged. score:  8012064749163.44
done