starting
round 0 trimming to 4 trying 4peak model... converged. score:  6799908136310.42
round 1 trimming to 9 trying 4peak model... converged. score:  6216867175236.58
round 2 trimming to 14 trying 4peak model... converged. score:  25423715865516
round 3 trimming to 19 trying 4peak model... converged. score:  10113507973167.7
done