求各位大神帮忙，我用mrobit模型进行计量，数据量也就是一万个，但是虚拟变量较多，不知道为什么stata运行了2天都没有迭代出结果，反复是一个数字。。。。求教要如何处理啊？
Iteration 3859: log likelihood = -146.30319  (not concave)
Iteration 3860: log likelihood = -146.30319  (not concave)
Iteration 3861: log likelihood = -146.30319  (not concave)
Iteration 3862: log likelihood = -146.30319  (not concave)
Iteration 3863: log likelihood = -146.30319  (not concave)
Iteration 3864: log likelihood = -146.30319  (not concave)
Iteration 3865: log likelihood = -146.30319  (not concave)
Iteration 3866: log likelihood = -146.30319  (not concave)
Iteration 3867: log likelihood = -146.30319  (not concave)
Iteration 3868: log likelihood = -146.30319  (not concave)
Iteration 3869: log likelihood = -146.30319  (not concave)
Iteration 3870: log likelihood = -146.30319  (not concave)
Iteration 3871: log likelihood = -146.30319  (not concave)
Iteration 3872: log likelihood = -146.30319  (not concave)
Iteration 3873: log likelihood = -146.30319  (not concave)
Iteration 3874: log likelihood = -146.30319  (not concave)
Iteration 3875: log likelihood = -146.30319  (not concave)
Iteration 3876: log likelihood = -146.30319  (not concave)
Iteration 3877: log likelihood = -146.30319  (not concave)