Evosuite test cases taking too much time to execute

[Mihir shah]

I have generated test cases for almost 67 classes.It is taking around 26 minutes to execute.Is there a way to reduce this running time?

Following were my observations

1)There were around 60 errors (all test failures out of 563 test cases)Almost 2 minutes for the errors considering 2 seconds for each error 

2)One more thing I noticed that for each class there is a new runtime built for execution of test case.Is it possible to reduce these scafolding classes to one???instead of 67 scafolding classes ??