Try to increase Constant Folding Timeout value.This can be done in two ways:
1. At the command line, create a configuration object for code generation. Set the property ConstantFoldingTimeout to the value that you want, like 400000:
c = coder.confi;
c.ConstantFoldingTimeout = 4e5;
2. In the Project Settings dialog box, on the All Settings tab, set the field Constant folding timeout to the value that you want.