any method can find the reason why infeasible about jscipopt

[mueldgog]

Unfortunately, no. There is no API method that you could use for this. Usually, one would try to compute a minimal infeasible constraint set by replacing the objective function by a sum of binary variables that are used to "disable" constraints. For the i-th linear constraint a_i'x <= b_i you would add M * z_i to the right-hand side. z_i is a binary variable and M a constant that is sufficiently large.

For more details, you might want to have a look at https://scip.zib.de/doc-6.0.2/html/MINIISC_MAIN.php and check the corresponding literature that is mentioned.