Forrtl:severe (157): Program exception-access violation

This is a common error encountered in FORTRAN, access violation generally access to inaccessible memory.

Individuals encounter several situations:

Array-out-of-bounds Error: Array out of bounds

Stack overflow: Stack space overflow---is usually the program passed more variables, resulting in insufficient stack space, you can set the size of the stack space to solve. You should try to avoid passing large variables (arrays)

Stack trace terminated abnormally: stack abnormal exit---usually caused by allocate memory not released, pay attention to the allocate after the judgment, and remember deallocate

Forrtl:severe (157): Program exception-access violation