I tried to do the following in my input file:

*STEP, NAME=STEP-1

*MATRIX GENERATE, STIFFNESS

*MATRIX OUTPUT, STIFFNESS

*END STEP

But I am getting the error message code: 

Abaqus Error: The executable standard.exe

aborted with system error code 1073741819.

Can anyone help me to figure out the error? or some other way to output the stiffness matrix?

Thanks,

Gourab