Intel® Fortran Compiler XE 13.1 User and Reference Guides
An Intel Fortran program can terminate in a number of ways. On Linux* OS and OS X*, values are returned to the shell.
The program runs to normal completion. A value of zero is returned.
The program stops with a STOP statement. If an integer stop-code is specified, a status equal to the code is returned; if no stop-code is specified, a status of zero is returned.
The program stops because of a signal that is caught but does not allow the program to continue. A value of 1 is returned.
The program stops because of a severe run-time error. The error number for that run-time error is returned. See Understanding Run-Time Errors and related topics.
The program stops with a CALL EXIT statement. The value passed to EXIT is returned.
The program stops with a CALL ABORT statement. A value of 134 is returned.