cannot interrupt process !AC
    Facility: DEBUG, VMS Debugger
    Explanation: The debugger could not interrupt the specified
    process because it was deleted. This message usually indicates
    that the specified process terminated abnormally-either via the
    DCL STOP command or via a call to $DELPRC.
    User Action: The debugger failed to interrupt the process. Unless
    the reason for this is apparent, submit a Software Performance
    Report (SPR).