you are configured to request 1.6 Tb of memory from your operating system:
>> 00:0000:00000:00000:2015/12/22 07:28:46.11 kernel os_create_region: can't allocate 1843200000000 bytes
My guess is that you don't have that much memory on your OS. Adjust "total memory" or go through whatever SAP configuration step you need to to adjust your total memory requirements for ASE. Typically this is done in the $SYBASE/$SYBASE_ASE/<sid>.cfg file.