Are you referring to this line?
Memory: 3960588K/4193764K available (14339K kernel code, 2370K rwdata, 4684K rodata, 2660K init, 5076K bss, 233176K reserved, 0K cma-reserved)
Looking at that line I cannot make that be 4 GiB?
Using free with default (free) shows total memory as 4030596 KiB...