Witness Visualizer sometimes misses source files

[vmordan]

How to preproduce:

Linux kernel module drivers/usb/dwc3/dwc3-exynos.ko

Error message:
There is no file /ssd/jobs/d8300fee-df33-429d-b1a7-8b861f038c7e/klever-core-work-dir/job/vrp/drivers/usb/dwc3/dwc3-exynos.ko/0/memory safety with mea/cil.i

[mutilin]

/cc @Druidos