how to avoid panic crash due to overflow of kernel variable os_refcnt

I am developing code that is highly CPU intensive and there is a crash consistently every 16 hours or so. The only programs used are the tcsh shell and gnu compilers, + the compiled code that I am running. I have no idea about what is causing this system counter variable to overflow, but would like to adjust my code to avoid it. I am running 12 threads in parallel on 12 separate processes. Have reset all of the shell variables at the end of using them and have placed 3 external fans to blow at the base of cylindrical MacPro stack, since a Google search suggested one thing kernel does is adjust program execution to avoid overheating. The shell writes code, compiles the code and runs the code over & over again on the order of 10^8-10^9 times on different data combinations and analyzes the output.

Top of crash report:

panic(cpu 8 caller 0xffffff801c4c357e): "os_refcnt: overflow (rc=0xffffff801c6c7f98)\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.101.6/libkern/os/refcnt.c:58

Backtrace (CPU 8), Frame : Return Address

0xffffff9246aab610 : 0xffffff801bd215cd

0xffffff9246aab660 : 0xffffff801be5a3c5

0xffffff9246aab6a0 : 0xffffff801be4bf7e

0xffffff9246aab6f0 : 0xffffff801bcc7a40

0xffffff9246aab710 : 0xffffff801bd20c97

0xffffff9246aab810 : 0xffffff801bd21087

0xffffff9246aab860 : 0xffffff801c4c2c7c

0xffffff9246aab8d0 : 0xffffff801c4c357e

0xffffff9246aab8e0 : 0xffffff801be418e9

0xffffff9246aab910 : 0xffffff801be24ab6

0xffffff9246aab940 : 0xffffff801bd4fb4c

0xffffff9246aab9b0 : 0xffffff801c271e6d

0xffffff9246aaba10 : 0xffffff801c260dac

0xffffff9246aabdd0 : 0xffffff801c268c4e

0xffffff9246aabe50 : 0xffffff801c269de2

0xffffff9246aabef0 : 0xffffff801c269a39

0xffffff9246aabf40 : 0xffffff801c3875f7

0xffffff9246aabfa0 : 0xffffff801bcc8206

BSD process name corresponding to current thread: tcsh

Mac OS version:

19E287

Kernel version:

Darwin Kernel Version 19.4.0: Wed Mar  4 22:28:40 PST 2020; root:xnu-6153.101.6~15/RELEASE_X86_64

Kernel UUID: AB0AA7EE-3D03-3C21-91AD-5719D79D7AF6

Kernel slide:     0x000000001ba00000

Kernel text base: 0xffffff801bc00000

__HIB  text base: 0xffffff801bb00000

System model name: MacPro6,1 (Mac-F60DEB81FF30ACF6)

System shutdown begun: NO

Panic diags file available: YES (0x0)

System uptime in nanoseconds: 66900862104912

last loaded kext at 12343172427: @fileutil      20.036.15 (addr 0xffffff7f9d17f000, size 114688)

last unloaded kext at 195349879019: >usb.!UHostPacketFilter     1.0 (addr 0xffffff7f9d361000, size 24576)