Internal Error: Sub-system: VPR20KMAIN altera_arch_route_lookahead

Hi @RichardTanSY_Altera

Update on the progress. I did update from 17.0 to 19.1 (latest version currently available within the company) and the issue persists.

Problem Details
Error:
Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/altera_arch_common/altera_arch_route_lookahead.cpp, Line: 4320
Internal Error
Stack Trace:
0xc7b1c: vpr_qi_jump_to_exit + 0x68 (fitter_vpr20kmain)
0x31d188: vpr_exit_at_line + 0x75 (fitter_vpr20kmain)
0x1ba337: aa_route_lookahead_setup_cached_lookahead_constants.cold.10901 + 0x311 (fitter_vpr20kmain)
0x1aee1e: aa_route_alg_route_all_nets.cold.10872 + 0x342 (fitter_vpr20kmain)
0x2d9f4d: l_rt_prl_worker(void*) + 0xeb (fitter_vpr20kmain)
0xd6477: l_thread_start_wrapper(void*) + 0x29 (fitter_vpr20kmain)
0x40e04: msg_thread_wrapper(void* (*)(void*), void*) + 0x6e (ccl_msg)
0x11bec: mem_thread_wrapper(void* (*)(void*), void*) + 0x5c (ccl_mem)
0xc2ee: err_thread_wrapper(void* (*)(void*), void*) + 0x27 (ccl_err)
0x6cc5: thr_thread_wrapper + 0x15 (ccl_thr)
0x704e: thr_thread_begin + 0x2e (ccl_thr)
0x7fa3: start_thread + 0xf3 (pthread)
0xf94cf: clone + 0x3f (c)

End-trace

Executable: quartus
Comment:
None

System Information
Platform: linux64
OS name: Debian GNU/Linux
OS version: 10

Quartus Prime Information
Address bits: 64
Version: 19.1.0
Build: 240
Edition: Pro Edition