%Warning-WAITCONST: t/t_timing_wait1.v:52:12: Wait statement condition is constant 52 | wait(1); | ^ ... For warning description see https://verilator.org/warn/WAITCONST?v=latest ... Use "/* verilator lint_off WAITCONST */" and lint_on around source to disable this message. %Warning-WAITCONST: t/t_timing_wait1.v:54:14: Wait statement condition is constant 54 | wait(0 < 1) $write("*-* All Finished *-*\n"); | ^ %Warning-WAITCONST: t/t_timing_wait1.v:59:19: Wait statement condition is constant 59 | initial wait(1 == 0) $stop; | ^~ %Error: Exiting due to