iverilog simulation passed!

iverilog cmd 1:
~/bin/bin/iverilog -g2012 -o run.vvp shift18_tb.v shift18.v 
iverilog cmd 1 output:

iverilog cmd 1 error:

iverilog cmd 2:
~/bin/bin/vvp run.vvp
iverilog cmd 2 output:
shift18_tb.v:139: $finish called at 290000 (1ps)

iverilog cmd 2 error: