message: expected/arbiter_tb.v null-> nop (';')
diff: @@ -113,31 +113,31 @@ module top;
  #10
  rst = 0;
  repeat (1) @(posedge clk)
  - null;
  + ;
  req0 <= 1;
  repeat (1) @(posedge clk)
  - null;
  + ;
  req0 <= 0;
  repeat (1) @(posedge clk)
  - null;
  + ;
  req0 <= 1;
  req1 <= 1;
  repeat (1) @(posedge clk)
  - null;
  + ;
  req2 <= 1;
  req1 <= 0;
  repeat (1) @(posedge clk)
  - null;
  + ;
  req3 <= 1;
  req2 <= 0;
  repeat (1) @(posedge clk)
  - null;
  + ;
  req3 <= 0;
  repeat (1) @(posedge clk)
  - null;
  + ;
  req0 <= 0;
  repeat (1) @(posedge clk)
  - null;
  + ;
  #10
  $finish();
  end
  