$timescale
     1 ps
$end

$scope module SystemC $end
$var wire    1  aaaaa  clk1       $end
$var wire    1  aaaab  clk2       $end
$upscope $end
$enddefinitions  $end

$comment
All initial values are dumped below at time 0 sec = 0 timescale units.
$end

$dumpvars
0aaaaa
0aaaab
$end

#3000
1aaaab

#5000
1aaaaa

#9000
0aaaab

#10000
0aaaaa

#15000
1aaaaa
1aaaab

#20000
0aaaaa

#21000
0aaaab

#25000
1aaaaa

#27000
1aaaab

#30000