level1_2.out

0.500 1 arrives
0.500 1 serves by server 1
0.600 2 arrives
0.600 2 waits at server 1
0.700 3 arrives
0.700 3 leaves
1.500 1 done serving by server 1
1.500 2 serves by server 1
1.500 4 arrives
1.500 4 waits at server 1
1.600 5 arrives
1.600 5 leaves
1.700 6 arrives
1.700 6 leaves
2.500 2 done serving by server 1
2.500 4 serves by server 1
3.500 4 done serving by server 1
[0.633 3 3]