Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:21:00 2012

Optimize a model with 9396 rows, 3422 columns and 31378 nonzeros
Presolve time: 0.08s
Presolved: 9396 rows, 3422 columns, 31687 nonzeros
Variable types: 0 continuous, 3422 integer (3422 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 2.000000e+00, 3694 iterations, 0.15 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    2.00000    0  116   35.00000    2.00000  94.3%     -    0s
H    0     0                      10.0000000    2.00000  80.0%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -    5s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -    8s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -   12s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -   15s
     0     0    2.00000    0  116    5.00000    2.00000  60.0%     -   18s
H    0     0                       4.0000000    2.00000  50.0%     -   20s
     0     2    2.00000    0  116    4.00000    2.00000  50.0%     -   26s
     1     3    2.40000    1  779    4.00000    2.00000  50.0% 21467   30s
     3     5    3.00000    2  255    4.00000    2.40000  40.0% 14268   36s
    54    12    2.50000    2  303    4.00000    2.50000  37.5%  1163   40s

Cutting planes:
  Clique: 84
  Zero half: 13

Explored 139 nodes (142765 simplex iterations) in 43.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%