Gurobi 5.0.1 (linux64) logging started Fri Nov 16 07:33:49 2012

Optimize a model with 11780 rows, 3906 columns and 38998 nonzeros
Presolve time: 0.10s
Presolved: 11780 rows, 3906 columns, 39301 nonzeros
Variable types: 0 continuous, 3906 integer (3906 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 2.000000e+00, 6826 iterations, 1.06 seconds

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

     0     0    2.00000    0  124   39.00000    2.00000  94.9%     -    3s
H    0     0                      11.0000000    2.00000  81.8%     -    3s
H    0     0                       6.0000000    2.00000  66.7%     -    3s
H    0     0                       5.0000000    2.00000  60.0%     -    3s
     0     0    2.00000    0  124    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  124    5.00000    2.00000  60.0%     -    9s
     0     0    2.00000    0  124    5.00000    2.00000  60.0%     -   16s
     0     0    2.00000    0  124    5.00000    2.00000  60.0%     -   21s
     0     0    2.00000    0  124    5.00000    2.00000  60.0%     -   26s
     0     0    2.00000    0  124    5.00000    2.00000  60.0%     -   30s
     0     2    2.00000    0  124    5.00000    2.00000  60.0%     -   46s
     1     3    3.00000    1  573    5.00000    2.00000  60.0% 45707   60s
     2     4    3.00000    1  789    5.00000    3.00000  40.0% 29695   65s
*   11     6               8       4.0000000    3.00000  25.0%  5877   66s
    24     1 infeasible    2         4.00000    3.00000  25.0%  3415   70s

Cutting planes:
  Clique: 53

Explored 28 nodes (155278 simplex iterations) in 71.57 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%