Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:23:54 2012

Optimize a model with 7038 rows, 2652 columns and 23562 nonzeros
Presolve time: 0.07s
Presolved: 7038 rows, 2652 columns, 24161 nonzeros
Variable types: 0 continuous, 2652 integer (2652 binary)
Found heuristic solution: objective 31.0000000

Root relaxation: objective 2.000000e+00, 3347 iterations, 0.16 seconds

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

     0     0    2.00000    0  102   31.00000    2.00000  93.5%     -    0s
H    0     0                       9.0000000    2.00000  77.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    2s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    5s
H    0     0                       4.0000000    2.00000  50.0%     -    5s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -    6s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -    8s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -   10s
     0     2    2.00000    0  102    4.00000    2.00000  50.0%     -   17s
     1     3    3.00000    1  361    4.00000    2.00000  50.0% 26475   23s
     2     4    3.00000    1  336    4.00000    3.00000  25.0% 17683   26s
    19     7    3.00000    5   92    4.00000    3.00000  25.0%  2947   30s
    53     5     cutoff    7         4.00000    3.00000  25.0%  1867   35s
   123     3     cutoff    6         4.00000    3.00000  25.0%  1134   40s

Cutting planes:
  Clique: 108

Explored 143 nodes (190574 simplex iterations) in 41.20 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%