Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:28:12 2012

Optimize a model with 9405 rows, 3080 columns and 31075 nonzeros
Presolve time: 0.08s
Presolved: 9405 rows, 3080 columns, 31527 nonzeros
Variable types: 0 continuous, 3080 integer (3080 binary)
Found heuristic solution: objective 33.0000000

Root relaxation: objective 2.000000e+00, 2319 iterations, 0.06 seconds

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

     0     0    2.00000    0  110   33.00000    2.00000  93.9%     -    0s
H    0     0                      14.0000000    2.00000  85.7%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -    4s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -    7s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   10s
     0     0    2.00000    0  110    4.00000    2.00000  50.0%     -   13s
     0     0    2.00000    0  110    4.00000    2.00000  50.0%     -   16s
     0     2    2.00000    0  110    4.00000    2.00000  50.0%     -   27s
     1     3    2.50000    1  290    4.00000    2.00000  50.0% 19112   30s
     4     6    3.00000    2  104    4.00000    2.50000  37.5%  9150   35s
    55     9    3.00000    7  110    4.00000    2.66667  33.3%  1162   40s

Cutting planes:
  Clique: 110

Explored 85 nodes (127236 simplex iterations) in 40.72 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%