Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:34:07 2012

Optimize a model with 9381 rows, 3540 columns and 31447 nonzeros
Presolve time: 0.08s
Presolved: 9381 rows, 3540 columns, 31759 nonzeros
Variable types: 0 continuous, 3540 integer (3540 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 2.000000e+00, 3217 iterations, 0.12 seconds

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

     0     0    2.00000    0  118   38.00000    2.00000  94.7%     -    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  118    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    4s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    8s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -   12s
H    0     0                       4.0000000    2.00000  50.0%     -   12s
     0     0    2.00000    0  118    4.00000    2.00000  50.0%     -   16s
     0     0    2.00000    0  118    4.00000    2.00000  50.0%     -   19s
     0     2    2.00000    0  118    4.00000    2.00000  50.0%     -   31s
     1     3    2.50000    1  119    4.00000    2.00000  50.0% 22550   35s
     2     4    2.50000    1  527    4.00000    2.50000  37.5% 17953   40s
    41     7    3.00000    5  159    4.00000    2.50000  37.5%  1433   45s
   113     9    3.00000    4  112    4.00000    2.57143  35.7%   738   50s

Cutting planes:
  Clique: 141

Explored 161 nodes (153576 simplex iterations) in 51.02 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%