Gurobi 5.0.1 (linux64) logging started Fri Nov 16 11:52:55 2012

Optimize a model with 16259 rows, 5112 columns and 53605 nonzeros
Presolve time: 0.12s
Presolved: 16259 rows, 5112 columns, 53702 nonzeros
Variable types: 0 continuous, 5112 integer (5112 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 2.000000e+00, 4845 iterations, 0.19 seconds

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

     0     0    2.00000    0  142   43.00000    2.00000  95.3%     -    1s
H    0     0                      15.0000000    2.00000  86.7%     -    1s
H    0     0                       5.0000000    2.00000  60.0%     -    1s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -    2s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -   11s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -   20s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -   35s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -   43s
     0     0    2.00000    0  142    5.00000    2.00000  60.0%     -   49s
     0     2    2.00000    0  142    5.00000    2.00000  60.0%     -   64s
     1     3    2.57143    1  255    5.00000    2.00000  60.0% 69881   82s
     2     4    2.50000    1 1008    5.00000    2.50000  50.0% 51624   96s
    19    13    4.00000   13  102    5.00000    2.50000  50.0%  6158  100s
*   32     9              25       4.0000000    2.50000  37.5%  3810  101s
    59    11    3.00000    6  130    4.00000    3.00000  25.0%  2265  107s
    81     1     cutoff    8         4.00000    3.00000  25.0%  1884  110s

Cutting planes:
  Clique: 109

Explored 87 nodes (279265 simplex iterations) in 110.06 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%