Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:52:27 2012

Optimize a model with 8287 rows, 3192 columns and 27774 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.18s
Presolved: 8285 rows, 3190 columns, 27478 nonzeros
Variable types: 0 continuous, 3190 integer (3190 binary)
Found heuristic solution: objective 56.0000000

Root relaxation: objective 2.000000e+00, 2464 iterations, 0.07 seconds

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

     0     0    2.00000    0  112   56.00000    2.00000  96.4%     -    0s
H    0     0                      50.0000000    2.00000  96.0%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0 1038    5.00000    3.00000  40.0%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
     0     0    3.00000    0 1643    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   74    4.00000    3.00000  25.0%     -    2s

Cutting planes:
  Clique: 6
  Zero half: 3

Explored 0 nodes (19000 simplex iterations) in 2.98 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%