Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:08:01 2012

Optimize a model with 8492 rows, 3306 columns and 28498 nonzeros
Presolve removed 86 rows and 116 columns
Presolve time: 0.19s
Presolved: 8406 rows, 3190 columns, 27937 nonzeros
Variable types: 0 continuous, 3190 integer (3190 binary)
Found heuristic solution: objective 57.0000000

Root relaxation: objective 2.500000e+00, 5756 iterations, 0.69 seconds

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

     0     0    2.50000    0  148   57.00000    2.50000  95.6%     -    2s
H    0     0                      53.0000000    2.50000  95.3%     -    2s
H    0     0                      45.0000000    2.50000  94.4%     -    2s
H    0     0                       5.0000000    2.50000  50.0%     -    2s
     0     0    3.00935    0 1976    5.00000    3.00935  39.8%     -    3s
     0     0    3.00935    0 1977    5.00000    3.00935  39.8%     -    4s
H    0     0                       4.0000000    3.00935  24.8%     -    4s

Cutting planes:
  Clique: 28
  Zero half: 2

Explored 0 nodes (22436 simplex iterations) in 4.70 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%