Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:04:03 2012

Optimize a model with 5663 rows, 2352 columns and 19102 nonzeros
Presolve removed 1634 rows and 2 columns
Presolve time: 0.13s
Presolved: 4077 rows, 2350 columns, 17494 nonzeros
Variable types: 0 continuous, 2350 integer (2350 binary)
Found heuristic solution: objective 48.0000000

Root relaxation: objective 3.000000e+00, 4783 iterations, 0.61 seconds

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

     0     0    3.00000    0   52   48.00000    3.00000  93.8%     -    2s
H    0     0                      33.0000000    3.00000  90.9%     -    2s
H    0     0                      11.0000000    3.00000  72.7%     -    2s
H    0     0                       5.0000000    3.00000  40.0%     -    2s
     0     0    3.00000    0  150    5.00000    3.00000  40.0%     -    2s
H    0     0                       4.0000000    3.00000  25.0%     -    2s
     0     0    3.00000    0   88    4.00000    3.00000  25.0%     -    4s
     0     0    3.00000    0   74    4.00000    3.00000  25.0%     -    5s
     0     0    3.00000    0  115    4.00000    3.00000  25.0%     -    7s
     0     0    3.00000    0  128    4.00000    3.00000  25.0%     -    9s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    9s

Cutting planes:
  Clique: 1
  Zero half: 57

Explored 0 nodes (56439 simplex iterations) in 9.91 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%