Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:13:11 2012

Optimize a model with 2963 rows, 1482 columns and 10182 nonzeros
Presolve removed 420 rows and 2 columns
Presolve time: 0.10s
Presolved: 2581 rows, 1480 columns, 10504 nonzeros
Variable types: 0 continuous, 1480 integer (1480 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 3.000000e+00, 1823 iterations, 0.10 seconds

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

     0     0    3.00000    0   52   38.00000    3.00000  92.1%     -    0s
H    0     0                      35.0000000    3.00000  91.4%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   62    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   45    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   44    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   54    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   41    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   50    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   26    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   56    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   54    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   56    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   56    4.00000    3.00000  25.0%     -    2s
     0     2    3.00000    0   56    4.00000    3.00000  25.0%     -    3s
     6     6    3.00000    1   48    4.00000    3.00000  25.0%   192    5s

Cutting planes:
  Gomory: 1
  Zero half: 2

Explored 20 nodes (76371 simplex iterations) in 8.88 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%