Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:11:20 2012

Optimize a model with 3108 rows, 1406 columns and 10582 nonzeros
Presolve removed 518 rows and 0 columns
Presolve time: 0.06s
Presolved: 2590 rows, 1406 columns, 9472 nonzeros
Variable types: 0 continuous, 1406 integer (1406 binary)
Found heuristic solution: objective 22.0000000

Root relaxation: objective 3.000000e+00, 2840 iterations, 0.18 seconds

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

     0     0    3.00000    0   46   22.00000    3.00000  86.4%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   45    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   59    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   55    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   63    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   46    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   62    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   87    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   87    4.00000    3.00000  25.0%     -    2s
     0     2    3.00000    0   87    4.00000    3.00000  25.0%     -    2s
     9     8    3.00000    1   91    4.00000    3.00000  25.0%   111    5s

Cutting planes:
  Gomory: 1

Explored 34 nodes (58209 simplex iterations) in 8.60 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%