Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:12:25 2012

Optimize a model with 3078 rows, 1482 columns and 10564 nonzeros
Presolve removed 798 rows and 0 columns
Presolve time: 0.06s
Presolved: 2280 rows, 1482 columns, 8816 nonzeros
Variable types: 0 continuous, 1482 integer (1482 binary)
Found heuristic solution: objective 22.0000000

Root relaxation: objective 3.000000e+00, 1757 iterations, 0.07 seconds

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

     0     0    3.00000    0   42   22.00000    3.00000  86.4%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0  136    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   67    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   70    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  109    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   42    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   67    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   70    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   70    4.00000    3.00000  25.0%     -    2s
     0     2    3.00000    0   70    4.00000    3.00000  25.0%     -    2s

Cutting planes:
  Gomory: 3
  Zero half: 4

Explored 8 nodes (51133 simplex iterations) in 4.77 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%