Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:09:17 2012

Optimize a model with 1870 rows, 1190 columns and 6664 nonzeros
Presolve removed 308 rows and 68 columns
Presolve time: 0.03s
Presolved: 1562 rows, 1122 columns, 5882 nonzeros
Variable types: 0 continuous, 1122 integer (1122 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 3.000000e+00, 1369 iterations, 0.04 seconds

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

     0     0    3.00000    0   22   21.00000    3.00000  85.7%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   26    4.00000    3.00000  25.0%     -    0s
H    0     0                       3.0000000    3.00000   0.0%     -    0s

Cutting planes:
  Zero half: 2

Explored 0 nodes (3900 simplex iterations) in 0.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%