Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:14:25 2012

Optimize a model with 3135 rows, 2450 columns and 11611 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.09s
Presolved: 3182 rows, 2448 columns, 13884 nonzeros
Variable types: 0 continuous, 2448 integer (2448 binary)
Found heuristic solution: objective 49.0000000

Root relaxation: objective 2.000000e+00, 1738 iterations, 0.03 seconds

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

     0     0    2.00000    0   88   49.00000    2.00000  95.9%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    2.28571    0  168    4.00000    2.28571  42.9%     -    0s
     0     0    2.40000    0  574    4.00000    2.40000  40.0%     -    0s
     0     0    2.40000    0 1419    4.00000    2.40000  40.0%     -    0s
     0     0    2.40000    0   78    4.00000    2.40000  40.0%     -    1s
H    0     0                       3.0000000    2.40000  20.0%     -    1s

Cutting planes:
  Zero half: 5

Explored 0 nodes (16506 simplex iterations) in 1.51 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%