Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:45:46 2012

Optimize a model with 4410 rows, 9702 columns and 22540 nonzeros
Presolve removed 38 rows and 3724 columns
Presolve time: 0.12s
Presolved: 4372 rows, 5978 columns, 18816 nonzeros
Variable types: 0 continuous, 5978 integer (5978 binary)
Found heuristic solution: objective 22.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: objective 2.000000e+00, 4260 iterations, 0.08 seconds

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

     0     0    2.00000    0   26    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0  106    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0  137    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0   85    3.00000    2.00000  33.3%     -    1s
     0     0    2.00000    0   91    3.00000    2.00000  33.3%     -    2s
     0     0    2.00000    0   85    3.00000    2.00000  33.3%     -    4s
     0     0    2.00000    0  136    3.00000    2.00000  33.3%     -    5s
     0     0    2.00000    0   26    3.00000    2.00000  33.3%     -    5s
     0     0    2.00000    0   85    3.00000    2.00000  33.3%     -    6s
     0     0    2.00000    0   85    3.00000    2.00000  33.3%     -    6s
     0     2    2.00000    0   85    3.00000    2.00000  33.3%     -    7s
     6     6    2.00000    1  136    3.00000    2.00000  33.3%   829   10s
     8     7    2.00000    1   93    3.00000    2.00000  33.3%   622   15s
    10     8    2.00000    1   26    3.00000    2.00000  33.3%   498   23s

Cutting planes:
  Gomory: 3
  Zero half: 5

Explored 15 nodes (216545 simplex iterations) in 24.55 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%