Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:41:38 2012

Optimize a model with 4680 rows, 8190 columns and 21870 nonzeros
Presolve removed 30 rows and 2700 columns
Presolve time: 0.12s
Presolved: 4650 rows, 5490 columns, 19170 nonzeros
Variable types: 0 continuous, 5490 integer (5490 binary)
Found heuristic solution: objective 27.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: objective 2.000000e+00, 5089 iterations, 0.20 seconds

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

     0     0    2.00000    0   58    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0  137    3.00000    2.00000  33.3%     -    1s
     0     0    2.00000    0  119    3.00000    2.00000  33.3%     -    2s
     0     0    2.00000    0  121    3.00000    2.00000  33.3%     -    3s
     0     0    2.00000    0  119    3.00000    2.00000  33.3%     -    4s
     0     0    2.00000    0  121    3.00000    2.00000  33.3%     -    6s
     0     0    2.00000    0  119    3.00000    2.00000  33.3%     -    7s
     0     0    2.00000    0  121    3.00000    2.00000  33.3%     -    8s
     0     0    2.00000    0  152    3.00000    2.00000  33.3%     -    9s
     0     0    2.00000    0  152    3.00000    2.00000  33.3%     -    9s
     0     2    2.00000    0  152    3.00000    2.00000  33.3%     -   11s
     6     6    2.00000    1   58    3.00000    2.00000  33.3%  1472   16s
     8     7    2.00000    1  124    3.00000    2.00000  33.3%  1104   21s

Cutting planes:
  Zero half: 6

Explored 8 nodes (187260 simplex iterations) in 22.00 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%