Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:17:14 2012

Optimize a model with 4292 rows, 3422 columns and 16066 nonzeros
Presolve removed 5 rows and 290 columns
Presolve time: 0.10s
Presolved: 4287 rows, 3132 columns, 15776 nonzeros
Variable types: 0 continuous, 3132 integer (3132 binary)
Found heuristic solution: objective 31.0000000

Root relaxation: objective 2.000000e+00, 2886 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  100   31.00000    2.00000  93.5%     -    0s
H    0     0                       7.0000000    2.00000  71.4%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    2.00000    0  100    4.00000    2.00000  50.0%     -    0s
     0     0    2.00000    0  154    4.00000    2.00000  50.0%     -    1s
     0     0    2.00000    0  159    4.00000    2.00000  50.0%     -    3s
H    0     0                       3.0000000    2.00000  33.3%     -    3s
     0     0    2.00000    0  159    3.00000    2.00000  33.3%     -    3s
     0     0    2.00000    0  100    3.00000    2.00000  33.3%     -    4s
     0     0    2.00000    0  156    3.00000    2.00000  33.3%     -    6s
     0     0    2.00000    0  156    3.00000    2.00000  33.3%     -    8s
     0     2    2.00000    0  156    3.00000    2.00000  33.3%     -   10s
     7     6    2.00000    1  100    3.00000    2.00000  33.3%   785   15s
     9     8    2.00000    1  106    3.00000    2.00000  33.3%   611   20s

Cutting planes:
  Gomory: 7
  Zero half: 2

Explored 13 nodes (113873 simplex iterations) in 23.52 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%