Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:10:40 2012

Optimize a model with 2771 rows, 1332 columns and 9466 nonzeros
Presolve removed 759 rows and 38 columns
Presolve time: 0.11s
Presolved: 2012 rows, 1294 columns, 7518 nonzeros
Variable types: 0 continuous, 1294 integer (1294 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 3.000000e+00, 2050 iterations, 0.13 seconds

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

     0     0    3.00000    0   68   36.00000    3.00000  91.7%     -    0s
H    0     0                      12.0000000    3.00000  75.0%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   74    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   76    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   56    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   62    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  108    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0  108    4.00000    3.00000  25.0%     -    2s
     0     2    3.00000    0   65    4.00000    3.00000  25.0%     -    2s
     6     6    3.00000    1   32    4.00000    3.00000  25.0%   262    5s
    11    11    3.00000   13  725    4.00000    3.00000  25.0%  2887   12s

Cutting planes:
  Gomory: 10
  Clique: 1
  Zero half: 9

Explored 19 nodes (58307 simplex iterations) in 12.60 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%