Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:58:36 2012

Optimize a model with 5664 rows, 2352 columns and 19152 nonzeros
Presolve removed 1344 rows and 0 columns
Presolve time: 0.14s
Presolved: 4320 rows, 2352 columns, 15984 nonzeros
Variable types: 0 continuous, 2352 integer (2352 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 3.000000e+00, 4494 iterations, 0.47 seconds

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

     0     0    3.00000    0   90   25.00000    3.00000  88.0%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
     0     0    3.00000    0  204    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0  113    4.00000    3.00000  25.0%     -    3s
     0     0    3.00000    0   68    4.00000    3.00000  25.0%     -    5s
     0     0    3.00000    0   91    4.00000    3.00000  25.0%     -    7s
     0     0    3.00000    0   97    4.00000    3.00000  25.0%     -    9s
     0     0    3.00000    0  105    4.00000    3.00000  25.0%     -   10s
     0     0    3.00000    0  116    4.00000    3.00000  25.0%     -   12s
     0     0    3.00000    0  116    4.00000    3.00000  25.0%     -   12s
     0     2    3.00000    0  116    4.00000    3.00000  25.0%     -   13s
     4     4    3.00000    1   64    4.00000    3.00000  25.0%   609   15s
     7     6    3.00000    1   86    4.00000    3.00000  25.0%   348   21s
     8     7    3.00000    1  119    4.00000    3.00000  25.0%   305   25s
    13    10    3.00000   16  118    4.00000    3.00000  25.0%  5281   31s

Cutting planes:
  Gomory: 2
  Clique: 2
  Zero half: 2

Explored 17 nodes (151923 simplex iterations) in 31.78 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%