Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:48:33 2012

Optimize a model with 14472 rows, 4556 columns and 47704 nonzeros
Presolve time: 0.11s
Presolved: 14472 rows, 4556 columns, 47890 nonzeros
Variable types: 0 continuous, 4556 integer (4556 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 2.000000e+00, 5322 iterations, 0.40 seconds

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

     0     0    2.00000    0  134   39.00000    2.00000  94.9%     -    2s
H    0     0                      11.0000000    2.00000  81.8%     -    2s
H    0     0                       5.0000000    2.00000  60.0%     -    3s
     0     0    2.00000    0  134    5.00000    2.00000  60.0%     -    4s
     0     0    2.00000    0  134    5.00000    2.00000  60.0%     -   10s
     0     0    2.00000    0  134    5.00000    2.00000  60.0%     -   17s
     0     0    2.00000    0  134    5.00000    2.00000  60.0%     -   25s
     0     0    2.00000    0  134    5.00000    2.00000  60.0%     -   32s
     0     0    2.00000    0  134    5.00000    2.00000  60.0%     -   38s
     0     2    2.00000    0  134    5.00000    2.00000  60.0%     -   56s
     1     3    3.00000    1  831    5.00000    2.00000  60.0% 42081   71s
     2     4    3.00000    1  580    5.00000    3.00000  40.0% 32817   81s
*   19     6              14       4.0000000    3.00000  25.0%  4012   83s
    26     3    3.00000    2  380    4.00000    3.00000  25.0%  3070   85s

Cutting planes:
  Clique: 113

Explored 30 nodes (170177 simplex iterations) in 87.34 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%