Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:05:33 2012

Optimize a model with 13734 rows, 4032 columns and 44982 nonzeros
Presolve time: 0.11s
Presolved: 13734 rows, 4032 columns, 45261 nonzeros
Variable types: 0 continuous, 4032 integer (4032 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 2.000000e+00, 6049 iterations, 0.75 seconds

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

     0     0    2.00000    0  126   39.00000    2.00000  94.9%     -    2s
H    0     0                      14.0000000    2.00000  85.7%     -    2s
H    0     0                       5.0000000    2.00000  60.0%     -    2s
     0     0    2.00000    0  126    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  126    5.00000    2.00000  60.0%     -    8s
     0     0    2.00000    0  126    5.00000    2.00000  60.0%     -   14s
H    0     0                       4.0000000    2.00000  50.0%     -   14s
     0     0    2.00000    0  126    4.00000    2.00000  50.0%     -   20s
     0     0    2.00000    0  126    4.00000    2.00000  50.0%     -   26s
     0     0    2.00000    0  126    4.00000    2.00000  50.0%     -   31s
     0     2    2.00000    0  126    4.00000    2.00000  50.0%     -   44s
     1     3    3.00000    1  494    4.00000    2.00000  50.0% 41437   57s
     2     4    3.00000    1  444    4.00000    3.00000  25.0% 32006   66s
     7     5     cutoff    5         4.00000    3.00000  25.0% 10885   70s
    16     4     cutoff    4         4.00000    3.00000  25.0%  6034   75s
    25     1     cutoff    4         4.00000    3.00000  25.0%  4469   80s

Cutting planes:
  Clique: 114

Explored 32 nodes (195297 simplex iterations) in 81.50 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%