Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:42:35 2012

Optimize a model with 14015 rows, 4160 columns and 45886 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.41s
Presolved: 14077 rows, 4158 columns, 49544 nonzeros
Variable types: 0 continuous, 4158 integer (4158 binary)
Found heuristic solution: objective 64.0000000

Root relaxation: objective 2.000000e+00, 2632 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  128   64.00000    2.00000  96.9%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0 3721    5.00000    2.66667  46.7%     -    2s
     0     0    2.66667    0  230    5.00000    2.66667  46.7%     -   18s
H    0     0                       4.0000000    2.66667  33.3%     -   22s
     0     2    2.66667    0  166    4.00000    2.66667  33.3%     -   30s

Cutting planes:
  Clique: 52

Explored 21 nodes (76208 simplex iterations) in 34.03 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%