Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:04:52 2012

Optimize a model with 12869 rows, 4290 columns and 42573 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.38s
Presolved: 12867 rows, 4288 columns, 42177 nonzeros
Variable types: 0 continuous, 4288 integer (4288 binary)
Found heuristic solution: objective 65.0000000

Root relaxation: objective 2.000000e+00, 3147 iterations, 0.11 seconds

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

     0     0    2.00000    0  130   65.00000    2.00000  96.9%     -    0s
H    0     0                      60.0000000    2.00000  96.7%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0 2743    5.00000    2.66667  46.7%     -    2s
     0     0    2.66667    0  172    5.00000    2.66667  46.7%     -    6s
     0     2    2.66667    0  169    5.00000    2.66667  46.7%     -   10s
*   12     5               8       4.0000000    2.66667  33.3%  1614   13s

Cutting planes:
  Clique: 63

Explored 18 nodes (50239 simplex iterations) in 14.84 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%