Gurobi 5.0.1 (linux64) logging started Fri Nov 16 14:46:19 2012

Optimize a model with 21279 rows, 5852 columns and 69310 nonzeros
Presolve removed 3 rows and 78 columns
Presolve time: 0.78s
Presolved: 21276 rows, 5774 columns, 68674 nonzeros
Variable types: 0 continuous, 5774 integer (5774 binary)
Found heuristic solution: objective 76.0000000

Root relaxation: objective 2.000000e+00, 4050 iterations, 0.19 seconds

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

     0     0    2.00000    0  150   76.00000    2.00000  97.4%     -    1s
H    0     0                      74.0000000    2.00000  97.3%     -    1s
H    0     0                       5.0000000    2.00000  60.0%     -    1s
     0     0    3.00000    0 3162    5.00000    3.00000  40.0%     -   17s
H    0     0                       4.0000000    3.00000  25.0%     -   21s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -   23s

Cutting planes:
  Clique: 190

Explored 0 nodes (46999 simplex iterations) in 23.19 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%