Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:11:55 2012

Optimize a model with 3674 rows, 650 columns and 11548 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 3672 rows, 648 columns, 18216 nonzeros
Variable types: 0 continuous, 648 integer (648 binary)

Root relaxation: objective 4.787879e+00, 3115 iterations, 0.20 seconds

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

     0     0    4.78788    0  231          -    4.78788     -      -    0s
H    0     0                      25.0000000    4.78788  80.8%     -    0s
*    0     0               0       6.0000000    6.00000   0.0%     -    1s

Cutting planes:
  Gomory: 4
  Clique: 173
  Zero half: 8

Explored 0 nodes (7970 simplex iterations) in 1.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%