Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:10:37 2013

Optimize a model with 604 rows, 6679 columns and 259327 nonzeros
Presolve removed 27 rows and 0 columns
Presolve time: 0.33s
Presolved: 577 rows, 6679 columns, 258269 nonzeros
Variable types: 0 continuous, 6679 integer (6679 binary)
Found heuristic solution: objective 3764.0000000

Root relaxation: objective 2.496500e+03, 980 iterations, 0.11 seconds

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

     0     0 2496.50000    0   24 3764.00000 2496.50000  33.7%     -    0s
H    0     0                    2746.0000000 2496.50000  9.09%     -    0s
*    0     0               0    2497.0000000 2497.00000   0.0%     -    0s

Cutting planes:
  Clique: 3
  Zero half: 2

Explored 0 nodes (1081 simplex iterations) in 0.74 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.497000000000e+03, best bound 2.497000000000e+03, gap 0.0%