Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:13:04 2013

Optimize a model with 885 rows, 12420 columns and 591909 nonzeros
Presolve removed 9 rows and 0 columns
Presolve time: 0.83s
Presolved: 876 rows, 12420 columns, 591819 nonzeros
Variable types: 0 continuous, 12420 integer (12420 binary)
Found heuristic solution: objective 6151.0000000

Root relaxation: objective 4.670300e+03, 3230 iterations, 0.89 seconds

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

     0     0 4670.30000    0   58 6151.00000 4670.30000  24.1%     -    2s
H    0     0                    5193.0000000 4670.30000  10.1%     -    4s
*    0     0               0    4703.0000000 4703.00000   0.0%     -    5s

Cutting planes:
  Clique: 4
  Zero half: 14

Explored 0 nodes (4159 simplex iterations) in 5.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.703000000000e+03, best bound 4.703000000000e+03, gap 0.0%