Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:02:44 2013

Optimize a model with 578 rows, 5247 columns and 221399 nonzeros
Presolve removed 41 rows and 130 columns
Presolve time: 2.16s
Presolved: 537 rows, 5117 columns, 215206 nonzeros
Variable types: 0 continuous, 5117 integer (5117 binary)
Found heuristic solution: objective 3138.0000000

Root relaxation: objective 2.040714e+03, 852 iterations, 0.09 seconds

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

     0     0 2040.71429    0   23 3138.00000 2040.71429  35.0%     -    2s
H    0     0                    2156.0000000 2040.71429  5.35%     -    2s
*    0     0               0    2042.0000000 2042.00000   0.0%     -    2s

Cutting planes:
  Gomory: 2
  Clique: 1
  Zero half: 9

Explored 0 nodes (1020 simplex iterations) in 2.57 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.042000000000e+03, best bound 2.042000000000e+03, gap 0.0%