Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:57:56 2013

Optimize a model with 34279 rows, 3481 columns and 104430 nonzeros
Presolve removed 2909 rows and 1764 columns
Presolve time: 0.22s
Presolved: 31370 rows, 1717 columns, 95621 nonzeros
Variable types: 27 continuous, 1690 integer (1690 binary)
Found heuristic solution: objective 80390.000000

Root relaxation: objective 6.164790e+04, 6696 iterations, 0.47 seconds

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

     0     0 61647.9000    0   13 80390.0000 61647.9000  23.3%     -    0s
H    0     0                    61663.000000 61647.9000  0.02%     -    0s
H    0     0                    61655.000000 61647.9000  0.01%     -    0s
     0     0 61649.0769    0   25 61655.0000 61649.0769  0.01%     -    0s

Cutting planes:
  Gomory: 5
  Implied bound: 2
  MIR: 8

Explored 0 nodes (6929 simplex iterations) in 0.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.165500000000e+04, best bound 6.165000000000e+04, gap 0.0081%