Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:05:14 2013

Optimize a model with 62268 rows, 5184 columns and 189216 nonzeros
Presolve removed 5563 rows and 2647 columns
Presolve time: 0.47s
Presolved: 56705 rows, 2537 columns, 171771 nonzeros
Variable types: 24 continuous, 2513 integer (2513 binary)
Found heuristic solution: objective 115101.00000

Root relaxation: objective 8.954416e+04, 9841 iterations, 0.88 seconds

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

     0     0 89544.1571    0   12 115101.000 89544.1571  22.2%     -    1s
H    0     0                    89554.000000 89544.1571  0.01%     -    1s
     0     0 89545.2488    0   38 89554.0000 89545.2488  0.01%     -    1s

Cutting planes:
  Gomory: 8
  Implied bound: 1
  MIR: 8
  Mod-K: 2

Explored 0 nodes (10065 simplex iterations) in 1.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.955400000000e+04, best bound 8.954600000000e+04, gap 0.0089%