Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:52:34 2013

Optimize a model with 12383 rows, 1764 columns and 37926 nonzeros
Presolve removed 1231 rows and 887 columns
Presolve time: 0.08s
Presolved: 11152 rows, 877 columns, 34430 nonzeros
Variable types: 25 continuous, 852 integer (852 binary)
Found heuristic solution: objective 35625.000000
Found heuristic solution: objective 33396.000000

Root relaxation: objective 2.388586e+04, 5436 iterations, 0.21 seconds

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

     0     0 23885.8636    0   12 33396.0000 23885.8636  28.5%     -    0s
H    0     0                    23906.000000 23885.8636  0.08%     -    0s
H    0     0                    23901.000000 23885.8636  0.06%     -    0s
H    0     0                    23895.000000 23885.8636  0.04%     -    0s
     0     0 23885.8636    0   20 23895.0000 23885.8636  0.04%     -    0s
     0     0 23885.8636    0    7 23895.0000 23885.8636  0.04%     -    0s
H    0     0                    23893.000000 23885.8636  0.03%     -    0s
     0     0 23885.8636    0   26 23893.0000 23885.8636  0.03%     -    0s
     0     2 23886.0155    0   26 23893.0000 23886.0155  0.03%     -    0s
*  327   162              43    23892.000000 23887.0727  0.02%   7.1    0s
H  415   104                    23890.000000 23887.0727  0.01%   6.6    0s

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

Explored 1718 nodes (17555 simplex iterations) in 1.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.389000000000e+04, best bound 2.388800000000e+04, gap 0.0084%