Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:41 2013

Optimize a model with 15225 rows, 2025 columns and 46575 nonzeros
Presolve removed 2146 rows and 1041 columns
Presolve time: 0.10s
Presolved: 13079 rows, 984 columns, 40161 nonzeros
Variable types: 22 continuous, 962 integer (962 binary)
Found heuristic solution: objective 35486.000000

Root relaxation: objective 2.471273e+04, 8648 iterations, 0.44 seconds

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

     0     0 24712.7333    0   13 35486.0000 24712.7333  30.4%     -    0s
H    0     0                    24739.000000 24712.7333  0.11%     -    0s
H    0     0                    24725.000000 24712.7333  0.05%     -    0s
     0     0 24713.7619    0   21 24725.0000 24713.7619  0.05%     -    0s
     0     0 24713.7619    0   14 24725.0000 24713.7619  0.05%     -    0s
     0     0 24713.7619    0   19 24725.0000 24713.7619  0.05%     -    0s
H    0     0                    24723.000000 24713.7619  0.04%     -    0s
     0     2 24714.0000    0   18 24723.0000 24714.0000  0.04%     -    0s
H    1     2                    24721.000000 24714.0000  0.03%  22.0    0s
H   10     7                    24720.000000 24714.0000  0.02%   2.2    0s
*   85    41              49    24719.000000 24714.0000  0.02%  28.5    1s
H 1646   397                    24717.000000 24714.4832  0.01%  13.2    1s

Cutting planes:
  Gomory: 1
  MIR: 6
  Zero half: 1

Explored 2118 nodes (40015 simplex iterations) in 2.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.471700000000e+04, best bound 2.471500000000e+04, gap 0.0081%