Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:34:26 2013

Optimize a model with 6579 rows, 1156 columns and 20230 nonzeros
Presolve removed 1099 rows and 595 columns
Presolve time: 0.05s
Presolved: 5480 rows, 561 columns, 16966 nonzeros
Variable types: 17 continuous, 544 integer (544 binary)
Found heuristic solution: objective 28027.000000
Found heuristic solution: objective 23987.000000

Root relaxation: objective 1.929508e+04, 2464 iterations, 0.08 seconds

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

     0     0 19295.0758    0    7 23987.0000 19295.0758  19.6%     -    0s
H    0     0                    19318.000000 19295.0758  0.12%     -    0s
H    0     0                    19301.000000 19295.0758  0.03%     -    0s
     0     0 19297.5356    0   21 19301.0000 19297.5356  0.02%     -    0s
     0     0 19297.5356    0    7 19301.0000 19297.5356  0.02%     -    0s
     0     0 19297.5369    0   19 19301.0000 19297.5369  0.02%     -    0s
H    0     0                    19300.000000 19297.5369  0.01%     -    0s
     0     1 19297.7227    0   19 19300.0000 19297.7227  0.01%     -    0s
*    3     2              11    19299.000000 19299.0000   0.0%   0.0    0s

Explored 3 nodes (2599 simplex iterations) in 0.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.929900000000e+04, best bound 1.929900000000e+04, gap 0.0%