Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:43:11 2013

Optimize a model with 9919 rows, 1521 columns and 30420 nonzeros
Presolve removed 869 rows and 762 columns
Presolve time: 0.05s
Presolved: 9050 rows, 759 columns, 27906 nonzeros
Variable types: 21 continuous, 738 integer (738 binary)
Found heuristic solution: objective 30278.000000

Root relaxation: objective 2.099020e+04, 4798 iterations, 0.16 seconds

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

     0     0 20990.2000    0   10 30278.0000 20990.2000  30.7%     -    0s
H    0     0                    21002.000000 20990.2000  0.06%     -    0s
H    0     0                    20999.000000 20990.2000  0.04%     -    0s
     0     0 20991.0000    0   16 20999.0000 20991.0000  0.04%     -    0s
     0     0 20991.0000    0   13 20999.0000 20991.0000  0.04%     -    0s
     0     0 20991.4219    0   23 20999.0000 20991.4219  0.04%     -    0s
     0     2 20991.6213    0   23 20999.0000 20991.6213  0.04%     -    0s
H    3     4                    20998.000000 20991.6213  0.03%   3.0    0s
*  175    59              30    20997.000000 20993.4132  0.02%   9.1    0s

Cutting planes:
  Gomory: 5
  Cover: 18
  Implied bound: 3
  MIR: 22
  Zero half: 9

Explored 374 nodes (8408 simplex iterations) in 0.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.099700000000e+04, best bound 2.099600000000e+04, gap 0.0048%