Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:24:08 2013

Optimize a model with 6017 rows, 1089 columns and 18513 nonzeros
Presolve removed 814 rows and 552 columns
Presolve time: 0.04s
Presolved: 5203 rows, 537 columns, 16149 nonzeros
Variable types: 18 continuous, 519 integer (519 binary)
Found heuristic solution: objective 25908.000000

Root relaxation: objective 1.934588e+04, 2731 iterations, 0.08 seconds

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

     0     0 19345.8846    0   11 25908.0000 19345.8846  25.3%     -    0s
H    0     0                    19392.000000 19345.8846  0.24%     -    0s
H    0     0                    19370.000000 19345.8846  0.12%     -    0s
H    0     0                    19366.000000 19345.8846  0.10%     -    0s
     0     0 19346.0000    0   14 19366.0000 19346.0000  0.10%     -    0s
     0     0 19346.0000    0   10 19366.0000 19346.0000  0.10%     -    0s
H    0     0                    19360.000000 19346.0000  0.07%     -    0s
H    0     0                    19356.000000 19346.0000  0.05%     -    0s
     0     0 19346.0000    0   11 19356.0000 19346.0000  0.05%     -    0s
     0     1 19346.0000    0   11 19356.0000 19346.0000  0.05%     -    0s
H    1     1                    19353.000000 19346.0000  0.04%  38.0    0s
*   40     3              17    19352.000000 19349.5354  0.01%  12.2    0s

Cutting planes:
  Gomory: 12
  Cover: 2
  Implied bound: 1
  MIR: 14
  Zero half: 14

Explored 46 nodes (4261 simplex iterations) in 0.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.935200000000e+04, best bound 1.935100000000e+04, gap 0.0052%