Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:34 2013

Optimize a model with 280 rows, 4100 columns and 8200 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.00s
Presolved: 320 rows, 4120 columns, 8260 nonzeros
Variable types: 4080 continuous, 40 integer (40 binary)

Root relaxation: objective 3.600389e+04, 425 iterations, 0.00 seconds

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

     0     0 36003.8892    0    4          - 36003.8892     -      -    0s
H    0     0                    36815.008296 36003.8892  2.20%     -    0s
     0     0 36070.7952    0    4 36815.0083 36070.7952  2.02%     -    0s
     0     0 36112.8229    0    4 36815.0083 36112.8229  1.91%     -    0s
     0     0 36119.5845    0    4 36815.0083 36119.5845  1.89%     -    0s
     0     0 36125.0766    0    4 36815.0083 36125.0766  1.87%     -    0s
     0     0 36125.0766    0    4 36815.0083 36125.0766  1.87%     -    0s
     0     0 36125.0766    0    4 36815.0083 36125.0766  1.87%     -    0s
     0     2 36143.3306    0    4 36815.0083 36143.3306  1.82%     -    0s
*    1     1               1    36188.506204 36188.5062   0.0%  69.0    0s

Cutting planes:
  Flow cover: 9

Explored 2 nodes (675 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.618850620407e+04, best bound 3.618850620407e+04, gap 0.0%