Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:47:32 2013

Optimize a model with 680 rows, 24260 columns and 248680 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.56s
Presolved: 660 rows, 24240 columns, 228660 nonzeros
Variable types: 24040 continuous, 200 integer (200 binary)

Root relaxation: objective 3.600389e+04, 427 iterations, 0.05 seconds

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

     0     0 36003.8892    0    6          - 36003.8892     -      -    0s
     0     0 36004.3106    0    6          - 36004.3106     -      -    1s
     0     0 36004.4203    0    7          - 36004.4203     -      -    1s
     0     0 36004.4304    0    7          - 36004.4304     -      -    1s
     0     0 36004.4304    0    7          - 36004.4304     -      -    1s
     0     2 36004.7904    0    7          - 36004.7904     -      -    4s
*   13     7              13    36202.402686 36050.9586  0.42%  12.2    4s

Cutting planes:
  Flow cover: 6

Explored 32 nodes (837 simplex iterations) in 4.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.620240268604e+04, best bound 3.620238047165e+04, gap 0.0001%