Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:26 2013

Optimize a model with 320 rows, 4140 columns and 8380 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 300 rows, 4120 columns, 8300 nonzeros
Variable types: 4100 continuous, 20 integer (20 binary)

Root relaxation: objective 3.600389e+04, 381 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    2          - 36003.8892     -      -    0s
H    0     0                    38544.555741 36003.8892  6.59%     -    0s
     0     0 36072.7607    0    2 38544.5557 36072.7607  6.41%     -    0s
     0     0 36110.8229    0    2 38544.5557 36110.8229  6.31%     -    0s
     0     0 36116.2759    0    2 38544.5557 36116.2759  6.30%     -    0s
     0     0 36123.0632    0    2 38544.5557 36123.0632  6.28%     -    0s
     0     0 36123.5462    0    2 38544.5557 36123.5462  6.28%     -    0s
     0     0 36124.0165    0    2 38544.5557 36124.0165  6.28%     -    0s
     0     0 36124.2681    0    2 38544.5557 36124.2681  6.28%     -    0s
     0     0 36128.9946    0    2 38544.5557 36128.9946  6.27%     -    0s
     0     0 36129.5465    0    2 38544.5557 36129.5465  6.27%     -    0s
     0     0 36129.5465    0    2 38544.5557 36129.5465  6.27%     -    0s
     0     0 36129.6441    0    2 38544.5557 36129.6441  6.27%     -    0s
     0     0 36129.6441    0    2 38544.5557 36129.6441  6.27%     -    0s
     0     2 36144.7984    0    2 38544.5557 36144.7984  6.23%     -    0s
*    1     1               1    36188.506204 36188.5062   0.0%  88.0    0s

Cutting planes:
  Flow cover: 13

Explored 2 nodes (721 simplex iterations) in 0.11 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%