Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:17:46 2013

Optimize a model with 800 rows, 25350 columns and 50950 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.19s
Presolved: 750 rows, 25300 columns, 50750 nonzeros
Variable types: 25250 continuous, 50 integer (50 binary)

Root relaxation: objective 1.626233e+05, 1593 iterations, 0.12 seconds

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

     0     0 162623.326    0    5          - 162623.326     -      -    0s
H    0     0                    173948.67734 162623.326  6.51%     -    0s
     0     0 162694.019    0    5 173948.677 162694.019  6.47%     -    0s
     0     0 162717.468    0    4 173948.677 162717.468  6.46%     -    0s
     0     0 162727.713    0    4 173948.677 162727.713  6.45%     -    0s
     0     0 162734.065    0    4 173948.677 162734.065  6.45%     -    0s
     0     0 162734.961    0    4 173948.677 162734.961  6.45%     -    0s
     0     0 162735.419    0    4 173948.677 162735.419  6.45%     -    0s
     0     0 162735.419    0    4 173948.677 162735.419  6.45%     -    1s
     0     0 162735.419    0    4 173948.677 162735.419  6.45%     -    1s
     0     2 162737.041    0    4 173948.677 162737.041  6.45%     -    1s
*   15     7              14    162910.04610 162812.427  0.06%  28.7    1s
*   22     0              10    162887.15892 162887.159   0.0%  22.8    1s

Cutting planes:
  Flow cover: 19

Explored 23 nodes (2520 simplex iterations) in 1.74 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.628871589165e+05, best bound 1.628871589165e+05, gap 0.0%