Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:50 2013

Optimize a model with 220 rows, 4020 columns and 8020 nonzeros
Presolve time: 0.00s
Presolved: 220 rows, 4020 columns, 8020 nonzeros
Variable types: 4000 continuous, 20 integer (20 binary)

Root relaxation: objective 1.826413e+04, 180 iterations, 0.00 seconds

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

     0     0 18264.1306    0    3          - 18264.1306     -      -    0s
H    0     0                    18390.000000 18264.1306  0.68%     -    0s
     0     0 18377.1179    0    2 18390.0000 18377.1179  0.07%     -    0s
H    0     0                    18389.000000 18377.1179  0.06%     -    0s
     0     0 18386.3808    0    2 18389.0000 18386.3808  0.01%     -    0s
     0     0     cutoff    0      18389.0000 18389.0000   0.0%     -    0s

Cutting planes:
  Implied bound: 29
  Flow cover: 9

Explored 0 nodes (235 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.838900000000e+04, best bound 1.838900000000e+04, gap 0.0%