Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:19 2013

Optimize a model with 340 rows, 1620 columns and 3610 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.01s
Presolved: 320 rows, 1590 columns, 3180 nonzeros
Variable types: 1400 continuous, 190 integer (190 binary)

Root relaxation: objective 1.791602e+04, 110 iterations, 0.00 seconds

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

     0     0 17916.0191    0    3          - 17916.0191     -      -    0s
     0     0 17923.8986    0    4          - 17923.8986     -      -    0s
     0     0 17924.4183    0    4          - 17924.4183     -      -    0s
H    0     0                    18012.413083 17924.4183  0.49%     -    0s
     0     2 17931.4785    0    4 18012.4131 17931.4785  0.45%     -    0s
*   13     9              10    18008.588030 17971.2379  0.21%   3.3    0s
*   14     8              10    18008.334702 17971.2379  0.21%   3.1    0s
*   20     7               6    17991.821118 17971.8978  0.11%   3.0    0s
*   31     1               4    17985.380453 17983.7853  0.01%   3.3    0s

Cutting planes:
  Gomory: 2
  Flow cover: 5

Explored 32 nodes (297 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798538045271e+04, best bound 1.798378529655e+04, gap 0.0089%