Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:46 2013

Optimize a model with 260 rows, 1230 columns and 2750 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 240 rows, 1210 columns, 2680 nonzeros
Variable types: 1120 continuous, 90 integer (90 binary)

Root relaxation: objective 1.791602e+04, 113 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 17923.4907    0    2          - 17923.4907     -      -    0s
     0     0 17923.4907    0    2          - 17923.4907     -      -    0s
H    0     0                    17999.520498 17923.4907  0.42%     -    0s
     0     2 17936.7697    0    2 17999.5205 17936.7697  0.35%     -    0s
*    6     5               4    17984.059480 17965.5516  0.10%   6.8    0s
*   10     2               4    17983.774558 17971.1946  0.07%   5.7    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 16 nodes (235 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798377455783e+04, best bound 1.798377455783e+04, gap 0.0%