Gurobi 5.0.1 (linux64) logging started Mon Dec 10 23:29:51 2012

Optimize a model with 2190 rows, 2160 columns and 7159 nonzeros
Presolve removed 96 rows and 61 columns
Presolve time: 0.02s
Presolved: 2094 rows, 2099 columns, 6928 nonzeros
Variable types: 1401 continuous, 698 integer (698 binary)

Root relaxation: objective 1.945762e+05, 1048 iterations, 0.01 seconds

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

     0     0 194576.241    0  348          - 194576.241     -      -    0s
H    0     0                    325692.00000 194576.241  40.3%     -    0s
H    0     0                    325332.00000 194576.241  40.2%     -    0s
     0     0 241351.150    0   56 325332.000 241351.150  25.8%     -    0s
     0     0 242870.313    0   26 325332.000 242870.313  25.3%     -    0s
     0     0 243095.222    0    7 325332.000 243095.222  25.3%     -    0s
     0     0 243102.655    0    8 325332.000 243102.655  25.3%     -    0s
H    0     0                    243234.00000 243102.655  0.05%     -    0s
     0     2 243103.429    0    8 243234.000 243103.429  0.05%     -    0s
*   16    14              14    243215.00000 243103.429  0.05%   2.6    2s
*   24    13              20    243207.00000 243103.429  0.04%   2.5    2s
H   30     7                    243205.00000 243113.983  0.04%   2.7    3s
*   35     4               9    243132.00000 243113.983  0.01%   2.7    3s

Cutting planes:
  Gomory: 21
  Cover: 2
  Implied bound: 1
  Flow cover: 224
  Flow path: 165

Explored 36 nodes (1599 simplex iterations) in 3.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.431320000000e+05, best bound 2.431139825131e+05, gap 0.0074%