Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:18:41 2013

Optimize a model with 1700 rows, 75650 columns and 651700 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 1.15s
Presolved: 1650 rows, 75600 columns, 601650 nonzeros
Variable types: 75100 continuous, 500 integer (500 binary)

Root relaxation: objective 2.198499e+05, 3411 iterations, 0.29 seconds

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

     0     0 219849.939    0    6          - 219849.939     -      -    1s
     0     0 219850.767    0    6          - 219850.767     -      -    2s
     0     0 219850.899    0    7          - 219850.899     -      -    2s
     0     0 219850.899    0    7          - 219850.899     -      -    3s
     0     0 219850.899    0    7          - 219850.899     -      -    3s
     0     2 219851.699    0    7          - 219851.699     -      -   11s
    32    34 222417.199   32    1          - 220306.336     -   39.0   15s
*   38    18              38    222622.35999 220306.336  1.04%  33.9   15s
   133    61 222089.816    3    3 222622.360 220952.973  0.75%  42.6   20s
H  206    39                    222289.67821 221890.975  0.18%  44.4   23s
*  233    48              50    222288.46955 221890.975  0.18%  39.7   24s
*  264    17              37    222036.09296 221911.055  0.06%  36.4   24s
   270    15 221931.356   14    1 222036.093 221911.603  0.06%  36.1   25s
*  293    18              37    222011.62735 221911.603  0.05%  33.6   25s
*  308     9              16    221990.70522 221947.268  0.02%  33.1   25s
*  312    10              19    221990.67135 221947.268  0.02%  32.7   25s

Cutting planes:
  Flow cover: 3

Explored 320 nodes (14012 simplex iterations) in 25.89 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.219906713538e+05, best bound 2.219756692350e+05, gap 0.0068%