Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:04:25 2013

Optimize a model with 5400 rows, 104200 columns and 216100 nonzeros
Presolve removed 300 rows and 200 columns
Presolve time: 0.49s
Presolved: 5100 rows, 104000 columns, 211800 nonzeros
Variable types: 102100 continuous, 1900 integer (1900 binary)

Root relaxation: objective 7.543716e+05, 9651 iterations, 0.95 seconds

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

     0     0 754371.571    0    4          - 754371.571     -      -    1s
H    0     0                    982042.73564 754371.571  23.2%     -    1s
     0     0 754452.741    0    4 982042.736 754452.741  23.2%     -    2s
     0     0 754484.698    0    3 982042.736 754484.698  23.2%     -    2s
H    0     0                    757433.81826 754484.698  0.39%     -    3s
     0     0 754508.435    0    5 757433.818 754508.435  0.39%     -    3s
     0     0 754520.237    0    4 757433.818 754520.237  0.38%     -    3s
     0     0 754520.379    0    4 757433.818 754520.379  0.38%     -    3s
     0     0 754521.170    0    4 757433.818 754521.170  0.38%     -    4s
     0     0 754521.698    0    4 757433.818 754521.698  0.38%     -    4s
     0     2 754529.970    0    4 757433.818 754529.970  0.38%     -    5s
    32    25 755270.522   31    1 757433.818 754758.188  0.35%  50.6   10s
H   38    14                    755679.58081 754758.188  0.12%  45.7   10s
   110    14 755598.968    4    1 755679.581 755183.359  0.07%  59.3   15s

Cutting planes:
  Flow cover: 34

Explored 139 nodes (17854 simplex iterations) in 16.27 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.556795808113e+05, best bound 7.556338102585e+05, gap 0.0061%