Gurobi 5.0.1 (linux64) logging started Wed Nov 28 10:22:46 2012

Optimize a model with 104013 rows, 103917 columns and 411156 nonzeros
Presolve removed 2210 rows and 2210 columns
Presolve time: 0.76s
Presolved: 101803 rows, 101707 columns, 406736 nonzeros
Variable types: 99451 continuous, 2256 integer (2256 binary)
Found heuristic solution: objective 9165.0000000
Found heuristic solution: objective 4402.0000000
Found heuristic solution: objective 4253.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29874    1.7456668e+03   2.929167e+02   0.000000e+00      5s
   43952    1.7470003e+03   1.390000e+02   0.000000e+00     11s
   54861    1.7470004e+03   1.280000e+02   0.000000e+00     15s
   64279    1.7486114e+03   9.116667e+01   0.000000e+00     20s
   72385    1.7486115e+03   5.494444e+01   0.000000e+00     25s
   79112    1.7486115e+03   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 1.748611e+03, 79112 iterations, 30.22 seconds
Total elapsed time = 35.32s

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

     0     0 1748.61111    0   71 4253.00000 1748.61111  58.9%     -   35s
H    0     0                    1957.0000000 1748.61111  10.6%     -   36s
     0     0 1750.35714    0   74 1957.00000 1750.35714  10.6%     -   45s
     0     0 1750.35714    0   76 1957.00000 1750.35714  10.6%     -   46s
     0     0 1753.41176    0   70 1957.00000 1753.41176  10.4%     -   62s
H    0     0                    1901.0000000 1753.41176  7.76%     -   62s
H    0     0                    1796.0000000 1753.41176  2.37%     -   62s
H    0     0                    1789.0000000 1753.41176  1.99%     -   62s
     0     0 1753.41176    0   70 1789.00000 1753.41176  1.99%     -   63s
H    0     0                    1776.0000000 1753.41176  1.27%     -   65s
     0     0 1753.41176    0   58 1776.00000 1753.41176  1.27%     -   68s
     0     0 1755.80000    0   52 1776.00000 1755.80000  1.14%     -   68s
     0     0 1757.40000    0   84 1776.00000 1757.40000  1.05%     -   68s
     0     0 1757.72222    0   80 1776.00000 1757.72222  1.03%     -   68s
     0     0 1757.72222    0   80 1776.00000 1757.72222  1.03%     -   68s
     0     0 1757.72222    0   64 1776.00000 1757.72222  1.03%     -   69s
     0     2 1758.00000    0   64 1776.00000 1758.00000  1.01%     -   69s
     6     8 1773.75000    6   49 1776.00000 1758.16667  1.00%   694   70s

Cutting planes:
  Implied bound: 18
  Flow path: 2
  Zero half: 16

Explored 81 nodes (209826 simplex iterations) in 72.85 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.776000000000e+03, best bound 1.776000000000e+03, gap 0.0%