Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:35:38 2013

Optimize a model with 682800 rows, 25600 columns and 2060800 nonzeros
Presolve removed 22685 rows and 12882 columns (presolve time = 5s) ...
Presolve removed 27767 rows and 12916 columns
Presolve time: 9.91s
Presolved: 655033 rows, 12684 columns, 1974512 nonzeros
Variable types: 60 continuous, 12624 integer (12624 binary)
Found heuristic solution: objective 563604.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8449    3.8180744e+05   0.000000e+00   1.051851e+09      5s
   21726    3.9121849e+05   0.000000e+00   1.021155e+08     10s
   37418    4.0040795e+05   0.000000e+00   7.318384e+07     15s
   57937    4.1632621e+05   0.000000e+00   2.507024e+07     20s
   76042    4.2971551e+05   0.000000e+00   6.348696e+06     25s
   84491    4.3633522e+05   0.000000e+00   3.751745e+05     30s
   85657    4.3651073e+05   0.000000e+00   0.000000e+00     32s
   85657    4.3651073e+05   0.000000e+00   0.000000e+00     33s

Root relaxation: objective 4.365107e+05, 85657 iterations, 32.56 seconds
Total elapsed time = 45.60s

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

     0     0 436510.727    0   27 563604.000 436510.727  22.6%     -   47s
H    0     0                    436531.00000 436510.727  0.00%     -   48s

Explored 0 nodes (86261 simplex iterations) in 48.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.365310000000e+05, best bound 4.365110000000e+05, gap 0.0046%