Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:05:12 2013

Optimize a model with 457450 rows, 19600 columns and 1381800 nonzeros
Presolve removed 18112 rows and 9872 columns (presolve time = 5s) ...
Presolve removed 18246 rows and 9872 columns
Presolve time: 6.39s
Presolved: 439204 rows, 9728 columns, 1325828 nonzeros
Variable types: 60 continuous, 9668 integer (9668 binary)
Found heuristic solution: objective 469658.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11340    3.0429348e+05   0.000000e+00   2.349167e+08      5s
   29300    3.1354048e+05   0.000000e+00   7.482035e+07     10s
   47255    3.2747060e+05   0.000000e+00   6.687443e+07     15s
   65210    3.4254875e+05   0.000000e+00   1.319112e+07     20s
   77479    3.4940433e+05   3.333333e-01   0.000000e+00     26s
   77481    3.4940433e+05   0.000000e+00   0.000000e+00     26s
   77481    3.4940433e+05   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 3.494043e+05, 77481 iterations, 25.90 seconds
Total elapsed time = 35.04s

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

     0     0 349404.333    0   25 469658.000 349404.333  25.6%     -   36s
H    0     0                    349439.00000 349404.333  0.01%     -   36s

Explored 0 nodes (78519 simplex iterations) in 36.28 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.494390000000e+05, best bound 3.494050000000e+05, gap 0.0097%