Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:34:20 2013

Optimize a model with 682800 rows, 25600 columns and 2060800 nonzeros
Presolve removed 28537 rows and 12920 columns (presolve time = 6s) ...
Presolve removed 32246 rows and 12945 columns (presolve time = 10s) ...
Presolve removed 32246 rows and 12945 columns
Presolve time: 10.82s
Presolved: 650554 rows, 12655 columns, 1961076 nonzeros
Variable types: 60 continuous, 12595 integer (12595 binary)
Found heuristic solution: objective 593698.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7242    3.9010401e+05   0.000000e+00   8.213234e+08      5s
   16898    3.9190618e+05   0.000000e+00   7.771961e+08     10s
   30175    3.9795522e+05   0.000000e+00   2.069432e+08     15s
   47073    4.0580954e+05   0.000000e+00   1.346988e+08     20s
   63971    4.1318957e+05   0.000000e+00   7.781682e+08     25s
   80869    4.2055825e+05   0.000000e+00   6.780482e+07     30s
  100181    4.2956170e+05   0.000000e+00   1.715424e+07     35s
  112251    4.3853269e+05   0.000000e+00   5.834620e+05     41s
  115363    4.3917091e+05   0.000000e+00   0.000000e+00     45s
  115363    4.3917091e+05   0.000000e+00   0.000000e+00     45s

Root relaxation: objective 4.391709e+05, 115363 iterations, 44.73 seconds

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

     0     0 439170.909    0   20 593698.000 439170.909  26.0%     -   60s
H    0     0                    439182.00000 439170.909  0.00%     -   60s

Explored 0 nodes (115924 simplex iterations) in 60.60 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.391820000000e+05, best bound 4.391710000000e+05, gap 0.0025%