Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:27:52 2013

Optimize a model with 682800 rows, 25600 columns and 2060800 nonzeros
Presolve removed 20510 rows and 12861 columns (presolve time = 5s) ...
Presolve removed 24376 rows and 12880 columns
Presolve time: 9.49s
Presolved: 658424 rows, 12720 columns, 1986883 nonzeros
Variable types: 74 continuous, 12646 integer (12646 binary)
Found heuristic solution: objective 561445.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7242    3.3393054e+05   0.000000e+00   9.313471e+08      6s
   14484    3.3851654e+05   0.000000e+00   3.457463e+09     10s
   22933    3.4292201e+05   0.000000e+00   5.503421e+09     16s
   32589    3.4965320e+05   0.000000e+00   2.415976e+08     20s
   43452    3.5793679e+05   0.000000e+00   4.348580e+08     25s
   57939    3.6829924e+05   0.000000e+00   2.115196e+08     30s
   72423    3.7611272e+05   0.000000e+00   3.943830e+08     35s
   85705    3.8425442e+05   0.000000e+00   3.865276e+07     40s
  100189    3.9590921e+05   0.000000e+00   5.644018e+06     45s
  109845    4.0106863e+05   0.000000e+00   1.601163e+06     51s
  113316    4.0108609e+05   0.000000e+00   0.000000e+00     56s
  113316    4.0108609e+05   0.000000e+00   0.000000e+00     56s

Root relaxation: objective 4.010861e+05, 113316 iterations, 55.98 seconds

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

     0     0 401086.091    0   19 561445.000 401086.091  28.6%     -   69s
H    0     0                    401097.00000 401086.091  0.00%     -   70s

Explored 0 nodes (113836 simplex iterations) in 70.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.010970000000e+05, best bound 4.010870000000e+05, gap 0.0025%