Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:29:19 2013

Optimize a model with 682800 rows, 25600 columns and 2060800 nonzeros
Presolve removed 24680 rows and 12889 columns (presolve time = 6s) ...
Presolve removed 27457 rows and 12902 columns
Presolve time: 9.42s
Presolved: 655343 rows, 12698 columns, 1977328 nonzeros
Variable types: 72 continuous, 12626 integer (12626 binary)
Found heuristic solution: objective 576945.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8449    3.6615634e+05   0.000000e+00   8.817588e+08      6s
   15691    3.6800901e+05   0.000000e+00   7.198140e+08     10s
   26554    3.7355440e+05   0.000000e+00   1.287794e+10     15s
   37417    3.7953793e+05   0.000000e+00   4.426237e+08     20s
   51901    3.8727127e+05   0.000000e+00   2.061785e+09     25s
   65178    3.9495979e+05   0.000000e+00   7.477974e+08     30s
   79672    4.0143419e+05   0.000000e+00   7.047741e+07     35s
   95377    4.0956976e+05   0.000000e+00   3.826985e+07     40s
  111072    4.1888110e+05   0.000000e+00   4.744385e+07     45s
  123142    4.2722248e+05   0.000000e+00   1.651781e+06     51s
  127074    4.2763663e+05   0.000000e+00   0.000000e+00     55s
  127074    4.2763663e+05   0.000000e+00   0.000000e+00     55s

Root relaxation: objective 4.276366e+05, 127074 iterations, 55.44 seconds

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

     0     0 427636.630    0   17 576945.000 427636.630  25.9%     -   68s
H    0     0                    427658.00000 427636.630  0.00%     -   69s

Explored 0 nodes (127232 simplex iterations) in 69.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.276580000000e+05, best bound 4.276370000000e+05, gap 0.0049%