Gurobi 5.0.1 (linux64) logging started Mon Feb  4 20:05:59 2013

Optimize a model with 457450 rows, 19600 columns and 1381800 nonzeros
Presolve removed 17676 rows and 9855 columns (presolve time = 5s) ...
Presolve removed 17676 rows and 9855 columns
Presolve time: 6.01s
Presolved: 439774 rows, 9745 columns, 1329317 nonzeros
Variable types: 73 continuous, 9672 integer (9672 binary)
Found heuristic solution: objective 403920.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   10395    2.2936510e+05   0.000000e+00   1.978893e+10      5s
   21735    2.3162134e+05   0.000000e+00   6.089518e+09     10s
   34965    2.3419716e+05   0.000000e+00   2.094290e+08     15s
   46354    2.3584092e+05   0.000000e+00   6.230524e+08     20s
   58658    2.3888237e+05   0.000000e+00   4.846082e+08     25s
   73837    2.4288292e+05   0.000000e+00   2.679646e+08     30s
   90885    2.4730429e+05   0.000000e+00   2.999657e+08     35s
  104160    2.4949772e+05   0.000000e+00   6.732148e+07     40s
  121201    2.5870496e+05   0.000000e+00   2.075765e+08     45s
  138211    2.6911996e+05   0.000000e+00   5.132017e+07     50s
  152399    2.8144061e+05   0.000000e+00   8.033964e+05     55s
  153650    2.8192850e+05   0.000000e+00   0.000000e+00     57s
  153650    2.8192850e+05   0.000000e+00   0.000000e+00     57s

Root relaxation: objective 2.819285e+05, 153650 iterations, 56.86 seconds
Total elapsed time = 65.52s

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

     0     0 281928.500    0   16 403920.000 281928.500  30.2%     -   65s
H    0     0                    281945.00000 281928.500  0.01%     -   66s

Explored 0 nodes (154113 simplex iterations) in 66.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.819450000000e+05, best bound 2.819290000000e+05, gap 0.0057%