Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:09:14 2013

Optimize a model with 76153 rows, 5929 columns and 231231 nonzeros
Presolve removed 6784 rows and 3017 columns
Presolve time: 0.67s
Presolved: 69369 rows, 2912 columns, 210989 nonzeros
Variable types: 39 continuous, 2873 integer (2873 binary)
Found heuristic solution: objective 123335.00000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   38857    8.8928277e+04   0.000000e+00   4.530836e+05      5s
   40948    9.0711102e+04   0.000000e+00   0.000000e+00      5s
   40948    9.0711102e+04   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 9.071110e+04, 40948 iterations, 5.28 seconds

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

     0     0 90711.1023    0    7 123335.000 90711.1023  26.5%     -    6s
H    0     0                    90724.000000 90711.1023  0.01%     -    6s
H    0     0                    90717.000000 90711.1023  0.01%     -    6s

Explored 0 nodes (41004 simplex iterations) in 6.34 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.071700000000e+04, best bound 9.071200000000e+04, gap 0.0055%