Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:43:10 2013

Optimize a model with 64960 rows, 64160 columns and 256160 nonzeros
Presolve removed 80 rows and 0 columns
Presolve time: 0.30s
Presolved: 64880 rows, 64160 columns, 256080 nonzeros
Variable types: 64080 continuous, 80 integer (80 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7179    6.6153604e+04   8.601642e+03   0.000000e+00      5s
Warning: Markowitz tolerance tightened to 0.125
    8235    6.6520080e+04   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 6.652008e+04, 8235 iterations, 7.31 seconds

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

     0     0 66520.0805    0   60          - 66520.0805     -      -    7s
H    0     0                    115410.00000 66520.0805  42.4%     -   13s
     0     0 85427.9751    0   20 115410.000 85427.9751  26.0%     -   27s
H    0     0                    102542.00000 85427.9751  16.7%     -   28s
     0     0 90301.1956    0    8 102542.000 90301.1956  11.9%     -   31s
H    0     0                    102335.61555 90301.1956  11.8%     -   31s
H    0     0                    99814.000000 90301.1956  9.53%     -   31s
     0     0 91271.2086    0    2 99814.0000 91271.2086  8.56%     -   33s
H    0     0                    92648.151429 91271.2086  1.49%     -   33s
H    0     0                    92305.000000 91271.2086  1.12%     -   33s
H    0     0                    91279.000000 91271.2086  0.01%     -   34s

Cutting planes:
  Implied bound: 77

Explored 0 nodes (20062 simplex iterations) in 34.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.127900000000e+04, best bound 9.127120857143e+04, gap 0.0085%