Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:22:39 2013

Optimize a model with 49840 rows, 49140 columns and 196140 nonzeros
Presolve removed 70 rows and 0 columns
Presolve time: 0.22s
Presolved: 49770 rows, 49140 columns, 196070 nonzeros
Variable types: 49070 continuous, 70 integer (70 binary)

Root relaxation: objective 5.892732e+04, 7361 iterations, 4.90 seconds

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

     0     0 58927.3196    0   60          - 58927.3196     -      -    5s
H    0     0                    102556.00000 58927.3196  42.5%     -    9s
     0     0 78786.8365    0   13 102556.000 78786.8365  23.2%     -   17s
H    0     0                    95050.917972 78786.8365  17.1%     -   17s
H    0     0                    88858.000000 78786.8365  11.3%     -   18s
     0     0 82690.6787    0    2 88858.0000 82690.6787  6.94%     -   19s
H    0     0                    85885.450224 82690.6787  3.72%     -   19s
H    0     0                    85278.000000 82690.6787  3.03%     -   19s
H    0     0                    82727.000000 82690.6787  0.04%     -   19s
     0     0     cutoff    0      82727.0000 82727.0000   0.0%     -   19s

Cutting planes:
  Implied bound: 66

Explored 0 nodes (14526 simplex iterations) in 19.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.272700000000e+04, best bound 8.272700000000e+04, gap 0.0%