Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:49:43 2013

Optimize a model with 41728 rows, 41088 columns and 163968 nonzeros
Presolve removed 64 rows and 0 columns
Presolve time: 0.19s
Presolved: 41664 rows, 41088 columns, 163904 nonzeros
Variable types: 41024 continuous, 64 integer (64 binary)

Root relaxation: objective 5.862503e+04, 6143 iterations, 3.40 seconds

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

     0     0 58625.0291    0   51          - 58625.0291     -      -    3s
H    0     0                    88711.000000 58625.0291  33.9%     -    5s
     0     0 74927.0093    0   12 88711.0000 74927.0093  15.5%     -    9s
H    0     0                    87402.207323 74927.0093  14.3%     -    9s
H    0     0                    82445.000000 74927.0093  9.12%     -   10s
     0     0 77418.1902    0    5 82445.0000 77418.1902  6.10%     -   10s
H    0     0                    80262.891729 77418.1902  3.54%     -   11s
H    0     0                    79248.000000 77418.1902  2.31%     -   11s
H    0     0                    77570.000000 77418.1902  0.20%     -   11s
     0     0 77427.9626    0    5 77570.0000 77427.9626  0.18%     -   11s
H    0     0                    77568.000000 77427.9626  0.18%     -   11s
     0     2 77451.6982    0    5 77568.0000 77451.6982  0.15%     -   12s

Cutting planes:
  Implied bound: 59

Explored 11 nodes (12457 simplex iterations) in 12.64 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.756800000000e+04, best bound 7.756800000000e+04, gap 0.0%