Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:31:05 2013

Optimize a model with 35518 rows, 34928 columns and 139358 nonzeros
Presolve removed 59 rows and 0 columns
Presolve time: 0.15s
Presolved: 35459 rows, 34928 columns, 139299 nonzeros
Variable types: 34869 continuous, 59 integer (59 binary)

Root relaxation: objective 5.310580e+04, 5689 iterations, 3.14 seconds

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

     0     0 53105.8003    0   47          - 53105.8003     -      -    3s
H    0     0                    77153.000000 53105.8003  31.2%     -    4s
     0     0 67298.0834    0    5 77153.0000 67298.0834  12.8%     -    6s
H    0     0                    73582.302628 67298.0834  8.54%     -    7s
H    0     0                    70800.000000 67298.0834  4.95%     -    7s
H    0     0                    70570.000000 67298.0834  4.64%     -    7s
     0     0 67752.3451    0    2 70570.0000 67752.3451  3.99%     -    7s
H    0     0                    69356.725894 67752.3451  2.31%     -    7s
H    0     0                    69071.000000 67752.3451  1.91%     -    7s
H    0     0                    67808.000000 67752.3451  0.08%     -    7s
     0     0 67805.2925    0    3 67808.0000 67805.2925  0.00%     -    7s

Cutting planes:
  Implied bound: 47

Explored 0 nodes (9054 simplex iterations) in 7.90 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.780800000000e+04, best bound 6.780529252094e+04, gap 0.0040%