Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:51:34 2013

Optimize a model with 66582 rows, 65772 columns and 262602 nonzeros
Presolve removed 81 rows and 0 columns
Presolve time: 0.31s
Presolved: 66501 rows, 65772 columns, 262521 nonzeros
Variable types: 65691 continuous, 81 integer (81 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7576    6.1665781e+04   2.089609e-02   0.000000e+00      5s
    7586    6.1665782e+04   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 6.166578e+04, 7586 iterations, 5.25 seconds

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

     0     0 61665.7823    0   61          - 61665.7823     -      -    5s
H    0     0                    92405.000000 61665.7823  33.3%     -    8s
H    0     0                    79220.000000 61665.7823  22.2%     -   21s
     0     0 71926.7309    0   15 79220.0000 71926.7309  9.21%     -   29s
     0     0 73918.3574    0    6 79220.0000 73918.3574  6.69%     -   31s
     0     0 74627.9409    0    3 79220.0000 74627.9409  5.80%     -   33s
H    0     0                    78389.203299 74627.9409  4.80%     -   33s
H    0     0                    77143.000000 74627.9409  3.26%     -   33s
H    0     0                    74974.000000 74627.9409  0.46%     -   33s
     0     0 74635.4075    0    5 74974.0000 74635.4075  0.45%     -   33s
     0     0 74637.7938    0    2 74974.0000 74637.7938  0.45%     -   33s
     0     2 74647.0097    0    2 74974.0000 74647.0097  0.44%     -   35s
*    4     1               3    74800.000000 74800.0000   0.0%   362   36s

Cutting planes:
  Implied bound: 74

Explored 5 nodes (16686 simplex iterations) in 36.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.480000000000e+04, best bound 7.480000000000e+04, gap 0.0%