Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:49:04 2013

Optimize a model with 55648 rows, 54908 columns and 219188 nonzeros
Presolve removed 74 rows and 0 columns
Presolve time: 0.25s
Presolved: 55574 rows, 54908 columns, 219114 nonzeros
Variable types: 54834 continuous, 74 integer (74 binary)

Root relaxation: objective 6.042435e+04, 6400 iterations, 4.70 seconds

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

     0     0 60424.3526    0   53          - 60424.3526     -      -    5s
H    0     0                    89512.000000 60424.3526  32.5%     -    8s
H    0     0                    76987.000000 60424.3526  21.5%     -   24s
     0     0 71585.3258    0   17 76987.0000 71585.3258  7.02%     -   31s
     0     0 72782.4859    0   11 76987.0000 72782.4859  5.46%     -   33s
H    0     0                    76558.000000 72782.4859  4.93%     -   33s
     0     0 73296.6294    0    9 76558.0000 73296.6294  4.26%     -   34s
     0     0 73449.4533    0    5 76558.0000 73449.4533  4.06%     -   34s
     0     2 73450.3742    0    5 76558.0000 73450.3742  4.06%     -   36s
H    6     6                    75917.638187 73604.3083  3.05%   172   37s
H    8     8                    75492.827586 73604.3083  2.50%   186   37s
H   16    10                    74636.500000 73604.3083  1.38%   147   38s
H   21     9                    74313.428571 73604.3083  0.95%   122   38s
    30    12 73738.6755    3    4 74313.4286 73717.5477  0.80%   123   40s
H   32     9                    73971.060484 73717.5477  0.34%   116   40s
*   34     6               7    73758.000000 73717.5477  0.05%   111   40s

Cutting planes:
  Implied bound: 72

Explored 40 nodes (18266 simplex iterations) in 40.36 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.375800000000e+04, best bound 7.375800000000e+04, gap 0.0%