Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:42:18 2013

Optimize a model with 39184 rows, 38564 columns and 153884 nonzeros
Presolve removed 62 rows and 0 columns
Presolve time: 0.17s
Presolved: 39122 rows, 38564 columns, 153822 nonzeros
Variable types: 38502 continuous, 62 integer (62 binary)

Root relaxation: objective 5.801165e+04, 7015 iterations, 4.54 seconds

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

     0     0 58011.6504    0   52          - 58011.6504     -      -    4s
H    0     0                    95079.000000 58011.6504  39.0%     -    7s
     0     0 77066.2185    0   14 95079.0000 77066.2185  18.9%     -   11s
H    0     0                    88311.181763 77066.2185  12.7%     -   11s
H    0     0                    81987.000000 77066.2185  6.00%     -   11s
H    0     0                    80036.000000 77066.2185  3.71%     -   11s
     0     0 77540.6282    0    6 80036.0000 77540.6282  3.12%     -   12s
H    0     0                    79835.000000 77540.6282  2.87%     -   12s
     0     0 77590.9223    0    3 79835.0000 77590.9223  2.81%     -   12s
H    0     0                    79349.000000 77590.9223  2.22%     -   12s
H    0     0                    77692.000000 77590.9223  0.13%     -   12s
     0     2 77598.7845    0    3 77692.0000 77598.7845  0.12%     -   13s

Cutting planes:
  Gomory: 1
  Implied bound: 58
  MIR: 1

Explored 6 nodes (13323 simplex iterations) in 13.82 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.769200000000e+04, best bound 7.769200000000e+04, gap 0.0%