Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:01:57 2013

Optimize a model with 836 rows, 57836 columns and 115596 nonzeros
Presolve time: 0.08s
Presolved: 836 rows, 57836 columns, 115596 nonzeros
Variable types: 57760 continuous, 76 integer (76 binary)

Root relaxation: objective 9.090831e+04, 2446 iterations, 0.08 seconds

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

     0     0 90908.3150    0   10          - 90908.3150     -      -    0s
H    0     0                    98728.000000 90908.3150  7.92%     -    0s
     0     0 91131.2548    0    7 98728.0000 91131.2548  7.69%     -    0s
H    0     0                    98130.000000 91131.2548  7.13%     -    0s
     0     0 91162.6809    0    5 98130.0000 91162.6809  7.10%     -    0s
H    0     0                    93935.127210 91162.6809  2.95%     -    0s
H    0     0                    93423.000000 91162.6809  2.42%     -    0s
     0     0 91166.0265    0    6 93423.0000 91166.0265  2.42%     -    0s
     0     0 91170.9389    0    4 93423.0000 91170.9389  2.41%     -    0s
H    0     0                    93316.000000 91170.9389  2.30%     -    0s
     0     0 91173.8316    0    4 93316.0000 91173.8316  2.30%     -    0s
H    0     0                    93299.000000 91173.8316  2.28%     -    0s
     0     0 91173.9332    0    5 93299.0000 91173.9332  2.28%     -    1s
     0     0 91174.0248    0    5 93299.0000 91174.0248  2.28%     -    1s
     0     0 91174.0248    0    5 93299.0000 91174.0248  2.28%     -    1s
     0     2 91181.9933    0    5 93299.0000 91181.9933  2.27%     -    1s
H    2     2                    93154.144617 91225.4012  2.07%  40.0    1s
H    9     9                    92229.000000 91240.0682  1.07%  51.7    1s
H   16    13                    91848.000000 91240.0682  0.66%  37.2    2s
H   17     8                    91502.000000 91240.0682  0.29%  35.5    2s
H   18     7                    91500.000000 91240.0682  0.28%  33.9    2s
*   19     7              18    91464.000000 91240.0682  0.24%  32.8    2s
*   24     4               6    91399.000000 91295.6430  0.11%  35.5    2s

Cutting planes:
  Implied bound: 130
  Flow cover: 5

Explored 31 nodes (4067 simplex iterations) in 2.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.139900000000e+04, best bound 9.139850000000e+04, gap 0.0005%