Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:29:46 2013

Optimize a model with 2400 rows, 102800 columns and 215900 nonzeros
Presolve removed 100 rows and 100 columns
Presolve time: 0.26s
Presolved: 2300 rows, 102700 columns, 213800 nonzeros
Variable types: 102200 continuous, 500 integer (500 binary)

Root relaxation: objective 8.570461e+05, 5796 iterations, 0.56 seconds

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

     0     0 857046.104    0    3          - 857046.104     -      -    0s
H    0     0                    925447.43800 857046.104  7.39%     -    1s
     0     0 857083.871    0    3 925447.438 857083.871  7.39%     -    1s
     0     0 857090.244    0    3 925447.438 857090.244  7.39%     -    1s
     0     0 857104.011    0    3 925447.438 857104.011  7.38%     -    2s
     0     0 857108.406    0    3 925447.438 857108.406  7.38%     -    2s
     0     0 857108.569    0    3 925447.438 857108.569  7.38%     -    2s
     0     0 857114.220    0    3 925447.438 857114.220  7.38%     -    2s
     0     0 857116.232    0    3 925447.438 857116.232  7.38%     -    3s
     0     0 857119.775    0    3 925447.438 857119.775  7.38%     -    3s
     0     0 857121.582    0    3 925447.438 857121.582  7.38%     -    3s
     0     0 857121.713    0    3 925447.438 857121.713  7.38%     -    3s
     0     0 857122.838    0    3 925447.438 857122.838  7.38%     -    3s
     0     0 857123.424    0    3 925447.438 857123.424  7.38%     -    4s
     0     0 857123.611    0    3 925447.438 857123.611  7.38%     -    4s
     0     0 857123.755    0    3 925447.438 857123.755  7.38%     -    5s
     0     0 857123.755    0    3 925447.438 857123.755  7.38%     -    5s
     0     2 857248.940    0    3 925447.438 857248.940  7.37%     -    6s
    13    15 859012.178   13    3 925447.438 857808.825  7.31%   123   10s
H   27    23                    869416.44471 857808.825  1.34%  84.7   14s
    35    26 861158.675   35    3 869416.445 857808.825  1.34%  75.1   15s
H   54    17                    862968.76512 857808.825  0.60%  61.3   17s
   108    38 860586.250    4    3 862968.765 858181.520  0.55%  39.4   20s
H  135    28                    862305.22375 858181.520  0.48%  38.5   22s
   164    42 859211.688   26    3 862305.224 858323.367  0.46%  40.7   25s
*  168    21              30    859233.10332 858323.367  0.11%  39.9   25s
*  235    30              16    859218.37888 858886.427  0.04%  36.6   27s
H  251     5                    859022.37446 858936.688  0.01%  34.8   27s

Cutting planes:
  Flow cover: 14

Explored 251 nodes (16930 simplex iterations) in 27.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.590223744617e+05, best bound 8.589366879433e+05, gap 0.0100%