Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:10:39 2013

Optimize a model with 550 rows, 25050 columns and 50050 nonzeros
Presolve time: 0.03s
Presolved: 550 rows, 25050 columns, 50050 nonzeros
Variable types: 25000 continuous, 50 integer (50 binary)

Root relaxation: objective 6.616928e+04, 1526 iterations, 0.03 seconds

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

     0     0 66169.2770    0    6          - 66169.2770     -      -    0s
H    0     0                    67361.000000 66169.2770  1.77%     -    0s
     0     0 66513.4639    0    4 67361.0000 66513.4639  1.26%     -    0s
H    0     0                    66947.000000 66513.4639  0.65%     -    0s
     0     0 66565.4181    0    2 66947.0000 66565.4181  0.57%     -    0s
H    0     0                    66721.171633 66565.4181  0.23%     -    0s
H    0     0                    66639.000000 66565.4181  0.11%     -    0s
     0     0 66567.3234    0    3 66639.0000 66567.3234  0.11%     -    0s
     0     0 66570.6151    0    2 66639.0000 66570.6151  0.10%     -    0s
     0     0 66570.6429    0    1 66639.0000 66570.6429  0.10%     -    0s
     0     0 66570.6429    0    1 66639.0000 66570.6429  0.10%     -    0s
     0     0 66570.6429    0    5 66639.0000 66570.6429  0.10%     -    0s
     0     0 66570.6429    0    5 66639.0000 66570.6429  0.10%     -    0s
     0     0 66570.6429    0    2 66639.0000 66570.6429  0.10%     -    0s
     0     0 66570.6429    0    4 66639.0000 66570.6429  0.10%     -    0s
     0     0 66570.6429    0    3 66639.0000 66570.6429  0.10%     -    0s
H    0     0                    66631.000000 66570.6429  0.09%     -    0s
     0     0 66570.6429    0    2 66631.0000 66570.6429  0.09%     -    0s
     0     0 66570.6429    0    2 66631.0000 66570.6429  0.09%     -    0s
     0     0 66570.6429    0    1 66631.0000 66570.6429  0.09%     -    0s
     0     0 66592.5455    0    1 66631.0000 66592.5455  0.06%     -    0s
     0     0 66599.7850    0    1 66631.0000 66599.7850  0.05%     -    0s
*    0     0               0    66607.000000 66607.0000   0.0%     -    0s

Cutting planes:
  Implied bound: 46
  Flow cover: 1

Explored 0 nodes (3227 simplex iterations) in 0.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.660700000000e+04, best bound 6.660700000000e+04, gap 0.0%