Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:19:22 2013 Optimize a model with 770 rows, 49070 columns and 98070 nonzeros Presolve time: 0.07s Presolved: 770 rows, 49070 columns, 98070 nonzeros Variable types: 49000 continuous, 70 integer (70 binary) Root relaxation: objective 6.269228e+04, 1448 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 62692.2832 0 9 - 62692.2832 - - 0s H 0 0 67593.000000 62692.2832 7.25% - 0s 0 0 62906.6263 0 5 67593.0000 62906.6263 6.93% - 0s 0 0 62910.5869 0 5 67593.0000 62910.5869 6.93% - 0s H 0 0 66931.000000 62910.5869 6.01% - 0s 0 0 62913.0011 0 4 66931.0000 62913.0011 6.00% - 0s H 0 0 66893.000000 62913.0011 5.95% - 0s 0 0 62916.2540 0 1 66893.0000 62916.2540 5.94% - 0s H 0 0 65150.984127 62916.2540 3.43% - 0s H 0 0 64833.000000 62916.2540 2.96% - 0s 0 0 62916.7619 0 1 64833.0000 62916.7619 2.96% - 0s 0 0 62916.7619 0 1 64833.0000 62916.7619 2.96% - 0s 0 0 62916.7619 0 9 64833.0000 62916.7619 2.96% - 1s H 0 0 63382.000000 62916.7619 0.73% - 1s 0 0 62916.7619 0 5 63382.0000 62916.7619 0.73% - 1s 0 0 62916.7619 0 5 63382.0000 62916.7619 0.73% - 1s 0 0 62916.7619 0 4 63382.0000 62916.7619 0.73% - 1s 0 0 62916.7619 0 1 63382.0000 62916.7619 0.73% - 1s 0 0 62916.7619 0 1 63382.0000 62916.7619 0.73% - 1s 0 0 62916.7619 0 1 63382.0000 62916.7619 0.73% - 1s 0 0 62916.7619 0 1 63382.0000 62916.7619 0.73% - 1s 0 2 62917.5556 0 1 63382.0000 62917.5556 0.73% - 1s H 6 3 62982.000000 62930.0000 0.08% 17.0 1s H 9 1 62971.696429 62943.0714 0.05% 16.7 1s * 12 0 11 62948.000000 62948.0000 0.0% 14.7 1s Cutting planes: Implied bound: 53 Flow cover: 9 Explored 13 nodes (3695 simplex iterations) in 1.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.294800000000e+04, best bound 6.294800000000e+04, gap 0.0%