Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:29:41 2013 Optimize a model with 1600 rows, 100700 columns and 201900 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.35s Presolved: 1500 rows, 100600 columns, 201500 nonzeros Variable types: 100500 continuous, 100 integer (100 binary) Root relaxation: objective 7.918217e+05, 7330 iterations, 0.67 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 2 - 791821.709 - - 1s H 0 0 810636.36370 791821.709 2.32% - 1s 0 0 791887.106 0 2 810636.364 791887.106 2.31% - 1s 0 0 791947.938 0 2 810636.364 791947.938 2.31% - 1s 0 0 791949.880 0 2 810636.364 791949.880 2.31% - 2s 0 0 791951.169 0 2 810636.364 791951.169 2.31% - 2s 0 0 791963.564 0 2 810636.364 791963.564 2.30% - 2s 0 0 791966.113 0 2 810636.364 791966.113 2.30% - 3s 0 0 791968.014 0 2 810636.364 791968.014 2.30% - 3s 0 0 791968.974 0 2 810636.364 791968.974 2.30% - 3s 0 0 791969.444 0 2 810636.364 791969.444 2.30% - 3s 0 0 791969.939 0 2 810636.364 791969.939 2.30% - 3s 0 0 791970.420 0 2 810636.364 791970.420 2.30% - 4s 0 0 791970.859 0 2 810636.364 791970.859 2.30% - 4s 0 0 791970.859 0 2 810636.364 791970.859 2.30% - 4s 0 2 792019.050 0 2 810636.364 792019.050 2.30% - 5s * 17 6 16 793357.35859 792627.126 0.09% 64.7 7s * 31 1 5 793200.24980 793024.070 0.02% 79.3 9s Cutting planes: Flow cover: 19 Explored 40 nodes (11411 simplex iterations) in 9.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.932002498024e+05, gap 0.0000%