Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:41:50 2013 Optimize a model with 1400 rows, 100500 columns and 201000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.27s Presolved: 1600 rows, 100600 columns, 201300 nonzeros Variable types: 100400 continuous, 200 integer (200 binary) Root relaxation: objective 7.918217e+05, 6344 iterations, 0.92 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 4 - 791821.709 - - 1s H 0 0 816232.34988 791821.709 2.99% - 2s H 0 0 810636.36370 791821.709 2.32% - 2s 0 0 791888.688 0 4 810636.364 791888.688 2.31% - 3s 0 0 791943.411 0 4 810636.364 791943.411 2.31% - 3s 0 0 791945.727 0 4 810636.364 791945.727 2.31% - 3s 0 0 791947.287 0 4 810636.364 791947.287 2.31% - 3s 0 0 791964.949 0 4 810636.364 791964.949 2.30% - 4s 0 0 791964.949 0 4 810636.364 791964.949 2.30% - 4s 0 0 791967.625 0 4 810636.364 791967.625 2.30% - 4s 0 0 791968.690 0 4 810636.364 791968.690 2.30% - 5s 0 0 791970.233 0 4 810636.364 791970.233 2.30% - 5s 0 0 791970.933 0 4 810636.364 791970.933 2.30% - 5s 0 0 791971.301 0 4 810636.364 791971.301 2.30% - 6s 0 0 791971.676 0 4 810636.364 791971.676 2.30% - 6s 0 0 791971.865 0 4 810636.364 791971.865 2.30% - 6s 0 0 791971.974 0 4 810636.364 791971.974 2.30% - 7s 0 0 791972.060 0 4 810636.364 791972.060 2.30% - 7s 0 0 791972.128 0 4 810636.364 791972.128 2.30% - 7s 0 0 791972.162 0 4 810636.364 791972.162 2.30% - 8s 0 0 791972.162 0 4 810636.364 791972.162 2.30% - 9s 0 2 792018.482 0 4 810636.364 792018.482 2.30% - 9s 1 3 792576.606 1 2 810636.364 792576.606 2.23% 502 10s * 17 7 16 793357.35859 792678.090 0.09% 74.2 15s * 28 2 4 793200.24980 792891.038 0.04% 69.2 17s Cutting planes: Flow cover: 24 Explored 37 nodes (11317 simplex iterations) in 18.68 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%