Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:42:46 2013 Optimize a model with 2600 rows, 102300 columns and 207500 nonzeros Presolve removed 200 rows and 200 columns Presolve time: 0.70s Presolved: 2400 rows, 102100 columns, 206800 nonzeros Variable types: 101200 continuous, 900 integer (900 binary) Root relaxation: objective 7.918217e+05, 6174 iterations, 0.75 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 924415.35381 791821.709 14.3% - 1s H 0 0 801517.93305 791821.709 1.21% - 3s 0 0 791888.424 0 2 801517.933 791888.424 1.20% - 3s 0 0 791948.861 0 2 801517.933 791948.861 1.19% - 3s 0 0 791952.998 0 2 801517.933 791952.998 1.19% - 3s 0 0 791952.998 0 2 801517.933 791952.998 1.19% - 4s 0 0 791964.236 0 2 801517.933 791964.236 1.19% - 4s 0 0 791964.236 0 2 801517.933 791964.236 1.19% - 5s 0 0 791967.760 0 2 801517.933 791967.760 1.19% - 5s 0 0 791967.844 0 2 801517.933 791967.844 1.19% - 5s 0 0 791968.847 0 2 801517.933 791968.847 1.19% - 6s 0 0 791969.575 0 2 801517.933 791969.575 1.19% - 6s 0 0 791969.921 0 2 801517.933 791969.921 1.19% - 6s 0 0 791970.319 0 2 801517.933 791970.319 1.19% - 7s 0 0 791970.490 0 2 801517.933 791970.490 1.19% - 7s 0 0 791970.490 0 2 801517.933 791970.490 1.19% - 7s 0 2 792019.234 0 2 801517.933 792019.234 1.19% - 8s 16 18 793022.211 15 1 801517.933 792666.717 1.10% 59.8 10s * 35 17 34 793505.77764 792666.717 0.11% 48.7 12s 80 40 793345.897 2 2 793505.778 792797.687 0.09% 45.9 15s * 107 13 5 793200.24980 792999.852 0.03% 44.9 16s Cutting planes: Flow cover: 20 Explored 123 nodes (12843 simplex iterations) in 16.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.931471205771e+05, gap 0.0067%