Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:48:26 2013 Optimize a model with 2200 rows, 101700 columns and 207600 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.54s Presolved: 2100 rows, 101600 columns, 206500 nonzeros Variable types: 101200 continuous, 400 integer (400 binary) Root relaxation: objective 7.918217e+05, 7167 iterations, 0.95 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 6 - 791821.709 - - 1s H 0 0 924415.35381 791821.709 14.3% - 2s H 0 0 801517.93305 791821.709 1.21% - 3s 0 0 791888.160 0 6 801517.933 791888.160 1.20% - 3s 0 0 791949.993 0 6 801517.933 791949.993 1.19% - 3s 0 0 791950.616 0 6 801517.933 791950.616 1.19% - 4s 0 0 791951.236 0 6 801517.933 791951.236 1.19% - 4s 0 0 791959.279 0 6 801517.933 791959.279 1.19% - 5s 0 0 791965.902 0 6 801517.933 791965.902 1.19% - 5s 0 0 791969.176 0 6 801517.933 791969.176 1.19% - 6s 0 0 791969.176 0 6 801517.933 791969.176 1.19% - 6s 0 0 791969.176 0 6 801517.933 791969.176 1.19% - 6s 0 0 791969.176 0 6 801517.933 791969.176 1.19% - 7s 0 0 791969.176 0 6 801517.933 791969.176 1.19% - 8s 0 2 792019.777 0 6 801517.933 792019.777 1.19% - 9s 1 3 792576.606 1 3 801517.933 792576.606 1.12% 534 10s 11 10 792918.387 10 3 801517.933 792677.894 1.10% 88.1 15s * 18 7 17 793357.35859 792677.894 0.09% 74.6 17s 25 5 793232.322 8 3 793357.359 792822.399 0.07% 70.0 20s * 30 3 5 793200.24980 792901.859 0.04% 68.9 20s Cutting planes: Flow cover: 17 Explored 41 nodes (12094 simplex iterations) in 21.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.931494696619e+05, gap 0.0064%