Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:41:46 2013 Optimize a model with 3000 rows, 152200 columns and 641700 nonzeros Presolve removed 100 rows and 11300 columns Presolve time: 0.76s Presolved: 2900 rows, 140900 columns, 601700 nonzeros Variable types: 140100 continuous, 800 integer (800 binary) Root relaxation: objective 7.543716e+05, 7013 iterations, 0.60 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 20 - 754371.571 - - 1s 0 0 754396.157 0 15 - 754396.157 - - 2s 0 0 754405.992 0 15 - 754405.992 - - 2s 0 0 754406.430 0 15 - 754406.430 - - 3s 0 0 754411.189 0 15 - 754411.189 - - 3s 0 0 754413.068 0 20 - 754413.068 - - 4s 0 0 754413.645 0 15 - 754413.645 - - 4s 0 0 754414.857 0 15 - 754414.857 - - 4s 0 0 754415.698 0 20 - 754415.698 - - 5s 0 0 754416.282 0 15 - 754416.282 - - 5s 0 0 754416.687 0 20 - 754416.687 - - 6s 0 0 754416.921 0 15 - 754416.921 - - 6s 0 0 754417.335 0 15 - 754417.335 - - 7s 0 0 754417.335 0 15 - 754417.335 - - 7s 0 0 754417.335 0 15 - 754417.335 - - 8s 0 0 754417.335 0 15 - 754417.335 - - 10s H 0 0 758486.57004 754417.335 0.54% - 11s 0 2 754421.959 0 15 758486.570 754421.959 0.54% - 13s 2 4 754769.728 2 5 758486.570 754519.399 0.52% 506 15s 31 29 755474.033 30 5 758486.570 754519.399 0.52% 65.8 20s H 54 30 755705.75473 754519.399 0.16% 43.9 24s 59 30 755684.931 54 5 755705.755 754519.399 0.16% 40.8 25s * 67 31 62 755705.46723 754519.399 0.16% 36.9 25s 123 60 754957.269 3 17 755705.467 754775.951 0.12% 37.0 30s 191 77 755475.660 21 10 755705.467 754957.269 0.10% 46.3 35s 255 89 755538.906 7 4 755705.467 755125.090 0.08% 53.0 40s 357 35 cutoff 47 755705.467 755524.666 0.02% 47.4 45s H 386 43 755691.71088 755525.174 0.02% 44.1 45s * 434 49 64 755688.37541 755540.757 0.02% 40.4 46s * 493 64 63 755686.66901 755564.466 0.02% 36.4 48s Cutting planes: Flow cover: 21 Explored 536 nodes (28829 simplex iterations) in 49.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556866690144e+05, best bound 7.556137694546e+05, gap 0.0096%