Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:59:39 2013 Optimize a model with 3200 rows, 151200 columns and 753100 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.89s Presolved: 3100 rows, 151100 columns, 703000 nonzeros Variable types: 150200 continuous, 900 integer (900 binary) Root relaxation: objective 9.053666e+05, 8336 iterations, 0.72 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 6 - 905366.638 - - 2s 0 0 905373.818 0 6 - 905373.818 - - 2s 0 0 905376.577 0 6 - 905376.577 - - 3s 0 0 905377.474 0 6 - 905377.474 - - 3s 0 0 905377.603 0 6 - 905377.603 - - 4s 0 0 905378.354 0 6 - 905378.354 - - 4s 0 0 905378.571 0 6 - 905378.571 - - 5s 0 0 905378.571 0 6 - 905378.571 - - 5s 0 0 905378.621 0 6 - 905378.621 - - 6s 0 0 905378.638 0 6 - 905378.638 - - 7s 0 0 905378.732 0 6 - 905378.732 - - 7s 0 0 905378.732 0 6 - 905378.732 - - 8s 0 2 905398.494 0 6 - 905398.494 - - 16s 5 7 906520.968 4 3 - 905443.895 - 318 20s 13 15 908218.575 12 3 - 905443.895 - 210 25s 30 32 909240.896 29 3 - 905443.895 - 118 30s 50 52 911299.158 49 1 - 905443.895 - 91.3 35s 68 70 912435.049 67 3 - 905443.895 - 82.4 40s 98 100 914285.785 97 1 - 905443.895 - 65.7 45s 150 152 914747.902 149 1 - 905443.895 - 43.8 50s 272 274 916314.357 271 1 - 905443.895 - 24.9 55s * 292 132 291 916378.10723 905443.895 1.19% 23.3 55s 304 137 907856.513 12 3 916378.107 905734.258 1.16% 26.9 60s H 321 20 908119.86566 905734.258 0.26% 26.5 62s * 336 28 43 908039.64682 905734.258 0.25% 25.6 63s * 338 27 43 908039.56266 905734.258 0.25% 25.5 63s 348 31 907513.412 9 3 908039.563 906266.749 0.20% 27.7 65s 405 63 907813.091 7 3 908039.563 906461.570 0.17% 32.8 70s 432 59 907083.685 4 6 908039.563 907083.685 0.11% 42.2 75s 486 42 907938.982 18 3 908039.563 907891.780 0.02% 46.3 80s Cutting planes: Flow cover: 19 Explored 546 nodes (33759 simplex iterations) in 82.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.080395626642e+05, best bound 9.079522075655e+05, gap 0.0096%