Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:39:39 2013 Optimize a model with 2600 rows, 102300 columns and 207500 nonzeros Presolve removed 200 rows and 200 columns Presolve time: 0.93s Presolved: 2400 rows, 102100 columns, 206800 nonzeros Variable types: 101200 continuous, 900 integer (900 binary) Root relaxation: objective 7.543716e+05, 6195 iterations, 0.66 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 4 - 754371.571 - - 1s H 0 0 846215.37606 754371.571 10.9% - 2s 0 0 754451.876 0 3 846215.376 754451.876 10.8% - 2s 0 0 754493.185 0 5 846215.376 754493.185 10.8% - 3s 0 0 754514.654 0 4 846215.376 754514.654 10.8% - 3s 0 0 754516.784 0 4 846215.376 754516.784 10.8% - 3s 0 0 754518.731 0 4 846215.376 754518.731 10.8% - 4s 0 0 754526.793 0 4 846215.376 754526.793 10.8% - 4s 0 0 754527.254 0 4 846215.376 754527.254 10.8% - 5s 0 0 754528.069 0 4 846215.376 754528.069 10.8% - 5s 0 0 754529.436 0 4 846215.376 754529.436 10.8% - 6s 0 0 754529.436 0 4 846215.376 754529.436 10.8% - 8s 0 2 754542.771 0 4 846215.376 754542.771 10.8% - 9s 3 5 754792.401 2 1 846215.376 754792.401 10.8% 259 10s 26 28 755262.560 25 2 846215.376 754792.401 10.8% 73.1 15s H 27 25 759977.59202 754792.401 0.68% 70.4 15s * 45 24 44 755679.58081 754792.401 0.12% 58.2 18s 49 23 755678.846 4 3 755679.581 754812.420 0.11% 80.6 20s 118 56 755583.344 71 1 755679.581 754812.420 0.11% 42.4 25s 143 60 755528.546 9 2 755679.581 754900.987 0.10% 51.0 30s 185 58 cutoff 7 755679.581 755114.727 0.07% 55.7 35s Cutting planes: Flow cover: 33 Explored 249 nodes (20048 simplex iterations) in 39.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556795808113e+05, best bound 7.556106917189e+05, gap 0.0091%