Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:57:45 2013 Optimize a model with 2000 rows, 102100 columns and 206700 nonzeros Presolve removed 100 rows and 700 columns Presolve time: 0.26s Presolved: 1900 rows, 101400 columns, 205700 nonzeros Variable types: 101100 continuous, 300 integer (300 binary) Root relaxation: objective 9.481640e+05, 6856 iterations, 0.60 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 948163.962 0 4 - 948163.962 - - 1s H 0 0 1045693.0343 948163.962 9.33% - 1s 0 0 948316.869 0 4 1045693.03 948316.869 9.31% - 1s 0 0 948357.918 0 4 1045693.03 948357.918 9.31% - 1s 0 0 948373.445 0 4 1045693.03 948373.445 9.31% - 2s 0 0 948373.445 0 4 1045693.03 948373.445 9.31% - 2s 0 0 948373.909 0 4 1045693.03 948373.909 9.31% - 2s 0 0 948379.020 0 4 1045693.03 948379.020 9.31% - 2s 0 0 948379.985 0 4 1045693.03 948379.985 9.31% - 3s 0 0 948381.612 0 4 1045693.03 948381.612 9.31% - 3s 0 0 948381.617 0 4 1045693.03 948381.617 9.31% - 3s 0 0 948381.936 0 4 1045693.03 948381.936 9.31% - 4s 0 0 948382.280 0 4 1045693.03 948382.280 9.31% - 4s 0 0 948382.487 0 4 1045693.03 948382.487 9.31% - 5s 0 0 948382.487 0 4 1045693.03 948382.487 9.31% - 5s 0 2 948383.087 0 4 1045693.03 948383.087 9.31% - 6s 14 16 949599.735 11 1 1045693.03 948536.386 9.29% 171 10s H 27 14 950393.79984 948536.386 0.20% 100 11s * 28 12 24 950276.23626 948536.386 0.18% 98.4 11s 59 9 949988.247 11 2 950276.236 949510.281 0.08% 123 15s H 81 13 950067.53247 949767.629 0.03% 103 16s Cutting planes: Flow cover: 30 Explored 135 nodes (17493 simplex iterations) in 18.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.500675324736e+05, best bound 9.499766843967e+05, gap 0.0096%