Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:46:11 2013 Optimize a model with 2200 rows, 101700 columns and 207600 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.28s Presolved: 2100 rows, 101600 columns, 206500 nonzeros Variable types: 101200 continuous, 400 integer (400 binary) Root relaxation: objective 9.481640e+05, 6830 iterations, 0.62 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 948163.962 0 12 - 948163.962 - - 1s H 0 0 1150046.3192 948163.962 17.6% - 1s 0 0 948320.529 0 12 1150046.32 948320.529 17.5% - 1s H 0 0 969046.71514 948320.529 2.14% - 2s 0 0 948358.808 0 12 969046.715 948358.808 2.13% - 2s 0 0 948365.175 0 12 969046.715 948365.175 2.13% - 2s 0 0 948374.362 0 12 969046.715 948374.362 2.13% - 3s 0 0 948378.683 0 12 969046.715 948378.683 2.13% - 3s 0 0 948378.683 0 12 969046.715 948378.683 2.13% - 3s 0 0 948378.726 0 12 969046.715 948378.726 2.13% - 4s 0 0 948379.924 0 12 969046.715 948379.924 2.13% - 4s 0 0 948379.924 0 12 969046.715 948379.924 2.13% - 5s 0 2 948416.121 0 12 969046.715 948416.121 2.13% - 6s 13 15 949566.083 12 3 969046.715 948452.815 2.13% 156 10s H 27 16 950377.30622 948452.815 0.20% 87.3 13s 48 15 950035.788 45 3 950377.306 948452.815 0.20% 51.4 15s 107 16 949849.340 4 3 950377.306 949345.990 0.11% 66.1 20s * 136 8 26 950276.23626 949819.989 0.05% 71.3 23s Cutting planes: Flow cover: 18 Explored 157 nodes (19151 simplex iterations) in 24.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.502762362556e+05, best bound 9.502059930357e+05, gap 0.0074%