Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:02:24 2013 Optimize a model with 737 rows, 44957 columns and 89847 nonzeros Presolve time: 0.06s Presolved: 737 rows, 44957 columns, 89847 nonzeros Variable types: 44890 continuous, 67 integer (67 binary) Root relaxation: objective 6.657123e+04, 1481 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66571.2258 0 17 - 66571.2258 - - 0s H 0 0 72789.000000 66571.2258 8.54% - 0s 0 0 66944.6004 0 8 72789.0000 66944.6004 8.03% - 0s H 0 0 71928.000000 66944.6004 6.93% - 0s H 0 0 67292.000000 66944.6004 0.52% - 0s 0 0 66986.3399 0 6 67292.0000 66986.3399 0.45% - 0s 0 0 66997.2329 0 6 67292.0000 66997.2329 0.44% - 0s 0 0 66998.6648 0 6 67292.0000 66998.6648 0.44% - 0s 0 0 66999.8726 0 4 67292.0000 66999.8726 0.43% - 0s 0 0 67000.9252 0 4 67292.0000 67000.9252 0.43% - 0s H 0 0 67132.000000 67000.9252 0.20% - 0s 0 0 67000.9252 0 16 67132.0000 67000.9252 0.20% - 1s 0 0 67000.9252 0 8 67132.0000 67000.9252 0.20% - 1s 0 0 67000.9252 0 7 67132.0000 67000.9252 0.20% - 1s 0 0 67005.8653 0 7 67132.0000 67005.8653 0.19% - 1s 0 0 67007.9857 0 6 67132.0000 67007.9857 0.18% - 1s 0 0 67009.0879 0 4 67132.0000 67009.0879 0.18% - 1s 0 0 67009.1102 0 4 67132.0000 67009.1102 0.18% - 1s 0 0 67009.3990 0 4 67132.0000 67009.3990 0.18% - 1s 0 0 67022.3973 0 6 67132.0000 67022.3973 0.16% - 1s 0 0 67051.5890 0 4 67132.0000 67051.5890 0.12% - 1s 0 0 67059.9555 0 3 67132.0000 67059.9555 0.11% - 1s 0 2 67060.2841 0 3 67132.0000 67060.2841 0.11% - 1s Cutting planes: Implied bound: 108 Flow cover: 3 Explored 6 nodes (4089 simplex iterations) in 1.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.713200000000e+04, best bound 6.713112903226e+04, gap 0.0013%