Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:48:19 2013 Optimize a model with 704 rows, 41024 columns and 81984 nonzeros Presolve time: 0.06s Presolved: 704 rows, 41024 columns, 81984 nonzeros Variable types: 40960 continuous, 64 integer (64 binary) Root relaxation: objective 7.478840e+04, 1555 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74788.4018 0 15 - 74788.4018 - - 0s H 0 0 83826.000000 74788.4018 10.8% - 0s H 0 0 75510.000000 74788.4018 0.96% - 0s 0 0 75243.0871 0 6 75510.0000 75243.0871 0.35% - 0s 0 0 75269.8361 0 6 75510.0000 75269.8361 0.32% - 0s 0 0 75280.6794 0 8 75510.0000 75280.6794 0.30% - 0s 0 0 75289.9127 0 6 75510.0000 75289.9127 0.29% - 0s 0 0 75298.1685 0 5 75510.0000 75298.1685 0.28% - 0s 0 0 75298.7359 0 6 75510.0000 75298.7359 0.28% - 0s 0 0 75298.9244 0 5 75510.0000 75298.9244 0.28% - 0s 0 0 75300.1337 0 5 75510.0000 75300.1337 0.28% - 0s 0 0 75300.6702 0 5 75510.0000 75300.6702 0.28% - 0s 0 0 75300.6702 0 14 75510.0000 75300.6702 0.28% - 1s 0 0 75300.6702 0 6 75510.0000 75300.6702 0.28% - 1s 0 0 75300.6702 0 5 75510.0000 75300.6702 0.28% - 1s 0 0 75300.6702 0 5 75510.0000 75300.6702 0.28% - 1s 0 0 75300.6702 0 5 75510.0000 75300.6702 0.28% - 1s 0 0 75300.6702 0 5 75510.0000 75300.6702 0.28% - 1s 0 0 75300.6702 0 5 75510.0000 75300.6702 0.28% - 1s 0 0 75300.9071 0 5 75510.0000 75300.9071 0.28% - 1s 0 0 75301.6117 0 5 75510.0000 75301.6117 0.28% - 1s 0 0 75301.6806 0 4 75510.0000 75301.6806 0.28% - 1s 0 0 75301.6806 0 4 75510.0000 75301.6806 0.28% - 1s 0 2 75306.9083 0 4 75510.0000 75306.9083 0.27% - 1s * 19 6 7 75458.000000 75412.1730 0.06% 39.6 2s Cutting planes: Implied bound: 136 Flow cover: 11 Explored 25 nodes (4695 simplex iterations) in 2.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.545800000000e+04, best bound 7.545800000000e+04, gap 0.0%