Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:03:04 2013 Optimize a model with 2100 rows, 101300 columns and 204000 nonzeros Presolve removed 200 rows and 200 columns Presolve time: 1.08s Presolved: 1900 rows, 101100 columns, 203300 nonzeros Variable types: 100700 continuous, 400 integer (400 binary) Root relaxation: objective 7.543716e+05, 5252 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 799636.19752 754371.571 5.66% - 2s 0 0 754449.951 0 4 799636.198 754449.951 5.65% - 3s 0 0 754488.436 0 2 799636.198 754488.436 5.65% - 3s 0 0 754512.461 0 5 799636.198 754512.461 5.64% - 4s 0 0 754519.849 0 4 799636.198 754519.849 5.64% - 4s 0 0 754520.706 0 4 799636.198 754520.706 5.64% - 4s 0 0 754520.706 0 4 799636.198 754520.706 5.64% - 5s 0 0 754520.784 0 4 799636.198 754520.784 5.64% - 6s 0 0 754524.557 0 4 799636.198 754524.557 5.64% - 6s 0 0 754527.714 0 4 799636.198 754527.714 5.64% - 7s 0 0 754528.571 0 4 799636.198 754528.571 5.64% - 7s 0 0 754530.488 0 4 799636.198 754530.488 5.64% - 8s 0 0 754530.488 0 4 799636.198 754530.488 5.64% - 9s 0 2 754546.252 0 4 799636.198 754546.252 5.64% - 10s 21 23 755495.641 20 2 799636.198 754803.683 5.61% 85.0 15s 48 50 755945.360 47 1 799636.198 754803.683 5.61% 46.6 20s H 54 19 756096.75618 754803.683 0.17% 41.7 21s 105 38 755362.012 25 1 756096.756 754821.003 0.17% 39.5 25s H 108 39 756060.44872 754821.003 0.16% 38.8 25s 177 78 755393.683 5 1 756060.449 754995.078 0.14% 35.4 30s 211 81 755497.771 1 1 756060.449 755065.398 0.13% 47.5 35s 287 53 cutoff 8 756060.449 755565.686 0.07% 48.7 40s H 292 12 755674.17564 755592.355 0.01% 49.1 40s Cutting planes: Flow cover: 39 Explored 298 nodes (21004 simplex iterations) in 40.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556741756437e+05, best bound 7.555999634999e+05, gap 0.0098%