Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:44:24 2013 Optimize a model with 693 rows, 39753 columns and 79443 nonzeros Presolve time: 0.06s Presolved: 693 rows, 39753 columns, 79443 nonzeros Variable types: 39690 continuous, 63 integer (63 binary) Root relaxation: objective 6.653379e+04, 1460 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66533.7854 0 7 - 66533.7854 - - 0s H 0 0 69436.000000 66533.7854 4.18% - 0s 0 0 66730.6332 0 6 69436.0000 66730.6332 3.90% - 0s 0 0 66861.0428 0 5 69436.0000 66861.0428 3.71% - 0s H 0 0 69122.000000 66861.0428 3.27% - 0s 0 0 66875.8570 0 5 69122.0000 66875.8570 3.25% - 0s H 0 0 69071.000000 66875.8570 3.18% - 0s 0 0 66883.7014 0 4 69071.0000 66883.7014 3.17% - 0s H 0 0 69004.000000 66883.7014 3.07% - 0s 0 0 66884.4778 0 4 69004.0000 66884.4778 3.07% - 0s 0 0 66888.8623 0 5 69004.0000 66888.8623 3.07% - 0s H 0 0 68988.000000 66888.8623 3.04% - 0s 0 0 66889.2475 0 4 68988.0000 66889.2475 3.04% - 0s H 0 0 68981.000000 66889.2475 3.03% - 0s 0 0 66889.2475 0 4 68981.0000 66889.2475 3.03% - 0s 0 0 66889.2475 0 4 68981.0000 66889.2475 3.03% - 0s 0 2 66894.0642 0 4 68981.0000 66894.0642 3.03% - 1s H 2 2 68123.435537 66951.9777 1.72% 22.0 1s H 3 3 67766.736842 66953.8173 1.20% 23.0 1s H 4 4 67299.533333 66953.8173 0.51% 45.0 1s H 12 8 67191.000000 67021.6630 0.25% 29.8 1s H 14 8 67151.000000 67021.6630 0.19% 26.3 1s * 16 8 14 67135.000000 67021.6630 0.17% 23.9 1s * 17 6 12 67123.000000 67021.6630 0.15% 23.2 1s * 22 3 6 67121.000000 67083.4426 0.06% 24.4 1s Cutting planes: Implied bound: 133 Flow cover: 6 Explored 26 nodes (2413 simplex iterations) in 1.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.712100000000e+04, best bound 6.712100000000e+04, gap 0.0%