Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:03:32 2013 Optimize a model with 495 rows, 20295 columns and 40545 nonzeros Presolve time: 0.03s Presolved: 495 rows, 20295 columns, 40545 nonzeros Variable types: 20250 continuous, 45 integer (45 binary) Root relaxation: objective 4.740836e+04, 931 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47408.3645 0 7 - 47408.3645 - - 0s H 0 0 47912.000000 47408.3645 1.05% - 0s 0 0 47634.8606 0 3 47912.0000 47634.8606 0.58% - 0s H 0 0 47813.051777 47634.8606 0.37% - 0s H 0 0 47757.000000 47634.8606 0.26% - 0s 0 0 47638.1149 0 4 47757.0000 47638.1149 0.25% - 0s H 0 0 47731.000000 47638.1149 0.19% - 0s 0 0 47640.2639 0 3 47731.0000 47640.2639 0.19% - 0s 0 0 47641.5898 0 3 47731.0000 47641.5898 0.19% - 0s 0 0 47642.0950 0 3 47731.0000 47642.0950 0.19% - 0s 0 0 47642.4799 0 3 47731.0000 47642.4799 0.19% - 0s 0 0 47644.1475 0 7 47731.0000 47644.1475 0.18% - 0s 0 0 47644.6153 0 3 47731.0000 47644.6153 0.18% - 0s H 0 0 47730.538868 47644.6153 0.18% - 0s H 0 0 47704.000000 47644.6153 0.12% - 0s 0 0 47644.6153 0 6 47704.0000 47644.6153 0.12% - 0s H 0 0 47670.000000 47644.6153 0.05% - 0s 0 0 47648.6533 0 2 47670.0000 47648.6533 0.04% - 0s 0 0 47648.6533 0 2 47670.0000 47648.6533 0.04% - 0s 0 0 47649.0000 0 1 47670.0000 47649.0000 0.04% - 0s 0 2 47652.0000 0 1 47670.0000 47652.0000 0.04% - 0s * 3 0 2 47663.000000 47663.0000 0.0% 20.3 0s Cutting planes: Implied bound: 20 Explored 4 nodes (2021 simplex iterations) in 0.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.766300000000e+04, best bound 4.766300000000e+04, gap 0.0%