Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:09:08 2013 Optimize a model with 539 rows, 24059 columns and 48069 nonzeros Presolve time: 0.03s Presolved: 539 rows, 24059 columns, 48069 nonzeros Variable types: 24010 continuous, 49 integer (49 binary) Root relaxation: objective 4.795325e+04, 789 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47953.2532 0 5 - 47953.2532 - - 0s H 0 0 49205.000000 47953.2532 2.54% - 0s H 0 0 48658.000000 47953.2532 1.45% - 0s 0 0 48138.5550 0 3 48658.0000 48138.5550 1.07% - 0s 0 0 48164.5354 0 2 48658.0000 48164.5354 1.01% - 0s 0 0 48165.9050 0 3 48658.0000 48165.9050 1.01% - 0s 0 0 48166.1667 0 2 48658.0000 48166.1667 1.01% - 0s 0 0 48166.1667 0 2 48658.0000 48166.1667 1.01% - 0s 0 0 48166.1667 0 2 48658.0000 48166.1667 1.01% - 0s 0 0 48166.1667 0 2 48658.0000 48166.1667 1.01% - 0s H 0 0 48367.000000 48166.1667 0.42% - 0s 0 0 48185.6039 0 4 48367.0000 48185.6039 0.38% - 0s 0 0 48316.6448 0 3 48367.0000 48316.6448 0.10% - 0s 0 0 48336.8706 0 3 48367.0000 48336.8706 0.06% - 0s 0 0 48338.4000 0 3 48367.0000 48338.4000 0.06% - 0s 0 0 48338.4000 0 3 48367.0000 48338.4000 0.06% - 0s 0 0 48338.4386 0 4 48367.0000 48338.4386 0.06% - 0s 0 0 48340.3200 0 3 48367.0000 48340.3200 0.06% - 0s 0 0 48340.3200 0 3 48367.0000 48340.3200 0.06% - 0s 0 0 48340.3200 0 3 48367.0000 48340.3200 0.06% - 0s 0 0 48340.3200 0 3 48367.0000 48340.3200 0.06% - 0s 0 0 48354.4500 0 1 48367.0000 48354.4500 0.03% - 0s 0 2 48355.0000 0 1 48367.0000 48355.0000 0.02% - 0s Cutting planes: Implied bound: 31 Flow cover: 3 Explored 3 nodes (1697 simplex iterations) in 0.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.836700000000e+04, best bound 4.836700000000e+04, gap 0.0%