Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:29:19 2013 Optimize a model with 1500 rows, 51100 columns and 270850 nonzeros Presolve removed 50 rows and 5650 columns Presolve time: 0.40s Presolved: 1450 rows, 45450 columns, 250850 nonzeros Variable types: 45050 continuous, 400 integer (400 binary) Root relaxation: objective 1.626233e+05, 2703 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 25 - 162623.326 - - 0s 0 0 162634.953 0 25 - 162634.953 - - 0s 0 0 162636.104 0 25 - 162636.104 - - 1s 0 0 162636.859 0 25 - 162636.859 - - 1s 0 0 162636.859 0 25 - 162636.859 - - 1s 0 0 162636.859 0 25 - 162636.859 - - 1s 0 0 162636.859 0 25 - 162636.859 - - 1s 0 0 162637.001 0 25 - 162637.001 - - 1s 0 0 162637.194 0 25 - 162637.194 - - 1s 0 0 162637.194 0 25 - 162637.194 - - 2s 0 0 162637.324 0 25 - 162637.324 - - 2s 0 0 162637.466 0 25 - 162637.466 - - 2s 0 0 162637.497 0 25 - 162637.497 - - 2s 0 0 162637.732 0 25 - 162637.732 - - 2s 0 0 162637.732 0 25 - 162637.732 - - 2s 0 0 162637.732 0 25 - 162637.732 - - 3s 0 0 162637.732 0 25 - 162637.732 - - 3s 0 0 162637.732 0 25 - 162637.732 - - 3s 0 0 162637.732 0 25 - 162637.732 - - 4s 0 2 162649.025 0 25 - 162649.025 - - 7s * 91 79 71 163654.88340 162666.307 0.60% 16.7 9s * 120 52 23 163526.94384 162673.350 0.52% 18.2 9s 130 55 163113.495 8 5 163526.944 162678.806 0.52% 20.3 10s * 145 65 23 163523.56586 162678.806 0.52% 20.6 10s H 176 31 163104.91406 162711.225 0.24% 19.2 10s * 220 19 28 162922.03026 162711.225 0.13% 18.8 11s * 244 27 23 162920.35108 162717.746 0.12% 17.9 11s * 338 44 25 162920.14757 162863.281 0.03% 15.4 12s Cutting planes: Flow cover: 12 Explored 386 nodes (11434 simplex iterations) in 13.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629201475652e+05, best bound 1.629050440305e+05, gap 0.0093%