Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:57:05 2013 Optimize a model with 726 rows, 43626 columns and 87186 nonzeros Presolve time: 0.06s Presolved: 726 rows, 43626 columns, 87186 nonzeros Variable types: 43560 continuous, 66 integer (66 binary) Root relaxation: objective 6.751611e+04, 1463 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 67516.1116 0 10 - 67516.1116 - - 0s H 0 0 73910.000000 67516.1116 8.65% - 0s 0 0 67864.4353 0 6 73910.0000 67864.4353 8.18% - 0s H 0 0 72807.518947 67864.4353 6.79% - 0s H 0 0 70247.000000 67864.4353 3.39% - 0s 0 0 67904.8149 0 7 70247.0000 67904.8149 3.33% - 0s 0 0 67944.4151 0 6 70247.0000 67944.4151 3.28% - 0s H 0 0 70140.000000 67944.4151 3.13% - 0s 0 0 67956.0304 0 6 70140.0000 67956.0304 3.11% - 0s H 0 0 68825.000000 67956.0304 1.26% - 0s 0 0 67964.8156 0 6 68825.0000 67964.8156 1.25% - 0s H 0 0 68715.000000 67964.8156 1.09% - 0s 0 0 67965.7932 0 5 68715.0000 67965.7932 1.09% - 0s H 0 0 68063.000000 67965.7932 0.14% - 0s 0 0 67966.8723 0 5 68063.0000 67966.8723 0.14% - 0s 0 0 67966.8723 0 10 68063.0000 67966.8723 0.14% - 1s 0 0 67966.8723 0 7 68063.0000 67966.8723 0.14% - 1s 0 0 67966.8723 0 8 68063.0000 67966.8723 0.14% - 1s 0 0 67966.8723 0 5 68063.0000 67966.8723 0.14% - 1s 0 0 67966.8723 0 6 68063.0000 67966.8723 0.14% - 1s 0 0 67967.5971 0 5 68063.0000 67967.5971 0.14% - 1s 0 0 67967.9287 0 6 68063.0000 67967.9287 0.14% - 1s 0 0 67968.3981 0 5 68063.0000 67968.3981 0.14% - 1s 0 0 67968.8209 0 6 68063.0000 67968.8209 0.14% - 1s 0 0 68055.2543 0 3 68063.0000 68055.2543 0.01% - 1s 0 0 cutoff 0 68063.0000 68063.0000 0.0% - 1s Cutting planes: Implied bound: 79 Flow cover: 1 Explored 0 nodes (3804 simplex iterations) in 1.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.806300000000e+04, best bound 6.806300000000e+04, gap 0.0%