Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:02:07 2013 Optimize a model with 2100 rows, 101300 columns and 204000 nonzeros Presolve removed 200 rows and 200 columns Presolve time: 0.46s Presolved: 1900 rows, 101100 columns, 203300 nonzeros Variable types: 100700 continuous, 400 integer (400 binary) Root relaxation: objective 8.654105e+05, 7740 iterations, 0.72 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 865410.545 0 2 - 865410.545 - - 1s H 0 0 898678.98797 865410.545 3.70% - 1s 0 0 865463.744 0 2 898678.988 865463.744 3.70% - 1s 0 0 865496.206 0 2 898678.988 865496.206 3.69% - 2s 0 0 865513.212 0 2 898678.988 865513.212 3.69% - 2s 0 0 865525.793 0 2 898678.988 865525.793 3.69% - 2s 0 0 865525.983 0 2 898678.988 865525.983 3.69% - 2s 0 0 865526.903 0 1 898678.988 865526.903 3.69% - 3s 0 0 865529.671 0 1 898678.988 865529.671 3.69% - 3s 0 0 865533.011 0 1 898678.988 865533.011 3.69% - 3s 0 0 865533.011 0 1 898678.988 865533.011 3.69% - 4s 0 0 865534.044 0 1 898678.988 865534.044 3.69% - 4s 0 0 865535.431 0 1 898678.988 865535.431 3.69% - 4s 0 0 865535.431 0 1 898678.988 865535.431 3.69% - 5s 0 2 865554.840 0 1 898678.988 865554.840 3.69% - 5s 22 24 867385.587 20 2 898678.988 866564.739 3.57% 150 10s * 50 19 47 868077.72120 866564.739 0.17% 89.3 13s H 81 24 866990.89656 866619.058 0.04% 66.3 14s 103 46 866827.821 49 1 866990.897 866619.058 0.04% 52.8 15s * 133 49 79 866930.82542 866619.058 0.04% 41.6 15s H 144 38 866899.19924 866686.099 0.02% 42.4 16s * 181 11 29 866870.27622 866811.478 0.01% 36.0 17s Cutting planes: Flow cover: 16 Explored 182 nodes (15687 simplex iterations) in 17.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.668702762242e+05, best bound 8.668114784673e+05, gap 0.0068%