Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:18:49 2013 Optimize a model with 900 rows, 25350 columns and 50950 nonzeros Presolve removed 150 rows and 100 columns Presolve time: 0.11s Presolved: 750 rows, 25250 columns, 50550 nonzeros Variable types: 25200 continuous, 50 integer (50 binary) Root relaxation: objective 1.824192e+05, 2015 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 182419.206 0 1 - 182419.206 - - 0s H 0 0 183912.50168 182419.206 0.81% - 0s 0 0 182445.503 0 2 183912.502 182445.503 0.80% - 0s 0 0 182458.434 0 2 183912.502 182458.434 0.79% - 0s 0 0 182470.587 0 2 183912.502 182470.587 0.78% - 0s 0 0 182483.949 0 2 183912.502 182483.949 0.78% - 0s 0 0 182490.685 0 2 183912.502 182490.685 0.77% - 0s 0 0 182496.264 0 3 183912.502 182496.264 0.77% - 0s 0 0 182498.750 0 2 183912.502 182498.750 0.77% - 0s 0 0 182499.387 0 2 183912.502 182499.387 0.77% - 0s 0 0 182501.486 0 2 183912.502 182501.486 0.77% - 0s 0 0 182503.547 0 2 183912.502 182503.547 0.77% - 0s 0 0 182503.547 0 2 183912.502 182503.547 0.77% - 0s 0 0 182503.547 0 2 183912.502 182503.547 0.77% - 1s 0 2 182508.061 0 2 183912.502 182508.061 0.76% - 1s * 6 4 5 183438.52172 182701.496 0.40% 88.3 1s * 11 2 4 182845.28394 182762.013 0.05% 67.5 1s Cutting planes: Flow cover: 16 Explored 14 nodes (3139 simplex iterations) in 1.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828452839414e+05, best bound 1.828452839414e+05, gap 0.0%