Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:46:20 2013 Optimize a model with 1050 rows, 25650 columns and 52000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.14s Presolved: 950 rows, 25550 columns, 51650 nonzeros Variable types: 25350 continuous, 200 integer (200 binary) Root relaxation: objective 1.824192e+05, 2024 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 187432.59106 182419.206 2.67% - 0s 0 0 182445.503 0 2 187432.591 182445.503 2.66% - 0s 0 0 182458.371 0 2 187432.591 182458.371 2.65% - 0s 0 0 182475.253 0 2 187432.591 182475.253 2.64% - 0s 0 0 182483.920 0 2 187432.591 182483.920 2.64% - 0s 0 0 182487.829 0 2 187432.591 182487.829 2.64% - 0s 0 0 182488.914 0 2 187432.591 182488.914 2.64% - 0s 0 0 182491.471 0 2 187432.591 182491.471 2.64% - 0s 0 0 182495.546 0 2 187432.591 182495.546 2.63% - 0s 0 0 182497.031 0 2 187432.591 182497.031 2.63% - 0s 0 0 182497.031 0 2 187432.591 182497.031 2.63% - 0s 0 2 182499.387 0 2 187432.591 182499.387 2.63% - 1s * 15 8 12 183164.27598 182701.496 0.25% 33.6 1s * 20 3 5 182872.35598 182866.028 0.00% 34.6 1s Cutting planes: Flow cover: 13 Explored 21 nodes (3054 simplex iterations) in 1.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828723559779e+05, best bound 1.828660278113e+05, gap 0.0035%