Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:44:50 2013 Optimize a model with 950 rows, 25850 columns and 52050 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.14s Presolved: 850 rows, 25700 columns, 51400 nonzeros Variable types: 25500 continuous, 200 integer (200 binary) Root relaxation: objective 1.824192e+05, 2508 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 182459.949 0 2 187432.591 182459.949 2.65% - 0s 0 0 182475.587 0 2 187432.591 182475.587 2.64% - 0s 0 0 182484.202 0 2 187432.591 182484.202 2.64% - 0s 0 0 182490.285 0 2 187432.591 182490.285 2.64% - 0s 0 0 182493.393 0 3 187432.591 182493.393 2.64% - 0s 0 0 182497.104 0 2 187432.591 182497.104 2.63% - 0s 0 0 182497.481 0 2 187432.591 182497.481 2.63% - 0s 0 0 182498.523 0 2 187432.591 182498.523 2.63% - 0s 0 0 182498.523 0 2 187432.591 182498.523 2.63% - 0s 0 2 182499.387 0 2 187432.591 182499.387 2.63% - 0s H 27 11 183463.67126 182700.785 0.42% 18.3 1s H 54 1 182872.35598 182853.880 0.01% 17.9 1s Cutting planes: Flow cover: 12 Explored 55 nodes (3681 simplex iterations) in 1.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828723559779e+05, best bound 1.828721966131e+05, gap 0.0001%