Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:52:39 2013 Optimize a model with 3300 rows, 30150 columns and 67750 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.44s Presolved: 3250 rows, 30100 columns, 65200 nonzeros Variable types: 27600 continuous, 2500 integer (2500 binary) Root relaxation: objective 1.824192e+05, 3926 iterations, 0.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 182419.206 0 2 - 182419.206 - - 0s 0 0 182467.126 0 6 - 182467.126 - - 0s 0 0 182476.124 0 6 - 182476.124 - - 1s 0 0 182480.223 0 8 - 182480.223 - - 1s 0 0 182480.441 0 6 - 182480.441 - - 1s 0 0 182480.910 0 6 - 182480.910 - - 1s 0 0 182481.087 0 6 - 182481.087 - - 1s 0 0 182481.418 0 6 - 182481.418 - - 1s 0 0 182481.514 0 6 - 182481.514 - - 1s 0 0 182481.828 0 6 - 182481.828 - - 1s 0 0 182481.831 0 6 - 182481.831 - - 1s 0 0 182481.852 0 6 - 182481.852 - - 1s 0 0 182481.894 0 6 - 182481.894 - - 2s 0 0 182481.920 0 6 - 182481.920 - - 2s 0 0 182481.920 0 6 - 182481.920 - - 2s 0 2 182481.920 0 6 - 182481.920 - - 3s * 37 5 19 182879.22514 182878.951 0.00% 100 4s Cutting planes: Gomory: 1 Implied bound: 26 Flow cover: 1 Explored 38 nodes (8883 simplex iterations) in 4.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828792251419e+05, best bound 1.828789513959e+05, gap 0.0001%