Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:52:17 2013 Optimize a model with 3300 rows, 30150 columns and 67750 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.22s Presolved: 3250 rows, 30100 columns, 65200 nonzeros Variable types: 27600 continuous, 2500 integer (2500 binary) Root relaxation: objective 1.959342e+05, 2850 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 6 - 195934.242 - - 0s 0 0 196112.738 0 4 - 196112.738 - - 0s 0 0 196117.273 0 4 - 196117.273 - - 0s 0 0 196117.273 0 4 - 196117.273 - - 0s 0 0 196117.273 0 4 - 196117.273 - - 1s H 0 0 200762.51014 196117.273 2.31% - 1s 0 2 196117.273 0 4 200762.510 196117.273 2.31% - 1s * 24 8 12 196570.65000 196375.390 0.10% 139 2s Cutting planes: Gomory: 2 Implied bound: 38 Flow cover: 4 Explored 54 nodes (7076 simplex iterations) in 2.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965706500001e+05, best bound 1.965539387566e+05, gap 0.0085%