Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:18:37 2012 Optimize a model with 11610 rows, 18360 columns and 52650 nonzeros Presolve removed 33 rows and 4455 columns Presolve time: 0.20s Presolved: 11577 rows, 13905 columns, 48195 nonzeros Variable types: 0 continuous, 13905 integer (13905 binary) Found heuristic solution: objective 35.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 12953 iterations, 0.93 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 102 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 223 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 262 3.00000 2.00000 33.3% - 15s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 24s 0 0 2.00000 0 393 3.00000 2.00000 33.3% - 31s 0 0 2.00000 0 203 3.00000 2.00000 33.3% - 38s 0 0 2.00000 0 310 3.00000 2.00000 33.3% - 44s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 49s 0 2 2.00000 0 258 3.00000 2.00000 33.3% - 57s 4 4 2.00000 1 102 3.00000 2.00000 33.3% 4893 63s 5 5 2.00000 1 311 3.00000 2.00000 33.3% 3914 76s 6 6 2.00000 1 102 3.00000 2.00000 33.3% 3262 80s 7 6 2.00000 1 106 3.00000 2.00000 33.3% 2796 89s 8 7 2.00000 1 209 3.00000 2.00000 33.3% 2446 106s 9 8 2.00000 1 203 3.00000 2.00000 33.3% 2175 114s 10 8 2.00000 1 203 3.00000 2.00000 33.3% 1957 115s 11 9 infeasible 11 3.00000 2.00000 33.3% 19537 122s 12 10 2.00000 11 102 3.00000 2.00000 33.3% 17909 125s Cutting planes: Gomory: 5 Zero half: 1 Explored 15 nodes (411055 simplex iterations) in 128.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%