Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:33:12 2012 Optimize a model with 9394 rows, 15006 columns and 42700 nonzeros Presolve removed 34 rows and 4148 columns Presolve time: 0.16s Presolved: 9360 rows, 10858 columns, 38552 nonzeros Variable types: 0 continuous, 10858 integer (10858 binary) Found heuristic solution: objective 40.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 11328 iterations, 0.90 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 96 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 209 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 279 3.00000 2.00000 33.3% - 9s 0 0 2.00000 0 234 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 190 3.00000 2.00000 33.3% - 19s 0 0 2.00000 0 182 3.00000 2.00000 33.3% - 24s 0 0 2.00000 0 186 3.00000 2.00000 33.3% - 29s 0 0 2.00000 0 184 3.00000 2.00000 33.3% - 33s 0 0 2.00000 0 227 3.00000 2.00000 33.3% - 38s 0 0 2.00000 0 96 3.00000 2.00000 33.3% - 46s 0 0 2.00000 0 182 3.00000 2.00000 33.3% - 51s 0 0 2.00000 0 182 3.00000 2.00000 33.3% - 53s 0 2 2.00000 0 182 3.00000 2.00000 33.3% - 58s 4 4 2.00000 1 96 3.00000 2.00000 33.3% 4051 62s 5 5 2.00000 1 192 3.00000 2.00000 33.3% 3241 68s 6 6 2.00000 1 96 3.00000 2.00000 33.3% 2701 72s 7 6 2.00000 1 100 3.00000 2.00000 33.3% 2315 82s 10 8 infeasible 11 3.00000 2.00000 33.3% 14285 85s Cutting planes: Gomory: 4 Zero half: 2 Explored 12 nodes (395843 simplex iterations) in 85.72 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%