Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:57:33 2012 Optimize a model with 12474 rows, 16002 columns and 52920 nonzeros Presolve removed 28 rows and 3528 columns Presolve time: 0.22s Presolved: 12446 rows, 12474 columns, 49392 nonzeros Variable types: 0 continuous, 12474 integer (12474 binary) Found heuristic solution: objective 48.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 13430 iterations, 1.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 176 3.00000 2.00000 33.3% - 5s 0 0 2.00000 0 379 3.00000 2.00000 33.3% - 10s 0 0 2.00000 0 287 3.00000 2.00000 33.3% - 19s 0 0 2.00000 0 276 3.00000 2.00000 33.3% - 29s 0 0 2.00000 0 378 3.00000 2.00000 33.3% - 38s 0 0 2.00000 0 289 3.00000 2.00000 33.3% - 48s 0 0 2.00000 0 276 3.00000 2.00000 33.3% - 58s 0 0 2.00000 0 287 3.00000 2.00000 33.3% - 67s 0 0 2.00000 0 176 3.00000 2.00000 33.3% - 75s 0 0 2.00000 0 276 3.00000 2.00000 33.3% - 83s 0 0 2.00000 0 287 3.00000 2.00000 33.3% - 98s 0 0 2.00000 0 287 3.00000 2.00000 33.3% - 102s 0 2 2.00000 0 287 3.00000 2.00000 33.3% - 112s 4 4 2.00000 1 176 3.00000 2.00000 33.3% 4978 120s 5 5 2.00000 1 276 3.00000 2.00000 33.3% 3982 130s 6 6 2.00000 1 176 3.00000 2.00000 33.3% 3318 141s 7 6 2.00000 1 176 3.00000 2.00000 33.3% 2844 150s 8 7 2.00000 1 176 3.00000 2.00000 33.3% 2489 161s 9 8 2.00000 1 176 3.00000 2.00000 33.3% 2212 170s 10 8 2.00000 1 176 3.00000 2.00000 33.3% 1991 186s 13 10 infeasible 11 3.00000 2.00000 33.3% 18190 197s 14 9 infeasible 11 3.00000 3.00000 0.0% 17520 200s Cutting planes: Gomory: 1 Zero half: 3 Explored 15 nodes (548789 simplex iterations) in 200.12 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%