Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:43:46 2012 Optimize a model with 11780 rows, 15500 columns and 50344 nonzeros Presolve removed 28 rows and 3472 columns Presolve time: 0.20s Presolved: 11752 rows, 12028 columns, 46872 nonzeros Variable types: 0 continuous, 12028 integer (12028 binary) Found heuristic solution: objective 45.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 14538 iterations, 1.73 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 160 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 262 3.00000 2.00000 33.3% - 7s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 23s 0 0 2.00000 0 275 3.00000 2.00000 33.3% - 30s 0 0 2.00000 0 260 3.00000 2.00000 33.3% - 40s 0 0 2.00000 0 275 3.00000 2.00000 33.3% - 47s 0 0 2.00000 0 260 3.00000 2.00000 33.3% - 56s 0 0 2.00000 0 275 3.00000 2.00000 33.3% - 67s 0 0 2.00000 0 275 3.00000 2.00000 33.3% - 72s 0 2 2.00000 0 275 3.00000 2.00000 33.3% - 88s 2 3 2.00000 1 275 3.00000 2.00000 33.3% 10746 90s 5 5 2.00000 1 160 3.00000 2.00000 33.3% 4298 104s 6 6 2.00000 1 160 3.00000 2.00000 33.3% 3582 112s 7 6 2.00000 1 160 3.00000 2.00000 33.3% 3070 121s 8 7 2.00000 1 160 3.00000 2.00000 33.3% 2686 131s 9 8 2.00000 1 160 3.00000 2.00000 33.3% 2388 147s 10 8 2.00000 1 160 3.00000 2.00000 33.3% 2149 157s 12 10 infeasible 13 3.00000 2.00000 33.3% 18595 175s Cutting planes: Gomory: 4 Zero half: 7 Explored 14 nodes (458084 simplex iterations) in 176.15 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%