Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:22:59 2012 Optimize a model with 10613 rows, 3422 columns and 34972 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.26s Presolved: 10611 rows, 3420 columns, 34606 nonzeros Variable types: 0 continuous, 3420 integer (3420 binary) Found heuristic solution: objective 58.0000000 Root relaxation: objective 2.000000e+00, 2431 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 116 58.00000 2.00000 96.6% - 0s H 0 0 46.0000000 2.00000 95.7% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 3.00000 0 688 5.00000 3.00000 40.0% - 2s 0 0 3.00901 0 2339 5.00000 3.00901 39.8% - 2s 0 0 3.00901 0 2298 5.00000 3.00901 39.8% - 3s 0 0 3.00901 0 2296 5.00000 3.00901 39.8% - 4s 0 0 3.00901 0 2298 5.00000 3.00901 39.8% - 5s 0 0 3.00901 0 1862 5.00000 3.00901 39.8% - 10s H 0 0 4.0000000 3.00901 24.8% - 10s Cutting planes: Clique: 17 Zero half: 3 Explored 0 nodes (40776 simplex iterations) in 10.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%