Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:14:26 2012 Optimize a model with 4342 rows, 702 columns and 13624 nonzeros Presolve time: 0.05s Presolved: 4342 rows, 702 columns, 22306 nonzeros Variable types: 0 continuous, 702 integer (702 binary) Found heuristic solution: objective 11.0000000 Root relaxation: objective 2.000000e+00, 1284 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 52 11.00000 2.00000 81.8% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 52 8.00000 2.00000 75.0% - 0s H 0 0 7.0000000 2.00000 71.4% - 0s 0 0 2.00000 0 52 7.00000 2.00000 71.4% - 0s 0 0 2.50000 0 82 7.00000 2.50000 64.3% - 0s 0 0 5.00000 0 120 7.00000 5.00000 28.6% - 0s 0 0 5.00000 0 125 7.00000 5.00000 28.6% - 0s 0 0 5.00000 0 64 7.00000 5.00000 28.6% - 2s 0 0 5.00000 0 61 7.00000 5.00000 28.6% - 2s 0 0 6.00000 0 35 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 91 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 52 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 60 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 18 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 26 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 30 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 22 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 29 7.00000 6.00000 14.3% - 5s 0 0 6.00000 0 29 7.00000 6.00000 14.3% - 5s 0 2 6.00000 0 29 7.00000 6.00000 14.3% - 5s 14 11 6.00000 1 42 7.00000 6.00000 14.3% 34.1 10s 194 23 6.00000 25 51 7.00000 6.00000 14.3% 254 15s 474 13 infeasible 27 7.00000 6.00000 14.3% 200 20s Cutting planes: Gomory: 7 Clique: 15 Zero half: 28 Explored 723 nodes (161428 simplex iterations) in 24.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%