Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:20:29 2012 Optimize a model with 215 rows, 172 columns and 707 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 215 rows, 171 columns, 706 nonzeros Variable types: 0 continuous, 171 integer (170 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 0.000000e+00, 103 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 63 43.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.70295 0 64 34.00000 0.70295 97.9% - 0s H 0 0 33.0000000 0.70295 97.9% - 0s 0 0 1.00000 0 65 33.00000 1.00000 97.0% - 0s H 0 0 29.0000000 1.00000 96.6% - 0s 0 0 1.15789 0 66 29.00000 1.15789 96.0% - 0s H 0 0 27.0000000 1.15789 95.7% - 0s 0 0 1.26540 0 66 27.00000 1.26540 95.3% - 0s 0 0 1.26703 0 67 27.00000 1.26703 95.3% - 0s 0 0 1.26703 0 67 27.00000 1.26703 95.3% - 0s 0 2 1.27743 0 67 27.00000 1.27743 95.3% - 0s * 21 17 14 16.0000000 3.59534 77.5% 29.8 0s * 110 36 9 15.0000000 8.34476 44.4% 23.9 0s * 257 25 11 14.0000000 10.20419 27.1% 17.8 0s * 268 20 8 13.0000000 10.29597 20.8% 17.6 0s Cutting planes: Gomory: 3 Zero half: 5 Explored 291 nodes (5528 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%