Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:53:43 2012 Optimize a model with 3239 rows, 113 columns and 6478 nonzeros Presolve removed 2369 rows and 0 columns Presolve time: 0.11s Presolved: 870 rows, 113 columns, 6221 nonzeros Variable types: 0 continuous, 113 integer (113 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.525044e+01, 412 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.25044 0 110 8.00000 15.25044 90.6% - 0s 0 0 14.90945 0 113 8.00000 14.90945 86.4% - 0s 0 0 14.75340 0 113 8.00000 14.75340 84.4% - 0s H 0 0 9.0000000 14.75340 63.9% - 0s 0 0 14.73554 0 113 9.00000 14.73554 63.7% - 0s 0 0 14.68550 0 113 9.00000 14.68550 63.2% - 0s 0 0 14.66655 0 113 9.00000 14.66655 63.0% - 0s 0 0 14.66630 0 113 9.00000 14.66630 63.0% - 1s 0 0 14.66614 0 113 9.00000 14.66614 63.0% - 1s 0 0 14.66400 0 113 9.00000 14.66400 62.9% - 1s 0 0 14.66278 0 113 9.00000 14.66278 62.9% - 1s 0 2 14.66040 0 113 9.00000 14.66040 62.9% - 1s Cutting planes: Clique: 80 Zero half: 1 Explored 310 nodes (20334 simplex iterations) in 3.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%