Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:49:30 2012 Optimize a model with 2635 rows, 103 columns and 5270 nonzeros Presolve removed 1846 rows and 0 columns Presolve time: 0.08s Presolved: 789 rows, 103 columns, 5277 nonzeros Variable types: 0 continuous, 103 integer (103 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.428521e+01, 471 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.28521 0 102 7.00000 14.28521 104% - 0s H 0 0 8.0000000 14.28521 78.6% - 0s 0 0 14.08476 0 102 8.00000 14.08476 76.1% - 0s H 0 0 9.0000000 14.08476 56.5% - 0s 0 0 13.99121 0 103 9.00000 13.99121 55.5% - 0s 0 0 13.94102 0 102 9.00000 13.94102 54.9% - 0s 0 0 13.89167 0 102 9.00000 13.89167 54.4% - 0s 0 0 13.87470 0 103 9.00000 13.87470 54.2% - 0s 0 0 13.87148 0 103 9.00000 13.87148 54.1% - 0s 0 0 13.85360 0 103 9.00000 13.85360 53.9% - 0s 0 0 13.85316 0 103 9.00000 13.85316 53.9% - 0s 0 0 13.85306 0 103 9.00000 13.85306 53.9% - 1s 0 0 13.85301 0 103 9.00000 13.85301 53.9% - 1s 0 2 13.85295 0 103 9.00000 13.85295 53.9% - 1s Cutting planes: Clique: 45 Zero half: 3 Explored 206 nodes (13251 simplex iterations) in 2.09 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%