Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:24 2012 Optimize a model with 2110 rows, 92 columns and 4220 nonzeros Presolve removed 1487 rows and 0 columns Presolve time: 0.06s Presolved: 623 rows, 92 columns, 4108 nonzeros Variable types: 0 continuous, 92 integer (92 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.331319e+01, 376 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.31319 0 89 7.00000 13.31319 90.2% - 0s 0 0 13.06703 0 91 7.00000 13.06703 86.7% - 0s 0 0 12.99361 0 91 7.00000 12.99361 85.6% - 0s H 0 0 8.0000000 12.99361 62.4% - 0s 0 0 12.94983 0 91 8.00000 12.94983 61.9% - 0s H 0 0 9.0000000 12.94983 43.9% - 0s 0 0 12.89691 0 90 9.00000 12.89691 43.3% - 0s 0 0 12.88948 0 91 9.00000 12.88948 43.2% - 0s 0 0 12.87114 0 91 9.00000 12.87114 43.0% - 0s 0 0 12.86740 0 92 9.00000 12.86740 43.0% - 0s 0 0 12.86578 0 92 9.00000 12.86578 43.0% - 0s 0 0 12.86559 0 92 9.00000 12.86559 43.0% - 0s 0 0 12.86558 0 92 9.00000 12.86558 43.0% - 1s 0 2 12.86275 0 92 9.00000 12.86275 42.9% - 1s Cutting planes: Clique: 64 Zero half: 3 Explored 90 nodes (6625 simplex iterations) in 1.39 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%