Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:45 2012 Optimize a model with 2570 rows, 101 columns and 5140 nonzeros Presolve removed 1806 rows and 0 columns Presolve time: 0.09s Presolved: 764 rows, 101 columns, 5248 nonzeros Variable types: 0 continuous, 101 integer (101 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.422363e+01, 364 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.22363 0 95 6.00000 14.22363 137% - 0s H 0 0 8.0000000 14.22363 77.8% - 0s 0 0 13.76814 0 100 8.00000 13.76814 72.1% - 0s 0 0 13.69090 0 99 8.00000 13.69090 71.1% - 0s H 0 0 10.0000000 13.69090 36.9% - 0s 0 0 13.66622 0 100 10.00000 13.66622 36.7% - 0s 0 0 13.65166 0 100 10.00000 13.65166 36.5% - 0s 0 0 13.64147 0 100 10.00000 13.64147 36.4% - 0s 0 0 13.63792 0 100 10.00000 13.63792 36.4% - 0s 0 0 13.63786 0 100 10.00000 13.63786 36.4% - 0s 0 2 13.63705 0 100 10.00000 13.63705 36.4% - 1s Cutting planes: Clique: 75 Explored 58 nodes (5239 simplex iterations) in 1.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%