Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:50:13 2012 Optimize a model with 1 rows, 47 columns and 47 nonzeros Model has 93 quadratic objective terms Presolve time: 0.00s Presolved: 94 rows, 140 columns, 326 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 50.0000000 Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 113 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 45 34.00000 0.00000 100% - 0s 0 0 0.00000 0 63 34.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 32.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 24.00000 0.00000 100% - 0s 0 0 0.00000 0 35 24.00000 0.00000 100% - 0s 0 0 0.00000 0 27 24.00000 0.00000 100% - 0s 0 0 0.00000 0 30 24.00000 0.00000 100% - 0s 0 0 0.00000 0 27 24.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 2 0.00000 0 27 22.00000 0.00000 100% - 0s H 210 153 20.0000000 0.00000 100% 7.4 0s H 361 171 19.0000000 3.00000 84.2% 11.5 0s * 696 124 8 18.0000000 9.00000 50.0% 17.6 0s Cutting planes: Cover: 176 MIR: 10 Zero half: 7 Explored 995 nodes (17794 simplex iterations) in 0.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%