Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:56 2012 Optimize a model with 1 rows, 157 columns and 157 nonzeros Model has 130 quadratic objective terms Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 131 rows, 267 columns, 527 nonzeros Variable types: 0 continuous, 267 integer (266 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 0.000000e+00, 172 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 38 35.00000 0.00000 100% - 0s 0 0 0.00000 0 23 35.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 34 17.00000 0.00000 100% - 0s 0 0 0.00000 0 17 17.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 2 0.00000 0 12 12.00000 0.00000 100% - 0s H 54 40 11.0000000 0.00000 100% 2.6 0s H 81 51 8.0000000 0.00000 100% 2.4 0s H 101 58 6.0000000 0.00000 100% 2.5 0s H 235 76 4.0000000 0.00000 100% 3.3 0s H 605 143 3.0000000 0.00000 100% 10.1 0s Cutting planes: Gomory: 1 Cover: 237 Explored 771 nodes (16228 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%