Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:32 2012 Optimize a model with 1 rows, 170 columns and 170 nonzeros Model has 148 quadratic objective terms Presolve removed 0 rows and 29 columns Presolve time: 0.00s Presolved: 149 rows, 289 columns, 585 nonzeros Variable types: 0 continuous, 289 integer (288 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 0.000000e+00, 182 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 35 43.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 30.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 19.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 13.00000 0.00000 100% - 0s 0 0 0.00000 0 21 13.00000 0.00000 100% - 0s 0 0 0.00000 0 19 13.00000 0.00000 100% - 0s 0 0 0.00000 0 14 13.00000 0.00000 100% - 0s 0 0 0.00000 0 15 13.00000 0.00000 100% - 0s 0 0 0.00000 0 15 13.00000 0.00000 100% - 0s 0 2 0.00000 0 15 13.00000 0.00000 100% - 0s H 29 29 9.0000000 0.00000 100% 1.2 0s H 135 76 8.0000000 0.00000 100% 2.9 0s H 396 203 7.0000000 0.00000 100% 6.5 0s H 397 132 5.0000000 0.00000 100% 6.5 0s * 490 74 8 3.0000000 1.00000 66.7% 9.4 0s Cutting planes: Cover: 250 MIR: 1 Explored 569 nodes (10681 simplex iterations) in 0.22 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%