Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:28 2012 Optimize a model with 1 rows, 175 columns and 175 nonzeros Model has 155 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 156 rows, 306 columns, 616 nonzeros Variable types: 0 continuous, 306 integer (305 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 0.000000e+00, 189 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 42 36.00000 0.00000 100% - 0s 0 0 0.00000 0 41 36.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 25.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 20.00000 0.00000 100% - 0s 0 0 0.00000 0 31 20.00000 0.00000 100% - 0s 0 0 0.00000 0 23 20.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 2 0.00000 0 23 16.00000 0.00000 100% - 0s H 81 50 13.0000000 0.00000 100% 2.8 0s H 100 61 11.0000000 0.00000 100% 2.7 0s H 136 84 9.0000000 0.00000 100% 3.1 0s H 326 135 7.0000000 0.00000 100% 6.3 0s H 380 118 6.0000000 0.00000 100% 7.9 0s H 488 149 5.0000000 0.00000 100% 8.9 0s H 515 109 4.0000000 0.00000 100% 9.4 0s * 557 28 8 3.0000000 1.47619 50.8% 17.5 0s Cutting planes: Cover: 273 MIR: 1 Explored 586 nodes (10855 simplex iterations) in 0.23 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%