Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:12 2012 Optimize a model with 1 rows, 152 columns and 152 nonzeros Model has 117 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 118 rows, 241 columns, 475 nonzeros Variable types: 0 continuous, 241 integer (240 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 145 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 33.00000 0.00000 100% - 0s 0 0 0.00000 0 24 33.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 27.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 11.00000 0.00000 100% - 0s 0 0 0.00000 0 18 11.00000 0.00000 100% - 0s 0 0 0.00000 0 20 11.00000 0.00000 100% - 0s 0 0 0.00000 0 11 11.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 11 9.00000 0.00000 100% - 0s H 27 27 8.0000000 0.00000 100% 1.9 0s H 54 34 7.0000000 0.00000 100% 2.3 0s H 247 135 6.0000000 0.00000 100% 5.9 0s * 255 119 18 5.0000000 0.00000 100% 5.9 0s * 276 89 22 4.0000000 0.00000 100% 5.8 0s * 286 58 14 3.0000000 0.00000 100% 6.3 0s H 304 14 1.0000000 0.00000 100% 6.3 0s Cutting planes: Cover: 146 Explored 305 nodes (2326 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%