Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:37:19 2012 Optimize a model with 1 rows, 169 columns and 169 nonzeros Model has 152 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 153 rows, 297 columns, 601 nonzeros Variable types: 0 continuous, 297 integer (296 binary) Found heuristic solution: objective 43.0000000 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 36 43.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 28.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 22.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 21.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 19.00000 0.00000 100% - 0s 0 0 0.00000 0 20 19.00000 0.00000 100% - 0s 0 0 0.00000 0 20 19.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 12.00000 0.00000 100% - 0s H 27 27 11.0000000 0.00000 100% 1.4 0s H 352 228 10.0000000 0.00000 100% 4.8 0s H 469 252 8.0000000 0.00000 100% 6.9 0s H 488 177 6.0000000 0.00000 100% 7.5 0s H 515 143 5.0000000 0.00000 100% 8.5 0s * 524 101 13 4.0000000 0.00000 100% 8.9 0s * 526 55 11 3.0000000 0.00000 100% 8.9 0s Cutting planes: Cover: 266 Explored 585 nodes (10578 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%