Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:14 2012 Optimize a model with 1 rows, 159 columns and 159 nonzeros Model has 154 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 155 rows, 287 columns, 595 nonzeros Variable types: 0 continuous, 287 integer (286 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 184 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 34.00000 0.00000 100% - 0s 0 0 0.00000 0 37 34.00000 0.00000 100% - 0s 0 0 0.00000 0 24 34.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 22.00000 0.00000 100% - 0s 0 0 0.00000 0 25 22.00000 0.00000 100% - 0s H 0 0 21.0000000 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 54 41 14.0000000 0.00000 100% 2.0 0s H 325 223 12.0000000 0.00000 100% 7.4 0s H 377 228 11.0000000 0.00000 100% 8.2 0s H 433 247 10.0000000 1.00000 90.0% 8.7 0s * 469 217 11 9.0000000 1.00000 88.9% 10.2 0s H 488 195 8.0000000 1.00000 87.5% 11.2 0s Cutting planes: Cover: 290 Explored 819 nodes (26233 simplex iterations) in 0.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%