Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:23:55 2012 Optimize a model with 1 rows, 140 columns and 140 nonzeros Model has 118 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 119 rows, 232 columns, 468 nonzeros Variable types: 0 continuous, 232 integer (231 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 151 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 32 29.00000 0.00000 100% - 0s 0 0 0.00000 0 29 29.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 24.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 14.00000 0.00000 100% - 0s 0 0 0.00000 0 11 14.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 8.00000 0.00000 100% - 0s 0 0 0.00000 0 13 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 13 7.00000 0.00000 100% - 0s H 313 162 6.0000000 0.00000 100% 7.1 0s H 314 132 5.0000000 0.00000 100% 7.2 0s * 333 103 15 4.0000000 0.00000 100% 7.8 0s * 393 73 10 3.0000000 0.71429 76.2% 9.6 0s Cutting planes: Cover: 206 Explored 469 nodes (8354 simplex iterations) in 0.16 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%