Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:54 2012 Optimize a model with 1 rows, 144 columns and 144 nonzeros Model has 118 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 119 rows, 237 columns, 473 nonzeros Variable types: 0 continuous, 237 integer (236 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 0.000000e+00, 159 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 13 24.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 13.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 11.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 8 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 8 7.00000 0.00000 100% - 0s H 4 4 6.0000000 0.00000 100% 3.5 0s H 20 20 5.0000000 0.00000 100% 1.4 0s H 244 55 4.0000000 0.00000 100% 3.0 0s * 410 76 20 3.0000000 0.00000 100% 4.8 0s * 424 26 17 2.0000000 0.00000 100% 4.9 0s Cutting planes: Cover: 203 Explored 477 nodes (3980 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%