Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:43 2012 Optimize a model with 1 rows, 147 columns and 147 nonzeros Model has 109 quadratic objective terms Presolve removed 0 rows and 32 columns Presolve time: 0.00s Presolved: 110 rows, 224 columns, 442 nonzeros Variable types: 0 continuous, 224 integer (223 binary) Found heuristic solution: objective 25.0000000 Root relaxation: objective 0.000000e+00, 144 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 10 25.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 10.00000 0.00000 100% - 0s 0 0 0.00000 0 18 10.00000 0.00000 100% - 0s 0 0 0.00000 0 13 10.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 7.00000 0.00000 100% - 0s 0 0 0.00000 0 9 7.00000 0.00000 100% - 0s 0 0 0.00000 0 8 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 6.00000 0.00000 100% - 0s 0 0 0.00000 0 11 6.00000 0.00000 100% - 0s 0 2 0.00000 0 11 6.00000 0.00000 100% - 0s H 38 24 5.0000000 0.00000 100% 2.6 0s * 118 51 31 4.0000000 0.00000 100% 2.4 0s H 300 84 3.0000000 0.00000 100% 6.4 0s * 423 36 18 2.0000000 0.00000 100% 12.3 0s * 425 4 7 1.0000000 0.00000 100% 12.4 0s Cutting planes: Cover: 184 Explored 426 nodes (5720 simplex iterations) in 0.13 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%