Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:39 2012 Optimize a model with 1 rows, 143 columns and 143 nonzeros Model has 109 quadratic objective terms Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 110 rows, 225 columns, 443 nonzeros Variable types: 0 continuous, 225 integer (224 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 133 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 31 28.00000 0.00000 100% - 0s 0 0 0.00000 0 17 28.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 15.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 6.00000 0.00000 100% - 0s 0 0 0.00000 0 13 6.00000 0.00000 100% - 0s 0 0 0.00000 0 14 6.00000 0.00000 100% - 0s 0 0 0.00000 0 12 6.00000 0.00000 100% - 0s 0 0 0.00000 0 14 6.00000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 0 0.00000 0 5 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 5.00000 0.00000 100% - 0s 0 0 0.00000 0 7 5.00000 0.00000 100% - 0s 0 2 0.00000 0 7 5.00000 0.00000 100% - 0s * 107 36 16 4.0000000 0.00000 100% 2.4 0s * 327 68 19 3.0000000 0.00000 100% 5.8 0s H 374 35 2.0000000 0.00000 100% 6.9 0s Cutting planes: Cover: 177 MIR: 7 Zero half: 2 Explored 415 nodes (4625 simplex iterations) in 0.11 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%