Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:01 2012 Optimize a model with 1 rows, 174 columns and 174 nonzeros Model has 141 quadratic objective terms Presolve removed 0 rows and 34 columns Presolve time: 0.00s Presolved: 142 rows, 281 columns, 563 nonzeros Variable types: 0 continuous, 281 integer (280 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 169 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 33 30.00000 0.00000 100% - 0s 0 0 0.00000 0 32 30.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 25.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 17.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 14.00000 0.00000 100% - 0s 0 0 0.00000 0 13 14.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s H 0 0 8.0000000 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 * 29 29 18 6.0000000 0.00000 100% 1.6 0s H 54 35 5.0000000 0.00000 100% 2.2 0s H 364 152 4.0000000 0.00000 100% 7.3 0s * 391 105 16 3.0000000 0.00000 100% 8.6 0s Cutting planes: Cover: 238 MIR: 5 Zero half: 1 Explored 530 nodes (9733 simplex iterations) in 0.19 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%