Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:36 2012 Optimize a model with 1 rows, 156 columns and 156 nonzeros Model has 128 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 129 rows, 258 columns, 514 nonzeros Variable types: 0 continuous, 258 integer (257 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 161 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 30 33.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 29.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 26.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 22.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 12.00000 0.00000 100% - 0s 0 0 0.00000 0 17 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 10.00000 0.00000 100% - 0s H 53 44 9.0000000 0.00000 100% 1.5 0s H 81 54 8.0000000 0.00000 100% 1.9 0s * 96 59 21 7.0000000 0.00000 100% 1.8 0s H 108 49 5.0000000 0.00000 100% 1.9 0s * 121 39 20 4.0000000 0.00000 100% 1.9 0s * 295 40 16 2.0000000 0.00000 100% 6.2 0s Cutting planes: Cover: 217 MIR: 1 Zero half: 1 Explored 390 nodes (4759 simplex iterations) in 0.10 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%