Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:27 2012 Optimize a model with 1 rows, 146 columns and 146 nonzeros Model has 109 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 110 rows, 230 columns, 448 nonzeros Variable types: 0 continuous, 230 integer (229 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 149 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 23 30.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 21.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 13.00000 0.00000 100% - 0s 0 0 0.00000 0 15 13.00000 0.00000 100% - 0s 0 0 0.00000 0 12 13.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 10 8.00000 0.00000 100% - 0s H 8 8 7.0000000 0.00000 100% 3.2 0s H 10 10 6.0000000 0.00000 100% 2.9 0s H 81 40 5.0000000 0.00000 100% 2.2 0s H 117 55 4.0000000 0.00000 100% 2.7 0s H 136 42 3.0000000 0.00000 100% 2.5 0s * 238 45 20 2.0000000 0.00000 100% 3.0 0s * 266 10 19 1.0000000 0.00000 100% 3.3 0s Cutting planes: Cover: 81 MIR: 1 Explored 267 nodes (1163 simplex iterations) in 0.04 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%