Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:25 2012 Optimize a model with 1 rows, 162 columns and 162 nonzeros Model has 157 quadratic objective terms Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 158 rows, 298 columns, 612 nonzeros Variable types: 0 continuous, 298 integer (297 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 0.000000e+00, 195 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 43 48.00000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 38.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 32.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 36 21.00000 0.00000 100% - 0s 0 0 0.00000 0 25 21.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 20.00000 0.00000 100% - 0s 0 0 0.00000 0 28 20.00000 0.00000 100% - 0s 0 0 0.00000 0 28 20.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 2 0.00000 0 28 13.00000 0.00000 100% - 0s H 145 99 11.0000000 0.00000 100% 3.1 0s H 303 200 10.0000000 0.00000 100% 7.4 0s H 461 203 7.0000000 0.00000 100% 10.0 0s * 553 148 8 6.0000000 1.00000 83.3% 17.3 0s Cutting planes: Gomory: 1 Cover: 302 MIR: 4 Explored 760 nodes (24645 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%