Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:59 2012 Optimize a model with 1 rows, 171 columns and 171 nonzeros Model has 149 quadratic objective terms Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 150 rows, 298 columns, 596 nonzeros Variable types: 0 continuous, 298 integer (297 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 187 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 37 40.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 33.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 37 21.00000 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 H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 12.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 11.00000 0.00000 100% - 0s 0 0 0.00000 0 15 11.00000 0.00000 100% - 0s 0 2 0.00000 0 15 11.00000 0.00000 100% - 0s H 54 44 9.0000000 0.00000 100% 1.8 0s H 189 91 7.0000000 0.00000 100% 2.8 0s H 474 149 4.0000000 0.00000 100% 6.1 0s Cutting planes: Cover: 261 MIR: 2 Zero half: 2 Explored 740 nodes (18521 simplex iterations) in 0.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%