Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:44:34 2012 Optimize a model with 1 rows, 177 columns and 177 nonzeros Model has 149 quadratic objective terms Presolve removed 0 rows and 33 columns Presolve time: 0.00s Presolved: 150 rows, 293 columns, 591 nonzeros Variable types: 0 continuous, 293 integer (292 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 0.000000e+00, 185 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 50 42.00000 0.00000 100% - 0s 0 0 0.00000 0 31 42.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 26.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 34 16.00000 0.00000 100% - 0s 0 0 0.00000 0 27 16.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 2 0.00000 0 27 13.00000 0.00000 100% - 0s H 54 45 12.0000000 0.00000 100% 1.5 0s H 81 63 10.0000000 0.00000 100% 1.8 0s H 101 72 9.0000000 0.00000 100% 1.9 0s H 135 72 6.0000000 0.00000 100% 2.7 0s H 514 214 5.0000000 0.00000 100% 9.6 0s * 535 155 16 4.0000000 0.93548 76.6% 10.0 0s Cutting planes: Gomory: 2 Cover: 288 Explored 735 nodes (18385 simplex iterations) in 0.33 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%