Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:30 2012 Optimize a model with 1 rows, 170 columns and 170 nonzeros Model has 147 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 148 rows, 292 columns, 586 nonzeros Variable types: 0 continuous, 292 integer (291 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 183 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 41 41.00000 0.00000 100% - 0s 0 0 0.00000 0 33 41.00000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 39.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 15.00000 0.00000 100% - 0s 0 0 0.00000 0 21 15.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 13.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 11.00000 0.00000 100% - 0s 0 0 0.00000 0 18 11.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 18 9.00000 0.00000 100% - 0s H 162 111 8.0000000 0.00000 100% 4.3 0s H 189 99 7.0000000 0.00000 100% 4.2 0s H 401 198 6.0000000 0.00000 100% 6.0 0s H 403 169 5.0000000 0.00000 100% 6.1 0s H 438 149 4.0000000 0.00000 100% 7.4 0s H 440 97 3.0000000 0.00000 100% 7.4 0s Cutting planes: Cover: 255 MIR: 1 Explored 607 nodes (12773 simplex iterations) in 0.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%