Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:01 2012 Optimize a model with 1 rows, 174 columns and 174 nonzeros Model has 153 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 154 rows, 299 columns, 605 nonzeros Variable types: 0 continuous, 299 integer (298 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 0.000000e+00, 188 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 29 46.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 26.00000 0.00000 100% - 0s 0 0 0.00000 0 22 26.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 16.00000 0.00000 100% - 0s 0 0 0.00000 0 21 16.00000 0.00000 100% - 0s 0 0 0.00000 0 14 16.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 11.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 9.00000 0.00000 100% - 0s 0 0 0.00000 0 18 9.00000 0.00000 100% - 0s 0 0 0.00000 0 18 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 8.00000 0.00000 100% - 0s H 81 49 7.0000000 0.00000 100% 2.8 0s H 326 139 5.0000000 0.00000 100% 7.8 0s * 455 108 15 4.0000000 1.00000 75.0% 13.2 0s Cutting planes: Cover: 266 MIR: 2 Explored 568 nodes (13396 simplex iterations) in 0.28 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%