Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:29 2012 Optimize a model with 1 rows, 175 columns and 175 nonzeros Model has 170 quadratic objective terms Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 171 rows, 324 columns, 664 nonzeros Variable types: 0 continuous, 324 integer (323 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 0.000000e+00, 212 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 47 43.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s 0 0 0.00000 0 38 30.00000 0.00000 100% - 0s 0 0 0.00000 0 38 30.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 22.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 19.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 17.00000 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 23 16.00000 0.00000 100% - 0s 0 0 0.00000 0 17 16.00000 0.00000 100% - 0s 0 0 0.00000 0 28 16.00000 0.00000 100% - 0s 0 0 0.00000 0 28 16.00000 0.00000 100% - 0s 0 2 0.00000 0 28 16.00000 0.00000 100% - 0s H 190 135 15.0000000 0.00000 100% 3.5 0s H 380 254 14.0000000 0.00000 100% 5.2 0s H 407 251 12.0000000 0.00000 100% 5.8 0s * 425 244 40 11.0000000 0.00000 100% 5.7 0s H 515 296 10.0000000 0.00000 100% 6.2 0s H 1345 670 9.0000000 0.00000 100% 4.8 0s H28052 14555 8.0000000 1.00000 87.5% 1.8 2s 40805 21197 4.00000 56 28 8.00000 1.00000 87.5% 1.8 7s *40946 20158 39 7.0000000 2.50000 64.3% 2.0 9s Cutting planes: Gomory: 70 Cover: 210 MIR: 107 Flow cover: 166 Zero half: 268 Explored 41046 nodes (89111 simplex iterations) in 9.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%