Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:44:23 2012 Optimize a model with 1 rows, 177 columns and 177 nonzeros Model has 160 quadratic objective terms Presolve removed 0 rows and 33 columns Presolve time: 0.00s Presolved: 161 rows, 304 columns, 624 nonzeros Variable types: 0 continuous, 304 integer (303 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 200 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 43 41.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 21.00000 0.00000 100% - 0s 0 0 0.00000 0 20 21.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 17.00000 0.00000 100% - 0s 0 0 0.00000 0 18 17.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 18 15.00000 0.00000 100% - 0s H 6 6 14.0000000 0.00000 100% 3.7 0s H 81 65 13.0000000 0.00000 100% 2.0 0s H 407 235 9.0000000 0.00000 100% 6.2 0s H 965 516 8.0000000 0.00000 100% 6.7 0s H 1291 525 6.0000000 0.00000 100% 5.4 0s 34338 17561 5.00000 90 25 6.00000 1.00000 83.3% 1.2 5s *40894 20128 33 5.0000000 1.19732 76.1% 1.4 8s Cutting planes: Gomory: 70 Cover: 197 MIR: 87 Flow cover: 116 Zero half: 262 Explored 40959 nodes (62567 simplex iterations) in 8.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%