Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:40:45 2012 Optimize a model with 1 rows, 172 columns and 172 nonzeros Model has 153 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 154 rows, 299 columns, 605 nonzeros Variable types: 0 continuous, 299 integer (298 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 201 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 38 40.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 34.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 27.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 22.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 12.00000 0.00000 100% - 0s 0 0 0.00000 0 23 12.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 23 9.00000 0.00000 100% - 0s H 55 29 8.0000000 0.00000 100% 2.6 0s H 109 41 5.0000000 0.00000 100% 2.5 0s H 412 111 4.0000000 0.00000 100% 13.4 0s H 439 47 3.0000000 0.00000 100% 14.9 0s Cutting planes: Cover: 282 MIR: 2 Explored 491 nodes (10530 simplex iterations) in 0.22 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%