Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:12:07 2012 Optimize a model with 10487 rows, 3306 columns and 34483 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.24s Presolved: 10542 rows, 3304 columns, 37364 nonzeros Variable types: 0 continuous, 3304 integer (3304 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 2.000000e+00, 2326 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 114 57.00000 2.00000 96.5% - 0s H 0 0 46.0000000 2.00000 95.7% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.66667 0 160 5.00000 2.66667 46.7% - 1s 0 0 2.67073 0 2826 5.00000 2.67073 46.6% - 1s 0 0 2.67073 0 2819 5.00000 2.67073 46.6% - 2s 0 0 2.67073 0 2820 5.00000 2.67073 46.6% - 3s 0 0 2.67073 0 2642 5.00000 2.67073 46.6% - 5s 0 0 2.67073 0 2614 5.00000 2.67073 46.6% - 7s 0 0 2.67073 0 2645 5.00000 2.67073 46.6% - 9s 0 0 2.67073 0 2728 5.00000 2.67073 46.6% - 10s 0 0 2.67073 0 2731 5.00000 2.67073 46.6% - 12s 0 0 2.67073 0 2700 5.00000 2.67073 46.6% - 14s 0 0 2.67073 0 2655 5.00000 2.67073 46.6% - 17s 0 0 2.67073 0 2676 5.00000 2.67073 46.6% - 19s 0 0 2.67073 0 2676 5.00000 2.67073 46.6% - 19s 0 2 2.80000 0 2676 5.00000 2.80000 44.0% - 26s * 30 4 23 4.0000000 3.00000 25.0% 404 28s Cutting planes: Clique: 71 Zero half: 23 Explored 35 nodes (79103 simplex iterations) in 29.73 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%