Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:13:46 2012 Optimize a model with 10601 rows, 3306 columns and 34825 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.24s Presolved: 10656 rows, 3304 columns, 37702 nonzeros Variable types: 0 continuous, 3304 integer (3304 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 2.000000e+00, 2492 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 5.0000000 2.00000 60.0% - 0s 0 0 3.00000 0 2194 5.00000 3.00000 40.0% - 2s 0 0 3.00000 0 1664 5.00000 3.00000 40.0% - 3s H 0 0 4.0000000 3.00000 25.0% - 3s 0 0 3.00000 0 2396 4.00000 3.00000 25.0% - 5s 0 0 3.00000 0 158 4.00000 3.00000 25.0% - 10s Cutting planes: Clique: 15 Zero half: 2 Explored 0 nodes (34857 simplex iterations) in 11.26 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%