Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:06:46 2012 Optimize a model with 1614 rows, 380 columns and 5128 nonzeros Presolve removed 895 rows and 2 columns Presolve time: 0.04s Presolved: 719 rows, 378 columns, 3494 nonzeros Variable types: 0 continuous, 378 integer (378 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 5.000000e+00, 1190 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5.00000 0 16 19.00000 5.00000 73.7% - 0s H 0 0 18.0000000 5.00000 72.2% - 0s H 0 0 6.0000000 5.00000 16.7% - 0s 0 0 5.00000 0 50 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 14 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 12 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 25 6.00000 5.00000 16.7% - 0s H 0 0 5.0000000 5.00000 0.0% - 0s Cutting planes: Clique: 1 Zero half: 1 Explored 0 nodes (5032 simplex iterations) in 0.27 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%