Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:06:18 2012 Optimize a model with 441 rows, 182 columns and 1441 nonzeros Presolve removed 197 rows and 2 columns Presolve time: 0.00s Presolved: 244 rows, 180 columns, 961 nonzeros Variable types: 0 continuous, 180 integer (180 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 4.000000e+00, 192 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4.00000 0 13 13.00000 4.00000 69.2% - 0s H 0 0 5.0000000 4.00000 20.0% - 0s H 0 0 4.0000000 4.00000 0.0% - 0s Explored 0 nodes (419 simplex iterations) in 0.01 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%