Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:06:15 2012 Optimize a model with 144 rows, 72 columns and 472 nonzeros Presolve removed 72 rows and 0 columns Presolve time: 0.00s Presolved: 72 rows, 72 columns, 328 nonzeros Variable types: 0 continuous, 72 integer (72 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 4.000000e+00, 37 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 4.0000000 4.00000 0.0% - 0s Explored 0 nodes (37 simplex iterations) in 0.00 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%