Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:57:30 2012 Optimize a model with 35837 rows, 32942 columns and 139549 nonzeros Presolve removed 726 rows and 2 columns Presolve time: 0.86s Presolved: 35292 rows, 32940 columns, 170112 nonzeros Variable types: 0 continuous, 32940 integer (32940 binary) Found heuristic solution: objective 181.0000000 Root relaxation: objective 3.000000e+00, 22587 iterations, 4.75 seconds Total elapsed time = 15.97s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 66 181.00000 3.00000 98.3% - 20s H 0 0 3.0000000 3.00000 0.0% - 20s Explored 0 nodes (62513 simplex iterations) in 20.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%