Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:57:45 2012 Optimize a model with 18479 rows, 23870 columns and 78538 nonzeros Presolve removed 345 rows and 5392 columns Presolve time: 0.39s Presolved: 18134 rows, 18478 columns, 72142 nonzeros Variable types: 0 continuous, 18478 integer (18478 binary) Found heuristic solution: objective 154.0000000 Root relaxation: objective 3.000000e+00, 13996 iterations, 1.49 seconds Total elapsed time = 6.75s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 63 154.00000 3.00000 98.1% - 7s H 0 0 3.0000000 3.00000 0.0% - 7s Explored 0 nodes (36489 simplex iterations) in 7.87 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%