Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:47:51 2012 Optimize a model with 30081 rows, 31862 columns and 121216 nonzeros Presolve removed 358 rows and 2 columns Presolve time: 0.76s Presolved: 29901 rows, 31860 columns, 151676 nonzeros Variable types: 0 continuous, 31860 integer (31860 binary) Found heuristic solution: objective 178.0000000 Root relaxation: objective 3.000000e+00, 18961 iterations, 2.97 seconds Total elapsed time = 12.87s Total elapsed time = 15.19s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 38 178.00000 3.00000 98.3% - 15s H 0 0 3.0000000 3.00000 0.0% - 15s Explored 0 nodes (60095 simplex iterations) in 15.44 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%