Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:51:58 2012 Optimize a model with 18055 rows, 22052 columns and 75478 nonzeros Presolve removed 326 rows and 4146 columns Presolve time: 0.38s Presolved: 17729 rows, 17906 columns, 70354 nonzeros Variable types: 0 continuous, 17906 integer (17906 binary) Found heuristic solution: objective 148.0000000 Root relaxation: objective 3.000000e+00, 11691 iterations, 1.18 seconds Total elapsed time = 6.34s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 22 148.00000 3.00000 98.0% - 6s H 0 0 3.0000000 3.00000 0.0% - 6s Explored 0 nodes (31225 simplex iterations) in 6.97 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%