Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:55:35 2012 Optimize a model with 14320 rows, 6480 columns and 49120 nonzeros Presolve removed 2080 rows and 0 columns Presolve time: 0.35s Presolved: 12240 rows, 6480 columns, 44320 nonzeros Variable types: 0 continuous, 6480 integer (6480 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 3.000000e+00, 12186 iterations, 2.12 seconds Total elapsed time = 5.33s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 87 47.00000 3.00000 93.6% - 8s H 0 0 4.0000000 3.00000 25.0% - 8s H 0 0 3.0000000 3.00000 0.0% - 8s Explored 0 nodes (42229 simplex iterations) in 8.39 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%