Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:13:03 2013 Optimize a model with 1610 rows, 46165 columns and 2230341 nonzeros Presolve removed 39 rows and 235 columns (presolve time = 5s) ... Presolve removed 39 rows and 235 columns Presolve time: 6.59s Presolved: 1571 rows, 45930 columns, 2218516 nonzeros Variable types: 0 continuous, 45930 integer (45930 binary) Found heuristic solution: objective 26200.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7823 1.6220354e+04 7.088215e+02 0.000000e+00 5s 10652 1.6294000e+04 0.000000e+00 0.000000e+00 10s Root relaxation: objective 1.629400e+04, 10652 iterations, 9.60 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 16294.000000 16294.0000 0.0% - 16s Explored 0 nodes (10652 simplex iterations) in 16.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629400000000e+04, best bound 1.629400000000e+04, gap 0.0%