Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:31:43 2012 Optimize a model with 30793 rows, 30102 columns and 121617 nonzeros Presolve removed 370 rows and 3808 columns Presolve time: 0.69s Presolved: 30423 rows, 26294 columns, 116594 nonzeros Variable types: 0 continuous, 26294 integer (26294 binary) Found heuristic solution: objective 173.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 24200 3.0000669e+00 4.135554e+00 0.000000e+00 5s 24346 3.0000000e+00 0.000000e+00 0.000000e+00 5s Root relaxation: objective 3.000000e+00, 24346 iterations, 5.11 seconds Total elapsed time = 17.45s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 19s Explored 0 nodes (56697 simplex iterations) in 19.33 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%