Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:47:53 2012 Optimize a model with 45268 rows, 41412 columns and 176202 nonzeros Presolve removed 431 rows and 4671 columns Presolve time: 1.11s Presolved: 44837 rows, 36741 columns, 170076 nonzeros Variable types: 0 continuous, 36741 integer (36741 binary) Found heuristic solution: objective 203.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 31039 3.0000793e+00 2.200993e+01 0.000000e+00 5s 36247 3.0000864e+00 4.293153e+01 0.000000e+00 10s 41331 3.0000912e+00 1.954429e+01 0.000000e+00 15s 46043 3.0000945e+00 2.855913e+01 0.000000e+00 20s 47108 3.0000000e+00 0.000000e+00 0.000000e+00 21s Root relaxation: objective 3.000000e+00, 47108 iterations, 21.10 seconds Total elapsed time = 45.50s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 72 203.00000 3.00000 98.5% - 48s H 0 0 3.0000000 3.00000 0.0% - 48s Explored 0 nodes (105548 simplex iterations) in 48.46 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%