Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:51:58 2012 Optimize a model with 43094 rows, 38220 columns and 166528 nonzeros Presolve removed 412 rows and 3902 columns Presolve time: 1.13s Presolved: 42682 rows, 34318 columns, 161215 nonzeros Variable types: 0 continuous, 34318 integer (34318 binary) Found heuristic solution: objective 195.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27042 3.0000716e+00 1.140625e+01 0.000000e+00 5s 33142 3.0000737e+00 4.329178e+01 0.000000e+00 10s 36991 3.0000000e+00 0.000000e+00 0.000000e+00 13s Root relaxation: objective 3.000000e+00, 36991 iterations, 12.97 seconds Total elapsed time = 30.09s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 1034 195.00000 3.00000 98.5% - 34s H 0 0 3.0000000 3.00000 0.0% - 36s Explored 0 nodes (119219 simplex iterations) in 36.39 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%