Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:23:07 2012 Optimize a model with 44973 rows, 39800 columns and 173725 nonzeros Presolve removed 1196 rows and 2 columns Presolve time: 1.13s Presolved: 43976 rows, 39798 columns, 209901 nonzeros Variable types: 0 continuous, 39798 integer (39798 binary) Found heuristic solution: objective 199.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 22656 3.0000723e+00 2.015398e+01 0.000000e+00 5s 27576 3.0000799e+00 7.162496e+00 0.000000e+00 10s 30631 3.0000000e+00 0.000000e+00 0.000000e+00 13s Root relaxation: objective 3.000000e+00, 30631 iterations, 12.74 seconds Total elapsed time = 29.13s Total elapsed time = 31.21s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 52 199.00000 3.00000 98.5% - 34s H 0 0 3.0000000 3.00000 0.0% - 34s Explored 0 nodes (89933 simplex iterations) in 34.96 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%