Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:32:30 2012 Optimize a model with 44420 rows, 40602 columns and 172858 nonzeros Presolve removed 622 rows and 3419 columns Presolve time: 1.19s Presolved: 43798 rows, 37183 columns, 167598 nonzeros Variable types: 0 continuous, 37183 integer (37183 binary) Found heuristic solution: objective 201.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 29827 3.0000929e+00 7.890000e+02 0.000000e+00 5s 36100 3.0001005e+00 8.311447e+01 0.000000e+00 10s 41389 3.0001047e+00 4.594121e+01 0.000000e+00 15s 46564 3.0000000e+00 0.000000e+00 0.000000e+00 20s Root relaxation: objective 3.000000e+00, 46564 iterations, 19.92 seconds Total elapsed time = 33.71s Total elapsed time = 35.28s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 306 201.00000 3.00000 98.5% - 39s H 0 0 3.0000000 3.00000 0.0% - 40s Explored 0 nodes (107280 simplex iterations) in 40.44 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%