Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:56:45 2012 Optimize a model with 48959 rows, 41820 columns and 187678 nonzeros Presolve removed 1243 rows and 3470 columns Presolve time: 1.23s Presolved: 47716 rows, 38350 columns, 180682 nonzeros Variable types: 0 continuous, 38350 integer (38350 binary) Found heuristic solution: objective 204.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 25608 3.0000827e+00 3.050000e+01 0.000000e+00 5s 30984 3.0000869e+00 1.093829e+02 0.000000e+00 10s 35720 3.0000926e+00 2.650917e+01 0.000000e+00 15s 40063 3.0000000e+00 0.000000e+00 0.000000e+00 20s Root relaxation: objective 3.000000e+00, 40063 iterations, 19.97 seconds Total elapsed time = 49.15s Total elapsed time = 50.33s 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% - 51s Explored 0 nodes (98930 simplex iterations) in 51.06 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%