Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:21:59 2013 Optimize a model with 113652 rows, 7744 columns and 344608 nonzeros Presolve removed 5742 rows and 3894 columns Presolve time: 1.15s Presolved: 107910 rows, 3850 columns, 327468 nonzeros Variable types: 44 continuous, 3806 integer (3806 binary) Found heuristic solution: objective 176165.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34039 1.2753278e+05 0.000000e+00 3.099266e+06 5s 38082 1.2882222e+05 0.000000e+00 0.000000e+00 6s 38082 1.2882222e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.288222e+05, 38082 iterations, 5.83 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 128822.222 0 12 176165.000 128822.222 26.9% - 7s H 0 0 128837.00000 128822.222 0.01% - 7s H 0 0 128834.00000 128822.222 0.01% - 7s Explored 0 nodes (38334 simplex iterations) in 7.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.288340000000e+05, best bound 1.288230000000e+05, gap 0.0085%