Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:49:25 2012 Optimize a model with 42485 rows, 37830 columns and 164316 nonzeros Presolve removed 778 rows and 2 columns Presolve time: 1.00s Presolved: 41901 rows, 37828 columns, 199582 nonzeros Variable types: 0 continuous, 37828 integer (37828 binary) Found heuristic solution: objective 194.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 23283 3.0000767e+00 1.102941e+01 0.000000e+00 5s 28486 3.0000779e+00 7.088976e+00 0.000000e+00 10s 31259 3.0000000e+00 0.000000e+00 0.000000e+00 13s Root relaxation: objective 3.000000e+00, 31259 iterations, 12.77 seconds Total elapsed time = 37.11s 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% - 39s Explored 0 nodes (83773 simplex iterations) in 39.40 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%