Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:19:47 2012 Optimize a model with 36659 rows, 35532 columns and 144570 nonzeros Presolve removed 774 rows and 3762 columns Presolve time: 0.94s Presolved: 35885 rows, 31770 columns, 138548 nonzeros Variable types: 0 continuous, 31770 integer (31770 binary) Found heuristic solution: objective 188.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 23831 3.0000782e+00 1.092827e+00 0.000000e+00 5s 24067 3.0000000e+00 0.000000e+00 0.000000e+00 5s Root relaxation: objective 3.000000e+00, 24067 iterations, 5.13 seconds Total elapsed time = 14.28s Total elapsed time = 15.63s 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% - 15s Explored 0 nodes (64087 simplex iterations) in 15.71 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%