Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:03:36 2012 Optimize a model with 39399 rows, 39006 columns and 156219 nonzeros Presolve removed 396 rows and 2 columns Presolve time: 0.96s Presolved: 39200 rows, 39004 columns, 193647 nonzeros Variable types: 0 continuous, 39004 integer (39004 binary) Found heuristic solution: objective 197.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 31831 3.0000764e+00 2.141964e+01 0.000000e+00 5s 34600 3.0000000e+00 0.000000e+00 0.000000e+00 7s Root relaxation: objective 3.000000e+00, 34600 iterations, 6.56 seconds Total elapsed time = 25.62s 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% - 27s Explored 0 nodes (88548 simplex iterations) in 27.78 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%