Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:03:45 2012 Optimize a model with 36233 rows, 33672 columns and 141457 nonzeros Presolve removed 734 rows and 2 columns Presolve time: 0.82s Presolved: 35682 rows, 33670 columns, 172728 nonzeros Variable types: 0 continuous, 33670 integer (33670 binary) Found heuristic solution: objective 183.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 23803 3.0000724e+00 1.324916e+00 0.000000e+00 5s 24056 3.0000000e+00 0.000000e+00 0.000000e+00 5s Root relaxation: objective 3.000000e+00, 24056 iterations, 5.22 seconds Total elapsed time = 15.77s 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% - 18s Explored 0 nodes (58831 simplex iterations) in 18.21 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%