Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:18:14 2012 Optimize a model with 36283 rows, 35532 columns and 143442 nonzeros Presolve removed 1534 rows and 5266 columns Presolve time: 1.00s Presolved: 34749 rows, 30266 columns, 134048 nonzeros Variable types: 0 continuous, 30266 integer (30266 binary) Found heuristic solution: objective 188.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 22565 3.0000731e+00 2.758459e+01 0.000000e+00 5s 26129 3.0000000e+00 0.000000e+00 0.000000e+00 8s Root relaxation: objective 3.000000e+00, 26129 iterations, 7.73 seconds Total elapsed time = 26.84s Total elapsed time = 31.59s Total elapsed time = 35.37s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 578 188.00000 3.00000 98.4% - 42s H 0 0 3.0000000 3.00000 0.0% - 42s Explored 0 nodes (114694 simplex iterations) in 42.81 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%