Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:12:37 2012 Optimize a model with 44701 rows, 42642 columns and 175716 nonzeros Presolve removed 440 rows and 5358 columns Presolve time: 1.14s Presolved: 44261 rows, 37284 columns, 168900 nonzeros Variable types: 0 continuous, 37284 integer (37284 binary) Found heuristic solution: objective 206.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 26829 3.0000805e+00 3.226763e+01 0.000000e+00 5s 31665 3.0000867e+00 5.576293e+01 0.000000e+00 10s 35264 3.0000000e+00 0.000000e+00 0.000000e+00 13s Root relaxation: objective 3.000000e+00, 35264 iterations, 13.23 seconds Total elapsed time = 30.48s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 96 206.00000 3.00000 98.5% - 36s H 0 0 3.0000000 3.00000 0.0% - 36s Explored 0 nodes (98527 simplex iterations) in 36.49 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%