Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:23:45 2012 Optimize a model with 45199 rows, 40200 columns and 174798 nonzeros Presolve removed 823 rows and 4202 columns Presolve time: 1.12s Presolved: 44376 rows, 35998 columns, 168154 nonzeros Variable types: 0 continuous, 35998 integer (35998 binary) Found heuristic solution: objective 200.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27856 3.0000737e+00 1.445054e+01 0.000000e+00 5s 33560 3.0000754e+00 5.308537e+01 0.000000e+00 10s 36695 3.0000000e+00 0.000000e+00 0.000000e+00 13s Root relaxation: objective 3.000000e+00, 36695 iterations, 12.83 seconds Total elapsed time = 28.76s Total elapsed time = 31.06s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 66 200.00000 3.00000 98.5% - 31s H 0 0 3.0000000 3.00000 0.0% - 31s Explored 0 nodes (91697 simplex iterations) in 31.81 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%