Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:12:58 2012 Optimize a model with 69070 rows, 57360 columns and 263376 nonzeros Presolve removed 1700 rows and 6453 columns (presolve time = 5s) ... Presolve removed 1702 rows and 6455 columns Presolve time: 5.38s Presolved: 67368 rows, 50905 columns, 252296 nonzeros Variable types: 0 continuous, 50905 integer (50905 binary) Found heuristic solution: objective 239.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30146 3.0000871e+00 3.035294e+01 0.000000e+00 5s 34169 3.0000892e+00 3.890512e+01 0.000000e+00 10s 37000 3.0000916e+00 5.045614e+02 0.000000e+00 15s 40129 3.0000941e+00 1.890480e+02 0.000000e+00 20s 42960 3.0000964e+00 1.904096e+02 0.000000e+00 25s 45940 3.0000999e+00 9.019996e+00 0.000000e+00 30s 48920 3.0001039e+00 5.288908e+01 0.000000e+00 35s 51751 3.0001074e+00 5.163433e+01 0.000000e+00 40s 54731 3.0001095e+00 3.011981e+01 0.000000e+00 45s 56134 3.0000000e+00 0.000000e+00 0.000000e+00 47s Root relaxation: objective 3.000000e+00, 56134 iterations, 47.35 seconds Total elapsed time = 122.11s Total elapsed time = 141.70s 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% - 146s Explored 0 nodes (194178 simplex iterations) in 146.75 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%