Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:10:37 2012 Optimize a model with 59963 rows, 52212 columns and 230962 nonzeros Presolve removed 937 rows and 5246 columns Presolve time: 1.59s Presolved: 59026 rows, 46966 columns, 222920 nonzeros Variable types: 0 continuous, 46966 integer (46966 binary) Found heuristic solution: objective 228.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30893 3.0000840e+00 1.591176e+01 0.000000e+00 5s 35405 3.0000864e+00 2.736414e+02 0.000000e+00 10s 39212 3.0000894e+00 1.871651e+01 0.000000e+00 15s 42878 3.0000922e+00 5.858571e+01 0.000000e+00 20s 46685 3.0000949e+00 1.037500e+02 0.000000e+00 25s 50210 3.0000972e+00 2.829637e-01 0.000000e+00 30s 50416 3.0000000e+00 0.000000e+00 0.000000e+00 30s Root relaxation: objective 3.000000e+00, 50416 iterations, 30.36 seconds Total elapsed time = 73.51s Total elapsed time = 78.40s Total elapsed time = 82.00s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 88 228.00000 3.00000 98.7% - 83s H 0 0 3.0000000 3.00000 0.0% - 83s Explored 0 nodes (133556 simplex iterations) in 83.40 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%