Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:11:24 2012 Optimize a model with 46329 rows, 42230 columns and 180193 nonzeros Presolve removed 412 rows and 2 columns Presolve time: 1.13s Presolved: 46122 rows, 42228 columns, 220745 nonzeros Variable types: 0 continuous, 42228 integer (42228 binary) Found heuristic solution: objective 205.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 29296 3.0000841e+00 1.237915e+02 0.000000e+00 5s 33958 3.0000892e+00 1.214320e+03 0.000000e+00 10s 38242 3.0000934e+00 5.977182e+00 0.000000e+00 15s 40471 3.0000000e+00 0.000000e+00 0.000000e+00 18s Root relaxation: objective 3.000000e+00, 40471 iterations, 17.54 seconds Total elapsed time = 42.58s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 147 205.00000 3.00000 98.5% - 44s H 0 0 3.0000000 3.00000 0.0% - 44s Explored 0 nodes (93266 simplex iterations) in 44.69 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%