Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:59:57 2012 Optimize a model with 43707 rows, 38612 columns and 168754 nonzeros Presolve removed 590 rows and 2 columns Presolve time: 1.13s Presolved: 43313 rows, 38610 columns, 205358 nonzeros Variable types: 0 continuous, 38610 integer (38610 binary) Found heuristic solution: objective 196.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30582 3.0000841e+00 2.949310e+02 0.000000e+00 5s 37470 3.0000949e+00 1.674322e+02 0.000000e+00 10s 42513 3.0000972e+00 2.033489e+01 0.000000e+00 15s 44906 3.0000000e+00 0.000000e+00 0.000000e+00 17s Root relaxation: objective 3.000000e+00, 44906 iterations, 17.04 seconds Total elapsed time = 42.13s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 66 196.00000 3.00000 98.5% - 43s H 0 0 4.0000000 3.00000 25.0% - 44s H 0 0 3.0000000 3.00000 0.0% - 44s Explored 0 nodes (91069 simplex iterations) in 44.06 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%