Gurobi 5.0.1 (linux64) logging started Sat Nov 17 11:20:48 2012 Optimize a model with 74895 rows, 61752 columns and 285198 nonzeros Presolve removed 1008 rows and 3968 columns (presolve time = 5s) ... Presolve removed 1010 rows and 3970 columns Presolve time: 6.58s Presolved: 73885 rows, 57782 columns, 278154 nonzeros Variable types: 0 continuous, 57782 integer (57782 binary) Found heuristic solution: objective 248.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 38465 3.0000872e+00 7.760714e+01 0.000000e+00 5s 43971 3.0000919e+00 2.238763e+01 0.000000e+00 10s 48027 3.0000956e+00 1.813906e+02 0.000000e+00 15s 51147 3.0000983e+00 2.840274e+01 0.000000e+00 20s 54267 3.0001009e+00 1.686560e+02 0.000000e+00 25s 57387 3.0001032e+00 2.584132e+01 0.000000e+00 30s 60351 3.0001052e+00 4.634945e+02 0.000000e+00 35s 63471 3.0001077e+00 9.460425e+00 0.000000e+00 40s 66435 3.0001098e+00 2.305351e+02 0.000000e+00 45s 69711 3.0001129e+00 4.208435e+00 0.000000e+00 50s 72268 3.0000000e+00 0.000000e+00 0.000000e+00 54s Root relaxation: objective 3.000000e+00, 72268 iterations, 53.65 seconds Total elapsed time = 100.99s Total elapsed time = 113.94s Total elapsed time = 116.73s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 165 248.00000 3.00000 98.8% - 117s H 0 0 3.0000000 3.00000 0.0% - 118s Explored 0 nodes (175633 simplex iterations) in 118.17 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%