Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:02:04 2012 Optimize a model with 71369 rows, 54990 columns and 267928 nonzeros Presolve removed 2596 rows and 5148 columns (presolve time = 5s) ... Presolve removed 2598 rows and 5150 columns Presolve time: 5.98s Presolved: 68771 rows, 49840 columns, 255874 nonzeros Variable types: 0 continuous, 49840 integer (49840 binary) Found heuristic solution: objective 234.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30009 3.0000929e+00 2.740000e+01 0.000000e+00 5s 33784 3.0000962e+00 7.335711e+01 0.000000e+00 10s 36351 3.0000978e+00 2.962555e+02 0.000000e+00 15s 39371 3.0000998e+00 1.744157e+01 0.000000e+00 20s 41938 3.0001013e+00 5.672686e+01 0.000000e+00 25s 44656 3.0001029e+00 6.599751e+01 0.000000e+00 30s 47374 3.0001048e+00 1.436452e+02 0.000000e+00 35s 49790 3.0001062e+00 8.943995e+01 0.000000e+00 40s 52206 3.0001078e+00 1.355105e+01 0.000000e+00 45s 54773 3.0001093e+00 2.945424e+01 0.000000e+00 50s 57189 3.0001108e+00 4.560509e+01 0.000000e+00 55s 59756 3.0001126e+00 3.105943e+01 0.000000e+00 60s 62172 3.0001137e+00 1.206175e+02 0.000000e+00 65s 64588 3.0001151e+00 2.857158e+01 0.000000e+00 70s 67004 3.0001167e+00 1.336739e+02 0.000000e+00 75s 69420 3.0001194e+00 3.995014e+00 0.000000e+00 80s 71836 3.0001197e+00 4.034707e-01 0.000000e+00 85s 72329 3.0000000e+00 0.000000e+00 0.000000e+00 86s Root relaxation: objective 3.000000e+00, 72329 iterations, 86.39 seconds Total elapsed time = 158.60s Total elapsed time = 174.03s Total elapsed time = 181.71s Total elapsed time = 191.01s 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% - 192s Explored 0 nodes (252551 simplex iterations) in 192.15 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%