Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:43:57 2012 Optimize a model with 74114 rows, 59292 columns and 280420 nonzeros Presolve removed 1479 rows and 5103 columns (presolve time = 5s) ... Presolve removed 1481 rows and 5105 columns Presolve time: 6.09s Presolved: 72633 rows, 54187 columns, 271074 nonzeros Variable types: 0 continuous, 54187 integer (54187 binary) Found heuristic solution: objective 243.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 38175 3.0001236e+00 1.454545e+02 0.000000e+00 5s 42972 3.0001515e+00 9.470000e+01 0.000000e+00 10s 48208 3.0001679e+00 1.291875e+02 0.000000e+00 15s 53906 3.0001752e+00 2.029395e+03 0.000000e+00 20s 56370 3.0001793e+00 3.391328e+01 0.000000e+00 25s 58988 3.0001841e+00 4.619733e+01 0.000000e+00 30s 61606 3.0001906e+00 1.829355e+02 0.000000e+00 35s 64224 3.0001955e+00 1.408977e+03 0.000000e+00 40s 66842 3.0002005e+00 1.454056e+01 0.000000e+00 45s 69614 3.0002069e+00 6.896947e+00 0.000000e+00 50s 72232 3.0002112e+00 6.260117e+01 0.000000e+00 55s 75004 3.0002156e+00 5.527421e+01 0.000000e+00 60s 77468 3.0002187e+00 2.036823e+02 0.000000e+00 65s 80086 3.0002212e+00 3.402627e+01 0.000000e+00 70s 80989 3.0000000e+00 0.000000e+00 0.000000e+00 72s Root relaxation: objective 3.000000e+00, 80989 iterations, 72.02 seconds Total elapsed time = 137.28s Total elapsed time = 140.96s Total elapsed time = 148.66s Total elapsed time = 152.79s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 78 243.00000 3.00000 98.8% - 153s H 0 0 3.0000000 3.00000 0.0% - 153s Explored 0 nodes (194804 simplex iterations) in 153.19 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%