Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:31:01 2012 Optimize a model with 67554 rows, 52670 columns and 254188 nonzeros Presolve removed 471 rows and 2977 columns (presolve time = 5s) ... Presolve removed 473 rows and 2979 columns Presolve time: 5.15s Presolved: 67081 rows, 49691 columns, 249480 nonzeros Variable types: 0 continuous, 49691 integer (49691 binary) Found heuristic solution: objective 229.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 39117 3.0000553e+00 2.325000e+02 0.000000e+00 5s 52954 3.0001619e+00 8.480000e+01 0.000000e+00 10s 59514 3.0001762e+00 5.533503e+02 0.000000e+00 15s 62196 3.0001814e+00 8.797245e+02 0.000000e+00 20s 64878 3.0001858e+00 4.700058e+01 0.000000e+00 25s 67709 3.0001902e+00 7.030361e+01 0.000000e+00 30s 70391 3.0001941e+00 8.722492e+01 0.000000e+00 35s 73073 3.0001975e+00 1.393134e+02 0.000000e+00 40s 75904 3.0002014e+00 1.610857e+02 0.000000e+00 45s 78735 3.0002057e+00 1.009006e+03 0.000000e+00 50s 81566 3.0002112e+00 1.250888e+01 0.000000e+00 55s 84397 3.0002163e+00 3.896340e+03 0.000000e+00 60s 87228 3.0002200e+00 1.492890e+01 0.000000e+00 65s 89910 3.0002222e+00 5.878089e+01 0.000000e+00 70s 92592 3.0002239e+00 3.083547e+01 0.000000e+00 75s 95274 3.0002253e+00 4.997829e+00 0.000000e+00 80s 96672 3.0000000e+00 0.000000e+00 0.000000e+00 83s Root relaxation: objective 3.000000e+00, 96672 iterations, 82.61 seconds Total elapsed time = 134.99s Total elapsed time = 145.16s Total elapsed time = 160.29s Total elapsed time = 170.63s 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% - 172s Explored 0 nodes (239311 simplex iterations) in 172.78 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%