Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:51:37 2012 Optimize a model with 70612 rows, 58322 columns and 268954 nonzeros Presolve removed 1465 rows and 4579 columns (presolve time = 5s) ... Presolve removed 1467 rows and 4581 columns Presolve time: 6.23s Presolved: 69145 rows, 53741 columns, 260186 nonzeros Variable types: 0 continuous, 53741 integer (53741 binary) Found heuristic solution: objective 241.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37358 3.0001101e+00 2.085000e+02 0.000000e+00 5s 42274 3.0001430e+00 5.040741e+01 0.000000e+00 10s 49526 3.0001631e+00 2.775293e+02 0.000000e+00 15s 52244 3.0001697e+00 1.287150e+02 0.000000e+00 20s 54660 3.0001728e+00 6.177806e+01 0.000000e+00 25s 57529 3.0001772e+00 1.185955e+02 0.000000e+00 30s 60096 3.0001808e+00 5.270378e+01 0.000000e+00 35s 62663 3.0001840e+00 6.745514e+02 0.000000e+00 40s 65230 3.0001871e+00 1.983312e+02 0.000000e+00 45s 67948 3.0001902e+00 8.087369e+01 0.000000e+00 50s 70666 3.0001939e+00 2.616537e+01 0.000000e+00 55s 73082 3.0001964e+00 3.727111e+01 0.000000e+00 60s 75800 3.0002003e+00 6.139838e+01 0.000000e+00 65s 78367 3.0002035e+00 4.103331e+01 0.000000e+00 70s 80934 3.0002064e+00 4.390869e+00 0.000000e+00 75s 83501 3.0002076e+00 3.491219e+00 0.000000e+00 80s 85108 3.0000000e+00 0.000000e+00 0.000000e+00 83s Root relaxation: objective 3.000000e+00, 85108 iterations, 83.45 seconds Total elapsed time = 139.01s Total elapsed time = 140.06s 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% - 143s Explored 0 nodes (166993 simplex iterations) in 143.55 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%