Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:30:05 2013 Optimize a model with 197540 rows, 196140 columns and 784140 nonzeros Presolve removed 13187 rows and 0 columns Presolve time: 1.93s Presolved: 184353 rows, 196140 columns, 757766 nonzeros Variable types: 196000 continuous, 140 integer (140 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20677 1.3665541e+05 3.432757e+04 0.000000e+00 5s 28775 1.6505310e+05 6.255705e+04 0.000000e+00 10s 38926 2.1402353e+05 5.408480e+03 0.000000e+00 15s 45632 2.2069722e+05 1.207223e+03 0.000000e+00 20s 46642 2.2082887e+05 0.000000e+00 0.000000e+00 22s Root relaxation: objective 2.208289e+05, 46642 iterations, 21.90 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220828.874 0 1 - 220828.874 - - 24s H 0 0 222831.00000 220828.874 0.90% - 25s 0 0 220829.782 0 2 222831.000 220829.782 0.90% - 27s 0 0 220829.782 0 1 222831.000 220829.782 0.90% - 54s 0 0 220830.398 0 3 222831.000 220830.398 0.90% - 56s 0 2 220856.519 0 3 222831.000 220856.519 0.89% - 66s 4 6 221109.274 4 2 222831.000 220980.437 0.83% 537 70s H 5 5 222293.00000 220980.437 0.59% 429 70s H 8 8 221984.00000 220980.437 0.45% 318 71s 16 15 221226.620 16 1 221984.000 220980.437 0.45% 227 75s H 17 13 221636.85714 220980.437 0.30% 213 75s * 22 11 20 221506.00000 220980.437 0.24% 189 76s * 24 9 19 221420.00000 220980.437 0.20% 176 76s 29 12 221284.000 4 1 221420.000 221118.667 0.14% 207 80s * 32 10 7 221360.00000 221118.667 0.11% 194 80s H 35 6 221291.68571 221119.102 0.08% 178 80s * 37 7 8 221227.00000 221159.446 0.03% 173 80s Cutting planes: Gomory: 2 Flow cover: 1 Explored 44 nodes (78689 simplex iterations) in 81.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.212270000000e+05, best bound 2.212066666667e+05, gap 0.0092%