Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:14:26 2013 Optimize a model with 1400 rows, 30500 columns and 96250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.23s Presolved: 1350 rows, 30450 columns, 91200 nonzeros Variable types: 30100 continuous, 350 integer (350 binary) Root relaxation: objective 1.749223e+05, 2308 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 174922.321 0 6 - 174922.321 - - 0s 0 0 174930.896 0 6 - 174930.896 - - 0s 0 0 174931.751 0 6 - 174931.751 - - 0s 0 0 174932.888 0 7 - 174932.888 - - 0s 0 0 174932.934 0 7 - 174932.934 - - 0s 0 0 174933.300 0 7 - 174933.300 - - 1s 0 0 174933.300 0 7 - 174933.300 - - 1s 0 0 174933.300 0 7 - 174933.300 - - 1s 0 0 174933.329 0 8 - 174933.329 - - 1s 0 0 174933.386 0 7 - 174933.386 - - 1s 0 0 174933.413 0 8 - 174933.413 - - 1s 0 0 174933.413 0 8 - 174933.413 - - 1s 0 2 174936.900 0 8 - 174936.900 - - 3s 37 39 176210.112 37 3 - 175053.326 - 19.0 5s * 80 61 80 176716.99513 175053.326 0.94% 11.2 5s * 128 55 24 176398.22225 175214.646 0.67% 15.4 7s * 149 54 16 176365.06377 175274.296 0.62% 15.7 7s H 164 52 176357.70305 175345.503 0.57% 15.9 7s H 224 38 176351.16406 175806.688 0.31% 20.4 8s H 285 9 176314.90673 176149.543 0.09% 18.1 9s * 306 21 56 176278.70839 176152.776 0.07% 17.2 9s 336 34 176216.742 34 3 176278.708 176161.239 0.07% 16.0 10s H 339 27 176261.43355 176161.239 0.06% 15.9 10s H 399 0 176210.41881 176194.069 0.01% 13.8 10s Cutting planes: Flow cover: 10 Explored 399 nodes (9169 simplex iterations) in 10.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.762104188093e+05, best bound 1.761940692852e+05, gap 0.0093%