Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:10:21 2013 Optimize a model with 377 rows, 169 columns and 1183 nonzeros Presolve removed 83 rows and 83 columns Presolve time: 0.00s Presolved: 294 rows, 86 columns, 962 nonzeros Variable types: 8 continuous, 78 integer (78 binary) Found heuristic solution: objective 3636.0000000 Root relaxation: objective 3.123171e+03, 22 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3123.17073 0 5 3636.00000 3123.17073 14.1% - 0s H 0 0 3142.0000000 3123.17073 0.60% - 0s 0 0 3127.40906 0 7 3142.00000 3127.40906 0.46% - 0s 0 0 3127.40906 0 5 3142.00000 3127.40906 0.46% - 0s 0 0 3128.20248 0 8 3142.00000 3128.20248 0.44% - 0s 0 0 3131.39534 0 9 3142.00000 3131.39534 0.34% - 0s 0 0 3131.66667 0 9 3142.00000 3131.66667 0.33% - 0s H 0 0 3136.0000000 3131.66667 0.14% - 0s H 0 0 3135.0000000 3131.66667 0.11% - 0s 0 2 3132.03643 0 9 3135.00000 3132.03643 0.09% - 0s Cutting planes: Gomory: 2 MIR: 3 Explored 2 nodes (76 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.135000000000e+03, best bound 3.135000000000e+03, gap 0.0%