Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:02:31 2013 Optimize a model with 135 rows, 100 columns and 360 nonzeros Presolve removed 45 rows and 45 columns Presolve time: 0.00s Presolved: 90 rows, 55 columns, 270 nonzeros Variable types: 10 continuous, 45 integer (45 binary) Found heuristic solution: objective 2735.0000000 Root relaxation: objective 5.180000e+02, 40 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 518.00000 0 38 2735.00000 518.00000 81.1% - 0s H 0 0 2656.0000000 518.00000 80.5% - 0s 0 0 777.04203 0 32 2656.00000 777.04203 70.7% - 0s 0 0 789.92733 0 33 2656.00000 789.92733 70.3% - 0s 0 0 790.22748 0 35 2656.00000 790.22748 70.2% - 0s 0 0 790.22748 0 35 2656.00000 790.22748 70.2% - 0s H 0 0 2429.0000000 790.22748 67.5% - 0s H 0 0 2345.0000000 790.22748 66.3% - 0s H 0 0 2303.0000000 790.22748 65.7% - 0s 0 2 791.33843 0 35 2303.00000 791.33843 65.6% - 0s H 55 41 2181.0000000 819.48520 62.4% 6.1 0s H 110 78 2120.0000000 836.23884 60.6% 6.1 0s H 137 103 2096.0000000 836.23884 60.1% 5.4 0s * 847 424 28 2073.0000000 1027.33157 50.4% 5.6 0s * 1010 414 30 2060.0000000 1027.33157 50.1% 5.3 0s * 4690 1332 32 2058.0000000 1194.00526 42.0% 3.5 0s Cutting planes: Gomory: 11 Implied bound: 2 MIR: 9 Explored 60699 nodes (128308 simplex iterations) in 2.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.058000000000e+03, best bound 2.058000000000e+03, gap 0.0%