Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:31:26 2014 Optimize a model with 4852 rows, 2451 columns and 12005 nonzeros Presolve removed 49 rows and 0 columns Presolve time: 0.11s Presolved: 4803 rows, 2451 columns, 11956 nonzeros Variable types: 1 continuous, 2450 integer (2450 binary) Found heuristic solution: objective 1.1110475 Found heuristic solution: objective 1.0726238 Found heuristic solution: objective 0.7656846 Root relaxation: objective 8.140715e-03, 3095 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00814 0 1987 0.76568 0.00814 98.9% - 0s H 0 0 0.4633891 0.00814 98.2% - 0s 0 0 0.01484 0 1040 0.46339 0.01484 96.8% - 0s 0 0 0.04299 0 560 0.46339 0.04299 90.7% - 1s H 0 0 0.4342069 0.04299 90.1% - 1s H 0 0 0.4197521 0.04299 89.8% - 1s 0 0 0.07238 0 463 0.41975 0.07238 82.8% - 1s H 0 0 0.4084681 0.07238 82.3% - 1s 0 0 0.09355 0 404 0.40847 0.09355 77.1% - 1s 0 0 0.09888 0 394 0.40847 0.09888 75.8% - 1s H 0 0 0.3912120 0.09888 74.7% - 1s 0 0 0.11841 0 404 0.39121 0.11841 69.7% - 1s H 0 0 0.3586235 0.11841 67.0% - 1s 0 1 0.11841 0 404 0.35862 0.11841 67.0% - 3s H 1 1 0.3409528 0.11841 65.3% 727 3s H 3 2 0.3316297 0.19965 39.8% 242 3s H 4 2 0.3125691 0.20396 34.7% 182 3s H 5 3 0.3055382 0.24096 21.1% 145 3s H 5 3 0.3022949 0.24096 20.3% 145 3s H 5 2 0.2965633 0.24096 18.7% 145 3s H 8 4 0.2836774 0.27288 3.81% 604 4s H 8 4 0.2759294 0.27288 1.10% 604 4s * 11 6 30 0.2728804 0.27288 0.00% 454 4s Explored 11 nodes (22703 simplex iterations) in 4.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.728804101342e-01, best bound 2.728804101342e-01, gap 0.0%