current bounds on the number of colors: 0 -- 163 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:56 2012 Optimize a model with 9640 rows, 13320 columns and 41634 nonzeros Presolve removed 36 rows and 2916 columns Presolve time: 0.11s Presolved: 9604 rows, 10404 columns, 38718 nonzeros Variable types: 0 continuous, 10404 integer (10404 binary) Root relaxation: objective 0.000000e+00, 211 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (211 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 81 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:56 2012 Optimize a model with 4843 rows, 6637 columns and 20560 nonzeros Presolve removed 36 rows and 1440 columns Presolve time: 0.04s Presolved: 4807 rows, 5197 columns, 19120 nonzeros Variable types: 0 continuous, 5197 integer (5197 binary) Root relaxation: objective 0.000000e+00, 211 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (211 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 40 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:56 2012 Optimize a model with 2503 rows, 3377 columns and 10280 nonzeros Presolve removed 36 rows and 720 columns Presolve time: 0.02s Presolved: 2467 rows, 2657 columns, 9560 nonzeros Variable types: 0 continuous, 2657 integer (2657 binary) Root relaxation: objective 0.000000e+00, 210 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (210 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:57 2012 Optimize a model with 1333 rows, 1747 columns and 5140 nonzeros Presolve removed 36 rows and 360 columns Presolve time: 0.01s Presolved: 1297 rows, 1387 columns, 4780 nonzeros Variable types: 0 continuous, 1387 integer (1387 binary) Root relaxation: objective 0.000000e+00, 226 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (327 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:57 2012 Optimize a model with 748 rows, 932 columns and 2570 nonzeros Presolve removed 36 rows and 180 columns Presolve time: 0.00s Presolved: 712 rows, 752 columns, 2390 nonzeros Variable types: 0 continuous, 752 integer (752 binary) Root relaxation: objective 0.000000e+00, 201 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (273 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:57 2012 Optimize a model with 397 rows, 443 columns and 1028 nonzeros Presolve removed 177 rows and 220 columns Presolve time: 0.00s Presolved: 220 rows, 223 columns, 660 nonzeros Variable types: 0 continuous, 223 integer (223 binary) Root relaxation: objective 0.000000e+00, 110 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 87 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (320 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:57 2012 Optimize a model with 514 rows, 606 columns and 1542 nonzeros Presolve removed 36 rows and 108 columns Presolve time: 0.00s Presolved: 478 rows, 498 columns, 1434 nonzeros Variable types: 0 continuous, 498 integer (498 binary) Root relaxation: objective 0.000000e+00, 192 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (192 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% optimal solution found: number of colors: 3