current bounds on the number of colors: 0 -- 220 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:14 2012 Optimize a model with 27390 rows, 24447 columns and 105710 nonzeros Presolve removed 16 rows and 1760 columns Presolve time: 0.14s Presolved: 27374 rows, 22687 columns, 103950 nonzeros Variable types: 0 continuous, 22687 integer (22687 binary) Root relaxation: objective 0.000000e+00, 379 iterations, 0.01 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 (379 simplex iterations) in 0.16 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 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:14 2012 Optimize a model with 13805 rows, 12347 columns and 52855 nonzeros Presolve removed 16 rows and 880 columns Presolve time: 0.13s Presolved: 13789 rows, 11467 columns, 51975 nonzeros Variable types: 0 continuous, 11467 integer (11467 binary) Root relaxation: objective 0.000000e+00, 381 iterations, 0.01 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 (381 simplex iterations) in 0.14 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:15 2012 Optimize a model with 6889 rows, 6187 columns and 25947 nonzeros Presolve removed 16 rows and 432 columns Presolve time: 0.04s Presolved: 6873 rows, 5755 columns, 25515 nonzeros Variable types: 0 continuous, 5755 integer (5755 binary) Root relaxation: objective 0.000000e+00, 383 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 (383 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:15 2012 Optimize a model with 3431 rows, 3107 columns and 12493 nonzeros Presolve removed 16 rows and 208 columns Presolve time: 0.02s Presolved: 3415 rows, 2899 columns, 12285 nonzeros Variable types: 0 continuous, 2899 integer (2899 binary) Root relaxation: objective 0.000000e+00, 379 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 (379 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:15 2012 Optimize a model with 1702 rows, 1567 columns and 5766 nonzeros Presolve removed 16 rows and 96 columns Presolve time: 0.01s Presolved: 1686 rows, 1471 columns, 5670 nonzeros Variable types: 0 continuous, 1471 integer (1471 binary) Root relaxation: objective 0.000000e+00, 376 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 (376 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:15 2012 Optimize a model with 961 rows, 907 columns and 2883 nonzeros Presolve removed 16 rows and 48 columns Presolve time: 0.00s Presolved: 945 rows, 859 columns, 2835 nonzeros Variable types: 0 continuous, 859 integer (859 binary) Root relaxation: objective 0.000000e+00, 356 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 (356 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:15 2012 Optimize a model with 467 rows, 467 columns and 961 nonzeros Presolve removed 467 rows and 467 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:15 2012 Optimize a model with 714 rows, 687 columns and 1922 nonzeros Presolve removed 226 rows and 245 columns Presolve time: 0.00s Presolved: 488 rows, 442 columns, 1464 nonzeros Variable types: 0 continuous, 442 integer (442 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 0.00000 0 198 - 0.00000 - - 0s Explored 0 nodes (711 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3