current bounds on the number of colors: 0 -- 211 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:21 2012 Optimize a model with 24571 rows, 22387 columns and 95235 nonzeros Presolve removed 20 rows and 2100 columns Presolve time: 0.14s Presolved: 24551 rows, 20287 columns, 93135 nonzeros Variable types: 0 continuous, 20287 integer (20287 binary) Root relaxation: objective 0.000000e+00, 350 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 (350 simplex iterations) in 0.17 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 -- 105 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:22 2012 Optimize a model with 12275 rows, 11204 columns and 47164 nonzeros Presolve removed 20 rows and 1040 columns Presolve time: 0.11s Presolved: 12255 rows, 10164 columns, 46124 nonzeros Variable types: 0 continuous, 10164 integer (10164 binary) Root relaxation: objective 0.000000e+00, 349 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 (349 simplex iterations) in 0.13 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:22 2012 Optimize a model with 6243 rows, 5718 columns and 23582 nonzeros Presolve removed 20 rows and 520 columns Presolve time: 0.04s Presolved: 6223 rows, 5198 columns, 23062 nonzeros Variable types: 0 continuous, 5198 integer (5198 binary) Root relaxation: objective 0.000000e+00, 350 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 (350 simplex iterations) in 0.04 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:22 2012 Optimize a model with 3227 rows, 2975 columns and 11791 nonzeros Presolve removed 20 rows and 260 columns Presolve time: 0.01s Presolved: 3207 rows, 2715 columns, 11531 nonzeros Variable types: 0 continuous, 2715 integer (2715 binary) Root relaxation: objective 0.000000e+00, 368 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 (368 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 16:33:22 2012 Optimize a model with 1603 rows, 1498 columns and 5442 nonzeros Presolve removed 20 rows and 120 columns Presolve time: 0.01s Presolved: 1583 rows, 1378 columns, 5322 nonzeros Variable types: 0 continuous, 1378 integer (1378 binary) Root relaxation: objective 0.000000e+00, 344 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 (344 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 16:33:22 2012 Optimize a model with 907 rows, 865 columns and 2721 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 887 rows, 805 columns, 2661 nonzeros Variable types: 0 continuous, 805 integer (805 binary) Root relaxation: objective 0.000000e+00, 323 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 (323 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 16:33:22 2012 Optimize a model with 443 rows, 443 columns and 907 nonzeros Presolve removed 443 rows and 443 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 16:33:22 2012 Optimize a model with 675 rows, 654 columns and 1814 nonzeros Presolve removed 217 rows and 240 columns Presolve time: 0.00s Presolved: 458 rows, 414 columns, 1374 nonzeros Variable types: 0 continuous, 414 integer (414 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 0.00000 0 185 - 0.00000 - - 0s Explored 0 nodes (659 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