current bounds on the number of colors: 0 -- 167 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:37 2012 Optimize a model with 11953 rows, 14003 columns and 49219 nonzeros Presolve removed 26 rows and 2158 columns Presolve time: 0.12s Presolved: 11927 rows, 11845 columns, 47061 nonzeros Variable types: 0 continuous, 11845 integer (11845 binary) Root relaxation: objective 0.000000e+00, 242 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 (242 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 -- 83 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:37 2012 Optimize a model with 5989 rows, 6989 columns and 24313 nonzeros Presolve removed 26 rows and 1066 columns Presolve time: 0.05s Presolved: 5963 rows, 5923 columns, 23247 nonzeros Variable types: 0 continuous, 5923 integer (5923 binary) Root relaxation: objective 0.000000e+00, 241 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 (241 simplex iterations) in 0.06 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 -- 41 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:38 2012 Optimize a model with 3007 rows, 3482 columns and 11860 nonzeros Presolve removed 26 rows and 520 columns Presolve time: 0.02s Presolved: 2981 rows, 2962 columns, 11340 nonzeros Variable types: 0 continuous, 2962 integer (2962 binary) Root relaxation: objective 0.000000e+00, 240 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 (240 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 16:22:38 2012 Optimize a model with 1587 rows, 1812 columns and 5930 nonzeros Presolve removed 26 rows and 260 columns Presolve time: 0.01s Presolved: 1561 rows, 1552 columns, 5670 nonzeros Variable types: 0 continuous, 1552 integer (1552 binary) Root relaxation: objective 0.000000e+00, 244 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 (244 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 16:22:38 2012 Optimize a model with 877 rows, 977 columns and 2965 nonzeros Presolve removed 26 rows and 130 columns Presolve time: 0.00s Presolved: 851 rows, 847 columns, 2835 nonzeros Variable types: 0 continuous, 847 integer (847 binary) Root relaxation: objective 0.000000e+00, 214 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 (214 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 16:22:38 2012 Optimize a model with 451 rows, 476 columns and 1186 nonzeros Presolve removed 181 rows and 214 columns Presolve time: 0.00s Presolved: 270 rows, 262 columns, 810 nonzeros Variable types: 0 continuous, 262 integer (262 binary) Root relaxation: objective 0.000000e+00, 143 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 0 114 - 0.00000 - - 0s Explored 0 nodes (423 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 16:22:38 2012 Optimize a model with 593 rows, 643 columns and 1779 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 567 rows, 565 columns, 1701 nonzeros Variable types: 0 continuous, 565 integer (565 binary) Root relaxation: objective 0.000000e+00, 224 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 (307 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