current bounds on the number of colors: 0 -- 168 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:46 2012 Optimize a model with 12096 rows, 14254 columns and 49896 nonzeros Presolve removed 27 rows and 2268 columns Presolve time: 0.12s Presolved: 12069 rows, 11986 columns, 47628 nonzeros Variable types: 0 continuous, 11986 integer (11986 binary) Root relaxation: objective 0.000000e+00, 247 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 (247 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 -- 84 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:46 2012 Optimize a model with 6132 rows, 7198 columns and 24948 nonzeros Presolve removed 27 rows and 1134 columns Presolve time: 0.05s Presolved: 6105 rows, 6064 columns, 23814 nonzeros Variable types: 0 continuous, 6064 integer (6064 binary) Root relaxation: objective 0.000000e+00, 248 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 (248 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:46 2012 Optimize a model with 3150 rows, 3670 columns and 12474 nonzeros Presolve removed 27 rows and 567 columns Presolve time: 0.02s Presolved: 3123 rows, 3103 columns, 11907 nonzeros Variable types: 0 continuous, 3103 integer (3103 binary) Root relaxation: objective 0.000000e+00, 248 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 (248 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:46 2012 Optimize a model with 1588 rows, 1822 columns and 5940 nonzeros Presolve removed 27 rows and 270 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 16:22:46 2012 Optimize a model with 878 rows, 982 columns and 2970 nonzeros Presolve removed 27 rows and 135 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, 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 (226 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 16:22:46 2012 Optimize a model with 452 rows, 478 columns and 1188 nonzeros Presolve removed 180 rows and 213 columns Presolve time: 0.00s Presolved: 272 rows, 265 columns, 816 nonzeros Variable types: 0 continuous, 265 integer (265 binary) Root relaxation: objective 0.000000e+00, 144 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 0 116 - 0.00000 - - 0s Explored 0 nodes (450 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 16:22:46 2012 Optimize a model with 594 rows, 646 columns and 1782 nonzeros Presolve removed 27 rows and 81 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, 216 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 (216 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