current bounds on the number of colors: 0 -- 62 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:19 2012 Optimize a model with 2604 rows, 2004 columns and 9548 nonzeros Presolve removed 7 rows and 217 columns Presolve time: 0.02s Presolved: 2597 rows, 1787 columns, 9331 nonzeros Variable types: 0 continuous, 1787 integer (1787 binary) Root relaxation: objective 0.000000e+00, 112 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 (112 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 -- 31 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:19 2012 Optimize a model with 1292 rows, 1012 columns and 4620 nonzeros Presolve removed 7 rows and 105 columns Presolve time: 0.01s Presolved: 1285 rows, 907 columns, 4515 nonzeros Variable types: 0 continuous, 907 integer (907 binary) Root relaxation: objective 0.000000e+00, 113 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 (178 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 -- 15 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:19 2012 Optimize a model with 636 rows, 516 columns and 2156 nonzeros Presolve removed 7 rows and 49 columns Presolve time: 0.00s Presolved: 629 rows, 467 columns, 2107 nonzeros Variable types: 0 continuous, 467 integer (467 binary) Root relaxation: objective 0.000000e+00, 124 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 (194 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 -- 7 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:19 2012 Optimize a model with 308 rows, 268 columns and 924 nonzeros Presolve removed 7 rows and 21 columns Presolve time: 0.00s Presolved: 301 rows, 247 columns, 903 nonzeros Variable types: 0 continuous, 247 integer (247 binary) Root relaxation: objective 0.000000e+00, 122 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 (208 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 Fri Dec 14 18:20:19 2012 Optimize a model with 144 rows, 144 columns and 308 nonzeros Presolve removed 144 rows and 144 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 Fri Dec 14 18:20:19 2012 Optimize a model with 226 rows, 206 columns and 616 nonzeros Presolve removed 62 rows and 69 columns Presolve time: 0.00s Presolved: 164 rows, 137 columns, 492 nonzeros Variable types: 0 continuous, 137 integer (137 binary) Root relaxation: objective 0.000000e+00, 61 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 55 - 0.00000 - - 0s Explored 0 nodes (216 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 - optimal solution found: number of colors: 3