current bounds on the number of colors: 0 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:45 2012 Optimize a model with 2162 rows, 4277 columns and 10442 nonzeros Presolve removed 29 rows and 1334 columns Presolve time: 0.02s Presolved: 2133 rows, 2943 columns, 9108 nonzeros Variable types: 0 continuous, 2943 integer (2943 binary) Root relaxation: objective 0.000000e+00, 101 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 (101 simplex iterations) in 0.03 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:45 2012 Optimize a model with 1127 rows, 2161 columns and 5221 nonzeros Presolve removed 29 rows and 667 columns Presolve time: 0.01s Presolved: 1098 rows, 1494 columns, 4554 nonzeros Variable types: 0 continuous, 1494 integer (1494 binary) Root relaxation: objective 0.000000e+00, 101 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 (101 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:45 2012 Optimize a model with 587 rows, 1057 columns and 2497 nonzeros Presolve removed 29 rows and 319 columns Presolve time: 0.00s Presolved: 558 rows, 738 columns, 2178 nonzeros Variable types: 0 continuous, 738 integer (738 binary) Root relaxation: objective 0.000000e+00, 101 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 (101 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:45 2012 Optimize a model with 317 rows, 505 columns and 1135 nonzeros Presolve removed 29 rows and 145 columns Presolve time: 0.00s Presolved: 288 rows, 360 columns, 990 nonzeros Variable types: 0 continuous, 360 integer (360 binary) Root relaxation: objective 0.000000e+00, 92 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 (92 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 16:14:45 2012 Optimize a model with 182 rows, 229 columns and 454 nonzeros Presolve removed 112 rows and 151 columns Presolve time: 0.00s Presolved: 70 rows, 78 columns, 210 nonzeros Variable types: 0 continuous, 78 integer (78 binary) Root relaxation: objective 0.000000e+00, 30 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 (30 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 -- 2 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:45 2012 Optimize a model with 137 rows, 137 columns and 227 nonzeros Presolve removed 137 rows and 137 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 - optimal solution found: number of colors: 2