current bounds on the number of colors: 0 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:20 2012 Optimize a model with 4003 rows, 6853 columns and 18444 nonzeros Presolve removed 36 rows and 2088 columns Presolve time: 0.05s Presolved: 3967 rows, 4765 columns, 16356 nonzeros Variable types: 0 continuous, 4765 integer (4765 binary) Root relaxation: objective 0.000000e+00, 135 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 (135 simplex iterations) in 0.05 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:20 2012 Optimize a model with 2060 rows, 3460 columns and 9222 nonzeros Presolve removed 36 rows and 1044 columns Presolve time: 0.02s Presolved: 2024 rows, 2416 columns, 8178 nonzeros Variable types: 0 continuous, 2416 integer (2416 binary) Root relaxation: objective 0.000000e+00, 135 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 (135 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:20 2012 Optimize a model with 1055 rows, 1705 columns and 4452 nonzeros Presolve removed 36 rows and 504 columns Presolve time: 0.01s Presolved: 1019 rows, 1201 columns, 3948 nonzeros Variable types: 0 continuous, 1201 integer (1201 binary) Root relaxation: objective 0.000000e+00, 139 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 (139 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:20 2012 Optimize a model with 586 rows, 886 columns and 2226 nonzeros Presolve removed 36 rows and 252 columns Presolve time: 0.00s Presolved: 550 rows, 634 columns, 1974 nonzeros Variable types: 0 continuous, 634 integer (634 binary) Root relaxation: objective 0.000000e+00, 132 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 (132 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 Sat Dec 15 16:16:20 2012 Optimize a model with 318 rows, 418 columns and 954 nonzeros Presolve removed 36 rows and 108 columns Presolve time: 0.00s Presolved: 282 rows, 310 columns, 846 nonzeros Variable types: 0 continuous, 310 integer (310 binary) Root relaxation: objective 0.000000e+00, 105 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 (105 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 16:16:20 2012 Optimize a model with 184 rows, 184 columns and 318 nonzeros Presolve removed 184 rows and 184 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 16:16:20 2012 Optimize a model with 251 rows, 301 columns and 636 nonzeros Presolve removed 133 rows and 177 columns Presolve time: 0.00s Presolved: 118 rows, 124 columns, 354 nonzeros Variable types: 0 continuous, 124 integer (124 binary) Root relaxation: objective 0.000000e+00, 55 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 (55 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: 2