current bounds on the number of colors: 0 -- 133 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:45 2012 Optimize a model with 6601 rows, 8876 columns and 28182 nonzeros Presolve removed 26 rows and 1716 columns Presolve time: 0.08s Presolved: 6575 rows, 7160 columns, 26466 nonzeros Variable types: 0 continuous, 7160 integer (7160 binary) Root relaxation: objective 0.000000e+00, 191 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 (274 simplex iterations) in 0.10 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 -- 66 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:45 2012 Optimize a model with 3367 rows, 4487 columns and 14091 nonzeros Presolve removed 26 rows and 858 columns Presolve time: 0.03s Presolved: 3341 rows, 3629 columns, 13233 nonzeros Variable types: 0 continuous, 3629 integer (3629 binary) Root relaxation: objective 0.000000e+00, 183 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 (183 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 -- 33 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:45 2012 Optimize a model with 1701 rows, 2226 columns and 6832 nonzeros Presolve removed 26 rows and 416 columns Presolve time: 0.01s Presolved: 1675 rows, 1810 columns, 6416 nonzeros Variable types: 0 continuous, 1810 integer (1810 binary) Root relaxation: objective 0.000000e+00, 187 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 (187 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:45 2012 Optimize a model with 917 rows, 1162 columns and 3416 nonzeros Presolve removed 26 rows and 208 columns Presolve time: 0.00s Presolved: 891 rows, 954 columns, 3208 nonzeros Variable types: 0 continuous, 954 integer (954 binary) Root relaxation: objective 0.000000e+00, 171 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 (171 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:45 2012 Optimize a model with 525 rows, 630 columns and 1708 nonzeros Presolve removed 26 rows and 104 columns Presolve time: 0.00s Presolved: 499 rows, 526 columns, 1604 nonzeros Variable types: 0 continuous, 526 integer (526 binary) Root relaxation: objective 0.000000e+00, 156 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 (156 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:45 2012 Optimize a model with 329 rows, 364 columns and 854 nonzeros Presolve removed 147 rows and 180 columns Presolve time: 0.00s Presolved: 182 rows, 184 columns, 546 nonzeros Variable types: 0 continuous, 184 integer (184 binary) Root relaxation: objective 0.000000e+00, 97 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 70 - 0.00000 - - 0s Explored 0 nodes (277 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:45 2012 Optimize a model with 427 rows, 497 columns and 1281 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 401 rows, 419 columns, 1203 nonzeros Variable types: 0 continuous, 419 integer (419 binary) Root relaxation: objective 0.000000e+00, 165 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 (217 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