current bounds on the number of colors: 0 -- 102 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:17 2012 Optimize a model with 2907 rows, 5257 columns and 13617 nonzeros Presolve removed 29 rows and 1479 columns Presolve time: 0.04s Presolved: 2878 rows, 3778 columns, 12138 nonzeros Variable types: 0 continuous, 3778 integer (3778 binary) Root relaxation: objective 0.000000e+00, 118 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 (118 simplex iterations) in 0.04 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:17 2012 Optimize a model with 1477 rows, 2605 columns and 6675 nonzeros Presolve removed 29 rows and 725 columns Presolve time: 0.01s Presolved: 1448 rows, 1880 columns, 5950 nonzeros Variable types: 0 continuous, 1880 integer (1880 binary) Root relaxation: objective 0.000000e+00, 118 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 (118 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:17 2012 Optimize a model with 762 rows, 1279 columns and 3204 nonzeros Presolve removed 29 rows and 348 columns Presolve time: 0.00s Presolved: 733 rows, 931 columns, 2856 nonzeros Variable types: 0 continuous, 931 integer (931 binary) Root relaxation: objective 0.000000e+00, 117 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 (117 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:17 2012 Optimize a model with 432 rows, 667 columns and 1602 nonzeros Presolve removed 29 rows and 174 columns Presolve time: 0.00s Presolved: 403 rows, 493 columns, 1428 nonzeros Variable types: 0 continuous, 493 integer (493 binary) Root relaxation: objective 0.000000e+00, 107 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 (107 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:17 2012 Optimize a model with 267 rows, 361 columns and 801 nonzeros Presolve removed 29 rows and 87 columns Presolve time: 0.00s Presolved: 238 rows, 274 columns, 714 nonzeros Variable types: 0 continuous, 274 integer (274 binary) Root relaxation: objective 0.000000e+00, 102 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 (102 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 16:15:17 2012 Optimize a model with 157 rows, 157 columns and 267 nonzeros Presolve removed 157 rows and 157 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 16:15:17 2012 Optimize a model with 212 rows, 259 columns and 534 nonzeros Presolve removed 118 rows and 155 columns Presolve time: 0.00s Presolved: 94 rows, 104 columns, 282 nonzeros Variable types: 0 continuous, 104 integer (104 binary) Root relaxation: objective 0.000000e+00, 40 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 (40 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