current bounds on the number of colors: 0 -- 210 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:59 2012 Optimize a model with 24255 rows, 22279 columns and 94185 nonzeros Presolve removed 21 rows and 2205 columns Presolve time: 0.14s Presolved: 24234 rows, 20074 columns, 91980 nonzeros Variable types: 0 continuous, 20074 integer (20074 binary) Root relaxation: objective 0.000000e+00, 353 iterations, 0.01 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 (353 simplex iterations) in 0.17 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 -- 105 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:59 2012 Optimize a model with 12118 rows, 11149 columns and 46644 nonzeros Presolve removed 21 rows and 1092 columns Presolve time: 0.11s Presolved: 12097 rows, 10057 columns, 45552 nonzeros Variable types: 0 continuous, 10057 integer (10057 binary) Root relaxation: objective 0.000000e+00, 354 iterations, 0.01 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 (354 simplex iterations) in 0.12 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:00 2012 Optimize a model with 6164 rows, 5689 columns and 23322 nonzeros Presolve removed 21 rows and 546 columns Presolve time: 0.04s Presolved: 6143 rows, 5143 columns, 22776 nonzeros Variable types: 0 continuous, 5143 integer (5143 binary) Root relaxation: objective 0.000000e+00, 350 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 (350 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:00 2012 Optimize a model with 3187 rows, 2959 columns and 11661 nonzeros Presolve removed 21 rows and 273 columns Presolve time: 0.01s Presolved: 3166 rows, 2686 columns, 11388 nonzeros Variable types: 0 continuous, 2686 integer (2686 binary) Root relaxation: objective 0.000000e+00, 352 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 (352 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:00 2012 Optimize a model with 1584 rows, 1489 columns and 5382 nonzeros Presolve removed 21 rows and 126 columns Presolve time: 0.01s Presolved: 1563 rows, 1363 columns, 5256 nonzeros Variable types: 0 continuous, 1363 integer (1363 binary) Root relaxation: objective 0.000000e+00, 338 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 (338 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:00 2012 Optimize a model with 897 rows, 859 columns and 2691 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 876 rows, 796 columns, 2628 nonzeros Variable types: 0 continuous, 796 integer (796 binary) Root relaxation: objective 0.000000e+00, 343 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 (469 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:00 2012 Optimize a model with 439 rows, 439 columns and 897 nonzeros Presolve removed 439 rows and 439 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 16:33:00 2012 Optimize a model with 668 rows, 649 columns and 1794 nonzeros Presolve removed 214 rows and 237 columns Presolve time: 0.00s Presolved: 454 rows, 412 columns, 1362 nonzeros Variable types: 0 continuous, 412 integer (412 binary) Root relaxation: objective 0.000000e+00, 213 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 0 182 - 0.00000 - - 0s Explored 0 nodes (684 simplex iterations) in 0.01 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