current bounds on the number of colors: 0 -- 149 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:50 2012 Optimize a model with 9917 rows, 11158 columns and 40330 nonzeros Presolve removed 23 rows and 1702 columns Presolve time: 0.11s Presolved: 9894 rows, 9456 columns, 38628 nonzeros Variable types: 0 continuous, 9456 integer (9456 binary) Root relaxation: objective 0.000000e+00, 232 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 (232 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 -- 74 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:50 2012 Optimize a model with 5033 rows, 5645 columns and 20165 nonzeros Presolve removed 23 rows and 851 columns Presolve time: 0.04s Presolved: 5010 rows, 4794 columns, 19314 nonzeros Variable types: 0 continuous, 4794 integer (4794 binary) Root relaxation: objective 0.000000e+00, 229 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 (229 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 -- 37 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:50 2012 Optimize a model with 2525 rows, 2814 columns and 9810 nonzeros Presolve removed 23 rows and 414 columns Presolve time: 0.01s Presolved: 2502 rows, 2400 columns, 9396 nonzeros Variable types: 0 continuous, 2400 integer (2400 binary) Root relaxation: objective 0.000000e+00, 230 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 (230 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:50 2012 Optimize a model with 1337 rows, 1473 columns and 4905 nonzeros Presolve removed 23 rows and 207 columns Presolve time: 0.01s Presolved: 1314 rows, 1266 columns, 4698 nonzeros Variable types: 0 continuous, 1266 integer (1266 binary) Root relaxation: objective 0.000000e+00, 222 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 (222 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:50 2012 Optimize a model with 677 rows, 728 columns and 2180 nonzeros Presolve removed 23 rows and 92 columns Presolve time: 0.00s Presolved: 654 rows, 636 columns, 2088 nonzeros Variable types: 0 continuous, 636 integer (636 binary) Root relaxation: objective 0.000000e+00, 192 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 (192 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 16:19:50 2012 Optimize a model with 413 rows, 430 columns and 1090 nonzeros Presolve removed 151 rows and 175 columns Presolve time: 0.00s Presolved: 262 rows, 255 columns, 786 nonzeros Variable types: 0 continuous, 255 integer (255 binary) Root relaxation: objective 0.000000e+00, 137 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 0 110 - 0.00000 - - 0s Explored 0 nodes (455 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 16:19:50 2012 Optimize a model with 545 rows, 579 columns and 1635 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 522 rows, 510 columns, 1566 nonzeros Variable types: 0 continuous, 510 integer (510 binary) Root relaxation: objective 0.000000e+00, 206 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 (206 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