current bounds on the number of colors: 0 -- 243 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:23 2012 Optimize a model with 37269 rows, 29709 columns and 140481 nonzeros Presolve removed 24 rows and 2904 columns Presolve time: 0.18s Presolved: 37245 rows, 26805 columns, 137577 nonzeros Variable types: 0 continuous, 26805 integer (26805 binary) Root relaxation: objective 0.000000e+00, 437 iterations, 0.02 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 (437 simplex iterations) in 0.22 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 -- 121 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:24 2012 Optimize a model with 18603 rows, 14886 columns and 69660 nonzeros Presolve removed 24 rows and 1440 columns Presolve time: 0.13s Presolved: 18579 rows, 13446 columns, 68220 nonzeros Variable types: 0 continuous, 13446 integer (13446 binary) Root relaxation: objective 0.000000e+00, 437 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 (437 simplex iterations) in 0.14 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:25 2012 Optimize a model with 9423 rows, 7596 columns and 34830 nonzeros Presolve removed 24 rows and 720 columns Presolve time: 0.06s Presolved: 9399 rows, 6876 columns, 34110 nonzeros Variable types: 0 continuous, 6876 integer (6876 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 simplex iterations) in 0.07 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:25 2012 Optimize a model with 4833 rows, 3951 columns and 17415 nonzeros Presolve removed 24 rows and 360 columns Presolve time: 0.02s Presolved: 4809 rows, 3591 columns, 17055 nonzeros Variable types: 0 continuous, 3591 integer (3591 binary) Root relaxation: objective 0.000000e+00, 442 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 (728 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:25 2012 Optimize a model with 2385 rows, 2007 columns and 8127 nonzeros Presolve removed 24 rows and 168 columns Presolve time: 0.01s Presolved: 2361 rows, 1839 columns, 7959 nonzeros Variable types: 0 continuous, 1839 integer (1839 binary) Root relaxation: objective 0.000000e+00, 408 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 (590 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:25 2012 Optimize a model with 1161 rows, 1035 columns and 3483 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 1137 rows, 963 columns, 3411 nonzeros Variable types: 0 continuous, 963 integer (963 binary) Root relaxation: objective 0.000000e+00, 499 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 (694 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 16:45:25 2012 Optimize a model with 549 rows, 549 columns and 1161 nonzeros Presolve removed 549 rows and 549 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 16:45:25 2012 Optimize a model with 855 rows, 792 columns and 2322 nonzeros Presolve removed 253 rows and 282 columns Presolve time: 0.00s Presolved: 602 rows, 510 columns, 1806 nonzeros Variable types: 0 continuous, 510 integer (510 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 0.00000 0 209 - 0.00000 - - 0s Explored 0 nodes (795 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