current bounds on the number of colors: 0 -- 241 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:44 2012 Optimize a model with 37081 rows, 29227 columns and 139440 nonzeros Presolve removed 21 rows and 2520 columns Presolve time: 0.18s Presolved: 37060 rows, 26707 columns, 136920 nonzeros Variable types: 0 continuous, 26707 integer (26707 binary) Root relaxation: objective 0.000000e+00, 431 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 (431 simplex iterations) in 0.21 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 -- 120 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:44 2012 Optimize a model with 18661 rows, 14767 columns and 69720 nonzeros Presolve removed 21 rows and 1260 columns Presolve time: 0.13s Presolved: 18640 rows, 13507 columns, 68460 nonzeros Variable types: 0 continuous, 13507 integer (13507 binary) Root relaxation: objective 0.000000e+00, 432 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 (432 simplex iterations) in 0.16 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 16:44:45 2012 Optimize a model with 9451 rows, 7537 columns and 34860 nonzeros Presolve removed 21 rows and 630 columns Presolve time: 0.06s Presolved: 9430 rows, 6907 columns, 34230 nonzeros Variable types: 0 continuous, 6907 integer (6907 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 16:44:45 2012 Optimize a model with 4846 rows, 3922 columns and 17430 nonzeros Presolve removed 21 rows and 315 columns Presolve time: 0.02s Presolved: 4825 rows, 3607 columns, 17115 nonzeros Variable types: 0 continuous, 3607 integer (3607 binary) Root relaxation: objective 0.000000e+00, 443 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 (443 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:45 2012 Optimize a model with 2390 rows, 1994 columns and 8134 nonzeros Presolve removed 21 rows and 147 columns Presolve time: 0.01s Presolved: 2369 rows, 1847 columns, 7987 nonzeros Variable types: 0 continuous, 1847 integer (1847 binary) Root relaxation: objective 0.000000e+00, 418 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 (418 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 16:44:45 2012 Optimize a model with 1162 rows, 1030 columns and 3486 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 1141 rows, 967 columns, 3423 nonzeros Variable types: 0 continuous, 967 integer (967 binary) Root relaxation: objective 0.000000e+00, 473 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 (695 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 16:44:45 2012 Optimize a model with 548 rows, 548 columns and 1162 nonzeros Presolve removed 548 rows and 548 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 16:44:45 2012 Optimize a model with 855 rows, 789 columns and 2324 nonzeros Presolve removed 245 rows and 268 columns Presolve time: 0.00s Presolved: 610 rows, 521 columns, 1830 nonzeros Variable types: 0 continuous, 521 integer (521 binary) Root relaxation: objective 0.000000e+00, 255 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 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (853 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