current bounds on the number of colors: 0 -- 230 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:04 2012 Optimize a model with 30360 rows, 26712 columns and 116840 nonzeros Presolve removed 16 rows and 1840 columns Presolve time: 0.15s Presolved: 30344 rows, 24872 columns, 115000 nonzeros Variable types: 0 continuous, 24872 integer (24872 binary) Root relaxation: objective 0.000000e+00, 395 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 (395 simplex iterations) in 0.18 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 -- 115 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:05 2012 Optimize a model with 15164 rows, 13372 columns and 57912 nonzeros Presolve removed 16 rows and 912 columns Presolve time: 0.12s Presolved: 15148 rows, 12460 columns, 57000 nonzeros Variable types: 0 continuous, 12460 integer (12460 binary) Root relaxation: objective 0.000000e+00, 395 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 (395 simplex iterations) in 0.13 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:05 2012 Optimize a model with 7566 rows, 6702 columns and 28448 nonzeros Presolve removed 16 rows and 448 columns Presolve time: 0.05s Presolved: 7550 rows, 6254 columns, 28000 nonzeros Variable types: 0 continuous, 6254 integer (6254 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 simplex iterations) in 0.06 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:05 2012 Optimize a model with 3898 rows, 3482 columns and 14224 nonzeros Presolve removed 16 rows and 224 columns Presolve time: 0.02s Presolved: 3882 rows, 3258 columns, 14000 nonzeros Variable types: 0 continuous, 3258 integer (3258 binary) Root relaxation: objective 0.000000e+00, 395 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 (598 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:05 2012 Optimize a model with 2064 rows, 1872 columns and 7112 nonzeros Presolve removed 16 rows and 112 columns Presolve time: 0.01s Presolved: 2048 rows, 1760 columns, 7000 nonzeros Variable types: 0 continuous, 1760 integer (1760 binary) Root relaxation: objective 0.000000e+00, 386 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 (386 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 16:40:05 2012 Optimize a model with 1016 rows, 952 columns and 3048 nonzeros Presolve removed 16 rows and 48 columns Presolve time: 0.00s Presolved: 1000 rows, 904 columns, 3000 nonzeros Variable types: 0 continuous, 904 integer (904 binary) Root relaxation: objective 0.000000e+00, 406 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 (406 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 16:40:05 2012 Optimize a model with 492 rows, 492 columns and 1016 nonzeros Presolve removed 492 rows and 492 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 16:40:05 2012 Optimize a model with 754 rows, 722 columns and 2032 nonzeros Presolve removed 234 rows and 252 columns Presolve time: 0.00s Presolved: 520 rows, 470 columns, 1560 nonzeros Variable types: 0 continuous, 470 integer (470 binary) Root relaxation: objective 0.000000e+00, 241 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 0 197 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (766 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