current bounds on the number of colors: 0 -- 165 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:16 2012 Optimize a model with 11399 rows, 13667 columns and 47232 nonzeros Presolve removed 28 rows and 2296 columns Presolve time: 0.12s Presolved: 11371 rows, 11371 columns, 44936 nonzeros Variable types: 0 continuous, 11371 integer (11371 binary) Root relaxation: objective 0.000000e+00, 240 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 (240 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 -- 82 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:16 2012 Optimize a model with 5782 rows, 6902 columns and 23616 nonzeros Presolve removed 28 rows and 1148 columns Presolve time: 0.05s Presolved: 5754 rows, 5754 columns, 22468 nonzeros Variable types: 0 continuous, 5754 integer (5754 binary) Root relaxation: objective 0.000000e+00, 243 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 (243 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 -- 41 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:16 2012 Optimize a model with 2905 rows, 3437 columns and 11520 nonzeros Presolve removed 28 rows and 560 columns Presolve time: 0.02s Presolved: 2877 rows, 2877 columns, 10960 nonzeros Variable types: 0 continuous, 2877 integer (2877 binary) Root relaxation: objective 0.000000e+00, 240 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 (240 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:16 2012 Optimize a model with 1535 rows, 1787 columns and 5760 nonzeros Presolve removed 28 rows and 280 columns Presolve time: 0.01s Presolved: 1507 rows, 1507 columns, 5480 nonzeros Variable types: 0 continuous, 1507 integer (1507 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 (324 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:16 2012 Optimize a model with 850 rows, 962 columns and 2880 nonzeros Presolve removed 28 rows and 140 columns Presolve time: 0.00s Presolved: 822 rows, 822 columns, 2740 nonzeros Variable types: 0 continuous, 822 integer (822 binary) Root relaxation: objective 0.000000e+00, 217 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 (217 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:16 2012 Optimize a model with 439 rows, 467 columns and 1152 nonzeros Presolve removed 177 rows and 211 columns Presolve time: 0.00s Presolved: 262 rows, 256 columns, 786 nonzeros Variable types: 0 continuous, 256 integer (256 binary) Root relaxation: objective 0.000000e+00, 130 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 0 100 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (416 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:16 2012 Optimize a model with 576 rows, 632 columns and 1728 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 548 rows, 548 columns, 1644 nonzeros Variable types: 0 continuous, 548 integer (548 binary) Root relaxation: objective 0.000000e+00, 212 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 (212 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