current bounds on the number of colors: 0 -- 232 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:47 2012 Optimize a model with 32828 rows, 27193 columns and 124700 nonzeros Presolve removed 17 rows and 1972 columns Presolve time: 0.16s Presolved: 32811 rows, 25221 columns, 122728 nonzeros Variable types: 0 continuous, 25221 integer (25221 binary) Root relaxation: objective 0.000000e+00, 410 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 (410 simplex iterations) in 0.19 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 -- 116 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:47 2012 Optimize a model with 16530 rows, 13737 columns and 62350 nonzeros Presolve removed 17 rows and 986 columns Presolve time: 0.12s Presolved: 16513 rows, 12751 columns, 61364 nonzeros Variable types: 0 continuous, 12751 integer (12751 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:48 2012 Optimize a model with 8381 rows, 7009 columns and 31175 nonzeros Presolve removed 17 rows and 493 columns Presolve time: 0.05s Presolved: 8364 rows, 6516 columns, 30682 nonzeros Variable types: 0 continuous, 6516 integer (6516 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:48 2012 Optimize a model with 4166 rows, 3529 columns and 15050 nonzeros Presolve removed 17 rows and 238 columns Presolve time: 0.02s Presolved: 4149 rows, 3291 columns, 14812 nonzeros Variable types: 0 continuous, 3291 integer (3291 binary) Root relaxation: objective 0.000000e+00, 433 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 (433 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:48 2012 Optimize a model with 2199 rows, 1905 columns and 7525 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2182 rows, 1786 columns, 7406 nonzeros Variable types: 0 continuous, 1786 integer (1786 binary) Root relaxation: objective 0.000000e+00, 390 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 (390 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 16:40:48 2012 Optimize a model with 1075 rows, 977 columns and 3225 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.01s Presolved: 1058 rows, 926 columns, 3174 nonzeros Variable types: 0 continuous, 926 integer (926 binary) Root relaxation: objective 0.000000e+00, 446 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 (619 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:48 2012 Optimize a model with 513 rows, 513 columns and 1075 nonzeros Presolve removed 513 rows and 513 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 16:40:48 2012 Optimize a model with 794 rows, 745 columns and 2150 nonzeros Presolve removed 242 rows and 264 columns Presolve time: 0.00s Presolved: 552 rows, 481 columns, 1656 nonzeros Variable types: 0 continuous, 481 integer (481 binary) Root relaxation: objective 0.000000e+00, 225 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 0 201 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (716 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