current bounds on the number of colors: 0 -- 58 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:08 2012 Optimize a model with 3277 rows, 1793 columns and 11339 nonzeros Presolve removed 1 rows and 29 columns Presolve time: 0.02s Presolved: 3276 rows, 1764 columns, 11310 nonzeros Variable types: 0 continuous, 1764 integer (1764 binary) Root relaxation: objective 0.000000e+00, 132 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 (132 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 -- 29 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:20:08 2012 Optimize a model with 1612 rows, 923 columns and 5474 nonzeros Presolve removed 1 rows and 14 columns Presolve time: 0.01s Presolved: 1611 rows, 909 columns, 5460 nonzeros Variable types: 0 continuous, 909 integer (909 binary) Root relaxation: objective 0.000000e+00, 121 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 (196 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 Fri Dec 14 18:20:08 2012 Optimize a model with 835 rows, 517 columns and 2737 nonzeros Presolve removed 1 rows and 7 columns Presolve time: 0.00s Presolved: 834 rows, 510 columns, 2730 nonzeros Variable types: 0 continuous, 510 integer (510 binary) Root relaxation: objective 0.000000e+00, 128 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 (203 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 Fri Dec 14 18:20:08 2012 Optimize a model with 391 rows, 285 columns and 1173 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 390 rows, 282 columns, 1170 nonzeros Variable types: 0 continuous, 282 integer (282 binary) Root relaxation: objective 0.000000e+00, 137 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 96 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (399 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 Fri Dec 14 18:20:08 2012 Optimize a model with 169 rows, 169 columns and 391 nonzeros Presolve removed 169 rows and 169 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 Fri Dec 14 18:20:08 2012 Optimize a model with 280 rows, 227 columns and 782 nonzeros Presolve removed 58 rows and 59 columns Presolve time: 0.00s Presolved: 222 rows, 168 columns, 666 nonzeros Variable types: 0 continuous, 168 integer (168 binary) Root relaxation: objective 0.000000e+00, 66 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 57 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (240 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 - optimal solution found: number of colors: 3