current bounds on the number of colors: 0 -- 224 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:37 2012 Optimize a model with 32144 rows, 25373 columns and 120848 nonzeros Presolve removed 21 rows and 2352 columns Presolve time: 0.15s Presolved: 32123 rows, 23021 columns, 118496 nonzeros Variable types: 0 continuous, 23021 integer (23021 binary) Root relaxation: objective 0.000000e+00, 397 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 (397 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 -- 112 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:38 2012 Optimize a model with 16184 rows, 12829 columns and 60424 nonzeros Presolve removed 21 rows and 1176 columns Presolve time: 0.12s Presolved: 16163 rows, 11653 columns, 59248 nonzeros Variable types: 0 continuous, 11653 integer (11653 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:38 2012 Optimize a model with 8204 rows, 6557 columns and 30212 nonzeros Presolve removed 21 rows and 588 columns Presolve time: 0.05s Presolved: 8183 rows, 5969 columns, 29624 nonzeros Variable types: 0 continuous, 5969 integer (5969 binary) Root relaxation: objective 0.000000e+00, 393 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 (393 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 16:37:38 2012 Optimize a model with 4214 rows, 3421 columns and 15106 nonzeros Presolve removed 21 rows and 294 columns Presolve time: 0.02s Presolved: 4193 rows, 3127 columns, 14812 nonzeros Variable types: 0 continuous, 3127 integer (3127 binary) Root relaxation: objective 0.000000e+00, 416 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 (416 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 16:37:38 2012 Optimize a model with 2219 rows, 1853 columns and 7553 nonzeros Presolve removed 21 rows and 147 columns Presolve time: 0.01s Presolved: 2198 rows, 1706 columns, 7406 nonzeros Variable types: 0 continuous, 1706 integer (1706 binary) Root relaxation: objective 0.000000e+00, 388 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 (388 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 16:37:38 2012 Optimize a model with 1079 rows, 957 columns and 3237 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.01s Presolved: 1058 rows, 894 columns, 3174 nonzeros Variable types: 0 continuous, 894 integer (894 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 (632 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 16:37:38 2012 Optimize a model with 509 rows, 509 columns and 1079 nonzeros Presolve removed 509 rows and 509 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 16:37:38 2012 Optimize a model with 794 rows, 733 columns and 2158 nonzeros Presolve removed 226 rows and 248 columns Presolve time: 0.00s Presolved: 568 rows, 485 columns, 1704 nonzeros Variable types: 0 continuous, 485 integer (485 binary) Root relaxation: objective 0.000000e+00, 235 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 (760 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