current bounds on the number of colors: 0 -- 90 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:47 2012 Optimize a model with 8595 rows, 4239 columns and 29565 nonzeros Presolve removed 1 rows and 45 columns Presolve time: 0.06s Presolved: 8594 rows, 4194 columns, 29520 nonzeros Variable types: 0 continuous, 4194 integer (4194 binary) Root relaxation: objective 0.000000e+00, 217 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 (217 simplex iterations) in 0.07 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 -- 45 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:47 2012 Optimize a model with 4248 rows, 2169 columns and 14454 nonzeros Presolve removed 1 rows and 22 columns Presolve time: 0.02s Presolved: 4247 rows, 2147 columns, 14432 nonzeros Variable types: 0 continuous, 2147 integer (2147 binary) Root relaxation: objective 0.000000e+00, 214 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 (348 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 -- 22 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:47 2012 Optimize a model with 2169 rows, 1179 columns and 7227 nonzeros Presolve removed 1 rows and 11 columns Presolve time: 0.01s Presolved: 2168 rows, 1168 columns, 7216 nonzeros Variable types: 0 continuous, 1168 integer (1168 binary) Root relaxation: objective 0.000000e+00, 193 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 (325 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 -- 11 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:47 2012 Optimize a model with 1035 rows, 639 columns and 3285 nonzeros Presolve removed 1 rows and 5 columns Presolve time: 0.00s Presolved: 1034 rows, 634 columns, 3280 nonzeros Variable types: 0 continuous, 634 integer (634 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 (363 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:47 2012 Optimize a model with 468 rows, 369 columns and 1314 nonzeros Presolve removed 90 rows and 91 columns Presolve time: 0.00s Presolved: 378 rows, 278 columns, 1134 nonzeros Variable types: 0 continuous, 278 integer (278 binary) Root relaxation: objective 0.000000e+00, 100 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 89 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (371 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 Fri Dec 14 18:22:47 2012 Optimize a model with 657 rows, 459 columns and 1971 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 656 rows, 456 columns, 1968 nonzeros Variable types: 0 continuous, 456 integer (456 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 0.00000 0 96 - 0.00000 - - 0s 0 0 0.00000 0 118 - 0.00000 - - 0s 0 0 0.00000 0 152 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 143 - 0.00000 - - 0s 0 0 0.00000 0 147 - 0.00000 - - 0s 0 0 0.00000 0 150 - 0.00000 - - 0s 0 0 0.00000 0 161 - 0.00000 - - 0s 0 0 0.00000 0 111 - 0.00000 - - 0s 0 2 0.00000 0 111 - 0.00000 - - 0s * 23 3 7 0.0000000 0.00000 0.0% 43.6 0s Cutting planes: Zero half: 3 Explored 24 nodes (6086 simplex iterations) in 0.25 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