current bounds on the number of colors: 0 -- 133 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:50 2012 Optimize a model with 6139 rows, 8869 columns and 26796 nonzeros Presolve removed 29 rows and 1914 columns Presolve time: 0.09s Presolved: 6110 rows, 6955 columns, 24882 nonzeros Variable types: 0 continuous, 6955 integer (6955 binary) Root relaxation: objective 0.000000e+00, 181 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 (181 simplex iterations) in 0.09 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 -- 66 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:50 2012 Optimize a model with 3136 rows, 4480 columns and 13398 nonzeros Presolve removed 29 rows and 957 columns Presolve time: 0.03s Presolved: 3107 rows, 3523 columns, 12441 nonzeros Variable types: 0 continuous, 3523 integer (3523 binary) Root relaxation: objective 0.000000e+00, 181 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 (181 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 -- 33 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:50 2012 Optimize a model with 1589 rows, 2219 columns and 6496 nonzeros Presolve removed 29 rows and 464 columns Presolve time: 0.01s Presolved: 1560 rows, 1755 columns, 6032 nonzeros Variable types: 0 continuous, 1755 integer (1755 binary) Root relaxation: objective 0.000000e+00, 182 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 (257 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:50 2012 Optimize a model with 861 rows, 1155 columns and 3248 nonzeros Presolve removed 29 rows and 232 columns Presolve time: 0.00s Presolved: 832 rows, 923 columns, 3016 nonzeros Variable types: 0 continuous, 923 integer (923 binary) Root relaxation: objective 0.000000e+00, 166 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 (166 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:50 2012 Optimize a model with 497 rows, 623 columns and 1624 nonzeros Presolve removed 29 rows and 116 columns Presolve time: 0.00s Presolved: 468 rows, 507 columns, 1508 nonzeros Variable types: 0 continuous, 507 integer (507 binary) Root relaxation: objective 0.000000e+00, 151 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 (151 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:50 2012 Optimize a model with 315 rows, 357 columns and 812 nonzeros Presolve removed 143 rows and 177 columns Presolve time: 0.00s Presolved: 172 rows, 180 columns, 516 nonzeros Variable types: 0 continuous, 180 integer (180 binary) Root relaxation: objective 0.000000e+00, 89 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 55 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (259 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:50 2012 Optimize a model with 406 rows, 490 columns and 1218 nonzeros Presolve removed 29 rows and 87 columns Presolve time: 0.00s Presolved: 377 rows, 403 columns, 1131 nonzeros Variable types: 0 continuous, 403 integer (403 binary) Root relaxation: objective 0.000000e+00, 152 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 (152 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