current bounds on the number of colors: 0 -- 191 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:35 2012 Optimize a model with 17861 rows, 18331 columns and 71155 nonzeros Presolve removed 26 rows and 2470 columns Presolve time: 0.12s Presolved: 17835 rows, 15861 columns, 68685 nonzeros Variable types: 0 continuous, 15861 integer (15861 binary) Root relaxation: objective 0.000000e+00, 307 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 (307 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 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:35 2012 Optimize a model with 8933 rows, 9163 columns and 35203 nonzeros Presolve removed 26 rows and 1222 columns Presolve time: 0.08s Presolved: 8907 rows, 7941 columns, 33981 nonzeros Variable types: 0 continuous, 7941 integer (7941 binary) Root relaxation: objective 0.000000e+00, 305 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 (305 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:35 2012 Optimize a model with 4469 rows, 4579 columns and 17227 nonzeros Presolve removed 26 rows and 598 columns Presolve time: 0.03s Presolved: 4443 rows, 3981 columns, 16629 nonzeros Variable types: 0 continuous, 3981 integer (3981 binary) Root relaxation: objective 0.000000e+00, 309 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 (309 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:35 2012 Optimize a model with 2237 rows, 2287 columns and 8239 nonzeros Presolve removed 26 rows and 286 columns Presolve time: 0.01s Presolved: 2211 rows, 2001 columns, 7953 nonzeros Variable types: 0 continuous, 2001 integer (2001 binary) Root relaxation: objective 0.000000e+00, 293 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 (293 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 Sat Dec 15 16:27:35 2012 Optimize a model with 1121 rows, 1141 columns and 3745 nonzeros Presolve removed 26 rows and 130 columns Presolve time: 0.00s Presolved: 1095 rows, 1011 columns, 3615 nonzeros Variable types: 0 continuous, 1011 integer (1011 binary) Root relaxation: objective 0.000000e+00, 274 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 (274 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 Sat Dec 15 16:27:35 2012 Optimize a model with 563 rows, 568 columns and 1498 nonzeros Presolve removed 199 rows and 229 columns Presolve time: 0.00s Presolved: 364 rows, 339 columns, 1092 nonzeros Variable types: 0 continuous, 339 integer (339 binary) Root relaxation: objective 0.000000e+00, 178 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 0 148 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (554 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:35 2012 Optimize a model with 749 rows, 759 columns and 2247 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 723 rows, 681 columns, 2169 nonzeros Variable types: 0 continuous, 681 integer (681 binary) Root relaxation: objective 0.000000e+00, 277 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 (277 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