current bounds on the number of colors: 0 -- 166 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:25 2012 Optimize a model with 12948 rows, 13932 columns and 52124 nonzeros Presolve removed 24 rows and 1992 columns Presolve time: 0.12s Presolved: 12924 rows, 11940 columns, 50132 nonzeros Variable types: 0 continuous, 11940 integer (11940 binary) Root relaxation: objective 0.000000e+00, 252 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 (252 simplex iterations) in 0.14 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 -- 83 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:26 2012 Optimize a model with 6480 rows, 6960 columns and 25748 nonzeros Presolve removed 24 rows and 984 columns Presolve time: 0.05s Presolved: 6456 rows, 5976 columns, 24764 nonzeros Variable types: 0 continuous, 5976 integer (5976 binary) Root relaxation: objective 0.000000e+00, 254 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 (254 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 -- 41 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:26 2012 Optimize a model with 3246 rows, 3474 columns and 12560 nonzeros Presolve removed 24 rows and 480 columns Presolve time: 0.02s Presolved: 3222 rows, 2994 columns, 12080 nonzeros Variable types: 0 continuous, 2994 integer (2994 binary) Root relaxation: objective 0.000000e+00, 256 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 (256 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:26 2012 Optimize a model with 1706 rows, 1814 columns and 6280 nonzeros Presolve removed 24 rows and 240 columns Presolve time: 0.01s Presolved: 1682 rows, 1574 columns, 6040 nonzeros Variable types: 0 continuous, 1574 integer (1574 binary) Root relaxation: objective 0.000000e+00, 258 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 (258 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:26 2012 Optimize a model with 936 rows, 984 columns and 3140 nonzeros Presolve removed 24 rows and 120 columns Presolve time: 0.00s Presolved: 912 rows, 864 columns, 3020 nonzeros Variable types: 0 continuous, 864 integer (864 binary) Root relaxation: objective 0.000000e+00, 228 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 (228 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:26 2012 Optimize a model with 474 rows, 486 columns and 1256 nonzeros Presolve removed 178 rows and 208 columns Presolve time: 0.00s Presolved: 296 rows, 278 columns, 888 nonzeros Variable types: 0 continuous, 278 integer (278 binary) Root relaxation: objective 0.000000e+00, 139 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 0 123 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (443 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 Sat Dec 15 16:22:26 2012 Optimize a model with 628 rows, 652 columns and 1884 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 604 rows, 580 columns, 1812 nonzeros Variable types: 0 continuous, 580 integer (580 binary) Root relaxation: objective 0.000000e+00, 243 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 (243 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