current bounds on the number of colors: 0 -- 163 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:00 2012 Optimize a model with 13123 rows, 13363 columns and 52083 nonzeros Presolve removed 24 rows and 1944 columns Presolve time: 0.12s Presolved: 13099 rows, 11419 columns, 50139 nonzeros Variable types: 0 continuous, 11419 integer (11419 binary) Root relaxation: objective 0.000000e+00, 256 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 (256 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 -- 81 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:00 2012 Optimize a model with 6563 rows, 6680 columns and 25720 nonzeros Presolve removed 24 rows and 960 columns Presolve time: 0.05s Presolved: 6539 rows, 5720 columns, 24760 nonzeros Variable types: 0 continuous, 5720 integer (5720 binary) Root relaxation: objective 0.000000e+00, 252 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 (252 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 -- 40 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:01 2012 Optimize a model with 3363 rows, 3420 columns and 12860 nonzeros Presolve removed 24 rows and 480 columns Presolve time: 0.02s Presolved: 3339 rows, 2940 columns, 12380 nonzeros Variable types: 0 continuous, 2940 integer (2940 binary) Root relaxation: objective 0.000000e+00, 249 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 (249 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 16:22:01 2012 Optimize a model with 1763 rows, 1790 columns and 6430 nonzeros Presolve removed 24 rows and 240 columns Presolve time: 0.01s Presolved: 1739 rows, 1550 columns, 6190 nonzeros Variable types: 0 continuous, 1550 integer (1550 binary) Root relaxation: objective 0.000000e+00, 249 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 (249 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 16:22:01 2012 Optimize a model with 963 rows, 975 columns and 3215 nonzeros Presolve removed 24 rows and 120 columns Presolve time: 0.00s Presolved: 939 rows, 855 columns, 3095 nonzeros Variable types: 0 continuous, 855 integer (855 binary) Root relaxation: objective 0.000000e+00, 225 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 (225 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 16:22:01 2012 Optimize a model with 483 rows, 486 columns and 1286 nonzeros Presolve removed 169 rows and 196 columns Presolve time: 0.00s Presolved: 314 rows, 290 columns, 942 nonzeros Variable types: 0 continuous, 290 integer (290 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 0.00000 0 133 - 0.00000 - - 0s Explored 0 nodes (498 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 16:22:01 2012 Optimize a model with 643 rows, 649 columns and 1929 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 619 rows, 577 columns, 1857 nonzeros Variable types: 0 continuous, 577 integer (577 binary) Root relaxation: objective 0.000000e+00, 247 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 (247 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