current bounds on the number of colors: 0 -- 164 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:10 2012 Optimize a model with 13530 rows, 13611 columns and 53546 nonzeros Presolve removed 26 rows and 2132 columns Presolve time: 0.12s Presolved: 13504 rows, 11479 columns, 51414 nonzeros Variable types: 0 continuous, 11479 integer (11479 binary) Root relaxation: objective 0.000000e+00, 251 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 (251 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 -- 82 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:11 2012 Optimize a model with 6847 rows, 6887 columns and 26773 nonzeros Presolve removed 26 rows and 1066 columns Presolve time: 0.05s Presolved: 6821 rows, 5821 columns, 25707 nonzeros Variable types: 0 continuous, 5821 integer (5821 binary) Root relaxation: objective 0.000000e+00, 250 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 (250 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 16:22:11 2012 Optimize a model with 3424 rows, 3443 columns and 13060 nonzeros Presolve removed 26 rows and 520 columns Presolve time: 0.02s Presolved: 3398 rows, 2923 columns, 12540 nonzeros Variable types: 0 continuous, 2923 integer (2923 binary) Root relaxation: objective 0.000000e+00, 251 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 (251 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 16:22:11 2012 Optimize a model with 1794 rows, 1803 columns and 6530 nonzeros Presolve removed 26 rows and 260 columns Presolve time: 0.01s Presolved: 1768 rows, 1543 columns, 6270 nonzeros Variable types: 0 continuous, 1543 integer (1543 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 0.01 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 16:22:11 2012 Optimize a model with 979 rows, 983 columns and 3265 nonzeros Presolve removed 26 rows and 130 columns Presolve time: 0.00s Presolved: 953 rows, 853 columns, 3135 nonzeros Variable types: 0 continuous, 853 integer (853 binary) Root relaxation: objective 0.000000e+00, 237 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 (336 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 16:22:11 2012 Optimize a model with 490 rows, 491 columns and 1306 nonzeros Presolve removed 170 rows and 199 columns Presolve time: 0.00s Presolved: 320 rows, 292 columns, 960 nonzeros Variable types: 0 continuous, 292 integer (292 binary) Root relaxation: objective 0.000000e+00, 162 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 0 132 - 0.00000 - - 0s Explored 0 nodes (472 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 16:22:11 2012 Optimize a model with 653 rows, 655 columns and 1959 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 627 rows, 577 columns, 1881 nonzeros Variable types: 0 continuous, 577 integer (577 binary) Root relaxation: objective 0.000000e+00, 236 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 (236 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