current bounds on the number of colors: 0 -- 169 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:00 2012 Optimize a model with 11173 rows, 14327 columns and 47208 nonzeros Presolve removed 40 rows and 3360 columns Presolve time: 0.12s Presolved: 11133 rows, 10967 columns, 43848 nonzeros Variable types: 0 continuous, 10967 integer (10967 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 0.13 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 -- 84 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:00 2012 Optimize a model with 5671 rows, 7229 columns and 23604 nonzeros Presolve removed 40 rows and 1680 columns Presolve time: 0.05s Presolved: 5631 rows, 5549 columns, 21924 nonzeros Variable types: 0 continuous, 5549 integer (5549 binary) Root relaxation: objective 0.000000e+00, 227 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 (227 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:01 2012 Optimize a model with 2920 rows, 3680 columns and 11802 nonzeros Presolve removed 40 rows and 840 columns Presolve time: 0.02s Presolved: 2880 rows, 2840 columns, 10962 nonzeros Variable types: 0 continuous, 2840 integer (2840 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 0.02 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:01 2012 Optimize a model with 1479 rows, 1821 columns and 5620 nonzeros Presolve removed 40 rows and 400 columns Presolve time: 0.01s Presolved: 1439 rows, 1421 columns, 5220 nonzeros Variable types: 0 continuous, 1421 integer (1421 binary) Root relaxation: objective 0.000000e+00, 219 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 (219 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 16:23:01 2012 Optimize a model with 824 rows, 976 columns and 2810 nonzeros Presolve removed 40 rows and 200 columns Presolve time: 0.00s Presolved: 784 rows, 776 columns, 2610 nonzeros Variable types: 0 continuous, 776 integer (776 binary) Root relaxation: objective 0.000000e+00, 215 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 (215 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 16:23:01 2012 Optimize a model with 431 rows, 469 columns and 1124 nonzeros Presolve removed 181 rows and 227 columns Presolve time: 0.00s Presolved: 250 rows, 242 columns, 750 nonzeros Variable types: 0 continuous, 242 integer (242 binary) Root relaxation: objective 0.000000e+00, 132 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 0 110 - 0.00000 - - 0s Explored 0 nodes (446 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 16:23:01 2012 Optimize a model with 562 rows, 638 columns and 1686 nonzeros Presolve removed 40 rows and 120 columns Presolve time: 0.00s Presolved: 522 rows, 518 columns, 1566 nonzeros Variable types: 0 continuous, 518 integer (518 binary) Root relaxation: objective 0.000000e+00, 208 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 (280 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