current bounds on the number of colors: 0 -- 240 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:12 2012 Optimize a model with 35880 rows, 29097 columns and 135720 nonzeros Presolve removed 21 rows and 2520 columns Presolve time: 0.18s Presolved: 35859 rows, 26577 columns, 133200 nonzeros Variable types: 0 continuous, 26577 integer (26577 binary) Root relaxation: objective 0.000000e+00, 415 iterations, 0.02 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 (415 simplex iterations) in 0.21 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 -- 120 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:13 2012 Optimize a model with 18060 rows, 14697 columns and 67860 nonzeros Presolve removed 21 rows and 1260 columns Presolve time: 0.13s Presolved: 18039 rows, 13437 columns, 66600 nonzeros Variable types: 0 continuous, 13437 integer (13437 binary) Root relaxation: objective 0.000000e+00, 414 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 (414 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:13 2012 Optimize a model with 9150 rows, 7497 columns and 33930 nonzeros Presolve removed 21 rows and 630 columns Presolve time: 0.06s Presolved: 9129 rows, 6867 columns, 33300 nonzeros Variable types: 0 continuous, 6867 integer (6867 binary) Root relaxation: objective 0.000000e+00, 414 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 (414 simplex iterations) in 0.07 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:14 2012 Optimize a model with 4695 rows, 3897 columns and 16965 nonzeros Presolve removed 21 rows and 315 columns Presolve time: 0.02s Presolved: 4674 rows, 3582 columns, 16650 nonzeros Variable types: 0 continuous, 3582 integer (3582 binary) Root relaxation: objective 0.000000e+00, 421 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 (421 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:14 2012 Optimize a model with 2319 rows, 1977 columns and 7917 nonzeros Presolve removed 21 rows and 147 columns Presolve time: 0.01s Presolved: 2298 rows, 1830 columns, 7770 nonzeros Variable types: 0 continuous, 1830 integer (1830 binary) Root relaxation: objective 0.000000e+00, 430 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 (642 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:14 2012 Optimize a model with 1131 rows, 1017 columns and 3393 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 1110 rows, 954 columns, 3330 nonzeros Variable types: 0 continuous, 954 integer (954 binary) Root relaxation: objective 0.000000e+00, 462 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 (621 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:14 2012 Optimize a model with 537 rows, 537 columns and 1131 nonzeros Presolve removed 537 rows and 537 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:14 2012 Optimize a model with 834 rows, 777 columns and 2262 nonzeros Presolve removed 248 rows and 273 columns Presolve time: 0.00s Presolved: 586 rows, 504 columns, 1758 nonzeros Variable types: 0 continuous, 504 integer (504 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 0.00000 0 211 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (779 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 - optimal solution found: number of colors: 3