current bounds on the number of colors: 0 -- 100 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:09 2012 Optimize a model with 2300 rows, 5044 columns and 11600 nonzeros Presolve removed 39 rows and 1950 columns Presolve time: 0.03s Presolved: 2261 rows, 3094 columns, 9650 nonzeros Variable types: 0 continuous, 3094 integer (3094 binary) Root relaxation: objective 0.000000e+00, 97 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 (97 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:09 2012 Optimize a model with 1200 rows, 2544 columns and 5800 nonzeros Presolve removed 39 rows and 975 columns Presolve time: 0.01s Presolved: 1161 rows, 1569 columns, 4825 nonzeros Variable types: 0 continuous, 1569 integer (1569 binary) Root relaxation: objective 0.000000e+00, 96 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 (96 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:09 2012 Optimize a model with 628 rows, 1244 columns and 2784 nonzeros Presolve removed 39 rows and 468 columns Presolve time: 0.00s Presolved: 589 rows, 776 columns, 2316 nonzeros Variable types: 0 continuous, 776 integer (776 binary) Root relaxation: objective 0.000000e+00, 98 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 (98 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:09 2012 Optimize a model with 364 rows, 644 columns and 1392 nonzeros Presolve removed 39 rows and 234 columns Presolve time: 0.00s Presolved: 325 rows, 410 columns, 1158 nonzeros Variable types: 0 continuous, 410 integer (410 binary) Root relaxation: objective 0.000000e+00, 92 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 (92 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:09 2012 Optimize a model with 232 rows, 344 columns and 696 nonzeros Presolve removed 39 rows and 117 columns Presolve time: 0.00s Presolved: 193 rows, 227 columns, 579 nonzeros Variable types: 0 continuous, 227 integer (227 binary) Root relaxation: objective 0.000000e+00, 83 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 (83 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:09 2012 Optimize a model with 144 rows, 144 columns and 232 nonzeros Presolve removed 144 rows and 144 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 16:15:09 2012 Optimize a model with 188 rows, 244 columns and 464 nonzeros Presolve removed 120 rows and 169 columns Presolve time: 0.00s Presolved: 68 rows, 75 columns, 204 nonzeros Variable types: 0 continuous, 75 integer (75 binary) Root relaxation: objective 0.000000e+00, 27 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 (27 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: 2