current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:24 2012 Optimize a model with 4838 rows, 7042 columns and 21122 nonzeros Presolve removed 25 rows and 1475 columns Presolve time: 0.06s Presolved: 4813 rows, 5567 columns, 19647 nonzeros Variable types: 0 continuous, 5567 integer (5567 binary) Root relaxation: objective 0.000000e+00, 160 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 (160 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:24 2012 Optimize a model with 2438 rows, 3502 columns and 10382 nonzeros Presolve removed 25 rows and 725 columns Presolve time: 0.02s Presolved: 2413 rows, 2777 columns, 9657 nonzeros Variable types: 0 continuous, 2777 integer (2777 binary) Root relaxation: objective 0.000000e+00, 159 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 (159 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:24 2012 Optimize a model with 1238 rows, 1732 columns and 5012 nonzeros Presolve removed 25 rows and 350 columns Presolve time: 0.01s Presolved: 1213 rows, 1382 columns, 4662 nonzeros Variable types: 0 continuous, 1382 integer (1382 binary) Root relaxation: objective 0.000000e+00, 163 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 (163 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:24 2012 Optimize a model with 678 rows, 906 columns and 2506 nonzeros Presolve removed 25 rows and 175 columns Presolve time: 0.00s Presolved: 653 rows, 731 columns, 2331 nonzeros Variable types: 0 continuous, 731 integer (731 binary) Root relaxation: objective 0.000000e+00, 153 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 (153 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:24 2012 Optimize a model with 358 rows, 434 columns and 1074 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 333 rows, 359 columns, 999 nonzeros Variable types: 0 continuous, 359 integer (359 binary) Root relaxation: objective 0.000000e+00, 135 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 (135 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 16:16:24 2012 Optimize a model with 198 rows, 198 columns and 358 nonzeros Presolve removed 198 rows and 198 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 16:16:24 2012 Optimize a model with 278 rows, 316 columns and 716 nonzeros Presolve removed 126 rows and 155 columns Presolve time: 0.00s Presolved: 152 rows, 161 columns, 456 nonzeros Variable types: 0 continuous, 161 integer (161 binary) Root relaxation: objective 0.000000e+00, 65 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 (65 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