current bounds on the number of colors: 0 -- 99 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:06 2012 Optimize a model with 2549 rows, 4901 columns and 12201 nonzeros Presolve removed 32 rows and 1568 columns Presolve time: 0.03s Presolved: 2517 rows, 3333 columns, 10633 nonzeros Variable types: 0 continuous, 3333 integer (3333 binary) Root relaxation: objective 0.000000e+00, 110 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 (110 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:07 2012 Optimize a model with 1299 rows, 2426 columns and 5976 nonzeros Presolve removed 32 rows and 768 columns Presolve time: 0.01s Presolved: 1267 rows, 1658 columns, 5208 nonzeros Variable types: 0 continuous, 1658 integer (1658 binary) Root relaxation: objective 0.000000e+00, 110 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 (110 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:07 2012 Optimize a model with 699 rows, 1238 columns and 2988 nonzeros Presolve removed 32 rows and 384 columns Presolve time: 0.00s Presolved: 667 rows, 854 columns, 2604 nonzeros Variable types: 0 continuous, 854 integer (854 binary) Root relaxation: objective 0.000000e+00, 108 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 (108 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 16:15:07 2012 Optimize a model with 399 rows, 644 columns and 1494 nonzeros Presolve removed 32 rows and 192 columns Presolve time: 0.00s Presolved: 367 rows, 452 columns, 1302 nonzeros Variable types: 0 continuous, 452 integer (452 binary) Root relaxation: objective 0.000000e+00, 102 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 (102 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 16:15:07 2012 Optimize a model with 249 rows, 347 columns and 747 nonzeros Presolve removed 32 rows and 96 columns Presolve time: 0.00s Presolved: 217 rows, 251 columns, 651 nonzeros Variable types: 0 continuous, 251 integer (251 binary) Root relaxation: objective 0.000000e+00, 90 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 (90 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 16:15:07 2012 Optimize a model with 149 rows, 149 columns and 249 nonzeros Presolve removed 149 rows and 149 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 16:15:07 2012 Optimize a model with 199 rows, 248 columns and 498 nonzeros Presolve removed 117 rows and 158 columns Presolve time: 0.00s Presolved: 82 rows, 90 columns, 246 nonzeros Variable types: 0 continuous, 90 integer (90 binary) Root relaxation: objective 0.000000e+00, 36 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 (36 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