current bounds on the number of colors: 0 -- 189 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:07 2012 Optimize a model with 18237 rows, 17958 columns and 71910 nonzeros Presolve removed 27 rows and 2538 columns Presolve time: 0.13s Presolved: 18210 rows, 15420 columns, 69372 nonzeros Variable types: 0 continuous, 15420 integer (15420 binary) Root relaxation: objective 0.000000e+00, 304 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 (304 simplex iterations) in 0.15 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:08 2012 Optimize a model with 9213 rows, 9075 columns and 35955 nonzeros Presolve removed 27 rows and 1269 columns Presolve time: 0.08s Presolved: 9186 rows, 7806 columns, 34686 nonzeros Variable types: 0 continuous, 7806 integer (7806 binary) Root relaxation: objective 0.000000e+00, 301 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 (301 simplex iterations) in 0.09 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:08 2012 Optimize a model with 4605 rows, 4539 columns and 17595 nonzeros Presolve removed 27 rows and 621 columns Presolve time: 0.03s Presolved: 4578 rows, 3918 columns, 16974 nonzeros Variable types: 0 continuous, 3918 integer (3918 binary) Root relaxation: objective 0.000000e+00, 298 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 (298 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:08 2012 Optimize a model with 2301 rows, 2271 columns and 8415 nonzeros Presolve removed 27 rows and 297 columns Presolve time: 0.01s Presolved: 2274 rows, 1974 columns, 8118 nonzeros Variable types: 0 continuous, 1974 integer (1974 binary) Root relaxation: objective 0.000000e+00, 299 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 (299 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:08 2012 Optimize a model with 1149 rows, 1137 columns and 3825 nonzeros Presolve removed 27 rows and 135 columns Presolve time: 0.00s Presolved: 1122 rows, 1002 columns, 3690 nonzeros Variable types: 0 continuous, 1002 integer (1002 binary) Root relaxation: objective 0.000000e+00, 279 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 (279 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:08 2012 Optimize a model with 573 rows, 570 columns and 1530 nonzeros Presolve removed 191 rows and 219 columns Presolve time: 0.00s Presolved: 382 rows, 351 columns, 1146 nonzeros Variable types: 0 continuous, 351 integer (351 binary) Root relaxation: objective 0.000000e+00, 191 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 0 160 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (583 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:08 2012 Optimize a model with 765 rows, 759 columns and 2295 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 738 rows, 678 columns, 2214 nonzeros Variable types: 0 continuous, 678 integer (678 binary) Root relaxation: objective 0.000000e+00, 263 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 (364 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% optimal solution found: number of colors: 3