current bounds on the number of colors: 0 -- 144 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:02 2012 Optimize a model with 8280 rows, 10481 columns and 34776 nonzeros Presolve removed 27 rows and 1944 columns Presolve time: 0.10s Presolved: 8253 rows, 8537 columns, 32832 nonzeros Variable types: 0 continuous, 8537 integer (8537 binary) Root relaxation: objective 0.000000e+00, 201 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 (201 simplex iterations) in 0.11 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 -- 72 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:02 2012 Optimize a model with 4212 rows, 5297 columns and 17388 nonzeros Presolve removed 27 rows and 972 columns Presolve time: 0.03s Presolved: 4185 rows, 4325 columns, 16416 nonzeros Variable types: 0 continuous, 4325 integer (4325 binary) Root relaxation: objective 0.000000e+00, 202 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 (202 simplex iterations) in 0.04 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 -- 36 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:02 2012 Optimize a model with 2178 rows, 2705 columns and 8694 nonzeros Presolve removed 27 rows and 486 columns Presolve time: 0.01s Presolved: 2151 rows, 2219 columns, 8208 nonzeros Variable types: 0 continuous, 2219 integer (2219 binary) Root relaxation: objective 0.000000e+00, 200 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 (200 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:03 2012 Optimize a model with 1161 rows, 1409 columns and 4347 nonzeros Presolve removed 27 rows and 243 columns Presolve time: 0.00s Presolved: 1134 rows, 1166 columns, 4104 nonzeros Variable types: 0 continuous, 1166 integer (1166 binary) Root relaxation: objective 0.000000e+00, 203 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 (203 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:03 2012 Optimize a model with 596 rows, 689 columns and 1932 nonzeros Presolve removed 27 rows and 108 columns Presolve time: 0.00s Presolved: 569 rows, 581 columns, 1824 nonzeros Variable types: 0 continuous, 581 integer (581 binary) Root relaxation: objective 0.000000e+00, 185 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 (185 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:03 2012 Optimize a model with 370 rows, 401 columns and 966 nonzeros Presolve removed 154 rows and 186 columns Presolve time: 0.00s Presolved: 216 rows, 215 columns, 648 nonzeros Variable types: 0 continuous, 215 integer (215 binary) Root relaxation: objective 0.000000e+00, 86 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 (86 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 -- 2 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:03 2012 Optimize a model with 257 rows, 257 columns and 483 nonzeros Presolve removed 257 rows and 257 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 - optimal solution found: number of colors: 2