current bounds on the number of colors: 0 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:50 2012 Optimize a model with 4759 rows, 7579 columns and 21411 nonzeros Presolve removed 35 rows and 2135 columns Presolve time: 0.06s Presolved: 4724 rows, 5444 columns, 19276 nonzeros Variable types: 0 continuous, 5444 integer (5444 binary) Root relaxation: objective 0.000000e+00, 144 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 (144 simplex iterations) in 0.06 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:51 2012 Optimize a model with 2403 rows, 3766 columns and 10530 nonzeros Presolve removed 35 rows and 1050 columns Presolve time: 0.02s Presolved: 2368 rows, 2716 columns, 9480 nonzeros Variable types: 0 continuous, 2716 integer (2716 binary) Root relaxation: objective 0.000000e+00, 147 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 (147 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:51 2012 Optimize a model with 1263 rows, 1921 columns and 5265 nonzeros Presolve removed 35 rows and 525 columns Presolve time: 0.01s Presolved: 1228 rows, 1396 columns, 4740 nonzeros Variable types: 0 continuous, 1396 integer (1396 binary) Root relaxation: objective 0.000000e+00, 145 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 (145 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:51 2012 Optimize a model with 655 rows, 937 columns and 2457 nonzeros Presolve removed 35 rows and 245 columns Presolve time: 0.00s Presolved: 620 rows, 692 columns, 2212 nonzeros Variable types: 0 continuous, 692 integer (692 binary) Root relaxation: objective 0.000000e+00, 138 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 (138 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 16:16:51 2012 Optimize a model with 351 rows, 445 columns and 1053 nonzeros Presolve removed 35 rows and 105 columns Presolve time: 0.00s Presolved: 316 rows, 340 columns, 948 nonzeros Variable types: 0 continuous, 340 integer (340 binary) Root relaxation: objective 0.000000e+00, 124 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 (124 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 16:16:51 2012 Optimize a model with 199 rows, 199 columns and 351 nonzeros Presolve removed 199 rows and 199 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 16:16:51 2012 Optimize a model with 275 rows, 322 columns and 702 nonzeros Presolve removed 139 rows and 182 columns Presolve time: 0.00s Presolved: 136 rows, 140 columns, 408 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Root relaxation: objective 0.000000e+00, 61 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 (61 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