current bounds on the number of colors: 0 -- 134 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 5829 rows, 9063 columns and 26063 nonzeros Presolve removed 43 rows and 2881 columns Presolve time: 0.08s Presolved: 5786 rows, 6182 columns, 23182 nonzeros Variable types: 0 continuous, 6182 integer (6182 binary) Root relaxation: objective 0.000000e+00, 158 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 (158 simplex iterations) in 0.08 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 -- 67 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 2939 rows, 4507 columns and 12837 nonzeros Presolve removed 43 rows and 1419 columns Presolve time: 0.02s Presolved: 2896 rows, 3088 columns, 11418 nonzeros Variable types: 0 continuous, 3088 integer (3088 binary) Root relaxation: objective 0.000000e+00, 157 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 (157 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 -- 33 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 1494 rows, 2229 columns and 6224 nonzeros Presolve removed 43 rows and 688 columns Presolve time: 0.01s Presolved: 1451 rows, 1541 columns, 5536 nonzeros Variable types: 0 continuous, 1541 integer (1541 binary) Root relaxation: objective 0.000000e+00, 158 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 (158 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 814 rows, 1157 columns and 3112 nonzeros Presolve removed 43 rows and 344 columns Presolve time: 0.00s Presolved: 771 rows, 813 columns, 2768 nonzeros Variable types: 0 continuous, 813 integer (813 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 (229 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 474 rows, 621 columns and 1556 nonzeros Presolve removed 43 rows and 172 columns Presolve time: 0.00s Presolved: 431 rows, 449 columns, 1384 nonzeros Variable types: 0 continuous, 449 integer (449 binary) Root relaxation: objective 0.000000e+00, 150 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 (150 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 16:17:53 2012 Optimize a model with 304 rows, 353 columns and 778 nonzeros Presolve removed 142 rows and 189 columns Presolve time: 0.00s Presolved: 162 rows, 164 columns, 486 nonzeros Variable types: 0 continuous, 164 integer (164 binary) Root relaxation: objective 0.000000e+00, 81 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 67 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (289 simplex iterations) in 0.00 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:53 2012 Optimize a model with 389 rows, 487 columns and 1167 nonzeros Presolve removed 43 rows and 129 columns Presolve time: 0.00s Presolved: 346 rows, 358 columns, 1038 nonzeros Variable types: 0 continuous, 358 integer (358 binary) Root relaxation: objective 0.000000e+00, 139 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 (139 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: 3