current bounds on the number of colors: 0 -- 129 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:23 2012 Optimize a model with 6465 rows, 8355 columns and 27264 nonzeros Presolve removed 24 rows and 1536 columns Presolve time: 0.08s Presolved: 6441 rows, 6819 columns, 25728 nonzeros Variable types: 0 continuous, 6819 integer (6819 binary) Root relaxation: objective 0.000000e+00, 184 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 (268 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 -- 64 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:24 2012 Optimize a model with 3297 rows, 4227 columns and 13632 nonzeros Presolve removed 24 rows and 768 columns Presolve time: 0.03s Presolved: 3273 rows, 3459 columns, 12864 nonzeros Variable types: 0 continuous, 3459 integer (3459 binary) Root relaxation: objective 0.000000e+00, 181 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 (260 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 -- 32 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:24 2012 Optimize a model with 1713 rows, 2163 columns and 6816 nonzeros Presolve removed 24 rows and 384 columns Presolve time: 0.01s Presolved: 1689 rows, 1779 columns, 6432 nonzeros Variable types: 0 continuous, 1779 integer (1779 binary) Root relaxation: objective 0.000000e+00, 180 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 (180 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 16:17:24 2012 Optimize a model with 921 rows, 1131 columns and 3408 nonzeros Presolve removed 24 rows and 192 columns Presolve time: 0.00s Presolved: 897 rows, 939 columns, 3216 nonzeros Variable types: 0 continuous, 939 integer (939 binary) Root relaxation: objective 0.000000e+00, 172 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 (172 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 16:17:24 2012 Optimize a model with 525 rows, 615 columns and 1704 nonzeros Presolve removed 24 rows and 96 columns Presolve time: 0.00s Presolved: 501 rows, 519 columns, 1608 nonzeros Variable types: 0 continuous, 519 integer (519 binary) Root relaxation: objective 0.000000e+00, 163 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 (163 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 16:17:24 2012 Optimize a model with 327 rows, 357 columns and 852 nonzeros Presolve removed 139 rows and 168 columns Presolve time: 0.00s Presolved: 188 rows, 189 columns, 564 nonzeros Variable types: 0 continuous, 189 integer (189 binary) Root relaxation: objective 0.000000e+00, 104 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 86 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (294 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 16:17:24 2012 Optimize a model with 426 rows, 486 columns and 1278 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 402 rows, 414 columns, 1206 nonzeros Variable types: 0 continuous, 414 integer (414 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 0.00 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