current bounds on the number of colors: 0 -- 186 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:32 2012 Optimize a model with 16647 rows, 17475 columns and 66681 nonzeros Presolve removed 26 rows and 2418 columns Presolve time: 0.13s Presolved: 16621 rows, 15057 columns, 64263 nonzeros Variable types: 0 continuous, 15057 integer (15057 binary) Root relaxation: objective 0.000000e+00, 289 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 (289 simplex iterations) in 0.14 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:33 2012 Optimize a model with 8328 rows, 8733 columns and 32982 nonzeros Presolve removed 26 rows and 1196 columns Presolve time: 0.07s Presolved: 8302 rows, 7537 columns, 31786 nonzeros Variable types: 0 continuous, 7537 integer (7537 binary) Root relaxation: objective 0.000000e+00, 291 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 (291 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:33 2012 Optimize a model with 4257 rows, 4455 columns and 16491 nonzeros Presolve removed 26 rows and 598 columns Presolve time: 0.03s Presolved: 4231 rows, 3857 columns, 15893 nonzeros Variable types: 0 continuous, 3857 integer (3857 binary) Root relaxation: objective 0.000000e+00, 288 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 (288 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 16:26:33 2012 Optimize a model with 2133 rows, 2223 columns and 7887 nonzeros Presolve removed 26 rows and 286 columns Presolve time: 0.01s Presolved: 2107 rows, 1937 columns, 7601 nonzeros Variable types: 0 continuous, 1937 integer (1937 binary) Root relaxation: objective 0.000000e+00, 287 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 (287 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 16:26:33 2012 Optimize a model with 1071 rows, 1107 columns and 3585 nonzeros Presolve removed 26 rows and 130 columns Presolve time: 0.00s Presolved: 1045 rows, 977 columns, 3455 nonzeros Variable types: 0 continuous, 977 integer (977 binary) Root relaxation: objective 0.000000e+00, 276 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 (393 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 16:26:33 2012 Optimize a model with 540 rows, 549 columns and 1434 nonzeros Presolve removed 190 rows and 218 columns Presolve time: 0.00s Presolved: 350 rows, 331 columns, 1050 nonzeros Variable types: 0 continuous, 331 integer (331 binary) Root relaxation: objective 0.000000e+00, 167 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 0 142 - 0.00000 - - 0s Explored 0 nodes (549 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 16:26:33 2012 Optimize a model with 717 rows, 735 columns and 2151 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 691 rows, 657 columns, 2073 nonzeros Variable types: 0 continuous, 657 integer (657 binary) Root relaxation: objective 0.000000e+00, 297 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 (297 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