current bounds on the number of colors: 0 -- 207 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:56 2012 Optimize a model with 22146 rows, 21534 columns and 87138 nonzeros Presolve removed 23 rows and 2369 columns Presolve time: 0.14s Presolved: 22123 rows, 19165 columns, 84769 nonzeros Variable types: 0 continuous, 19165 integer (19165 binary) Root relaxation: objective 0.000000e+00, 326 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 (326 simplex iterations) in 0.16 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:57 2012 Optimize a model with 11070 rows, 10770 columns and 43146 nonzeros Presolve removed 23 rows and 1173 columns Presolve time: 0.10s Presolved: 11047 rows, 9597 columns, 41973 nonzeros Variable types: 0 continuous, 9597 integer (9597 binary) Root relaxation: objective 0.000000e+00, 327 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 (327 simplex iterations) in 0.12 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:57 2012 Optimize a model with 5532 rows, 5388 columns and 21150 nonzeros Presolve removed 23 rows and 575 columns Presolve time: 0.03s Presolved: 5509 rows, 4813 columns, 20575 nonzeros Variable types: 0 continuous, 4813 integer (4813 binary) Root relaxation: objective 0.000000e+00, 326 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 (326 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:57 2012 Optimize a model with 2763 rows, 2697 columns and 10152 nonzeros Presolve removed 23 rows and 276 columns Presolve time: 0.01s Presolved: 2740 rows, 2421 columns, 9876 nonzeros Variable types: 0 continuous, 2421 integer (2421 binary) Root relaxation: objective 0.000000e+00, 336 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 (336 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:57 2012 Optimize a model with 1485 rows, 1455 columns and 5076 nonzeros Presolve removed 23 rows and 138 columns Presolve time: 0.01s Presolved: 1462 rows, 1317 columns, 4938 nonzeros Variable types: 0 continuous, 1317 integer (1317 binary) Root relaxation: objective 0.000000e+00, 331 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 (331 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:57 2012 Optimize a model with 846 rows, 834 columns and 2538 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 823 rows, 765 columns, 2469 nonzeros Variable types: 0 continuous, 765 integer (765 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% current bounds on the number of colors: 0 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:57 2012 Optimize a model with 420 rows, 420 columns and 846 nonzeros Presolve removed 420 rows and 420 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 16:31:57 2012 Optimize a model with 633 rows, 627 columns and 1692 nonzeros Presolve removed 215 rows and 242 columns Presolve time: 0.00s Presolved: 418 rows, 385 columns, 1254 nonzeros Variable types: 0 continuous, 385 integer (385 binary) Root relaxation: objective 0.000000e+00, 207 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 0 176 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (674 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 - optimal solution found: number of colors: 3