current bounds on the number of colors: 0 -- 186 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:27 2012 Optimize a model with 16368 rows, 17472 columns and 65844 nonzeros Presolve removed 29 rows and 2697 columns Presolve time: 0.13s Presolved: 16339 rows, 14775 columns, 63147 nonzeros Variable types: 0 continuous, 14775 integer (14775 binary) Root relaxation: objective 0.000000e+00, 278 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 (278 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 16:26:27 2012 Optimize a model with 8190 rows, 8730 columns and 32568 nonzeros Presolve removed 29 rows and 1334 columns Presolve time: 0.07s Presolved: 8161 rows, 7396 columns, 31234 nonzeros Variable types: 0 continuous, 7396 integer (7396 binary) Root relaxation: objective 0.000000e+00, 284 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 (284 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 16:26:27 2012 Optimize a model with 4188 rows, 4452 columns and 16284 nonzeros Presolve removed 29 rows and 667 columns Presolve time: 0.03s Presolved: 4159 rows, 3785 columns, 15617 nonzeros Variable types: 0 continuous, 3785 integer (3785 binary) Root relaxation: objective 0.000000e+00, 283 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 (283 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 16:26:28 2012 Optimize a model with 2100 rows, 2220 columns and 7788 nonzeros Presolve removed 29 rows and 319 columns Presolve time: 0.01s Presolved: 2071 rows, 1901 columns, 7469 nonzeros Variable types: 0 continuous, 1901 integer (1901 binary) Root relaxation: objective 0.000000e+00, 290 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 (290 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 16:26:28 2012 Optimize a model with 1056 rows, 1104 columns and 3540 nonzeros Presolve removed 29 rows and 145 columns Presolve time: 0.00s Presolved: 1027 rows, 959 columns, 3395 nonzeros Variable types: 0 continuous, 959 integer (959 binary) Root relaxation: objective 0.000000e+00, 248 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 (248 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 16:26:28 2012 Optimize a model with 534 rows, 546 columns and 1416 nonzeros Presolve removed 192 rows and 224 columns Presolve time: 0.00s Presolved: 342 rows, 322 columns, 1026 nonzeros Variable types: 0 continuous, 322 integer (322 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 0.00000 0 144 - 0.00000 - - 0s Explored 0 nodes (540 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 16:26:28 2012 Optimize a model with 708 rows, 732 columns and 2124 nonzeros Presolve removed 29 rows and 87 columns Presolve time: 0.00s Presolved: 679 rows, 645 columns, 2037 nonzeros Variable types: 0 continuous, 645 integer (645 binary) Root relaxation: objective 0.000000e+00, 280 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 (280 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