current bounds on the number of colors: 0 -- 231 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:32 2012 Optimize a model with 33121 rows, 26851 columns and 125235 nonzeros Presolve removed 11 rows and 1265 columns Presolve time: 0.16s Presolved: 33110 rows, 25586 columns, 123970 nonzeros Variable types: 0 continuous, 25586 integer (25586 binary) Root relaxation: objective 0.000000e+00, 432 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 (432 simplex iterations) in 0.19 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 -- 115 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:33 2012 Optimize a model with 16533 rows, 13453 columns and 62073 nonzeros Presolve removed 11 rows and 627 columns Presolve time: 0.12s Presolved: 16522 rows, 12826 columns, 61446 nonzeros Variable types: 0 continuous, 12826 integer (12826 binary) Root relaxation: objective 0.000000e+00, 435 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 (435 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:33 2012 Optimize a model with 8239 rows, 6754 columns and 30492 nonzeros Presolve removed 11 rows and 308 columns Presolve time: 0.05s Presolved: 8228 rows, 6446 columns, 30184 nonzeros Variable types: 0 continuous, 6446 integer (6446 binary) Root relaxation: objective 0.000000e+00, 439 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 (439 simplex iterations) in 0.06 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:33 2012 Optimize a model with 4235 rows, 3520 columns and 15246 nonzeros Presolve removed 11 rows and 154 columns Presolve time: 0.02s Presolved: 4224 rows, 3366 columns, 15092 nonzeros Variable types: 0 continuous, 3366 integer (3366 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:33 2012 Optimize a model with 2233 rows, 1903 columns and 7623 nonzeros Presolve removed 11 rows and 77 columns Presolve time: 0.01s Presolved: 2222 rows, 1826 columns, 7546 nonzeros Variable types: 0 continuous, 1826 integer (1826 binary) Root relaxation: objective 0.000000e+00, 410 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 (410 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:33 2012 Optimize a model with 1089 rows, 979 columns and 3267 nonzeros Presolve removed 11 rows and 33 columns Presolve time: 0.00s Presolved: 1078 rows, 946 columns, 3234 nonzeros Variable types: 0 continuous, 946 integer (946 binary) Root relaxation: objective 0.000000e+00, 430 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 (632 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:34 2012 Optimize a model with 517 rows, 517 columns and 1089 nonzeros Presolve removed 517 rows and 517 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 16:40:34 2012 Optimize a model with 803 rows, 748 columns and 2178 nonzeros Presolve removed 235 rows and 248 columns Presolve time: 0.00s Presolved: 568 rows, 500 columns, 1704 nonzeros Variable types: 0 continuous, 500 integer (500 binary) Root relaxation: objective 0.000000e+00, 253 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 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (848 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