current bounds on the number of colors: 0 -- 221 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:30 2012 Optimize a model with 27281 rows, 24556 columns and 105490 nonzeros Presolve removed 24 rows and 2640 columns Presolve time: 0.14s Presolved: 27257 rows, 21916 columns, 102850 nonzeros Variable types: 0 continuous, 21916 integer (21916 binary) Root relaxation: objective 0.000000e+00, 372 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 (575 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 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:31 2012 Optimize a model with 13751 rows, 12401 columns and 52745 nonzeros Presolve removed 24 rows and 1320 columns Presolve time: 0.13s Presolved: 13727 rows, 11081 columns, 51425 nonzeros Variable types: 0 continuous, 11081 integer (11081 binary) Root relaxation: objective 0.000000e+00, 372 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 (545 simplex iterations) in 0.15 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:31 2012 Optimize a model with 6863 rows, 6213 columns and 25893 nonzeros Presolve removed 24 rows and 648 columns Presolve time: 0.04s Presolved: 6839 rows, 5565 columns, 25245 nonzeros Variable types: 0 continuous, 5565 integer (5565 binary) Root relaxation: objective 0.000000e+00, 375 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 (557 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:32 2012 Optimize a model with 3419 rows, 3119 columns and 12467 nonzeros Presolve removed 24 rows and 312 columns Presolve time: 0.01s Presolved: 3395 rows, 2807 columns, 12155 nonzeros Variable types: 0 continuous, 2807 integer (2807 binary) Root relaxation: objective 0.000000e+00, 377 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 (575 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:32 2012 Optimize a model with 1697 rows, 1572 columns and 5754 nonzeros Presolve removed 24 rows and 144 columns Presolve time: 0.01s Presolved: 1673 rows, 1428 columns, 5610 nonzeros Variable types: 0 continuous, 1428 integer (1428 binary) Root relaxation: objective 0.000000e+00, 354 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 (354 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 16:36:32 2012 Optimize a model with 959 rows, 909 columns and 2877 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 935 rows, 837 columns, 2805 nonzeros Variable types: 0 continuous, 837 integer (837 binary) Root relaxation: objective 0.000000e+00, 355 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 (355 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 16:36:32 2012 Optimize a model with 467 rows, 467 columns and 959 nonzeros Presolve removed 467 rows and 467 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 16:36:32 2012 Optimize a model with 713 rows, 688 columns and 1918 nonzeros Presolve removed 225 rows and 251 columns Presolve time: 0.00s Presolved: 488 rows, 437 columns, 1464 nonzeros Variable types: 0 continuous, 437 integer (437 binary) Root relaxation: objective 0.000000e+00, 224 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 0 193 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (749 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