current bounds on the number of colors: 0 -- 222 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:02 2012 Optimize a model with 27084 rows, 24884 columns and 105228 nonzeros Presolve removed 25 rows and 2775 columns Presolve time: 0.14s Presolved: 27059 rows, 22109 columns, 102453 nonzeros Variable types: 0 continuous, 22109 integer (22109 binary) Root relaxation: objective 0.000000e+00, 373 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 (559 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 -- 111 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:03 2012 Optimize a model with 13532 rows, 12452 columns and 52140 nonzeros Presolve removed 25 rows and 1375 columns Presolve time: 0.13s Presolved: 13507 rows, 11077 columns, 50765 nonzeros Variable types: 0 continuous, 11077 integer (11077 binary) Root relaxation: objective 0.000000e+00, 375 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 (567 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:03 2012 Optimize a model with 6756 rows, 6236 columns and 25596 nonzeros Presolve removed 25 rows and 675 columns Presolve time: 0.04s Presolved: 6731 rows, 5561 columns, 24921 nonzeros Variable types: 0 continuous, 5561 integer (5561 binary) Root relaxation: objective 0.000000e+00, 370 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 (370 simplex iterations) in 0.05 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 16:37:04 2012 Optimize a model with 3368 rows, 3128 columns and 12324 nonzeros Presolve removed 25 rows and 325 columns Presolve time: 0.01s Presolved: 3343 rows, 2803 columns, 11999 nonzeros Variable types: 0 continuous, 2803 integer (2803 binary) Root relaxation: objective 0.000000e+00, 381 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 (582 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 16:37:04 2012 Optimize a model with 1674 rows, 1574 columns and 5688 nonzeros Presolve removed 25 rows and 150 columns Presolve time: 0.01s Presolved: 1649 rows, 1424 columns, 5538 nonzeros Variable types: 0 continuous, 1424 integer (1424 binary) Root relaxation: objective 0.000000e+00, 357 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 (357 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 16:37:04 2012 Optimize a model with 948 rows, 908 columns and 2844 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 923 rows, 833 columns, 2769 nonzeros Variable types: 0 continuous, 833 integer (833 binary) Root relaxation: objective 0.000000e+00, 351 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 (490 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 16:37:04 2012 Optimize a model with 464 rows, 464 columns and 948 nonzeros Presolve removed 464 rows and 464 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 16:37:04 2012 Optimize a model with 706 rows, 686 columns and 1896 nonzeros Presolve removed 224 rows and 250 columns Presolve time: 0.00s Presolved: 482 rows, 436 columns, 1446 nonzeros Variable types: 0 continuous, 436 integer (436 binary) Root relaxation: objective 0.000000e+00, 222 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 0 192 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (704 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