current bounds on the number of colors: 0 -- 216 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:54 2012 Optimize a model with 29160 rows, 23596 columns and 110160 nonzeros Presolve removed 19 rows and 2052 columns Presolve time: 0.13s Presolved: 29141 rows, 21544 columns, 108108 nonzeros Variable types: 0 continuous, 21544 integer (21544 binary) Root relaxation: objective 0.000000e+00, 385 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 (385 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 -- 108 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:54 2012 Optimize a model with 14688 rows, 11932 columns and 55080 nonzeros Presolve removed 19 rows and 1026 columns Presolve time: 0.13s Presolved: 14669 rows, 10906 columns, 54054 nonzeros Variable types: 0 continuous, 10906 integer (10906 binary) Root relaxation: objective 0.000000e+00, 392 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 (392 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 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:55 2012 Optimize a model with 7452 rows, 6100 columns and 27540 nonzeros Presolve removed 19 rows and 513 columns Presolve time: 0.04s Presolved: 7433 rows, 5587 columns, 27027 nonzeros Variable types: 0 continuous, 5587 integer (5587 binary) Root relaxation: objective 0.000000e+00, 392 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 (392 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 16:34:55 2012 Optimize a model with 3700 rows, 3076 columns and 13260 nonzeros Presolve removed 19 rows and 247 columns Presolve time: 0.02s Presolved: 3681 rows, 2829 columns, 13013 nonzeros Variable types: 0 continuous, 2829 integer (2829 binary) Root relaxation: objective 0.000000e+00, 391 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 (605 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:55 2012 Optimize a model with 1824 rows, 1564 columns and 6120 nonzeros Presolve removed 19 rows and 114 columns Presolve time: 0.01s Presolved: 1805 rows, 1450 columns, 6006 nonzeros Variable types: 0 continuous, 1450 integer (1450 binary) Root relaxation: objective 0.000000e+00, 362 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 (527 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 16:34:55 2012 Optimize a model with 1020 rows, 916 columns and 3060 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1001 rows, 859 columns, 3003 nonzeros Variable types: 0 continuous, 859 integer (859 binary) Root relaxation: objective 0.000000e+00, 418 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 (707 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 16:34:55 2012 Optimize a model with 484 rows, 484 columns and 1020 nonzeros Presolve removed 484 rows and 484 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 16:34:55 2012 Optimize a model with 752 rows, 700 columns and 2040 nonzeros Presolve removed 222 rows and 244 columns Presolve time: 0.00s Presolved: 530 rows, 456 columns, 1590 nonzeros Variable types: 0 continuous, 456 integer (456 binary) Root relaxation: objective 0.000000e+00, 225 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 0 191 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (742 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