current bounds on the number of colors: 0 -- 222 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:09 2012 Optimize a model with 29526 rows, 24906 columns and 112554 nonzeros Presolve removed 17 rows and 1887 columns Presolve time: 0.15s Presolved: 29509 rows, 23019 columns, 110667 nonzeros Variable types: 0 continuous, 23019 integer (23019 binary) Root relaxation: objective 0.000000e+00, 378 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 (378 simplex iterations) in 0.17 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 16:37:09 2012 Optimize a model with 14742 rows, 12474 columns and 55770 nonzeros Presolve removed 17 rows and 935 columns Presolve time: 0.13s Presolved: 14725 rows, 11539 columns, 54835 nonzeros Variable types: 0 continuous, 11539 integer (11539 binary) Root relaxation: objective 0.000000e+00, 378 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 (378 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 16:37:10 2012 Optimize a model with 7350 rows, 6258 columns and 27378 nonzeros Presolve removed 17 rows and 459 columns Presolve time: 0.04s Presolved: 7333 rows, 5799 columns, 26919 nonzeros Variable types: 0 continuous, 5799 integer (5799 binary) Root relaxation: objective 0.000000e+00, 383 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 (383 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 16:37:10 2012 Optimize a model with 3654 rows, 3150 columns and 13182 nonzeros Presolve removed 17 rows and 221 columns Presolve time: 0.02s Presolved: 3637 rows, 2929 columns, 12961 nonzeros Variable types: 0 continuous, 2929 integer (2929 binary) Root relaxation: objective 0.000000e+00, 389 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 (389 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 16:37:10 2012 Optimize a model with 1806 rows, 1596 columns and 6084 nonzeros Presolve removed 17 rows and 102 columns Presolve time: 0.01s Presolved: 1789 rows, 1494 columns, 5982 nonzeros Variable types: 0 continuous, 1494 integer (1494 binary) Root relaxation: objective 0.000000e+00, 389 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 (560 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 16:37:10 2012 Optimize a model with 1014 rows, 930 columns and 3042 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 997 rows, 879 columns, 2991 nonzeros Variable types: 0 continuous, 879 integer (879 binary) Root relaxation: objective 0.000000e+00, 376 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 (376 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 16:37:10 2012 Optimize a model with 486 rows, 486 columns and 1014 nonzeros Presolve removed 486 rows and 486 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 16:37:10 2012 Optimize a model with 750 rows, 708 columns and 2028 nonzeros Presolve removed 224 rows and 242 columns Presolve time: 0.00s Presolved: 526 rows, 466 columns, 1578 nonzeros Variable types: 0 continuous, 466 integer (466 binary) Root relaxation: objective 0.000000e+00, 240 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 0 203 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (760 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