current bounds on the number of colors: 0 -- 119 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:30 2012 Optimize a model with 4957 rows, 7103 columns and 21535 nonzeros Presolve removed 27 rows and 1593 columns Presolve time: 0.06s Presolved: 4930 rows, 5510 columns, 19942 nonzeros Variable types: 0 continuous, 5510 integer (5510 binary) Root relaxation: objective 0.000000e+00, 163 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 (163 simplex iterations) in 0.07 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:30 2012 Optimize a model with 2497 rows, 3533 columns and 10585 nonzeros Presolve removed 27 rows and 783 columns Presolve time: 0.02s Presolved: 2470 rows, 2750 columns, 9802 nonzeros Variable types: 0 continuous, 2750 integer (2750 binary) Root relaxation: objective 0.000000e+00, 165 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 (165 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:30 2012 Optimize a model with 1267 rows, 1748 columns and 5110 nonzeros Presolve removed 27 rows and 378 columns Presolve time: 0.01s Presolved: 1240 rows, 1370 columns, 4732 nonzeros Variable types: 0 continuous, 1370 integer (1370 binary) Root relaxation: objective 0.000000e+00, 161 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 (161 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:30 2012 Optimize a model with 693 rows, 915 columns and 2555 nonzeros Presolve removed 27 rows and 189 columns Presolve time: 0.00s Presolved: 666 rows, 726 columns, 2366 nonzeros Variable types: 0 continuous, 726 integer (726 binary) Root relaxation: objective 0.000000e+00, 156 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 (156 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:31 2012 Optimize a model with 365 rows, 439 columns and 1095 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 338 rows, 358 columns, 1014 nonzeros Variable types: 0 continuous, 358 integer (358 binary) Root relaxation: objective 0.000000e+00, 135 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 (135 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 16:16:31 2012 Optimize a model with 201 rows, 201 columns and 365 nonzeros Presolve removed 201 rows and 201 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 16:16:31 2012 Optimize a model with 283 rows, 320 columns and 730 nonzeros Presolve removed 133 rows and 167 columns Presolve time: 0.00s Presolved: 150 rows, 153 columns, 450 nonzeros Variable types: 0 continuous, 153 integer (153 binary) Root relaxation: objective 0.000000e+00, 91 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 69 - 0.00000 - - 0s Explored 0 nodes (234 simplex iterations) in 0.00 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