current bounds on the number of colors: 0 -- 171 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:23 2012 Optimize a model with 11476 rows, 14668 columns and 48450 nonzeros Presolve removed 34 rows and 2890 columns Presolve time: 0.12s Presolved: 11442 rows, 11778 columns, 45560 nonzeros Variable types: 0 continuous, 11778 integer (11778 binary) Root relaxation: objective 0.000000e+00, 233 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 (233 simplex iterations) in 0.13 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 -- 85 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:23 2012 Optimize a model with 5757 rows, 7315 columns and 23940 nonzeros Presolve removed 34 rows and 1428 columns Presolve time: 0.05s Presolved: 5723 rows, 5887 columns, 22512 nonzeros Variable types: 0 continuous, 5887 integer (5887 binary) Root relaxation: objective 0.000000e+00, 233 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 (233 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:23 2012 Optimize a model with 2964 rows, 3724 columns and 11970 nonzeros Presolve removed 34 rows and 714 columns Presolve time: 0.02s Presolved: 2930 rows, 3010 columns, 11256 nonzeros Variable types: 0 continuous, 3010 integer (3010 binary) Root relaxation: objective 0.000000e+00, 233 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 (233 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:23 2012 Optimize a model with 1501 rows, 1843 columns and 5700 nonzeros Presolve removed 34 rows and 340 columns Presolve time: 0.01s Presolved: 1467 rows, 1503 columns, 5360 nonzeros Variable types: 0 continuous, 1503 integer (1503 binary) Root relaxation: objective 0.000000e+00, 235 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 (235 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:23 2012 Optimize a model with 836 rows, 988 columns and 2850 nonzeros Presolve removed 34 rows and 170 columns Presolve time: 0.00s Presolved: 802 rows, 818 columns, 2680 nonzeros Variable types: 0 continuous, 818 integer (818 binary) Root relaxation: objective 0.000000e+00, 221 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 (221 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:23 2012 Optimize a model with 437 rows, 475 columns and 1140 nonzeros Presolve removed 189 rows and 232 columns Presolve time: 0.00s Presolved: 248 rows, 243 columns, 744 nonzeros Variable types: 0 continuous, 243 integer (243 binary) Root relaxation: objective 0.000000e+00, 119 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 99 - 0.00000 - - 0s Explored 0 nodes (371 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:23 2012 Optimize a model with 570 rows, 646 columns and 1710 nonzeros Presolve removed 34 rows and 102 columns Presolve time: 0.00s Presolved: 536 rows, 544 columns, 1608 nonzeros Variable types: 0 continuous, 544 integer (544 binary) Root relaxation: objective 0.000000e+00, 218 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 (218 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% optimal solution found: number of colors: 3