current bounds on the number of colors: 0 -- 166 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:28 2012 Optimize a model with 12201 rows, 13923 columns and 49883 nonzeros Presolve removed 30 rows and 2490 columns Presolve time: 0.12s Presolved: 12171 rows, 11433 columns, 47393 nonzeros Variable types: 0 continuous, 11433 integer (11433 binary) Root relaxation: objective 0.000000e+00, 243 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 (243 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 -- 83 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:29 2012 Optimize a model with 6111 rows, 6951 columns and 24641 nonzeros Presolve removed 30 rows and 1230 columns Presolve time: 0.05s Presolved: 6081 rows, 5721 columns, 23411 nonzeros Variable types: 0 continuous, 5721 integer (5721 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (240 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 -- 41 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:29 2012 Optimize a model with 3066 rows, 3465 columns and 12020 nonzeros Presolve removed 30 rows and 600 columns Presolve time: 0.02s Presolved: 3036 rows, 2865 columns, 11420 nonzeros Variable types: 0 continuous, 2865 integer (2865 binary) Root relaxation: objective 0.000000e+00, 236 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 (236 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:29 2012 Optimize a model with 1616 rows, 1805 columns and 6010 nonzeros Presolve removed 30 rows and 300 columns Presolve time: 0.01s Presolved: 1586 rows, 1505 columns, 5710 nonzeros Variable types: 0 continuous, 1505 integer (1505 binary) Root relaxation: objective 0.000000e+00, 237 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 (237 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 16:22:29 2012 Optimize a model with 891 rows, 975 columns and 3005 nonzeros Presolve removed 30 rows and 150 columns Presolve time: 0.00s Presolved: 861 rows, 825 columns, 2855 nonzeros Variable types: 0 continuous, 825 integer (825 binary) Root relaxation: objective 0.000000e+00, 220 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 (220 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 16:22:29 2012 Optimize a model with 456 rows, 477 columns and 1202 nonzeros Presolve removed 170 rows and 202 columns Presolve time: 0.00s Presolved: 286 rows, 275 columns, 858 nonzeros Variable types: 0 continuous, 275 integer (275 binary) Root relaxation: objective 0.000000e+00, 148 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 0 119 - 0.00000 - - 0s Explored 0 nodes (453 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 16:22:29 2012 Optimize a model with 601 rows, 643 columns and 1803 nonzeros Presolve removed 30 rows and 90 columns Presolve time: 0.00s Presolved: 571 rows, 553 columns, 1713 nonzeros Variable types: 0 continuous, 553 integer (553 binary) Root relaxation: objective 0.000000e+00, 220 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 (220 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