current bounds on the number of colors: 0 -- 163 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:57 2012 Optimize a model with 11584 rows, 13344 columns and 47466 nonzeros Presolve removed 25 rows and 2025 columns Presolve time: 0.12s Presolved: 11559 rows, 11319 columns, 45441 nonzeros Variable types: 0 continuous, 11319 integer (11319 binary) Root relaxation: objective 0.000000e+00, 249 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 (364 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 -- 81 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:57 2012 Optimize a model with 5803 rows, 6661 columns and 23440 nonzeros Presolve removed 25 rows and 1000 columns Presolve time: 0.05s Presolved: 5778 rows, 5661 columns, 22440 nonzeros Variable types: 0 continuous, 5661 integer (5661 binary) Root relaxation: objective 0.000000e+00, 247 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 (358 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 -- 40 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:58 2012 Optimize a model with 2983 rows, 3401 columns and 11720 nonzeros Presolve removed 25 rows and 500 columns Presolve time: 0.02s Presolved: 2958 rows, 2901 columns, 11220 nonzeros Variable types: 0 continuous, 2901 integer (2901 binary) Root relaxation: objective 0.000000e+00, 243 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 (359 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 16:21:58 2012 Optimize a model with 1573 rows, 1771 columns and 5860 nonzeros Presolve removed 25 rows and 250 columns Presolve time: 0.01s Presolved: 1548 rows, 1521 columns, 5610 nonzeros Variable types: 0 continuous, 1521 integer (1521 binary) Root relaxation: objective 0.000000e+00, 247 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 (371 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 16:21:58 2012 Optimize a model with 868 rows, 956 columns and 2930 nonzeros Presolve removed 25 rows and 125 columns Presolve time: 0.00s Presolved: 843 rows, 831 columns, 2805 nonzeros Variable types: 0 continuous, 831 integer (831 binary) Root relaxation: objective 0.000000e+00, 229 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 (229 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 16:21:58 2012 Optimize a model with 445 rows, 467 columns and 1172 nonzeros Presolve removed 183 rows and 218 columns Presolve time: 0.00s Presolved: 262 rows, 249 columns, 786 nonzeros Variable types: 0 continuous, 249 integer (249 binary) Root relaxation: objective 0.000000e+00, 134 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 0 111 - 0.00000 - - 0s Explored 0 nodes (368 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 16:21:58 2012 Optimize a model with 586 rows, 630 columns and 1758 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 561 rows, 555 columns, 1683 nonzeros Variable types: 0 continuous, 555 integer (555 binary) Root relaxation: objective 0.000000e+00, 241 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 (241 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