current bounds on the number of colors: 0 -- 166 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:26 2012 Optimize a model with 11703 rows, 13917 columns and 48389 nonzeros Presolve removed 28 rows and 2324 columns Presolve time: 0.12s Presolved: 11675 rows, 11593 columns, 46065 nonzeros Variable types: 0 continuous, 11593 integer (11593 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 0.13 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 16:22:27 2012 Optimize a model with 5865 rows, 6945 columns and 23903 nonzeros Presolve removed 28 rows and 1148 columns Presolve time: 0.05s Presolved: 5837 rows, 5797 columns, 22755 nonzeros Variable types: 0 continuous, 5797 integer (5797 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 16:22:27 2012 Optimize a model with 2946 rows, 3459 columns and 11660 nonzeros Presolve removed 28 rows and 560 columns Presolve time: 0.02s Presolved: 2918 rows, 2899 columns, 11100 nonzeros Variable types: 0 continuous, 2899 integer (2899 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 0.02 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 16:22:27 2012 Optimize a model with 1556 rows, 1799 columns and 5830 nonzeros Presolve removed 28 rows and 280 columns Presolve time: 0.01s Presolved: 1528 rows, 1519 columns, 5550 nonzeros Variable types: 0 continuous, 1519 integer (1519 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 0.01 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 16:22:27 2012 Optimize a model with 861 rows, 969 columns and 2915 nonzeros Presolve removed 28 rows and 140 columns Presolve time: 0.00s Presolved: 833 rows, 829 columns, 2775 nonzeros Variable types: 0 continuous, 829 integer (829 binary) Root relaxation: objective 0.000000e+00, 214 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 (285 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:27 2012 Optimize a model with 444 rows, 471 columns and 1166 nonzeros Presolve removed 176 rows and 209 columns Presolve time: 0.00s Presolved: 268 rows, 262 columns, 804 nonzeros Variable types: 0 continuous, 262 integer (262 binary) Root relaxation: objective 0.000000e+00, 137 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 0 122 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (454 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 16:22:27 2012 Optimize a model with 583 rows, 637 columns and 1749 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 555 rows, 553 columns, 1665 nonzeros Variable types: 0 continuous, 553 integer (553 binary) Root relaxation: objective 0.000000e+00, 222 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 (222 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