current bounds on the number of colors: 0 -- 125 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:00 2012 Optimize a model with 4341 rows, 7818 columns and 20398 nonzeros Presolve removed 43 rows and 2666 columns Presolve time: 0.06s Presolved: 4298 rows, 5152 columns, 17732 nonzeros Variable types: 0 continuous, 5152 integer (5152 binary) Root relaxation: objective 0.000000e+00, 136 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 (136 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:00 2012 Optimize a model with 2233 rows, 3943 columns and 10199 nonzeros Presolve removed 43 rows and 1333 columns Presolve time: 0.02s Presolved: 2190 rows, 2610 columns, 8866 nonzeros Variable types: 0 continuous, 2610 integer (2610 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 0.02 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:00 2012 Optimize a model with 1145 rows, 1943 columns and 4935 nonzeros Presolve removed 43 rows and 645 columns Presolve time: 0.01s Presolved: 1102 rows, 1298 columns, 4290 nonzeros Variable types: 0 continuous, 1298 integer (1298 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (137 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:00 2012 Optimize a model with 601 rows, 943 columns and 2303 nonzeros Presolve removed 43 rows and 301 columns Presolve time: 0.00s Presolved: 558 rows, 642 columns, 2002 nonzeros Variable types: 0 continuous, 642 integer (642 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (137 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 16:17:00 2012 Optimize a model with 329 rows, 443 columns and 987 nonzeros Presolve removed 43 rows and 129 columns Presolve time: 0.00s Presolved: 286 rows, 314 columns, 858 nonzeros Variable types: 0 continuous, 314 integer (314 binary) Root relaxation: objective 0.000000e+00, 120 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 (120 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 16:17:00 2012 Optimize a model with 193 rows, 193 columns and 329 nonzeros Presolve removed 193 rows and 193 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 16:17:00 2012 Optimize a model with 261 rows, 318 columns and 658 nonzeros Presolve removed 131 rows and 177 columns Presolve time: 0.00s Presolved: 130 rows, 141 columns, 390 nonzeros Variable types: 0 continuous, 141 integer (141 binary) Root relaxation: objective 0.000000e+00, 53 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 (53 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: 2