current bounds on the number of colors: 0 -- 236 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:21 2012 Optimize a model with 35990 rows, 28151 columns and 135110 nonzeros Presolve removed 11 rows and 1298 columns Presolve time: 0.18s Presolved: 35979 rows, 26853 columns, 133812 nonzeros Variable types: 0 continuous, 26853 integer (26853 binary) Root relaxation: objective 0.000000e+00, 439 iterations, 0.02 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 (439 simplex iterations) in 0.21 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 -- 118 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:22 2012 Optimize a model with 18113 rows, 14227 columns and 67555 nonzeros Presolve removed 11 rows and 649 columns Presolve time: 0.13s Presolved: 18102 rows, 13578 columns, 66906 nonzeros Variable types: 0 continuous, 13578 integer (13578 binary) Root relaxation: objective 0.000000e+00, 437 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 (437 simplex iterations) in 0.15 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:22 2012 Optimize a model with 9023 rows, 7147 columns and 33205 nonzeros Presolve removed 11 rows and 319 columns Presolve time: 0.06s Presolved: 9012 rows, 6828 columns, 32886 nonzeros Variable types: 0 continuous, 6828 integer (6828 binary) Root relaxation: objective 0.000000e+00, 436 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 (436 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:23 2012 Optimize a model with 4478 rows, 3607 columns and 16030 nonzeros Presolve removed 11 rows and 154 columns Presolve time: 0.02s Presolved: 4467 rows, 3453 columns, 15876 nonzeros Variable types: 0 continuous, 3453 integer (3453 binary) Root relaxation: objective 0.000000e+00, 458 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 (719 simplex iterations) in 0.03 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:23 2012 Optimize a model with 2357 rows, 1955 columns and 8015 nonzeros Presolve removed 11 rows and 77 columns Presolve time: 0.01s Presolved: 2346 rows, 1878 columns, 7938 nonzeros Variable types: 0 continuous, 1878 integer (1878 binary) Root relaxation: objective 0.000000e+00, 410 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 (583 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:23 2012 Optimize a model with 1145 rows, 1011 columns and 3435 nonzeros Presolve removed 11 rows and 33 columns Presolve time: 0.00s Presolved: 1134 rows, 978 columns, 3402 nonzeros Variable types: 0 continuous, 978 integer (978 binary) Root relaxation: objective 0.000000e+00, 459 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 (766 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:23 2012 Optimize a model with 539 rows, 539 columns and 1145 nonzeros Presolve removed 539 rows and 539 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 16:42:23 2012 Optimize a model with 842 rows, 775 columns and 2290 nonzeros Presolve removed 236 rows and 247 columns Presolve time: 0.00s Presolved: 606 rows, 528 columns, 1818 nonzeros Variable types: 0 continuous, 528 integer (528 binary) Root relaxation: objective 0.000000e+00, 265 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 0 222 - 0.00000 - - 0s Explored 0 nodes (839 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3