current bounds on the number of colors: 0 -- 190 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:27 2012 Optimize a model with 16530 rows, 18222 columns and 67070 nonzeros Presolve removed 21 rows and 1995 columns Presolve time: 0.11s Presolved: 16509 rows, 16227 columns, 65075 nonzeros Variable types: 0 continuous, 16227 integer (16227 binary) Root relaxation: objective 0.000000e+00, 304 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 (304 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 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:28 2012 Optimize a model with 8274 rows, 9102 columns and 33182 nonzeros Presolve removed 21 rows and 987 columns Presolve time: 0.08s Presolved: 8253 rows, 8115 columns, 32195 nonzeros Variable types: 0 continuous, 8115 integer (8115 binary) Root relaxation: objective 0.000000e+00, 304 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 (304 simplex iterations) in 0.09 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:28 2012 Optimize a model with 4146 rows, 4542 columns and 16238 nonzeros Presolve removed 21 rows and 483 columns Presolve time: 0.03s Presolved: 4125 rows, 4059 columns, 15755 nonzeros Variable types: 0 continuous, 4059 integer (4059 binary) Root relaxation: objective 0.000000e+00, 303 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 (303 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:28 2012 Optimize a model with 2082 rows, 2262 columns and 7766 nonzeros Presolve removed 21 rows and 231 columns Presolve time: 0.01s Presolved: 2061 rows, 2031 columns, 7535 nonzeros Variable types: 0 continuous, 2031 integer (2031 binary) Root relaxation: objective 0.000000e+00, 285 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:28 2012 Optimize a model with 1050 rows, 1122 columns and 3530 nonzeros Presolve removed 21 rows and 105 columns Presolve time: 0.00s Presolved: 1029 rows, 1017 columns, 3425 nonzeros Variable types: 0 continuous, 1017 integer (1017 binary) Root relaxation: objective 0.000000e+00, 266 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 (266 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 16:27:28 2012 Optimize a model with 534 rows, 552 columns and 1412 nonzeros Presolve removed 200 rows and 226 columns Presolve time: 0.00s Presolved: 334 rows, 326 columns, 1002 nonzeros Variable types: 0 continuous, 326 integer (326 binary) Root relaxation: objective 0.000000e+00, 169 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 0 143 - 0.00000 - - 0s Explored 0 nodes (510 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:27:28 2012 Optimize a model with 706 rows, 742 columns and 2118 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 685 rows, 679 columns, 2055 nonzeros Variable types: 0 continuous, 679 integer (679 binary) Root relaxation: objective 0.000000e+00, 281 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 (281 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