current bounds on the number of colors: 0 -- 249 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:17 2012 Optimize a model with 39805 rows, 31195 columns and 149544 nonzeros Presolve removed 24 rows and 2976 columns Presolve time: 0.20s Presolved: 39781 rows, 28219 columns, 146568 nonzeros Variable types: 0 continuous, 28219 integer (28219 binary) Root relaxation: objective 0.000000e+00, 442 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 (442 simplex iterations) in 0.24 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 -- 124 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:18 2012 Optimize a model with 20027 rows, 15757 columns and 74772 nonzeros Presolve removed 24 rows and 1488 columns Presolve time: 0.13s Presolved: 20003 rows, 14269 columns, 73284 nonzeros Variable types: 0 continuous, 14269 integer (14269 binary) Root relaxation: objective 0.000000e+00, 447 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 (447 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:19 2012 Optimize a model with 10138 rows, 8038 columns and 37386 nonzeros Presolve removed 24 rows and 744 columns Presolve time: 0.06s Presolved: 10114 rows, 7294 columns, 36642 nonzeros Variable types: 0 continuous, 7294 integer (7294 binary) Root relaxation: objective 0.000000e+00, 438 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 (438 simplex iterations) in 0.07 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 16:48:19 2012 Optimize a model with 5034 rows, 4054 columns and 18090 nonzeros Presolve removed 24 rows and 360 columns Presolve time: 0.02s Presolved: 5010 rows, 3694 columns, 17730 nonzeros Variable types: 0 continuous, 3694 integer (3694 binary) Root relaxation: objective 0.000000e+00, 468 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 (753 simplex iterations) in 0.04 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 16:48:19 2012 Optimize a model with 2482 rows, 2062 columns and 8442 nonzeros Presolve removed 24 rows and 168 columns Presolve time: 0.01s Presolved: 2458 rows, 1894 columns, 8274 nonzeros Variable types: 0 continuous, 1894 integer (1894 binary) Root relaxation: objective 0.000000e+00, 445 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 (647 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:19 2012 Optimize a model with 1206 rows, 1066 columns and 3618 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 1182 rows, 994 columns, 3546 nonzeros Variable types: 0 continuous, 994 integer (994 binary) Root relaxation: objective 0.000000e+00, 495 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 (727 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 16:48:19 2012 Optimize a model with 568 rows, 568 columns and 1206 nonzeros Presolve removed 568 rows and 568 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 16:48:19 2012 Optimize a model with 887 rows, 817 columns and 2412 nonzeros Presolve removed 249 rows and 273 columns Presolve time: 0.00s Presolved: 638 rows, 544 columns, 1914 nonzeros Variable types: 0 continuous, 544 integer (544 binary) Root relaxation: objective 0.000000e+00, 263 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 0 221 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (904 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