current bounds on the number of colors: 0 -- 228 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:25 2012 Optimize a model with 32148 rows, 26272 columns and 121752 nonzeros Presolve removed 18 rows and 2052 columns Presolve time: 0.15s Presolved: 32130 rows, 24220 columns, 119700 nonzeros Variable types: 0 continuous, 24220 integer (24220 binary) Root relaxation: objective 0.000000e+00, 408 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 (408 simplex iterations) in 0.18 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 -- 114 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:25 2012 Optimize a model with 16188 rows, 13276 columns and 60876 nonzeros Presolve removed 18 rows and 1026 columns Presolve time: 0.12s Presolved: 16170 rows, 12250 columns, 59850 nonzeros Variable types: 0 continuous, 12250 integer (12250 binary) Root relaxation: objective 0.000000e+00, 410 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 (410 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:26 2012 Optimize a model with 8068 rows, 6664 columns and 29904 nonzeros Presolve removed 18 rows and 504 columns Presolve time: 0.05s Presolved: 8050 rows, 6160 columns, 29400 nonzeros Variable types: 0 continuous, 6160 integer (6160 binary) Root relaxation: objective 0.000000e+00, 394 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 (394 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:26 2012 Optimize a model with 4148 rows, 3472 columns and 14952 nonzeros Presolve removed 18 rows and 252 columns Presolve time: 0.02s Presolved: 4130 rows, 3220 columns, 14700 nonzeros Variable types: 0 continuous, 3220 integer (3220 binary) Root relaxation: objective 0.000000e+00, 432 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 (432 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:26 2012 Optimize a model with 2188 rows, 1876 columns and 7476 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2170 rows, 1750 columns, 7350 nonzeros Variable types: 0 continuous, 1750 integer (1750 binary) Root relaxation: objective 0.000000e+00, 395 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 (395 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 16:39:26 2012 Optimize a model with 1068 rows, 964 columns and 3204 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1050 rows, 910 columns, 3150 nonzeros Variable types: 0 continuous, 910 integer (910 binary) Root relaxation: objective 0.000000e+00, 388 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 (388 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 16:39:26 2012 Optimize a model with 508 rows, 508 columns and 1068 nonzeros Presolve removed 508 rows and 508 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 16:39:26 2012 Optimize a model with 788 rows, 736 columns and 2136 nonzeros Presolve removed 236 rows and 258 columns Presolve time: 0.00s Presolved: 552 rows, 478 columns, 1656 nonzeros Variable types: 0 continuous, 478 integer (478 binary) Root relaxation: objective 0.000000e+00, 232 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 0 202 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (716 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