current bounds on the number of colors: 0 -- 234 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:47 2012 Optimize a model with 34281 rows, 27669 columns and 129519 nonzeros Presolve removed 27 rows and 3159 columns Presolve time: 0.16s Presolved: 34254 rows, 24510 columns, 126360 nonzeros Variable types: 0 continuous, 24510 integer (24510 binary) Root relaxation: objective 0.000000e+00, 389 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 (389 simplex iterations) in 0.20 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:48 2012 Optimize a model with 17112 rows, 13863 columns and 64206 nonzeros Presolve removed 27 rows and 1566 columns Presolve time: 0.12s Presolved: 17085 rows, 12297 columns, 62640 nonzeros Variable types: 0 continuous, 12297 integer (12297 binary) Root relaxation: objective 0.000000e+00, 389 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 (389 simplex iterations) in 0.14 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:48 2012 Optimize a model with 8673 rows, 7077 columns and 32103 nonzeros Presolve removed 27 rows and 783 columns Presolve time: 0.05s Presolved: 8646 rows, 6294 columns, 31320 nonzeros Variable types: 0 continuous, 6294 integer (6294 binary) Root relaxation: objective 0.000000e+00, 390 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 (390 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 16:41:48 2012 Optimize a model with 4308 rows, 3567 columns and 15498 nonzeros Presolve removed 27 rows and 378 columns Presolve time: 0.02s Presolved: 4281 rows, 3189 columns, 15120 nonzeros Variable types: 0 continuous, 3189 integer (3189 binary) Root relaxation: objective 0.000000e+00, 409 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 (658 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 16:41:48 2012 Optimize a model with 2271 rows, 1929 columns and 7749 nonzeros Presolve removed 27 rows and 189 columns Presolve time: 0.01s Presolved: 2244 rows, 1740 columns, 7560 nonzeros Variable types: 0 continuous, 1740 integer (1740 binary) Root relaxation: objective 0.000000e+00, 409 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 (662 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 16:41:48 2012 Optimize a model with 1107 rows, 993 columns and 3321 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 1080 rows, 912 columns, 3240 nonzeros Variable types: 0 continuous, 912 integer (912 binary) Root relaxation: objective 0.000000e+00, 431 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 (650 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 16:41:48 2012 Optimize a model with 525 rows, 525 columns and 1107 nonzeros Presolve removed 525 rows and 525 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 16:41:48 2012 Optimize a model with 816 rows, 759 columns and 2214 nonzeros Presolve removed 234 rows and 261 columns Presolve time: 0.00s Presolved: 582 rows, 498 columns, 1746 nonzeros Variable types: 0 continuous, 498 integer (498 binary) Root relaxation: objective 0.000000e+00, 239 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 0 207 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (785 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