current bounds on the number of colors: 0 -- 245 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:31 2012 Optimize a model with 39773 rows, 30214 columns and 148474 nonzeros Presolve removed 18 rows and 2196 columns Presolve time: 0.20s Presolved: 39755 rows, 28018 columns, 146278 nonzeros Variable types: 0 continuous, 28018 integer (28018 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 simplex iterations) in 0.23 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 -- 122 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:32 2012 Optimize a model with 20009 rows, 15269 columns and 74237 nonzeros Presolve removed 18 rows and 1098 columns Presolve time: 0.13s Presolved: 19991 rows, 14171 columns, 73139 nonzeros Variable types: 0 continuous, 14171 integer (14171 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:32 2012 Optimize a model with 9965 rows, 7674 columns and 36510 nonzeros Presolve removed 18 rows and 540 columns Presolve time: 0.06s Presolved: 9947 rows, 7134 columns, 35970 nonzeros Variable types: 0 continuous, 7134 integer (7134 binary) Root relaxation: objective 0.000000e+00, 432 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 (432 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:32 2012 Optimize a model with 5105 rows, 3999 columns and 18255 nonzeros Presolve removed 18 rows and 270 columns Presolve time: 0.02s Presolved: 5087 rows, 3729 columns, 17985 nonzeros Variable types: 0 continuous, 3729 integer (3729 binary) Root relaxation: objective 0.000000e+00, 438 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 (438 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:32 2012 Optimize a model with 2513 rows, 2039 columns and 8519 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2495 rows, 1913 columns, 8393 nonzeros Variable types: 0 continuous, 1913 integer (1913 binary) Root relaxation: objective 0.000000e+00, 433 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 (433 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 16:46:33 2012 Optimize a model with 1217 rows, 1059 columns and 3651 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1199 rows, 1005 columns, 3597 nonzeros Variable types: 0 continuous, 1005 integer (1005 binary) Root relaxation: objective 0.000000e+00, 516 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 (742 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 16:46:33 2012 Optimize a model with 569 rows, 569 columns and 1217 nonzeros Presolve removed 569 rows and 569 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 16:46:33 2012 Optimize a model with 893 rows, 814 columns and 2434 nonzeros Presolve removed 249 rows and 269 columns Presolve time: 0.00s Presolved: 644 rows, 545 columns, 1932 nonzeros Variable types: 0 continuous, 545 integer (545 binary) Root relaxation: objective 0.000000e+00, 256 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 0 223 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (872 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