current bounds on the number of colors: 0 -- 247 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:07 2012 Optimize a model with 37885 rows, 30687 columns and 143295 nonzeros Presolve removed 18 rows and 2214 columns Presolve time: 0.19s Presolved: 37867 rows, 28473 columns, 141081 nonzeros Variable types: 0 continuous, 28473 integer (28473 binary) Root relaxation: objective 0.000000e+00, 436 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 (436 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 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:08 2012 Optimize a model with 18913 rows, 15373 columns and 71065 nonzeros Presolve removed 18 rows and 1098 columns Presolve time: 0.13s Presolved: 18895 rows, 14275 columns, 69967 nonzeros Variable types: 0 continuous, 14275 integer (14275 binary) Root relaxation: objective 0.000000e+00, 435 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 (435 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 16:47:08 2012 Optimize a model with 9427 rows, 7716 columns and 34950 nonzeros Presolve removed 18 rows and 540 columns Presolve time: 0.06s Presolved: 9409 rows, 7176 columns, 34410 nonzeros Variable types: 0 continuous, 7176 integer (7176 binary) Root relaxation: objective 0.000000e+00, 439 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 (439 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 16:47:08 2012 Optimize a model with 4837 rows, 4011 columns and 17475 nonzeros Presolve removed 18 rows and 270 columns Presolve time: 0.02s Presolved: 4819 rows, 3741 columns, 17205 nonzeros Variable types: 0 continuous, 3741 integer (3741 binary) Root relaxation: objective 0.000000e+00, 452 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 (700 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 16:47:08 2012 Optimize a model with 2389 rows, 2035 columns and 8155 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2371 rows, 1909 columns, 8029 nonzeros Variable types: 0 continuous, 1909 integer (1909 binary) Root relaxation: objective 0.000000e+00, 419 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 (419 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 16:47:08 2012 Optimize a model with 1165 rows, 1047 columns and 3495 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1147 rows, 993 columns, 3441 nonzeros Variable types: 0 continuous, 993 integer (993 binary) Root relaxation: objective 0.000000e+00, 442 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 (609 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 16:47:08 2012 Optimize a model with 553 rows, 553 columns and 1165 nonzeros Presolve removed 553 rows and 553 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 16:47:09 2012 Optimize a model with 859 rows, 800 columns and 2330 nonzeros Presolve removed 251 rows and 271 columns Presolve time: 0.00s Presolved: 608 rows, 529 columns, 1824 nonzeros Variable types: 0 continuous, 529 integer (529 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 0.00000 0 225 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (871 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