current bounds on the number of colors: 0 -- 195 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:38 2012 Optimize a model with 19304 rows, 19112 columns and 76242 nonzeros Presolve removed 31 rows and 3007 columns Presolve time: 0.12s Presolved: 19273 rows, 16105 columns, 73235 nonzeros Variable types: 0 continuous, 16105 integer (16105 binary) Root relaxation: objective 0.000000e+00, 310 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 (310 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 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:38 2012 Optimize a model with 9651 rows, 9557 columns and 37728 nonzeros Presolve removed 31 rows and 1488 columns Presolve time: 0.09s Presolved: 9620 rows, 8069 columns, 36240 nonzeros Variable types: 0 continuous, 8069 integer (8069 binary) Root relaxation: objective 0.000000e+00, 311 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 (311 simplex iterations) in 0.10 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:39 2012 Optimize a model with 4923 rows, 4877 columns and 18864 nonzeros Presolve removed 31 rows and 744 columns Presolve time: 0.03s Presolved: 4892 rows, 4133 columns, 18120 nonzeros Variable types: 0 continuous, 4133 integer (4133 binary) Root relaxation: objective 0.000000e+00, 308 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 (308 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:39 2012 Optimize a model with 2559 rows, 2537 columns and 9432 nonzeros Presolve removed 31 rows and 372 columns Presolve time: 0.01s Presolved: 2528 rows, 2165 columns, 9060 nonzeros Variable types: 0 continuous, 2165 integer (2165 binary) Root relaxation: objective 0.000000e+00, 299 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 (299 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:39 2012 Optimize a model with 1377 rows, 1367 columns and 4716 nonzeros Presolve removed 31 rows and 186 columns Presolve time: 0.00s Presolved: 1346 rows, 1181 columns, 4530 nonzeros Variable types: 0 continuous, 1181 integer (1181 binary) Root relaxation: objective 0.000000e+00, 293 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 (293 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:39 2012 Optimize a model with 786 rows, 782 columns and 2358 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 755 rows, 689 columns, 2265 nonzeros Variable types: 0 continuous, 689 integer (689 binary) Root relaxation: objective 0.000000e+00, 293 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 (401 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 16:28:39 2012 Optimize a model with 392 rows, 392 columns and 786 nonzeros Presolve removed 392 rows and 392 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 16:28:39 2012 Optimize a model with 589 rows, 587 columns and 1572 nonzeros Presolve removed 199 rows and 232 columns Presolve time: 0.00s Presolved: 390 rows, 355 columns, 1170 nonzeros Variable types: 0 continuous, 355 integer (355 binary) Root relaxation: objective 0.000000e+00, 191 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 0 160 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (602 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