current bounds on the number of colors: 0 -- 195 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:40 2012 Optimize a model with 20759 rows, 19127 columns and 80607 nonzeros Presolve removed 21 rows and 2037 columns Presolve time: 0.13s Presolved: 20738 rows, 17090 columns, 78570 nonzeros Variable types: 0 continuous, 17090 integer (17090 binary) Root relaxation: objective 0.000000e+00, 316 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 (316 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 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:40 2012 Optimize a model with 10371 rows, 9572 columns and 39888 nonzeros Presolve removed 21 rows and 1008 columns Presolve time: 0.09s Presolved: 10350 rows, 8564 columns, 38880 nonzeros Variable types: 0 continuous, 8564 integer (8564 binary) Root relaxation: objective 0.000000e+00, 318 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 (318 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 16:28:40 2012 Optimize a model with 5283 rows, 4892 columns and 19944 nonzeros Presolve removed 21 rows and 504 columns Presolve time: 0.03s Presolved: 5262 rows, 4388 columns, 19440 nonzeros Variable types: 0 continuous, 4388 integer (4388 binary) Root relaxation: objective 0.000000e+00, 317 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 (317 simplex iterations) in 0.04 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 16:28:40 2012 Optimize a model with 2739 rows, 2552 columns and 9972 nonzeros Presolve removed 21 rows and 252 columns Presolve time: 0.01s Presolved: 2718 rows, 2300 columns, 9720 nonzeros Variable types: 0 continuous, 2300 integer (2300 binary) Root relaxation: objective 0.000000e+00, 322 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 (478 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:41 2012 Optimize a model with 1467 rows, 1382 columns and 4986 nonzeros Presolve removed 21 rows and 126 columns Presolve time: 0.01s Presolved: 1446 rows, 1256 columns, 4860 nonzeros Variable types: 0 continuous, 1256 integer (1256 binary) Root relaxation: objective 0.000000e+00, 325 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 (325 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 16:28:41 2012 Optimize a model with 831 rows, 797 columns and 2493 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 810 rows, 734 columns, 2430 nonzeros Variable types: 0 continuous, 734 integer (734 binary) Root relaxation: objective 0.000000e+00, 303 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 (303 simplex iterations) in 0.00 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 16:28:41 2012 Optimize a model with 407 rows, 407 columns and 831 nonzeros Presolve removed 407 rows and 407 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 16:28:41 2012 Optimize a model with 619 rows, 602 columns and 1662 nonzeros Presolve removed 199 rows and 222 columns Presolve time: 0.00s Presolved: 420 rows, 380 columns, 1260 nonzeros Variable types: 0 continuous, 380 integer (380 binary) Root relaxation: objective 0.000000e+00, 194 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 0 163 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (606 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