current bounds on the number of colors: 0 -- 178 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:51 2012 Optimize a model with 17088 rows, 16032 columns and 66572 nonzeros Presolve removed 18 rows and 1602 columns Presolve time: 0.12s Presolved: 17070 rows, 14430 columns, 64970 nonzeros Variable types: 0 continuous, 14430 integer (14430 binary) Root relaxation: objective 0.000000e+00, 306 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 (306 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 -- 89 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:51 2012 Optimize a model with 8538 rows, 8022 columns and 32912 nonzeros Presolve removed 18 rows and 792 columns Presolve time: 0.07s Presolved: 8520 rows, 7230 columns, 32120 nonzeros Variable types: 0 continuous, 7230 integer (7230 binary) Root relaxation: objective 0.000000e+00, 305 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 (305 simplex iterations) in 0.08 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:51 2012 Optimize a model with 4358 rows, 4106 columns and 16456 nonzeros Presolve removed 18 rows and 396 columns Presolve time: 0.02s Presolved: 4340 rows, 3710 columns, 16060 nonzeros Variable types: 0 continuous, 3710 integer (3710 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 (451 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:51 2012 Optimize a model with 2268 rows, 2148 columns and 8228 nonzeros Presolve removed 18 rows and 198 columns Presolve time: 0.01s Presolved: 2250 rows, 1950 columns, 8030 nonzeros Variable types: 0 continuous, 1950 integer (1950 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 0.01 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:51 2012 Optimize a model with 1128 rows, 1080 columns and 3740 nonzeros Presolve removed 18 rows and 90 columns Presolve time: 0.00s Presolved: 1110 rows, 990 columns, 3650 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Root relaxation: objective 0.000000e+00, 275 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 (275 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:51 2012 Optimize a model with 558 rows, 546 columns and 1496 nonzeros Presolve removed 182 rows and 202 columns Presolve time: 0.00s Presolved: 376 rows, 344 columns, 1128 nonzeros Variable types: 0 continuous, 344 integer (344 binary) Root relaxation: objective 0.000000e+00, 170 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 0 148 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (544 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:51 2012 Optimize a model with 748 rows, 724 columns and 2244 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 730 rows, 670 columns, 2190 nonzeros Variable types: 0 continuous, 670 integer (670 binary) Root relaxation: objective 0.000000e+00, 275 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 (275 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% optimal solution found: number of colors: 3