current bounds on the number of colors: 0 -- 147 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:31 2012 Optimize a model with 8761 rows, 10849 columns and 36573 nonzeros Presolve removed 27 rows and 1971 columns Presolve time: 0.11s Presolved: 8734 rows, 8878 columns, 34602 nonzeros Variable types: 0 continuous, 8878 integer (8878 binary) Root relaxation: objective 0.000000e+00, 206 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 (206 simplex iterations) in 0.11 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 -- 73 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:31 2012 Optimize a model with 4395 rows, 5410 columns and 18036 nonzeros Presolve removed 27 rows and 972 columns Presolve time: 0.04s Presolved: 4368 rows, 4438 columns, 17064 nonzeros Variable types: 0 continuous, 4438 integer (4438 binary) Root relaxation: objective 0.000000e+00, 208 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 (208 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 -- 36 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:31 2012 Optimize a model with 2271 rows, 2764 columns and 9018 nonzeros Presolve removed 27 rows and 486 columns Presolve time: 0.01s Presolved: 2244 rows, 2278 columns, 8532 nonzeros Variable types: 0 continuous, 2278 integer (2278 binary) Root relaxation: objective 0.000000e+00, 209 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 (209 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:31 2012 Optimize a model with 1209 rows, 1441 columns and 4509 nonzeros Presolve removed 27 rows and 243 columns Presolve time: 0.00s Presolved: 1182 rows, 1198 columns, 4266 nonzeros Variable types: 0 continuous, 1198 integer (1198 binary) Root relaxation: objective 0.000000e+00, 205 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 (205 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:31 2012 Optimize a model with 619 rows, 706 columns and 2004 nonzeros Presolve removed 27 rows and 108 columns Presolve time: 0.00s Presolved: 592 rows, 598 columns, 1896 nonzeros Variable types: 0 continuous, 598 integer (598 binary) Root relaxation: objective 0.000000e+00, 177 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 (177 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:31 2012 Optimize a model with 383 rows, 412 columns and 1002 nonzeros Presolve removed 155 rows and 186 columns Presolve time: 0.00s Presolved: 228 rows, 226 columns, 684 nonzeros Variable types: 0 continuous, 226 integer (226 binary) Root relaxation: objective 0.000000e+00, 117 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 94 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (365 simplex iterations) in 0.00 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:31 2012 Optimize a model with 501 rows, 559 columns and 1503 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 474 rows, 478 columns, 1422 nonzeros Variable types: 0 continuous, 478 integer (478 binary) Root relaxation: objective 0.000000e+00, 202 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 (202 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