current bounds on the number of colors: 0 -- 143 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:55 2012 Optimize a model with 8308 rows, 10268 columns and 34648 nonzeros Presolve removed 23 rows and 1633 columns Presolve time: 0.10s Presolved: 8285 rows, 8635 columns, 33015 nonzeros Variable types: 0 continuous, 8635 integer (8635 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (194 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 -- 71 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:56 2012 Optimize a model with 4168 rows, 5120 columns and 17080 nonzeros Presolve removed 23 rows and 805 columns Presolve time: 0.03s Presolved: 4145 rows, 4315 columns, 16275 nonzeros Variable types: 0 continuous, 4315 integer (4315 binary) Root relaxation: objective 0.000000e+00, 195 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 (195 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 -- 35 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:56 2012 Optimize a model with 2098 rows, 2546 columns and 8296 nonzeros Presolve removed 23 rows and 391 columns Presolve time: 0.01s Presolved: 2075 rows, 2155 columns, 7905 nonzeros Variable types: 0 continuous, 2155 integer (2155 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (194 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 -- 17 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:56 2012 Optimize a model with 1063 rows, 1259 columns and 3904 nonzeros Presolve removed 23 rows and 184 columns Presolve time: 0.00s Presolved: 1040 rows, 1075 columns, 3720 nonzeros Variable types: 0 continuous, 1075 integer (1075 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 0.01 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:56 2012 Optimize a model with 603 rows, 687 columns and 1952 nonzeros Presolve removed 23 rows and 92 columns Presolve time: 0.00s Presolved: 580 rows, 595 columns, 1860 nonzeros Variable types: 0 continuous, 595 integer (595 binary) Root relaxation: objective 0.000000e+00, 185 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 (185 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 16:18:56 2012 Optimize a model with 373 rows, 401 columns and 976 nonzeros Presolve removed 157 rows and 187 columns Presolve time: 0.00s Presolved: 216 rows, 214 columns, 648 nonzeros Variable types: 0 continuous, 214 integer (214 binary) Root relaxation: objective 0.000000e+00, 119 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 96 - 0.00000 - - 0s Explored 0 nodes (372 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 16:18:56 2012 Optimize a model with 488 rows, 544 columns and 1464 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 465 rows, 475 columns, 1395 nonzeros Variable types: 0 continuous, 475 integer (475 binary) Root relaxation: objective 0.000000e+00, 182 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 (182 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