current bounds on the number of colors: 0 -- 142 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:48 2012 Optimize a model with 8023 rows, 10193 columns and 33725 nonzeros Presolve removed 23 rows and 1633 columns Presolve time: 0.11s Presolved: 8000 rows, 8560 columns, 32092 nonzeros Variable types: 0 continuous, 8560 integer (8560 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 0.12 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 16:18:48 2012 Optimize a model with 4027 rows, 5081 columns and 16625 nonzeros Presolve removed 23 rows and 805 columns Presolve time: 0.03s Presolved: 4004 rows, 4276 columns, 15820 nonzeros Variable types: 0 continuous, 4276 integer (4276 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 0.04 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 16:18:48 2012 Optimize a model with 2029 rows, 2525 columns and 8075 nonzeros Presolve removed 23 rows and 391 columns Presolve time: 0.01s Presolved: 2006 rows, 2134 columns, 7684 nonzeros Variable types: 0 continuous, 2134 integer (2134 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 -- 17 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:18:48 2012 Optimize a model with 1030 rows, 1247 columns and 3800 nonzeros Presolve removed 23 rows and 184 columns Presolve time: 0.00s Presolved: 1007 rows, 1063 columns, 3616 nonzeros Variable types: 0 continuous, 1063 integer (1063 binary) Root relaxation: objective 0.000000e+00, 198 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 (198 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 16:18:48 2012 Optimize a model with 586 rows, 679 columns and 1900 nonzeros Presolve removed 23 rows and 92 columns Presolve time: 0.00s Presolved: 563 rows, 587 columns, 1808 nonzeros Variable types: 0 continuous, 587 integer (587 binary) Root relaxation: objective 0.000000e+00, 192 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 (192 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 16:18:48 2012 Optimize a model with 364 rows, 395 columns and 950 nonzeros Presolve removed 152 rows and 180 columns Presolve time: 0.00s Presolved: 212 rows, 215 columns, 636 nonzeros Variable types: 0 continuous, 215 integer (215 binary) Root relaxation: objective 0.000000e+00, 103 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 64 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (322 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 16:18:48 2012 Optimize a model with 475 rows, 537 columns and 1425 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 452 rows, 468 columns, 1356 nonzeros Variable types: 0 continuous, 468 integer (468 binary) Root relaxation: objective 0.000000e+00, 184 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 (184 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