current bounds on the number of colors: 0 -- 89 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:28 2012 Optimize a model with 18041 rows, 4324 columns and 57772 nonzeros Presolve time: 0.10s Presolved: 18041 rows, 4324 columns, 57772 nonzeros Variable types: 0 continuous, 4324 integer (4324 binary) Root relaxation: objective 0.000000e+00, 224 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 (444 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 -- 44 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:28 2012 Optimize a model with 9065 rows, 2366 columns and 28886 nonzeros Presolve time: 0.03s Presolved: 9065 rows, 2366 columns, 28886 nonzeros Variable types: 0 continuous, 2366 integer (2366 binary) Root relaxation: objective 0.000000e+00, 196 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 (347 simplex iterations) in 0.05 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 Thu Dec 13 19:44:28 2012 Optimize a model with 4577 rows, 1387 columns and 14443 nonzeros Presolve time: 0.01s Presolved: 4577 rows, 1387 columns, 14443 nonzeros Variable types: 0 continuous, 1387 integer (1387 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 (354 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:28 2012 Optimize a model with 2129 rows, 853 columns and 6565 nonzeros Presolve time: 0.01s Presolved: 2129 rows, 853 columns, 6565 nonzeros Variable types: 0 continuous, 853 integer (853 binary) Root relaxation: objective 0.000000e+00, 196 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 54 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1571 simplex iterations) in 0.06 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 Thu Dec 13 19:44:28 2012 Optimize a model with 905 rows, 586 columns and 2626 nonzeros Presolve removed 89 rows and 89 columns Presolve time: 0.00s Presolved: 816 rows, 497 columns, 2448 nonzeros Variable types: 0 continuous, 497 integer (497 binary) Root relaxation: objective 0.000000e+00, 93 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 89 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (377 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 Thu Dec 13 19:44:28 2012 Optimize a model with 1313 rows, 675 columns and 3939 nonzeros Presolve time: 0.00s Presolved: 1313 rows, 675 columns, 3939 nonzeros Variable types: 0 continuous, 675 integer (675 binary) Root relaxation: objective 0.000000e+00, 200 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 0 136 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2688 simplex iterations) in 0.16 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:28 2012 Optimize a model with 1721 rows, 764 columns and 5252 nonzeros Presolve time: 0.00s Presolved: 1721 rows, 764 columns, 5252 nonzeros Variable types: 0 continuous, 764 integer (764 binary) Root relaxation: objective 0.000000e+00, 199 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 0 178 - 0.00000 - - 0s 0 0 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 154 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 0.00000 0 205 - 0.00000 - - 0s 0 0 0.00000 0 161 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 0s 0 2 0.00000 0 206 - 0.00000 - - 1s Cutting planes: Clique: 4 Zero half: 17 Explored 101 nodes (21973 simplex iterations) in 1.54 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5