current bounds on the number of colors: 0 -- 94 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:36 2012 Optimize a model with 21902 rows, 4882 columns and 69842 nonzeros Presolve time: 0.12s Presolved: 21902 rows, 4882 columns, 69842 nonzeros Variable types: 0 continuous, 4882 integer (4882 binary) Root relaxation: objective 0.000000e+00, 258 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 (456 simplex iterations) in 0.16 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 -- 47 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:36 2012 Optimize a model with 10766 rows, 2626 columns and 34178 nonzeros Presolve time: 0.04s Presolved: 10766 rows, 2626 columns, 34178 nonzeros Variable types: 0 continuous, 2626 integer (2626 binary) Root relaxation: objective 0.000000e+00, 194 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 (403 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:36 2012 Optimize a model with 5198 rows, 1498 columns and 16346 nonzeros Presolve time: 0.02s Presolved: 5198 rows, 1498 columns, 16346 nonzeros Variable types: 0 continuous, 1498 integer (1498 binary) Root relaxation: objective 0.000000e+00, 193 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 (394 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:36 2012 Optimize a model with 2414 rows, 934 columns and 7430 nonzeros Presolve time: 0.01s Presolved: 2414 rows, 934 columns, 7430 nonzeros Variable types: 0 continuous, 934 integer (934 binary) Root relaxation: objective 0.000000e+00, 204 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 0 168 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (944 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:36 2012 Optimize a model with 1022 rows, 652 columns and 2972 nonzeros Presolve removed 94 rows and 94 columns Presolve time: 0.00s Presolved: 928 rows, 558 columns, 2784 nonzeros Variable types: 0 continuous, 558 integer (558 binary) Root relaxation: objective 0.000000e+00, 100 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 (417 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 19:47:36 2012 Optimize a model with 1486 rows, 746 columns and 4458 nonzeros Presolve time: 0.00s Presolved: 1486 rows, 746 columns, 4458 nonzeros Variable types: 0 continuous, 746 integer (746 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 0 184 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3110 simplex iterations) in 0.20 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 19:47:37 2012 Optimize a model with 1950 rows, 840 columns and 5944 nonzeros Presolve time: 0.00s Presolved: 1950 rows, 840 columns, 5944 nonzeros Variable types: 0 continuous, 840 integer (840 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 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 0.00000 0 266 - 0.00000 - - 0s 0 0 0.00000 0 255 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 1s 0 0 0.00000 0 228 - 0.00000 - - 1s 0 0 0.00000 0 223 - 0.00000 - - 1s 0 0 0.00000 0 230 - 0.00000 - - 1s 0 0 0.00000 0 234 - 0.00000 - - 1s 0 0 0.00000 0 234 - 0.00000 - - 1s 0 2 0.00000 0 234 - 0.00000 - - 2s Cutting planes: Clique: 7 Zero half: 18 Explored 101 nodes (28003 simplex iterations) in 2.56 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