current bounds on the number of colors: 0 -- 177 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:37:32 2012 Optimize a model with 70401 rows, 16374 columns and 226248 nonzeros Presolve time: 0.22s Presolved: 70401 rows, 16374 columns, 226248 nonzeros Variable types: 0 continuous, 16374 integer (16374 binary) Root relaxation: objective 0.000000e+00, 672 iterations, 0.07 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 (1218 simplex iterations) in 0.44 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 -- 88 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:37:33 2012 Optimize a model with 35289 rows, 8586 columns and 113124 nonzeros Presolve time: 0.15s Presolved: 35289 rows, 8586 columns, 113124 nonzeros Variable types: 0 continuous, 8586 integer (8586 binary) Root relaxation: objective 0.000000e+00, 585 iterations, 0.03 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 (986 simplex iterations) in 0.24 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 Fri Dec 14 23:37:34 2012 Optimize a model with 17733 rows, 4692 columns and 56562 nonzeros Presolve time: 0.07s Presolved: 17733 rows, 4692 columns, 56562 nonzeros Variable types: 0 continuous, 4692 integer (4692 binary) Root relaxation: objective 0.000000e+00, 386 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 (693 simplex iterations) in 0.10 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 Fri Dec 14 23:37:34 2012 Optimize a model with 8955 rows, 2745 columns and 28281 nonzeros Presolve time: 0.03s Presolved: 8955 rows, 2745 columns, 28281 nonzeros Variable types: 0 continuous, 2745 integer (2745 binary) Root relaxation: objective 0.000000e+00, 372 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 (696 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 -- 11 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:37:35 2012 Optimize a model with 4167 rows, 1683 columns and 12855 nonzeros Presolve time: 0.01s Presolved: 4167 rows, 1683 columns, 12855 nonzeros Variable types: 0 continuous, 1683 integer (1683 binary) Root relaxation: objective 0.000000e+00, 395 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 209 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4380 simplex iterations) in 0.32 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 Fri Dec 14 23:37:35 2012 Optimize a model with 1773 rows, 1152 columns and 5142 nonzeros Presolve removed 177 rows and 177 columns Presolve time: 0.00s Presolved: 1596 rows, 975 columns, 4788 nonzeros Variable types: 0 continuous, 975 integer (975 binary) Root relaxation: objective 0.000000e+00, 183 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 0 177 - 0.00000 - - 0s Explored 0 nodes (766 simplex iterations) in 0.02 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 Fri Dec 14 23:37:35 2012 Optimize a model with 2571 rows, 1329 columns and 7713 nonzeros Presolve time: 0.01s Presolved: 2571 rows, 1329 columns, 7713 nonzeros Variable types: 0 continuous, 1329 integer (1329 binary) Root relaxation: objective 0.000000e+00, 429 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 350 - 0.00000 - - 0s 0 0 0.00000 0 340 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4771 simplex iterations) in 0.47 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 Fri Dec 14 23:37:36 2012 Optimize a model with 3369 rows, 1506 columns and 10284 nonzeros Presolve time: 0.01s Presolved: 3369 rows, 1506 columns, 10284 nonzeros Variable types: 0 continuous, 1506 integer (1506 binary) Root relaxation: objective 0.000000e+00, 407 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 350 - 0.00000 - - 0s 0 0 0.00000 0 332 - 0.00000 - - 0s 0 0 0.00000 0 328 - 0.00000 - - 0s 0 0 0.00000 0 442 - 0.00000 - - 0s 0 0 0.00000 0 393 - 0.00000 - - 1s 0 0 0.00000 0 361 - 0.00000 - - 2s 0 0 0.00000 0 390 - 0.00000 - - 2s 0 0 0.00000 0 390 - 0.00000 - - 2s 0 2 0.00000 0 390 - 0.00000 - - 3s 199 50 0.00000 16 286 - 0.00000 - 137 5s 606 69 0.00000 7 308 - 0.00000 - 129 10s 610 72 0.00000 17 412 - 0.00000 - 128 15s 780 39 0.00000 17 342 - 0.00000 - 191 20s 1103 24 infeasible 21 - 0.00000 - 202 25s 1430 27 infeasible 21 - 0.00000 - 208 30s 1779 30 0.00000 21 334 - 0.00000 - 209 35s 2108 11 infeasible 19 - 0.00000 - 213 40s Cutting planes: Gomory: 1 Zero half: 10 Explored 2306 nodes (515499 simplex iterations) in 43.09 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