current bounds on the number of colors: 0 -- 185 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:58:14 2012 Optimize a model with 78293 rows, 17869 columns and 251344 nonzeros Presolve time: 0.25s Presolved: 78293 rows, 17869 columns, 251344 nonzeros Variable types: 0 continuous, 17869 integer (17869 binary) Root relaxation: objective 0.000000e+00, 714 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 (1128 simplex iterations) in 0.42 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 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:58:15 2012 Optimize a model with 39239 rows, 9359 columns and 125672 nonzeros Presolve time: 0.16s Presolved: 39239 rows, 9359 columns, 125672 nonzeros Variable types: 0 continuous, 9359 integer (9359 binary) Root relaxation: objective 0.000000e+00, 630 iterations, 0.04 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 (1071 simplex iterations) in 0.25 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:58:16 2012 Optimize a model with 19712 rows, 5104 columns and 62836 nonzeros Presolve time: 0.08s Presolved: 19712 rows, 5104 columns, 62836 nonzeros Variable types: 0 continuous, 5104 integer (5104 binary) Root relaxation: objective 0.000000e+00, 437 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 (813 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:58:17 2012 Optimize a model with 9524 rows, 2884 columns and 30052 nonzeros Presolve time: 0.03s Presolved: 9524 rows, 2884 columns, 30052 nonzeros Variable types: 0 continuous, 2884 integer (2884 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 (706 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 Sat Dec 15 02:58:17 2012 Optimize a model with 4430 rows, 1774 columns and 13660 nonzeros Presolve time: 0.01s Presolved: 4430 rows, 1774 columns, 13660 nonzeros Variable types: 0 continuous, 1774 integer (1774 binary) Root relaxation: objective 0.000000e+00, 413 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 0 134 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3431 simplex iterations) in 0.21 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 Sat Dec 15 02:58:17 2012 Optimize a model with 1883 rows, 1219 columns and 5464 nonzeros Presolve removed 185 rows and 185 columns Presolve time: 0.00s Presolved: 1698 rows, 1034 columns, 5094 nonzeros Variable types: 0 continuous, 1034 integer (1034 binary) Root relaxation: objective 0.000000e+00, 190 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 0 185 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (798 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 Sat Dec 15 02:58:17 2012 Optimize a model with 2732 rows, 1404 columns and 8196 nonzeros Presolve time: 0.01s Presolved: 2732 rows, 1404 columns, 8196 nonzeros Variable types: 0 continuous, 1404 integer (1404 binary) Root relaxation: objective 0.000000e+00, 396 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 0 280 - 0.00000 - - 0s 0 0 0.00000 0 451 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (7004 simplex iterations) in 0.77 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 Sat Dec 15 02:58:18 2012 Optimize a model with 3581 rows, 1589 columns and 10928 nonzeros Presolve time: 0.01s Presolved: 3581 rows, 1589 columns, 10928 nonzeros Variable types: 0 continuous, 1589 integer (1589 binary) Root relaxation: objective 0.000000e+00, 406 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 0 358 - 0.00000 - - 0s 0 0 0.00000 0 350 - 0.00000 - - 0s 0 0 0.00000 0 340 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 0.00000 0 332 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 1s 0 0 0.00000 0 324 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 2s 0 0 0.00000 0 318 - 0.00000 - - 2s 0 0 0.00000 0 318 - 0.00000 - - 2s 0 0 0.00000 0 318 - 0.00000 - - 3s 0 2 0.00000 0 318 - 0.00000 - - 3s 184 28 0.00000 21 298 - 0.00000 - 119 5s 606 44 0.00000 14 332 - 0.00000 - 112 11s 609 46 0.00000 17 310 - 0.00000 - 111 15s 613 49 0.00000 18 433 - 0.00000 - 110 21s 723 36 infeasible 25 - 0.00000 - 190 25s 1005 19 infeasible 25 - 0.00000 - 208 30s 1266 24 0.00000 27 368 - 0.00000 - 218 35s 1594 50 infeasible 33 - 0.00000 - 218 40s 1916 52 infeasible 33 - 0.00000 - 220 45s 2201 31 infeasible 30 - 0.00000 - 224 50s 2482 42 0.00000 22 318 - 0.00000 - 227 55s 2775 31 infeasible 29 - 0.00000 - 228 60s 3093 33 0.00000 25 310 - 0.00000 - 228 65s 3374 16 infeasible 28 - 0.00000 - 230 70s 3677 13 infeasible 26 - 0.00000 - 231 75s 3957 3 infeasible 25 - 0.00000 - 232 80s Cutting planes: Gomory: 3 Clique: 1 Zero half: 3 Explored 3963 nodes (948636 simplex iterations) in 80.18 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