
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:20:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3639.42.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo3639.42.lp
Reading time = 0.18 seconds
: 86300 rows, 2200 columns, 260615 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 86300 rows, 2200 columns and 260615 nonzeros
Model fingerprint: 0xa60d29d4
Variable types: 45 continuous, 2155 integer (2155 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective 2.0000000
Presolve removed 20301 rows and 27 columns
Presolve time: 0.92s
Presolved: 65999 rows, 2173 columns, 200136 nonzeros
Variable types: 0 continuous, 2173 integer (2128 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2173 rows, 68172 columns, 202309 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18531    4.8962034e+01   0.000000e+00   5.188086e+04      5s
   37091    4.8949275e+01   0.000000e+00   1.293838e+02     10s
   40812    4.9000000e+01   0.000000e+00   0.000000e+00     11s
   40812    4.9000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.900000e+01, 40812 iterations, 10.20 seconds (5.79 work units)
Total elapsed time = 21.82s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   49.00000    0  533   12.00000   49.00000   308%     -   23s
     0     0   49.00000    0  743   12.00000   49.00000   308%     -   37s
     0     0   49.00000    0  730   12.00000   49.00000   308%     -   40s
     0     0          -    0        12.00000   49.00000   308%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 32
  Cover: 12
  Clique: 16
  MIR: 117
  StrongCG: 1
  Zero half: 21
  RLT: 45
  BQP: 3

Explored 1 nodes (60832 simplex iterations) in 50.09 seconds (30.78 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.900000000000e+01, gap 308.3333%

Wrote result file './lp_solutions/grafo3639.42.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:19:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3639.42.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo3639.42.lp
Reading time = 0.14 seconds
: 86300 rows, 2200 columns, 260615 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 86300 rows, 2200 columns and 260615 nonzeros
Model fingerprint: 0xa60d29d4
Variable types: 45 continuous, 2155 integer (2155 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective 2.0000000
Presolve removed 20301 rows and 27 columns
Presolve time: 0.58s
Presolved: 65999 rows, 2173 columns, 200136 nonzeros
Variable types: 0 continuous, 2173 integer (2128 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2173 rows, 68172 columns, 202309 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26531    4.8952931e+01   0.000000e+00   3.320615e+03      5s
   40812    4.9000000e+01   0.000000e+00   0.000000e+00      8s
   40812    4.9000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.900000e+01, 40812 iterations, 7.10 seconds (5.79 work units)
Total elapsed time = 15.92s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   49.00000    0  533   12.00000   49.00000   308%     -   17s
     0     0   49.00000    0  743   12.00000   49.00000   308%     -   27s
     0     0   49.00000    0  730   12.00000   49.00000   308%     -   28s
     0     0   49.00000    0  713   12.00000   49.00000   308%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 32
  Cover: 12
  Clique: 16
  MIR: 117
  StrongCG: 1
  Zero half: 21
  RLT: 45
  BQP: 3

Explored 1 nodes (75574 simplex iterations) in 50.06 seconds (46.27 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.900000000000e+01, gap 308.3333%

Wrote result file './lp_solutions/grafo3639.42.sol'

