
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:06:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3476.42.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/grafo3476.42.lp
Reading time = 0.30 seconds
: 142945 rows, 2765 columns, 431436 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 142945 rows, 2765 columns and 431436 nonzeros
Model fingerprint: 0xa09ca9d2
Variable types: 55 continuous, 2710 integer (2710 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, 6e+01]
Found heuristic solution: objective 1.0000000
Presolve removed 38983 rows and 39 columns
Presolve time: 1.49s
Presolved: 103962 rows, 2726 columns, 314986 nonzeros
Variable types: 0 continuous, 2726 integer (2671 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2726 rows, 106688 columns, 317712 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11966    7.0907790e+01   0.000000e+00   1.714349e+05      5s
   26595    6.0754200e+01   0.000000e+00   4.261384e+04     10s
   41103    6.0711074e+01   0.000000e+00   4.061216e+03     15s
   54675    6.0700628e+01   0.000000e+00   2.668602e+04     20s
   62453    6.1000000e+01   0.000000e+00   0.000000e+00     23s
   62453    6.1000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 6.100000e+01, 62453 iterations, 21.47 seconds (11.92 work units)
Total elapsed time = 45.52s (DegenMoves)

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

     0     0   61.00000    0  859    7.00000   61.00000   771%     -   50s

Explored 1 nodes (77483 simplex iterations) in 50.07 seconds (37.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 1 

Time limit reached
Best objective 7.000000000000e+00, best bound 6.100000000000e+01, gap 771.4286%

Wrote result file './lp_solutions/grafo3476.42.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:18:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3476.42.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/grafo3476.42.lp
Reading time = 0.22 seconds
: 142945 rows, 2765 columns, 431436 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 142945 rows, 2765 columns and 431436 nonzeros
Model fingerprint: 0xa09ca9d2
Variable types: 55 continuous, 2710 integer (2710 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, 6e+01]
Found heuristic solution: objective 1.0000000
Presolve removed 38983 rows and 39 columns
Presolve time: 1.02s
Presolved: 103962 rows, 2726 columns, 314986 nonzeros
Variable types: 0 continuous, 2726 integer (2671 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2726 rows, 106688 columns, 317712 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18152    6.0840588e+01   0.000000e+00   3.527702e+05      5s
   38763    6.0714271e+01   0.000000e+00   2.356633e+04     10s
   57951    6.0699788e+01   0.000000e+00   6.466060e+02     15s
   62453    6.1000000e+01   0.000000e+00   0.000000e+00     16s
   62453    6.1000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 6.100000e+01, 62453 iterations, 15.10 seconds (11.92 work units)
Total elapsed time = 34.08s (DegenMoves)
Total elapsed time = 37.25s (DegenMoves)
Total elapsed time = 41.96s (DegenMoves)

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

     0     0   61.00000    0  820    7.00000   61.00000   771%     -   43s
H    0     0                       9.0000000   61.00000   578%     -   43s
     0     0          -    0         9.00000   61.00000   578%     -   50s

Cutting planes:
  Gomory: 26
  Cover: 30
  Clique: 42
  MIR: 234
  StrongCG: 1
  GUB cover: 5
  Zero half: 94
  RLT: 70
  BQP: 4

Explored 1 nodes (83472 simplex iterations) in 50.02 seconds (52.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.100000000000e+01, gap 577.7778%

Wrote result file './lp_solutions/grafo3476.42.sol'

