
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:46:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3669.43.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/grafo3669.43.lp
Reading time = 0.44 seconds
: 233787 rows, 2273 columns, 703111 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 233787 rows, 2273 columns and 703111 nonzeros
Model fingerprint: 0xde58ca2b
Variable types: 42 continuous, 2231 integer (2231 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]
Presolve removed 103128 rows and 53 columns
Presolve time: 2.16s
Presolved: 130659 rows, 2220 columns, 394155 nonzeros
Variable types: 0 continuous, 2220 integer (2178 binary)
Root relaxation presolved: 2214 rows, 132873 columns, 396375 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14391    6.5343888e+01   0.000000e+00   7.893320e+05      5s
   33861    3.9916817e+01   0.000000e+00   8.625037e+04     10s
   54482    3.9866966e+01   0.000000e+00   1.381526e+04     15s
   76277    3.9853809e+01   0.000000e+00   2.662109e+03     20s
   87534    4.0000000e+01   0.000000e+00   0.000000e+00     23s
   87534    4.0000000e+01   0.000000e+00   0.000000e+00     23s
   87534    4.0000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 4.000000e+01, 87534 iterations, 20.37 seconds (12.23 work units)
Total elapsed time = 38.29s (DegenMoves)
Total elapsed time = 41.48s (DegenMoves)

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

     0     0   40.00000    0  434          -   40.00000      -     -   44s
H    0     0                       7.0000000   40.00000   471%     -   44s
     0     0          -    0         7.00000   40.00000   471%     -   50s

Cutting planes:
  Gomory: 36
  Cover: 50
  Clique: 19
  MIR: 104
  StrongCG: 1
  GUB cover: 5
  Zero half: 90
  RLT: 45
  BQP: 5

Explored 1 nodes (100579 simplex iterations) in 50.05 seconds (37.30 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.000000000000e+01, gap 471.4286%

Wrote result file './lp_solutions/grafo3669.43.sol'

