
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:02:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1956.41.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/grafo1956.41.lp
Reading time = 0.32 seconds
: 160111 rows, 2743 columns, 482983 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 160111 rows, 2743 columns and 482983 nonzeros
Model fingerprint: 0x626459b6
Variable types: 53 continuous, 2690 integer (2690 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 52780 rows and 7 columns
Presolve time: 1.27s
Presolved: 107331 rows, 2736 columns, 325127 nonzeros
Variable types: 0 continuous, 2736 integer (2683 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2724 rows, 110055 columns, 327863 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14309    6.7928999e+01   0.000000e+00   4.362006e+05      5s
   30666    6.4768021e+01   0.000000e+00   5.556521e+04     10s
   46578    6.4730948e+01   0.000000e+00   3.638345e+04     15s
   62022    6.4722110e+01   0.000000e+00   8.974530e+02     20s
   70501    6.5000000e+01   0.000000e+00   0.000000e+00     23s
   70501    6.5000000e+01   0.000000e+00   0.000000e+00     23s
   70501    6.5000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 6.500000e+01, 70501 iterations, 21.21 seconds (13.17 work units)
Total elapsed time = 42.04s (DegenMoves)
Total elapsed time = 47.43s (DegenMoves)

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

     0     0   65.00000    0  633   10.00000   65.00000   550%     -   49s
H    0     0                      13.0000000   65.00000   400%     -   49s

Cutting planes:
  Cover: 60
  Clique: 35
  MIR: 100
  StrongCG: 1
  GUB cover: 2

Explored 1 nodes (87896 simplex iterations) in 50.07 seconds (41.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 10 

Time limit reached
Best objective 1.300000000000e+01, best bound 6.500000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo1956.41.sol'

