
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:48:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3801.43.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/grafo3801.43.lp
Reading time = 0.18 seconds
: 95542 rows, 2254 columns, 288414 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 95542 rows, 2254 columns and 288414 nonzeros
Model fingerprint: 0xf619b755
Variable types: 44 continuous, 2210 integer (2210 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 33934 rows and 82 columns
Presolve time: 0.72s
Presolved: 61608 rows, 2172 columns, 186989 nonzeros
Variable types: 0 continuous, 2172 integer (2128 binary)
Root relaxation presolved: 2169 rows, 63777 columns, 189161 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22061    4.1985436e+01   0.000000e+00   6.951294e+03      5s
   38087    4.2000000e+01   0.000000e+00   0.000000e+00      9s
   38087    4.2000000e+01   0.000000e+00   0.000000e+00      9s
   38087    4.2000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.200000e+01, 38087 iterations, 8.01 seconds (5.10 work units)
Total elapsed time = 16.28s (DegenMoves)

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

     0     0   42.00000    0  275          -   42.00000      -     -   17s
H    0     0                       8.0000000   42.00000   425%     -   18s
     0     0   42.00000    0  661    8.00000   42.00000   425%     -   27s
H    0     0                      12.0000000   42.00000   250%     -   28s
     0     0   42.00000    0  660   12.00000   42.00000   250%     -   28s
     0     0   42.00000    0  517   12.00000   42.00000   250%     -   43s
H    0     0                      15.0000000   42.00000   180%     -   44s
     0     0   42.00000    0  518   15.00000   42.00000   180%     -   45s
     0     0          -    0        15.00000   42.00000   180%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 32
  Clique: 7
  MIR: 155
  StrongCG: 3
  GUB cover: 2
  Zero half: 59
  RLT: 55
  BQP: 5
  PSD: 2

Explored 1 nodes (65801 simplex iterations) in 50.13 seconds (32.16 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 15 12 8 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.200000000000e+01, gap 180.0000%

Wrote result file './lp_solutions/grafo3801.43.sol'

