
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:43:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3295.43.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/grafo3295.43.lp
Reading time = 0.34 seconds
: 191971 rows, 2169 columns, 577522 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 191971 rows, 2169 columns and 577522 nonzeros
Model fingerprint: 0xd752d2d1
Variable types: 41 continuous, 2128 integer (2128 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 86447 rows and 46 columns
Presolve time: 1.53s
Presolved: 105524 rows, 2123 columns, 318391 nonzeros
Variable types: 0 continuous, 2123 integer (2082 binary)
Root relaxation presolved: 2120 rows, 107644 columns, 320514 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18586    5.2498477e+01   0.000000e+00   8.792426e+04      5s
   40734    4.4876829e+01   0.000000e+00   1.539299e+04     10s
   63582    4.4860183e+01   0.000000e+00   1.631097e+03     15s
   69852    4.5000000e+01   0.000000e+00   0.000000e+00     16s
   69852    4.5000000e+01   0.000000e+00   0.000000e+00     16s
   69852    4.5000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.500000e+01, 69852 iterations, 14.53 seconds (8.78 work units)
Total elapsed time = 26.22s (DegenMoves)

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

     0     0   45.00000    0  478          -   45.00000      -     -   28s
H    0     0                       7.0000000   45.00000   543%     -   31s
     0     0   45.00000    0  643    7.00000   45.00000   543%     -   42s
H    0     0                       9.0000000   45.00000   400%     -   44s
     0     0   45.00000    0  564    9.00000   45.00000   400%     -   44s
     0     0          -    0         9.00000   45.00000   400%     -   50s

Cutting planes:
  Gomory: 8
  Lift-and-project: 50
  Cover: 23
  Clique: 35
  MIR: 139
  StrongCG: 1
  GUB cover: 1
  Zero half: 38
  RLT: 76
  BQP: 5

Explored 1 nodes (84011 simplex iterations) in 50.04 seconds (39.96 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.500000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo3295.43.sol'

