
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:32:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1776.44.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/grafo1776.44.lp
Reading time = 0.20 seconds
: 96466 rows, 2443 columns, 291438 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 96466 rows, 2443 columns and 291438 nonzeros
Model fingerprint: 0x20e8913e
Variable types: 48 continuous, 2395 integer (2395 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 19395 rows and 31 columns
Presolve time: 0.84s
Presolved: 77071 rows, 2412 columns, 233811 nonzeros
Variable types: 0 continuous, 2412 integer (2364 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2412 rows, 79483 columns, 236223 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19423    3.3927894e+01   0.000000e+00   1.324392e+04      5s
   37381    3.3918626e+01   0.000000e+00   2.665331e+02     10s
   40337    3.4000000e+01   0.000000e+00   0.000000e+00     11s
   40337    3.4000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 3.400000e+01, 40337 iterations, 9.90 seconds (6.53 work units)
Total elapsed time = 21.47s (DegenMoves)

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

     0     0   34.00000    0  275    7.00000   34.00000   386%     -   22s
H    0     0                      10.0000000   34.00000   240%     -   22s
     0     0   34.00000    0  645   10.00000   34.00000   240%     -   31s
     0     0   34.00000    0  630   10.00000   34.00000   240%     -   33s
     0     0   34.00000    0  668   10.00000   34.00000   240%     -   50s

Cutting planes:
  Gomory: 10
  Lift-and-project: 36
  Cover: 28
  Clique: 12
  MIR: 87
  GUB cover: 4
  Zero half: 42
  RLT: 43
  BQP: 3
  PSD: 2

Explored 1 nodes (67367 simplex iterations) in 50.05 seconds (38.92 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 7 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.400000000000e+01, gap 240.0000%

Wrote result file './lp_solutions/grafo1776.44.sol'

