python3 -m fmpy simulate  --output-file ScalableTestSuite_ScalableTestSuite.Mechanical.Strings.ScaledExperiments.StringModelica_N_64_res.csv --start-time 0 --stop-time 2 --timeout 300 --relative-tolerance 3e-08 --interface-type ModelExchange --solver CVode --output-interval 0.001 ScalableTestSuite_ScalableTestSuite_Mechanical_Strings_ScaledExperiments_StringModelica_N_64.fmu
LOG_STDOUT        | info    | Using sparse solver for linear system 0,
|                 | |       | because density of 0.002 remains under threshold of 0.200
|                 | |       | and size of 1898 exceeds threshold of 1000.
LOG_STDOUT        | info    | The simulation runtime does not have access to sparse solvers. Defaulting to a dense linear system solver instead.
LOG_STDOUT        | info    | Using sparse solver for linear system 1,
|                 | |       | because density of 0.002 remains under threshold of 0.200
|                 | |       | and size of 1895 exceeds threshold of 1000.
LOG_STDOUT        | info    | The simulation runtime does not have access to sparse solvers. Defaulting to a dense linear system solver instead.
LOG_STDOUT        | info    | The maximum density and the minimal system size for using sparse solvers can be
|                 | |       | specified using the runtime flags '<-lssMaxDensity=value>' and '<-lssMinSize=value>'.