Running command: translateModel(Buildings.Examples.Tutorial.Boiler.System4,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Examples.Tutorial.Boiler.System4")
Notification: Performance of loadModel(Buildings): time 3.711/3.711, allocations: 402 MB / 416.6 MB, free: 10.1 MB / 346.7 MB
Notification: Performance of FrontEnd - loaded program: time 2.992e-05/2.996e-05, allocations: 0 / 0.5009 GB, free: 8.242 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1957/0.1957, allocations: 92.69 MB / 0.5915 GB, free: 11.38 MB / 0.4948 GB
Notification: Performance of NFInst.instantiate(Buildings.Examples.Tutorial.Boiler.System4): time 1.888/2.083, allocations: 419.2 MB / 1.001 GB, free: 63.3 MB / 0.7448 GB
Notification: Performance of NFInst.instExpressions: time 0.1058/2.189, allocations: 54.17 MB / 1.054 GB, free: 37.54 MB / 0.7448 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.01566/2.205, allocations: 461.6 kB / 1.054 GB, free: 37.08 MB / 0.7448 GB
Notification: Performance of NFTyping.typeComponents: time 0.01823/2.223, allocations: 4.208 MB / 1.058 GB, free: 33.5 MB / 0.7448 GB
Notification: Performance of NFTyping.typeBindings: time 0.04613/2.269, allocations: 11.08 MB / 1.069 GB, free: 26.23 MB / 0.7448 GB
Notification: Performance of NFTyping.typeClassSections: time 0.03192/2.301, allocations: 7.576 MB / 1.077 GB, free: 19.33 MB / 0.7448 GB
Notification: Performance of NFFlatten.flatten: time 0.03436/2.336, allocations: 13.77 MB / 1.09 GB, free: 6.602 MB / 0.7448 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.01266/2.349, allocations: 5.964 MB / 1.096 GB, free: 0.5938 MB / 0.7448 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.02131/2.37, allocations: 6.695 MB / 1.102 GB, free: 9.879 MB / 0.7605 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.01418/2.384, allocations: 4.967 MB / 1.107 GB, free: 4.895 MB / 0.7605 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.02082/2.405, allocations: 3.936 MB / 1.111 GB, free: 0.9531 MB / 0.7605 GB
Notification: Performance of NFPackage.collectConstants: time 0.005222/2.41, allocations: 380 kB / 1.111 GB, free: 0.582 MB / 0.7605 GB
Notification: Performance of NFScalarize.scalarize: time 0.00563/2.416, allocations: 1.992 MB / 1.113 GB, free: 14.58 MB / 0.7761 GB
Notification: Performance of NFVerifyModel.verify: time 0.006588/2.423, allocations: 1.062 MB / 1.114 GB, free: 13.52 MB / 0.7761 GB
Notification: Performance of NFConvertDAE.convert: time 0.02836/2.451, allocations: 13.55 MB / 1.128 GB, free: 15.98 MB / 0.7917 GB
Notification: Performance of FrontEnd - DAE generated: time 4.418e-06/2.451, allocations: 0 / 1.128 GB, free: 15.98 MB / 0.7917 GB
Notification: Performance of FrontEnd: time 2.655e-06/2.451, allocations: 0 / 1.128 GB, free: 15.98 MB / 0.7917 GB
Notification: Performance of Transformations before backend: time 0.0006307/2.452, allocations: 0 / 1.128 GB, free: 15.98 MB / 0.7917 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 1659
 * Number of variables: 1659
Notification: Performance of Generate backend data structure: time 0.02577/2.477, allocations: 8.437 MB / 1.136 GB, free: 7.434 MB / 0.7917 GB
Notification: Performance of prepare preOptimizeDAE: time 5.745e-05/2.478, allocations: 8.031 kB / 1.136 GB, free: 7.426 MB / 0.7917 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01533/2.493, allocations: 1.887 MB / 1.138 GB, free: 5.523 MB / 0.7917 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.03138/2.524, allocations: 8.66 MB / 1.146 GB, free: 12.77 MB / 0.8073 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0007935/2.525, allocations: 0.5146 MB / 1.147 GB, free: 12.26 MB / 0.8073 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.00271/2.528, allocations: 0.7106 MB / 1.147 GB, free: 11.55 MB / 0.8073 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.03472/2.563, allocations: 8.645 MB / 1.156 GB, free: 2.492 MB / 0.8073 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0002589/2.563, allocations: 23.77 kB / 1.156 GB, free: 2.469 MB / 0.8073 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001432/2.564, allocations: 280 kB / 1.156 GB, free: 2.195 MB / 0.8073 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003599/2.565, allocations: 264.2 kB / 1.156 GB, free: 1.934 MB / 0.8073 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03054/2.595, allocations: 6.718 MB / 1.163 GB, free: 11.2 MB / 0.823 GB
Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts.
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.1228/2.718, allocations: 40.5 MB / 1.202 GB, free: 15.94 MB / 0.8698 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.02067/2.739, allocations: 4.552 MB / 1.207 GB, free: 11.42 MB / 0.8698 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.03646/2.775, allocations: 9.357 MB / 1.216 GB, free: 1.633 MB / 0.8698 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1/3.775, allocations: 3.062 MB / 1.219 GB, free: 357.3 MB / 0.8699 GB
Notification: Performance of preOpt simplifyInStream (simulation): time 0.007271/3.783, allocations: 408.7 kB / 1.219 GB, free: 357.3 MB / 0.8699 GB
Notification: Performance of pre-optimization done (n=392): time 5.9e-05/3.783, allocations: 0 / 1.219 GB, free: 357.3 MB / 0.8699 GB
Notification: Performance of matching and sorting (n=420): time 0.1192/3.902, allocations: 17.85 MB / 1.237 GB, free: 350.9 MB / 0.8699 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0002656/3.903, allocations: 0.7848 MB / 1.238 GB, free: 350 MB / 0.8699 GB
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Actuators/BaseClasses/ValveParameters.mo:29:3-35:74:writable] Warning: Parameter valBoi.res3.dpValve_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Interfaces/PartialTwoPortInterface.mo:8:3-10:52:writable] Warning: Parameter valBoi.res3.m_flow_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Actuators/BaseClasses/ValveParameters.mo:29:3-35:74:writable] Warning: Parameter valBoi.res1.dpValve_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Interfaces/PartialTwoPortInterface.mo:8:3-10:52:writable] Warning: Parameter valBoi.res1.m_flow_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Actuators/BaseClasses/ValveParameters.mo:29:3-35:74:writable] Warning: Parameter valRad.res3.dpValve_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Interfaces/PartialTwoPortInterface.mo:8:3-10:52:writable] Warning: Parameter valRad.res3.m_flow_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Actuators/BaseClasses/ValveParameters.mo:29:3-35:74:writable] Warning: Parameter valRad.res1.dpValve_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
[/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 5.0.1/Fluid/Interfaces/PartialTwoPortInterface.mo:8:3-10:52:writable] Warning: Parameter valRad.res1.m_flow_nominal has no value, and is fixed during initialization (fixed=true), using available start value (start=0.0) as default value.
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.02224/3.925, allocations: 6.687 MB / 1.244 GB, free: 347.7 MB / 0.8699 GB
Notification: Performance of collectPreVariables (initialization): time 0.001542/3.926, allocations: 132.3 kB / 1.244 GB, free: 347.6 MB / 0.8699 GB
Notification: Performance of collectInitialEqns (initialization): time 0.007154/3.934, allocations: 4.615 MB / 1.249 GB, free: 344.1 MB / 0.8699 GB
Notification: Performance of collectInitialBindings (initialization): time 0.003018/3.937, allocations: 1.475 MB / 1.25 GB, free: 342.9 MB / 0.8699 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.001076/3.938, allocations: 107.6 kB / 1.25 GB, free: 342.9 MB / 0.8699 GB
Notification: Performance of setup shared object (initialization): time 0.0005939/3.938, allocations: 0.5221 MB / 1.251 GB, free: 342.5 MB / 0.8699 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.01095/3.949, allocations: 2.463 MB / 1.253 GB, free: 341.6 MB / 0.8699 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.01258/3.962, allocations: 4.174 MB / 1.257 GB, free: 338.7 MB / 0.8699 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0123/3.974, allocations: 3.114 MB / 1.26 GB, free: 337.4 MB / 0.8699 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.278e-05/3.974, allocations: 15.62 kB / 1.26 GB, free: 337.4 MB / 0.8699 GB
Notification: Performance of matching and sorting (n=723) (initialization): time 0.05149/4.026, allocations: 9.34 MB / 1.269 GB, free: 334.2 MB / 0.8699 GB
Notification: Performance of prepare postOptimizeDAE: time 0.00403/4.03, allocations: 19.84 MB / 1.289 GB, free: 313.4 MB / 0.8699 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0002101/4.03, allocations: 46.77 kB / 1.289 GB, free: 313.4 MB / 0.8699 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0161/4.046, allocations: 1.879 MB / 1.291 GB, free: 313 MB / 0.8699 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01424/4.061, allocations: 1.537 MB / 1.292 GB, free: 312.9 MB / 0.8699 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02466/4.085, allocations: 19.51 MB / 1.311 GB, free: 295.2 MB / 0.8699 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01551/4.101, allocations: 0.8213 MB / 1.312 GB, free: 295.1 MB / 0.8699 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001665/4.103, allocations: 270.1 kB / 1.312 GB, free: 295 MB / 0.8699 GB
Notification: Performance of prepare postOptimizeDAE: time 1.426e-05/4.103, allocations: 4.531 kB / 1.312 GB, free: 295 MB / 0.8699 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.02918/4.132, allocations: 7.09 MB / 1.319 GB, free: 291.4 MB / 0.8699 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001655/4.132, allocations: 48.39 kB / 1.319 GB, free: 291.4 MB / 0.8699 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.01441/4.147, allocations: 1.631 MB / 1.321 GB, free: 290.6 MB / 0.8699 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01043/4.157, allocations: 1.274 MB / 1.322 GB, free: 290.3 MB / 0.8699 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02251/4.18, allocations: 22.01 MB / 1.344 GB, free: 267.1 MB / 0.8699 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01307/4.193, allocations: 0.7073 MB / 1.344 GB, free: 266.4 MB / 0.8699 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001434/4.194, allocations: 249.1 kB / 1.345 GB, free: 266.2 MB / 0.8699 GB
Warning: Assuming fixed start value for the following 7 variables:
         spl1.vol.dynBal.m:VARIABLE(min = max(0.0, 0.0) start = spl1.vol.V * spl1.vol.rho_start unit = "kg" fixed = true stateSelect=StateSelect.prefer protected = true )  "Mass of fluid" type: Real
         valRad.vol.dynBal.m:VARIABLE(min = max(0.0, 0.0) start = valRad.vol.V * valRad.vol.rho_start unit = "kg" fixed = true stateSelect=StateSelect.prefer protected = true )  "Mass of fluid" type: Real
         spl4.vol.dynBal.m:VARIABLE(min = max(0.0, 0.0) start = spl4.vol.V * spl4.vol.rho_start unit = "kg" fixed = true stateSelect=StateSelect.prefer protected = true )  "Mass of fluid" type: Real
         spl.vol.dynBal.m:VARIABLE(min = max(0.0, 0.0) start = spl.vol.V * spl.vol.rho_start unit = "kg" fixed = true stateSelect=StateSelect.prefer protected = true )  "Mass of fluid" type: Real
         pumRad.vol.dynBal.m:VARIABLE(min = max(0.0, 0.0) start = pumRad.vol.V * pumRad.vol.rho_start unit = "kg" fixed = true stateSelect=StateSelect.prefer protected = true )  "Mass of fluid" type: Real
         spl2.vol.dynBal.U:VARIABLE(start = spl2.vol.dynBal.fluidVolume * spl2.vol.dynBal.rho_start * Buildings.Examples.Tutorial.Boiler.System4.spl2.vol.dynBal.Medium.specificInternalEnergy(Buildings.Examples.Tutorial.Boiler.System4.spl2.vol.dynBal.Medium.setState_pTX(spl2.vol.dynBal.p_start, spl2.vol.dynBal.T_start, {})) + (spl2.vol.dynBal.T_start - 273.15) * 0.0 unit = "J" fixed = true nominal = 100000.0 protected = true )  "Internal energy of fluid" type: Real
         mix2.vol.dynBal.m:VARIABLE(min = max(0.0, 0.0) start = mix2.vol.V * mix2.vol.rho_start unit = "kg" fixed = true stateSelect=StateSelect.prefer protected = true )  "Mass of fluid" type: Real
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 161
 * Number of states: 0 ()
 * Number of discrete variables: 13 ($whenCondition1,$PRE.timTab.nextTimeEvent,timTab.nextTimeEvent,$PRE.timTab.nextTimeEventScaled,timTab.nextTimeEventScaled,$PRE.hysTOut.y,hysTOut.y,$PRE.hysTBoi.y,hysTBoi.y,and1.y,and2.y,$PRE.hysPum.y,hysPum.y)
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (665):
 * Single equations (assignments): 626
 * Array equations: 10
 * Algorithm blocks: 1
 * Record equations: 8
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 8
 * Torn equation systems: 12
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details:
 * Constant Jacobian: 0
 * Linear Jacobian (size,density): 0
 * Non-linear Jacobian: 8 {1,1,1,1,1,1,1,1}
 * Without analytic Jacobian: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 7 {(2,100.0%) 4,(1,100.0%) 4,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1}
 * Non-linear torn systems: 5 {4 7,1 3,1 3,1 3,1 3}
Notification: Performance of prepare postOptimizeDAE: time 0.008146/4.202, allocations: 2.211 MB / 1.347 GB, free: 264 MB / 0.8699 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.003297/4.206, allocations: 0.8526 MB / 1.348 GB, free: 263.1 MB / 0.8699 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.04483/4.251, allocations: 8.272 MB / 1.356 GB, free: 254.8 MB / 0.8699 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.03835/4.289, allocations: 6.722 MB / 1.362 GB, free: 247.9 MB / 0.8699 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.675e-05/4.289, allocations: 4 kB / 1.362 GB, free: 247.9 MB / 0.8699 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.00638/4.295, allocations: 1.648 MB / 1.364 GB, free: 246.3 MB / 0.8699 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.003221/4.299, allocations: 112 kB / 1.364 GB, free: 246.2 MB / 0.8699 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0127/4.311, allocations: 0.6743 MB / 1.365 GB, free: 245.5 MB / 0.8699 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001533/4.313, allocations: 331 kB / 1.365 GB, free: 245.2 MB / 0.8699 GB
Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singular and cannot be handled because the number of unassigned equations is larger than the number of states. Use -d=bltdump to get more information.
Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!
Notification: Performance of <failed> postOpt createDAEmodeBDAE (simulation): time 0.03268/4.346, allocations: 5.509 MB / 1.37 GB, free: 239.6 MB / 0.8699 GB
Error: post-optimization module createDAEmodeBDAE (simulation) failed.