Running command: translateModel(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u")
Notification: Performance of loadModel(Buildings): time 3.774/3.774, allocations: 402 MB / 416.6 MB, free: 10.19 MB / 346.7 MB
Notification: Performance of FrontEnd - loaded program: time 3.193e-05/3.197e-05, allocations: 8 kB / 0.501 GB, free: 8.234 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1964/0.1965, allocations: 92.68 MB / 0.5915 GB, free: 11.38 MB / 0.4948 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u): time 0.6596/0.8561, allocations: 53.87 MB / 0.6441 GB, free: 13.05 MB / 0.5261 GB
Notification: Performance of NFInst.instExpressions: time 0.03717/0.8934, allocations: 15.61 MB / 0.6593 GB, free: 2.285 MB / 0.5261 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.004024/0.8974, allocations: 114.8 kB / 0.6594 GB, free: 2.246 MB / 0.5261 GB
Notification: Performance of NFTyping.typeComponents: time 0.004684/0.9022, allocations: 0.9246 MB / 0.6603 GB, free: 1.41 MB / 0.5261 GB
Notification: Performance of NFTyping.typeBindings: time 0.01122/0.9134, allocations: 2.392 MB / 0.6627 GB, free: 15.24 MB / 0.5417 GB
Notification: Performance of NFTyping.typeClassSections: time 0.01153/0.925, allocations: 2.529 MB / 0.6651 GB, free: 13.4 MB / 0.5417 GB
Notification: Performance of NFFlatten.flatten: time 0.008018/0.933, allocations: 2.465 MB / 0.6675 GB, free: 11.62 MB / 0.5417 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.002652/0.9357, allocations: 1.097 MB / 0.6686 GB, free: 10.92 MB / 0.5417 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.004637/0.9404, allocations: 1.302 MB / 0.6699 GB, free: 10.14 MB / 0.5417 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002989/0.9435, allocations: 0.8988 MB / 0.6708 GB, free: 9.656 MB / 0.5417 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.005993/0.9495, allocations: 1.395 MB / 0.6721 GB, free: 8.988 MB / 0.5417 GB
Notification: Performance of NFPackage.collectConstants: time 0.001144/0.9507, allocations: 92.88 kB / 0.6722 GB, free: 8.988 MB / 0.5417 GB
Notification: Performance of NFScalarize.scalarize: time 0.0007826/0.9515, allocations: 378 kB / 0.6726 GB, free: 8.734 MB / 0.5417 GB
Notification: Performance of NFVerifyModel.verify: time 0.001283/0.9528, allocations: 203.3 kB / 0.6728 GB, free: 8.73 MB / 0.5417 GB
Notification: Performance of NFConvertDAE.convert: time 0.00664/0.9595, allocations: 2.622 MB / 0.6753 GB, free: 6.973 MB / 0.5417 GB
Notification: Performance of FrontEnd - DAE generated: time 4.449e-06/0.9595, allocations: 0 / 0.6753 GB, free: 6.973 MB / 0.5417 GB
Notification: Performance of FrontEnd: time 6.422e-06/0.9595, allocations: 1.438 kB / 0.6753 GB, free: 6.973 MB / 0.5417 GB
Notification: Performance of Transformations before backend: time 8.437e-05/0.9596, allocations: 3.938 kB / 0.6753 GB, free: 6.969 MB / 0.5417 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 319
 * Number of variables: 319
Notification: Performance of Generate backend data structure: time 0.004994/0.9646, allocations: 1.971 MB / 0.6773 GB, free: 5.484 MB / 0.5417 GB
Notification: Performance of prepare preOptimizeDAE: time 4.311e-05/0.9647, allocations: 9.469 kB / 0.6773 GB, free: 5.484 MB / 0.5417 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002423/0.9671, allocations: 401.5 kB / 0.6776 GB, free: 5.301 MB / 0.5417 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.004925/0.9721, allocations: 1.644 MB / 0.6792 GB, free: 4.055 MB / 0.5417 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0007254/0.9728, allocations: 165.6 kB / 0.6794 GB, free: 3.988 MB / 0.5417 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003419/0.9732, allocations: 146.4 kB / 0.6795 GB, free: 3.934 MB / 0.5417 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.005078/0.9783, allocations: 1.506 MB / 0.681 GB, free: 2.617 MB / 0.5417 GB
Notification: Performance of preOpt findStateOrder (simulation): time 4.978e-05/0.9784, allocations: 0 / 0.681 GB, free: 2.617 MB / 0.5417 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001978/0.9786, allocations: 56 kB / 0.6811 GB, free: 2.562 MB / 0.5417 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.83e-05/0.9787, allocations: 39.92 kB / 0.6811 GB, free: 2.523 MB / 0.5417 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004912/0.9836, allocations: 1.164 MB / 0.6822 GB, free: 1.352 MB / 0.5417 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 0.01521/0.9989, allocations: 7.878 MB / 0.6899 GB, free: 8.871 MB / 0.5573 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.004086/1.003, allocations: 0.9024 MB / 0.6908 GB, free: 7.965 MB / 0.5573 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.005123/1.008, allocations: 2.019 MB / 0.6928 GB, free: 5.77 MB / 0.5573 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002245/1.01, allocations: 0.5343 MB / 0.6933 GB, free: 5.219 MB / 0.5573 GB
Notification: Performance of preOpt simplifyInStream (simulation): time 0.0009678/1.011, allocations: 87.25 kB / 0.6934 GB, free: 5.133 MB / 0.5573 GB
Notification: Performance of pre-optimization done (n=72): time 4.058e-06/1.011, allocations: 0 / 0.6934 GB, free: 5.133 MB / 0.5573 GB
Notification: Performance of matching and sorting (n=78): time 0.01376/1.025, allocations: 3.042 MB / 0.6964 GB, free: 2.004 MB / 0.5573 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 8.79e-05/1.025, allocations: 141.1 kB / 0.6965 GB, free: 1.836 MB / 0.5573 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002846/1.028, allocations: 1.312 MB / 0.6978 GB, free: 0.5273 MB / 0.5573 GB
Notification: Performance of collectPreVariables (initialization): time 0.0002177/1.028, allocations: 49.7 kB / 0.6978 GB, free: 484 kB / 0.5573 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001163/1.03, allocations: 0.9115 MB / 0.6987 GB, free: 15.55 MB / 0.573 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0004343/1.03, allocations: 272 kB / 0.699 GB, free: 15.28 MB / 0.573 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 9.577e-05/1.03, allocations: 28 kB / 0.699 GB, free: 15.25 MB / 0.573 GB
Notification: Performance of setup shared object (initialization): time 0.0001781/1.03, allocations: 349.9 kB / 0.6993 GB, free: 14.91 MB / 0.573 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.001822/1.032, allocations: 434.4 kB / 0.6998 GB, free: 14.48 MB / 0.573 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.002142/1.034, allocations: 0.8126 MB / 0.7005 GB, free: 13.5 MB / 0.573 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.002009/1.036, allocations: 0.5472 MB / 0.7011 GB, free: 12.95 MB / 0.573 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.026e-05/1.036, allocations: 4 kB / 0.7011 GB, free: 12.95 MB / 0.573 GB
Notification: Performance of matching and sorting (n=142) (initialization): time 0.005323/1.042, allocations: 1.462 MB / 0.7025 GB, free: 11.46 MB / 0.573 GB
Notification: Performance of prepare postOptimizeDAE: time 0.001816/1.044, allocations: 4.098 MB / 0.7065 GB, free: 7.016 MB / 0.573 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.6e-05/1.044, allocations: 12 kB / 0.7065 GB, free: 7.004 MB / 0.573 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0003905/1.044, allocations: 52.83 kB / 0.7066 GB, free: 6.949 MB / 0.573 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0024/1.047, allocations: 295.5 kB / 0.7069 GB, free: 6.66 MB / 0.573 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001982/1.049, allocations: 1.433 MB / 0.7083 GB, free: 5.094 MB / 0.573 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00272/1.051, allocations: 159.6 kB / 0.7084 GB, free: 4.938 MB / 0.573 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002525/1.052, allocations: 55.98 kB / 0.7085 GB, free: 4.883 MB / 0.573 GB
Notification: Performance of prepare postOptimizeDAE: time 1.889e-05/1.052, allocations: 4 kB / 0.7085 GB, free: 4.879 MB / 0.573 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00451/1.056, allocations: 1.272 MB / 0.7097 GB, free: 3.602 MB / 0.573 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.299e-05/1.056, allocations: 15.98 kB / 0.7097 GB, free: 3.586 MB / 0.573 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0002581/1.057, allocations: 56.83 kB / 0.7098 GB, free: 3.527 MB / 0.573 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002124/1.059, allocations: 287.9 kB / 0.7101 GB, free: 3.246 MB / 0.573 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001654/1.06, allocations: 1.425 MB / 0.7114 GB, free: 1.684 MB / 0.573 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002497/1.063, allocations: 139.8 kB / 0.7116 GB, free: 1.547 MB / 0.573 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001985/1.063, allocations: 59.98 kB / 0.7116 GB, free: 1.488 MB / 0.573 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 45
 * Number of states: 0 ()
 * Number of discrete variables: 6 ($whenCondition1,$PRE.TSet.T_start,TSet.T_start,$PRE.TSet.count,TSet.count,conPI.I.trigger_internal)
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (136):
 * Single equations (assignments): 131
 * Array equations: 2
 * Algorithm blocks: 1
 * Record equations: 1
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 1
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 1 {(1,100.0%) 2}
 * Non-linear torn systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.001232/1.064, allocations: 434.7 kB / 0.7121 GB, free: 1.055 MB / 0.573 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004352/1.065, allocations: 169.8 kB / 0.7122 GB, free: 0.8867 MB / 0.573 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004986/1.07, allocations: 1.317 MB / 0.7135 GB, free: 15.55 MB / 0.5886 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00377/1.074, allocations: 0.9927 MB / 0.7145 GB, free: 14.54 MB / 0.5886 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.526e-06/1.074, allocations: 0 / 0.7145 GB, free: 14.54 MB / 0.5886 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.001251/1.075, allocations: 362.6 kB / 0.7148 GB, free: 14.16 MB / 0.5886 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003838/1.075, allocations: 23.95 kB / 0.7148 GB, free: 14.14 MB / 0.5886 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001959/1.077, allocations: 119.8 kB / 0.715 GB, free: 14.02 MB / 0.5886 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002164/1.078, allocations: 72.83 kB / 0.715 GB, free: 13.95 MB / 0.5886 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 0.003975/1.082, allocations: 0.7892 MB / 0.7158 GB, free: 13.16 MB / 0.5886 GB
Error: post-optimization module createDAEmodeBDAE (simulation) failed.