Running command: translateModel(Buildings.Examples.Tutorial.Boiler.System2,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Examples.Tutorial.Boiler.System2")
Notification: Performance of loadModel(Buildings): time 3.723/3.723, allocations: 402 MB / 416.6 MB, free: 10.17 MB / 346.7 MB
Notification: Performance of FrontEnd - loaded program: time 2.991e-05/3.001e-05, allocations: 4 kB / 0.5009 GB, free: 8.227 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2094/0.2094, allocations: 92.68 MB / 0.5915 GB, free: 11.37 MB / 0.4948 GB
Notification: Performance of NFInst.instantiate(Buildings.Examples.Tutorial.Boiler.System2): time 0.7913/1.001, allocations: 169 MB / 0.7565 GB, free: 5.336 MB / 0.6198 GB
Notification: Performance of NFInst.instExpressions: time 0.0375/1.038, allocations: 16.2 MB / 0.7723 GB, free: 5.098 MB / 0.6355 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.003774/1.042, allocations: 95.5 kB / 0.7724 GB, free: 5.004 MB / 0.6355 GB
Notification: Performance of NFTyping.typeComponents: time 0.005453/1.048, allocations: 1.042 MB / 0.7734 GB, free: 3.957 MB / 0.6355 GB
Notification: Performance of NFTyping.typeBindings: time 0.01159/1.059, allocations: 2.714 MB / 0.7761 GB, free: 1.234 MB / 0.6355 GB
Notification: Performance of NFTyping.typeClassSections: time 0.01103/1.07, allocations: 2.552 MB / 0.7786 GB, free: 14.68 MB / 0.6511 GB
Notification: Performance of NFFlatten.flatten: time 0.01191/1.082, allocations: 4.468 MB / 0.7829 GB, free: 10.2 MB / 0.6511 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.004995/1.087, allocations: 2.172 MB / 0.7851 GB, free: 8.016 MB / 0.6511 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.006811/1.094, allocations: 2.193 MB / 0.7872 GB, free: 5.816 MB / 0.6511 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.004988/1.099, allocations: 1.771 MB / 0.7889 GB, free: 4.039 MB / 0.6511 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.006948/1.106, allocations: 1.471 MB / 0.7904 GB, free: 2.566 MB / 0.6511 GB
Notification: Performance of NFPackage.collectConstants: time 0.001792/1.108, allocations: 156 kB / 0.7905 GB, free: 2.414 MB / 0.6511 GB
Notification: Performance of NFScalarize.scalarize: time 0.002172/1.11, allocations: 0.7707 MB / 0.7913 GB, free: 1.641 MB / 0.6511 GB
Notification: Performance of NFVerifyModel.verify: time 0.002296/1.113, allocations: 368 kB / 0.7916 GB, free: 1.281 MB / 0.6511 GB
Notification: Performance of NFConvertDAE.convert: time 0.01121/1.124, allocations: 4.998 MB / 0.7965 GB, free: 12.27 MB / 0.6667 GB
Notification: Performance of FrontEnd - DAE generated: time 4.288e-06/1.124, allocations: 0 / 0.7965 GB, free: 12.27 MB / 0.6667 GB
Notification: Performance of FrontEnd: time 3.516e-06/1.124, allocations: 0 / 0.7965 GB, free: 12.27 MB / 0.6667 GB
Notification: Performance of Transformations before backend: time 0.0001917/1.124, allocations: 0 / 0.7965 GB, free: 12.27 MB / 0.6667 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 603
 * Number of variables: 603
Notification: Performance of Generate backend data structure: time 0.0104/1.135, allocations: 3.238 MB / 0.7997 GB, free: 8.961 MB / 0.6667 GB
Notification: Performance of prepare preOptimizeDAE: time 5.875e-05/1.135, allocations: 11.97 kB / 0.7997 GB, free: 8.949 MB / 0.6667 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01013/1.145, allocations: 0.971 MB / 0.8006 GB, free: 7.973 MB / 0.6667 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.01289/1.158, allocations: 3.286 MB / 0.8038 GB, free: 4.617 MB / 0.6667 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002968/1.158, allocations: 193 kB / 0.804 GB, free: 4.426 MB / 0.6667 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0009122/1.159, allocations: 252 kB / 0.8043 GB, free: 4.18 MB / 0.6667 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.009796/1.169, allocations: 3.241 MB / 0.8074 GB, free: 0.7422 MB / 0.6667 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001411/1.169, allocations: 11.84 kB / 0.8074 GB, free: 0.7305 MB / 0.6667 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000522/1.17, allocations: 104 kB / 0.8075 GB, free: 0.6289 MB / 0.6667 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001856/1.17, allocations: 108.3 kB / 0.8076 GB, free: 0.5195 MB / 0.6667 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.009448/1.179, allocations: 2.628 MB / 0.8102 GB, free: 13.88 MB / 0.6823 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 0.03863/1.218, allocations: 14.44 MB / 0.8243 GB, free: 14.73 MB / 0.698 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.005159/1.223, allocations: 1.994 MB / 0.8263 GB, free: 12.64 MB / 0.698 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.01875/1.242, allocations: 4.103 MB / 0.8303 GB, free: 8.383 MB / 0.698 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002937/1.245, allocations: 1.009 MB / 0.8312 GB, free: 7.355 MB / 0.698 GB
Notification: Performance of preOpt simplifyInStream (simulation): time 0.001795/1.247, allocations: 174 kB / 0.8314 GB, free: 7.184 MB / 0.698 GB
Notification: Performance of pre-optimization done (n=142): time 7.915e-06/1.247, allocations: 3.938 kB / 0.8314 GB, free: 7.18 MB / 0.698 GB
Notification: Performance of matching and sorting (n=163): time 0.02736/1.274, allocations: 6.972 MB / 0.8382 GB, free: 68 kB / 0.698 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001325/1.274, allocations: 171.6 kB / 0.8384 GB, free: 15.86 MB / 0.7136 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00635/1.281, allocations: 2.562 MB / 0.8409 GB, free: 13.3 MB / 0.7136 GB
Notification: Performance of collectPreVariables (initialization): time 0.0006501/1.281, allocations: 69.69 kB / 0.841 GB, free: 13.22 MB / 0.7136 GB
Notification: Performance of collectInitialEqns (initialization): time 0.002266/1.284, allocations: 1.525 MB / 0.8424 GB, free: 11.68 MB / 0.7136 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001068/1.285, allocations: 0.5661 MB / 0.843 GB, free: 11.11 MB / 0.7136 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.000281/1.285, allocations: 48 kB / 0.843 GB, free: 11.06 MB / 0.7136 GB
Notification: Performance of setup shared object (initialization): time 0.000248/1.285, allocations: 394.5 kB / 0.8434 GB, free: 10.67 MB / 0.7136 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.004162/1.29, allocations: 1.082 MB / 0.8445 GB, free: 9.586 MB / 0.7136 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.005022/1.295, allocations: 1.701 MB / 0.8461 GB, free: 7.617 MB / 0.7136 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.004973/1.3, allocations: 1.374 MB / 0.8475 GB, free: 6.234 MB / 0.7136 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.893e-05/1.3, allocations: 4 kB / 0.8475 GB, free: 6.23 MB / 0.7136 GB
Notification: Performance of matching and sorting (n=288) (initialization): time 0.02269/1.322, allocations: 4.214 MB / 0.8516 GB, free: 1.977 MB / 0.7136 GB
Notification: Performance of prepare postOptimizeDAE: time 0.003133/1.326, allocations: 7.274 MB / 0.8587 GB, free: 10.21 MB / 0.7292 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.955e-05/1.326, allocations: 16 kB / 0.8587 GB, free: 10.19 MB / 0.7292 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.01398/1.34, allocations: 1.383 MB / 0.8601 GB, free: 8.785 MB / 0.7292 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004251/1.344, allocations: 499.3 kB / 0.8605 GB, free: 8.297 MB / 0.7292 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01979/1.364, allocations: 10.6 MB / 0.8709 GB, free: 12.86 MB / 0.7448 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00533/1.369, allocations: 235.6 kB / 0.8711 GB, free: 12.63 MB / 0.7448 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006419/1.37, allocations: 108 kB / 0.8712 GB, free: 12.53 MB / 0.7448 GB
Notification: Performance of prepare postOptimizeDAE: time 1.533e-05/1.37, allocations: 4 kB / 0.8712 GB, free: 12.52 MB / 0.7448 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01559/1.386, allocations: 3.544 MB / 0.8747 GB, free: 8.949 MB / 0.7448 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.804e-05/1.386, allocations: 20 kB / 0.8747 GB, free: 8.93 MB / 0.7448 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.01374/1.4, allocations: 1.411 MB / 0.8761 GB, free: 7.496 MB / 0.7448 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003965/1.404, allocations: 491.2 kB / 0.8766 GB, free: 7.016 MB / 0.7448 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.5197/1.923, allocations: 10.36 MB / 0.8867 GB, free: 244.7 MB / 0.7448 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004905/1.928, allocations: 234.6 kB / 0.8869 GB, free: 244.7 MB / 0.7448 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0005124/1.929, allocations: 108 kB / 0.887 GB, free: 244.7 MB / 0.7448 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 76
 * Number of states: 0 ()
 * Number of discrete variables: 7 ($whenCondition1,$PRE.timTab.nextTimeEvent,timTab.nextTimeEvent,$PRE.timTab.nextTimeEventScaled,timTab.nextTimeEventScaled,$PRE.hysPum.y,hysPum.y)
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (261):
 * Single equations (assignments): 250
 * 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: 7
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 6 {(1,100.0%) 5,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1,(1,100.0%) 1}
 * Non-linear torn systems: 1 {5 6}
Notification: Performance of prepare postOptimizeDAE: time 0.002953/1.932, allocations: 1.022 MB / 0.888 GB, free: 244.5 MB / 0.7448 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001105/1.933, allocations: 306.6 kB / 0.8883 GB, free: 244.5 MB / 0.7448 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.009771/1.943, allocations: 3.024 MB / 0.8913 GB, free: 244 MB / 0.7448 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.007636/1.95, allocations: 2.624 MB / 0.8938 GB, free: 242.8 MB / 0.7448 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.875e-05/1.95, allocations: 0.9844 kB / 0.8938 GB, free: 242.8 MB / 0.7448 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.002405/1.953, allocations: 0.67 MB / 0.8945 GB, free: 242.5 MB / 0.7448 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001018/1.954, allocations: 44 kB / 0.8945 GB, free: 242.5 MB / 0.7448 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003676/1.958, allocations: 155.4 kB / 0.8947 GB, free: 242.5 MB / 0.7448 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0006133/1.958, allocations: 122.6 kB / 0.8948 GB, free: 242.4 MB / 0.7448 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 0.01058/1.969, allocations: 2.184 MB / 0.8969 GB, free: 241.7 MB / 0.7448 GB
Error: post-optimization module createDAEmodeBDAE (simulation) failed.