Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/package.mo", uses=false) Using package Buildings with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica_StateGraph2 with version 2.0.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo) Running command: translateModel(Buildings.Fluid.Movers.Examples.PumpsSeries,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries") translateModel(Buildings.Fluid.Movers.Examples.PumpsSeries,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries") [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:257:38-257:110:writable] Warning: The file was not encoded in UTF-8: "

An important practical aspect of state machines is the abilit...". Defaulting to 7-bit ASCII with unknown characters replaced by '?'. To change encoding when loading a file: loadFile(encoding="ISO-XXXX-YY"). To change it in a package: add a file package.encoding at the top-level. Note: The Modelica Language Specification only allows files encoded in UTF-8. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:761:36-761:108:writable] Warning: The file was not encoded in UTF-8: "

The Modelica_StateGraph2 library is described in detail in (O...". Defaulting to 7-bit ASCII with unknown characters replaced by '?'. To change encoding when loading a file: loadFile(encoding="ISO-XXXX-YY"). To change it in a package: add a file package.encoding at the top-level. Note: The Modelica Language Specification only allows files encoded in UTF-8. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:1435:36-1435:108:writable] Warning: The file was not encoded in UTF-8: "

Main Authors:

SCode: time 0.1991/0.2011, allocations: 80.83 MB / 0.5899 GB, free: 7 MB / 446.1 MB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Examples.PumpsSeries): time 0.04817/0.2493, allocations: 49.98 MB / 0.6387 GB, free: 4.84 MB / 494.1 MB Notification: Performance of NFInst.instExpressions: time 0.02981/0.2792, allocations: 17.84 MB / 0.6561 GB, free: 2.961 MB / 0.4981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004688/0.2839, allocations: 63.56 kB / 0.6561 GB, free: 2.898 MB / 0.4981 GB Notification: Performance of NFTyping.typeComponents: time 0.00574/0.2898, allocations: 0.9953 MB / 0.6571 GB, free: 1.898 MB / 0.4981 GB Notification: Performance of NFTyping.typeBindings: time 0.009065/0.2989, allocations: 2.069 MB / 0.6591 GB, free: 15.82 MB / 0.5137 GB Notification: Performance of NFTyping.typeClassSections: time 0.009123/0.308, allocations: 3.35 MB / 0.6624 GB, free: 12.5 MB / 0.5137 GB Notification: Performance of NFFlatten.flatten: time 0.00763/0.3157, allocations: 4.878 MB / 0.6672 GB, free: 7.605 MB / 0.5137 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003532/0.3193, allocations: 1.595 MB / 0.6687 GB, free: 5.973 MB / 0.5137 GB Notification: Performance of NFEvalConstants.evaluate: time 0.006463/0.3258, allocations: 1.904 MB / 0.6706 GB, free: 4.066 MB / 0.5137 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003223/0.329, allocations: 1.552 MB / 0.6721 GB, free: 2.508 MB / 0.5137 GB Notification: Performance of NFPackage.collectConstants: time 0.001003/0.33, allocations: 215.9 kB / 0.6723 GB, free: 2.297 MB / 0.5137 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004027/0.3341, allocations: 1.517 MB / 0.6738 GB, free: 0.7773 MB / 0.5137 GB Notification: Performance of NFScalarize.scalarize: time 0.001151/0.3352, allocations: 0.6037 MB / 0.6744 GB, free: 176 kB / 0.5137 GB Notification: Performance of NFVerifyModel.verify: time 0.002295/0.3376, allocations: 1.092 MB / 0.6755 GB, free: 15.07 MB / 0.5294 GB Notification: Performance of NFConvertDAE.convert: time 0.005453/0.343, allocations: 3.607 MB / 0.679 GB, free: 11.46 MB / 0.5294 GB Notification: Performance of FrontEnd - DAE generated: time 5.23e-06/0.343, allocations: 0 / 0.679 GB, free: 11.46 MB / 0.5294 GB Notification: Performance of FrontEnd: time 1.483e-06/0.3431, allocations: 0 / 0.679 GB, free: 11.46 MB / 0.5294 GB Notification: Performance of Transformations before backend: time 5.251e-05/0.3431, allocations: 0 / 0.679 GB, free: 11.46 MB / 0.5294 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 265 * Number of variables: 265 Notification: Performance of Generate backend data structure: time 0.005087/0.3482, allocations: 2.59 MB / 0.6815 GB, free: 8.793 MB / 0.5294 GB Notification: Performance of prepare preOptimizeDAE: time 4.966e-05/0.3483, allocations: 8.031 kB / 0.6815 GB, free: 8.785 MB / 0.5294 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003286/0.3516, allocations: 0.5682 MB / 0.6821 GB, free: 8.215 MB / 0.5294 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004244/0.3558, allocations: 1.897 MB / 0.6839 GB, free: 6.266 MB / 0.5294 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.22e-05/0.3559, allocations: 82.09 kB / 0.684 GB, free: 6.184 MB / 0.5294 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002816/0.3562, allocations: 116 kB / 0.6841 GB, free: 6.07 MB / 0.5294 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002611/0.3589, allocations: 1.418 MB / 0.6855 GB, free: 4.539 MB / 0.5294 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.581e-05/0.3589, allocations: 4 kB / 0.6855 GB, free: 4.535 MB / 0.5294 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001146/0.359, allocations: 48 kB / 0.6855 GB, free: 4.488 MB / 0.5294 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.365e-05/0.3591, allocations: 24 kB / 0.6856 GB, free: 4.465 MB / 0.5294 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002254/0.3613, allocations: 1.038 MB / 0.6866 GB, free: 3.422 MB / 0.5294 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 0.3895/0.7508, allocations: 6.582 MB / 0.693 GB, free: 94.15 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002422/0.7532, allocations: 0.8461 MB / 0.6938 GB, free: 94.04 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007306/0.754, allocations: 348.1 kB / 0.6942 GB, free: 94.03 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003135/0.7571, allocations: 1.816 MB / 0.6959 GB, free: 93.18 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.891e-05/0.7572, allocations: 42.17 kB / 0.696 GB, free: 93.14 MB / 0.5294 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.000691/0.7579, allocations: 104.1 kB / 0.6961 GB, free: 93.14 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=52): time 2.905e-06/0.7579, allocations: 0 / 0.6961 GB, free: 93.14 MB / 0.5294 GB Notification: Performance of matching and sorting (n=52): time 0.003505/0.7614, allocations: 1.251 MB / 0.6973 GB, free: 93 MB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 8.044e-05/0.7615, allocations: 268.1 kB / 0.6976 GB, free: 92.69 MB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002259/0.7638, allocations: 1.584 MB / 0.6991 GB, free: 92.53 MB / 0.5294 GB Notification: Performance of collectPreVariables (initialization): time 0.0001074/0.7639, allocations: 41.09 kB / 0.6991 GB, free: 92.5 MB / 0.5294 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006628/0.7646, allocations: 0.8419 MB / 0.7 GB, free: 92.29 MB / 0.5294 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001712/0.7647, allocations: 183.5 kB / 0.7001 GB, free: 92.18 MB / 0.5294 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004364/0.7652, allocations: 257.6 kB / 0.7004 GB, free: 92.16 MB / 0.5294 GB Notification: Performance of setup shared object (initialization): time 0.0001057/0.7653, allocations: 346.1 kB / 0.7007 GB, free: 91.85 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001143/0.7665, allocations: 0.6055 MB / 0.7013 GB, free: 91.84 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001388/0.7679, allocations: 0.9026 MB / 0.7022 GB, free: 91.49 MB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002434/0.7703, allocations: 1.429 MB / 0.7036 GB, free: 91.04 MB / 0.5294 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.115e-06/0.7703, allocations: 2.625 kB / 0.7036 GB, free: 91.04 MB / 0.5294 GB Notification: Performance of matching and sorting (n=131) (initialization): time 0.003594/0.7739, allocations: 1.91 MB / 0.7055 GB, free: 90.32 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001095/0.774, allocations: 105.8 kB / 0.7056 GB, free: 90.25 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.466e-05/0.7741, allocations: 11.64 kB / 0.7056 GB, free: 90.25 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004698/0.7746, allocations: 184.6 kB / 0.7057 GB, free: 90.2 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008807/0.7754, allocations: 204.6 kB / 0.7059 GB, free: 90.19 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0009304/0.7764, allocations: 0.7254 MB / 0.7066 GB, free: 89.6 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001595/0.778, allocations: 95.89 kB / 0.7067 GB, free: 89.58 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000171/0.7782, allocations: 85.72 kB / 0.7068 GB, free: 89.57 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001796/0.78, allocations: 0.8664 MB / 0.7077 GB, free: 89.18 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001314/0.7813, allocations: 0.8297 MB / 0.7085 GB, free: 88.64 MB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002219/0.7835, allocations: 1.272 MB / 0.7097 GB, free: 87.92 MB / 0.5294 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 7.965e-06/0.7836, allocations: 1.969 kB / 0.7097 GB, free: 87.92 MB / 0.5294 GB Notification: Performance of matching and sorting (n=131) (initialization_lambda0): time 0.004184/0.7878, allocations: 1.782 MB / 0.7115 GB, free: 87.24 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001023/0.7879, allocations: 109.5 kB / 0.7116 GB, free: 87.16 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.15e-05/0.7879, allocations: 12.73 kB / 0.7116 GB, free: 87.16 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001088/0.789, allocations: 268 kB / 0.7118 GB, free: 87.11 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008516/0.7899, allocations: 190.1 kB / 0.712 GB, free: 87.09 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01243/0.8023, allocations: 5.381 MB / 0.7173 GB, free: 83.86 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001598/0.804, allocations: 87.95 kB / 0.7173 GB, free: 83.84 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002217/0.8042, allocations: 78.62 kB / 0.7174 GB, free: 83.83 MB / 0.5294 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 33 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (94): * Single equations (assignments): 87 * Array equations: 2 * Algorithm blocks: 2 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(2,4)} Notification: Performance of prepare postOptimizeDAE: time 0.0004416/0.8046, allocations: 247.4 kB / 0.7177 GB, free: 83.6 MB / 0.5294 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002954/0.805, allocations: 169.3 kB / 0.7178 GB, free: 83.51 MB / 0.5294 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002987/0.8079, allocations: 1.185 MB / 0.719 GB, free: 83.08 MB / 0.5294 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.076e-05/0.808, allocations: 3.938 kB / 0.719 GB, free: 83.08 MB / 0.5294 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.561e-06/0.808, allocations: 7.375 kB / 0.719 GB, free: 83.08 MB / 0.5294 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.876e-06/0.808, allocations: 6.078 kB / 0.719 GB, free: 83.08 MB / 0.5294 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002107/0.8101, allocations: 1.148 MB / 0.7201 GB, free: 82.35 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.093e-06/0.8101, allocations: 0 / 0.7201 GB, free: 82.35 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006853/0.8108, allocations: 115.6 kB / 0.7202 GB, free: 82.32 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004705/0.8113, allocations: 134.9 kB / 0.7204 GB, free: 82.27 MB / 0.5294 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.183e-05/0.8114, allocations: 27.97 kB / 0.7204 GB, free: 82.25 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0004507/0.8118, allocations: 0.6617 MB / 0.721 GB, free: 81.65 MB / 0.5294 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.503e-06/0.8118, allocations: 0 / 0.721 GB, free: 81.65 MB / 0.5294 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003152/0.815, allocations: 1.544 MB / 0.7225 GB, free: 80.79 MB / 0.5294 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006195/0.8156, allocations: 309.8 kB / 0.7228 GB, free: 80.53 MB / 0.5294 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001888/0.8158, allocations: 22.84 kB / 0.7229 GB, free: 80.51 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007784/0.8166, allocations: 75.33 kB / 0.7229 GB, free: 80.47 MB / 0.5294 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.902e-05/0.8167, allocations: 36.92 kB / 0.723 GB, free: 80.46 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.601e-05/0.8168, allocations: 27.75 kB / 0.723 GB, free: 80.45 MB / 0.5294 GB Notification: Performance of sorting global known variables: time 0.001318/0.8181, allocations: 1.068 MB / 0.724 GB, free: 79.84 MB / 0.5294 GB Notification: Performance of sort global known variables: time 1.4e-07/0.8181, allocations: 2.844 kB / 0.724 GB, free: 79.84 MB / 0.5294 GB Notification: Performance of remove unused functions: time 0.003109/0.8212, allocations: 0.9994 MB / 0.725 GB, free: 79.67 MB / 0.5294 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 4 (floMac1.filter.x[1],floMac1.filter.x[2],floMac2.filter.x[1],floMac2.filter.x[2]) * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (56): * Single equations (assignments): 52 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001655/0.8229, allocations: 0.5476 MB / 0.7255 GB, free: 79.44 MB / 0.5294 GB Notification: Performance of simCode: created initialization part: time 0.005467/0.8284, allocations: 3.495 MB / 0.729 GB, free: 77.27 MB / 0.5294 GB Notification: Performance of simCode: created event and clocks part: time 8.426e-06/0.8284, allocations: 7.75 kB / 0.729 GB, free: 77.27 MB / 0.5294 GB Notification: Performance of simCode: created simulation system equations: time 0.0009008/0.8293, allocations: 395.2 kB / 0.7293 GB, free: 77.09 MB / 0.5294 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003389/0.8327, allocations: 0.8254 MB / 0.7301 GB, free: 76.7 MB / 0.5294 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004552/0.8373, allocations: 3.433 MB / 0.7335 GB, free: 73.39 MB / 0.5294 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006306/0.8379, allocations: 1.372 MB / 0.7348 GB, free: 71.98 MB / 0.5294 GB Notification: Performance of simCode: alias equations: time 0.001652/0.8396, allocations: 386.3 kB / 0.7352 GB, free: 71.63 MB / 0.5294 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002944/0.8399, allocations: 131.4 kB / 0.7353 GB, free: 71.5 MB / 0.5294 GB Notification: Performance of SimCode: time 1.122e-06/0.8399, allocations: 4 kB / 0.7353 GB, free: 71.5 MB / 0.5294 GB Notification: Performance of Templates: time 0.05967/0.8996, allocations: 41.06 MB / 0.7754 GB, free: 30.87 MB / 0.5294 GB make -j1 -f Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries.makefile (rm -f Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe ; mkfifo Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe ; head -c 1048576 < Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe >> ../files/Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries.sim & ./Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_3.0.0_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe 2>&1)