/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i


--------------------------------------------------------------------------------


This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 23:10:37,140 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-31 23:10:37,142 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 23:10:37,200 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 23:10:37,201 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 23:10:37,201 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 23:10:37,203 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 23:10:37,204 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 23:10:37,206 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 23:10:37,207 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 23:10:37,213 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 23:10:37,216 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 23:10:37,216 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 23:10:37,222 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 23:10:37,224 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 23:10:37,226 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 23:10:37,226 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 23:10:37,228 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 23:10:37,233 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 23:10:37,234 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 23:10:37,235 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 23:10:37,239 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 23:10:37,240 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 23:10:37,240 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 23:10:37,242 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 23:10:37,242 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 23:10:37,243 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 23:10:37,243 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-31 23:10:37,244 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-31 23:10:37,244 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-31 23:10:37,244 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-31 23:10:37,245 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 23:10:37,246 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-31 23:10:37,246 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-31 23:10:37,247 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-31 23:10:37,247 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-31 23:10:37,248 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-31 23:10:37,248 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-31 23:10:37,248 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-31 23:10:37,249 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-31 23:10:37,249 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 23:10:37,258 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf
[2022-01-31 23:10:37,265 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-31 23:10:37,265 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 23:10:37,266 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 23:10:37,266 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-31 23:10:37,267 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-31 23:10:37,267 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 23:10:37,267 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 23:10:37,267 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 23:10:37,267 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-31 23:10:37,267 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-01-31 23:10:37,267 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-31 23:10:37,268 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 23:10:37,268 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-31 23:10:37,268 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-01-31 23:10:37,268 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-31 23:10:37,268 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 23:10:37,268 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 23:10:37,269 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-01-31 23:10:37,269 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-31 23:10:37,269 INFO  L138        SettingsManager]:  * Loop acceleration method that is used by accelerated interpolation=QVASR
[2022-01-31 23:10:37,269 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 23:10:37,460 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 23:10:37,474 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 23:10:37,476 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 23:10:37,477 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-31 23:10:37,477 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-31 23:10:37,478 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i
[2022-01-31 23:10:37,529 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e884917cc/abb894d6dbb148c29883c2bd4569a445/FLAGc3af49e99
[2022-01-31 23:10:37,922 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-31 23:10:37,923 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i
[2022-01-31 23:10:37,935 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e884917cc/abb894d6dbb148c29883c2bd4569a445/FLAGc3af49e99
[2022-01-31 23:10:37,948 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e884917cc/abb894d6dbb148c29883c2bd4569a445
[2022-01-31 23:10:37,951 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 23:10:37,953 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2022-01-31 23:10:37,955 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 23:10:37,955 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 23:10:37,958 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 23:10:37,959 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:10:37" (1/1) ...
[2022-01-31 23:10:37,959 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327e31be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:37, skipping insertion in model container
[2022-01-31 23:10:37,960 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:10:37" (1/1) ...
[2022-01-31 23:10:37,965 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-31 23:10:37,977 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-31 23:10:38,116 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i[816,829]
[2022-01-31 23:10:38,127 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-31 23:10:38,131 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-31 23:10:38,165 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i[816,829]
[2022-01-31 23:10:38,176 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-31 23:10:38,186 INFO  L208         MainTranslator]: Completed translation
[2022-01-31 23:10:38,186 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38 WrapperNode
[2022-01-31 23:10:38,186 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 23:10:38,187 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 23:10:38,187 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 23:10:38,187 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 23:10:38,196 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (1/1) ...
[2022-01-31 23:10:38,196 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (1/1) ...
[2022-01-31 23:10:38,202 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (1/1) ...
[2022-01-31 23:10:38,203 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (1/1) ...
[2022-01-31 23:10:38,208 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (1/1) ...
[2022-01-31 23:10:38,212 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (1/1) ...
[2022-01-31 23:10:38,213 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (1/1) ...
[2022-01-31 23:10:38,214 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 23:10:38,215 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 23:10:38,215 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 23:10:38,215 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-31 23:10:38,216 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (1/1) ...
[2022-01-31 23:10:38,226 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 23:10:38,235 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 23:10:38,248 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-31 23:10:38,253 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-31 23:10:38,281 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 23:10:38,281 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 23:10:38,281 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 23:10:38,281 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-31 23:10:38,281 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 23:10:38,282 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 23:10:38,282 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 23:10:38,282 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-01-31 23:10:38,282 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2022-01-31 23:10:38,282 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 23:10:38,283 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 23:10:38,283 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-31 23:10:38,283 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-01-31 23:10:38,283 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2022-01-31 23:10:38,283 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-31 23:10:38,284 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 23:10:38,284 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 23:10:38,284 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 23:10:38,286 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 23:10:38,286 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 23:10:38,287 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 23:10:38,339 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-31 23:10:38,341 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 23:10:38,449 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-31 23:10:38,454 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 23:10:38,454 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-31 23:10:38,456 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:10:38 BoogieIcfgContainer
[2022-01-31 23:10:38,456 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 23:10:38,458 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 23:10:38,458 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 23:10:38,460 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-31 23:10:38,460 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:10:37" (1/3) ...
[2022-01-31 23:10:38,461 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cd0aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:10:38, skipping insertion in model container
[2022-01-31 23:10:38,461 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:10:38" (2/3) ...
[2022-01-31 23:10:38,461 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cd0aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:10:38, skipping insertion in model container
[2022-01-31 23:10:38,462 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:10:38" (3/3) ...
[2022-01-31 23:10:38,463 INFO  L111   eAbstractionObserver]: Analyzing ICFG standard_copy1_ground-2.i
[2022-01-31 23:10:38,467 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-01-31 23:10:38,467 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 23:10:38,505 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 23:10:38,527 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR
[2022-01-31 23:10:38,528 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 23:10:38,556 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 27 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-01-31 23:10:38,561 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-31 23:10:38,561 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-31 23:10:38,562 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 23:10:38,562 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 23:10:38,566 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 23:10:38,566 INFO  L85        PathProgramCache]: Analyzing trace with hash -1013160769, now seen corresponding path program 1 times
[2022-01-31 23:10:38,572 INFO  L121   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 23:10:38,572 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912434050]
[2022-01-31 23:10:38,573 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 23:10:38,584 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 23:10:38,621 INFO  L248   tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 23:10:38,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 23:10:38,717 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 23:10:38,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 23:10:38,727 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 23:10:38,728 INFO  L139   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 23:10:38,728 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912434050]
[2022-01-31 23:10:38,730 INFO  L160   FreeRefinementEngine]: IpTcStrategyModulePreferences [1912434050] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 23:10:38,730 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 23:10:38,730 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-31 23:10:38,731 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001739791]
[2022-01-31 23:10:38,732 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 23:10:38,735 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-31 23:10:38,735 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 23:10:38,757 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-31 23:10:38,758 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 23:10:38,760 INFO  L87              Difference]: Start difference. First operand  has 27 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 23:10:38,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 23:10:38,792 INFO  L93              Difference]: Finished difference Result 46 states and 57 transitions.
[2022-01-31 23:10:38,797 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-31 23:10:38,798 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2022-01-31 23:10:38,799 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 23:10:38,804 INFO  L225             Difference]: With dead ends: 46
[2022-01-31 23:10:38,805 INFO  L226             Difference]: Without dead ends: 22
[2022-01-31 23:10:38,808 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 23:10:38,815 INFO  L933         BasicCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 23:10:38,816 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 23:10:38,828 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-01-31 23:10:38,839 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-01-31 23:10:38,840 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 23:10:38,841 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2022-01-31 23:10:38,843 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15
[2022-01-31 23:10:38,843 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-31 23:10:38,843 INFO  L470      AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2022-01-31 23:10:38,843 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 23:10:38,843 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2022-01-31 23:10:38,844 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-31 23:10:38,844 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-31 23:10:38,844 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 23:10:38,845 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 23:10:38,845 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 23:10:38,846 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 23:10:38,846 INFO  L85        PathProgramCache]: Analyzing trace with hash 211576627, now seen corresponding path program 1 times
[2022-01-31 23:10:38,846 INFO  L121   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 23:10:38,846 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313885617]
[2022-01-31 23:10:38,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 23:10:38,847 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 23:10:38,855 INFO  L248   tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-01-31 23:10:38,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 23:10:38,924 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 23:10:38,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 23:10:38,939 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 23:10:38,940 INFO  L139   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-01-31 23:10:38,940 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313885617]
[2022-01-31 23:10:38,940 INFO  L160   FreeRefinementEngine]: IpTcStrategyModulePreferences [313885617] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 23:10:38,940 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 23:10:38,940 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 23:10:38,940 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891485029]
[2022-01-31 23:10:38,941 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 23:10:38,941 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 23:10:38,941 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-01-31 23:10:38,942 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 23:10:38,942 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 23:10:38,942 INFO  L87              Difference]: Start difference. First operand 22 states and 24 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 23:10:39,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 23:10:39,023 INFO  L93              Difference]: Finished difference Result 38 states and 42 transitions.
[2022-01-31 23:10:39,023 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-31 23:10:39,024 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2022-01-31 23:10:39,024 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 23:10:39,025 INFO  L225             Difference]: With dead ends: 38
[2022-01-31 23:10:39,025 INFO  L226             Difference]: Without dead ends: 24
[2022-01-31 23:10:39,025 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 23:10:39,026 INFO  L933         BasicCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 23:10:39,027 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 23:10:39,028 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-01-31 23:10:39,032 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23.
[2022-01-31 23:10:39,032 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 23:10:39,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions.
[2022-01-31 23:10:39,033 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15
[2022-01-31 23:10:39,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-31 23:10:39,034 INFO  L470      AbstractCegarLoop]: Abstraction has 23 states and 25 transitions.
[2022-01-31 23:10:39,034 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 23:10:39,034 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions.
[2022-01-31 23:10:39,034 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-31 23:10:39,035 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-31 23:10:39,035 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 23:10:39,039 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-31 23:10:39,039 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 23:10:39,040 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 23:10:39,040 INFO  L85        PathProgramCache]: Analyzing trace with hash 1551646545, now seen corresponding path program 1 times
[2022-01-31 23:10:39,040 INFO  L121   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-01-31 23:10:39,040 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108201915]
[2022-01-31 23:10:39,041 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 23:10:39,070 ERROR L252   FreeRefinementEngine]: Caught unknown exception: Undeclared function symbol (select Real Int)
[2022-01-31 23:10:39,070 WARN  L320   FreeRefinementEngine]: Global settings require throwing the following exception
[2022-01-31 23:10:39,071 FATAL L?                        ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (select Real Int)
	at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:505)
	at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:426)
	at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249)
	at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.select(SmtUtils.java:1520)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1465)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1374)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.convertApplicationTerm(SmtUtils.java:1363)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.convertApplicationTerm(Substitution.java:53)
	at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339)
	at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115)
	at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106)
	at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59)
	at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.getUpdates(QvasrAbstractor.java:1229)
	at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.computeAbstraction(QvasrAbstractor.java:106)
	at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:133)
	at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:79)
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:87)
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:210)
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.<init>(AcceleratedInterpolation.java:185)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:88)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:76)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:156)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2022-01-31 23:10:39,079 INFO  L158              Benchmark]: Toolchain (without parser) took 1123.87ms. Allocated memory was 174.1MB in the beginning and 225.4MB in the end (delta: 51.4MB). Free memory was 119.2MB in the beginning and 153.0MB in the end (delta: -33.8MB). Peak memory consumption was 17.5MB. Max. memory is 8.0GB.
[2022-01-31 23:10:39,083 INFO  L158              Benchmark]: CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-01-31 23:10:39,084 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 231.77ms. Allocated memory was 174.1MB in the beginning and 225.4MB in the end (delta: 51.4MB). Free memory was 119.0MB in the beginning and 199.1MB in the end (delta: -80.1MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB.
[2022-01-31 23:10:39,085 INFO  L158              Benchmark]: Boogie Preprocessor took 26.98ms. Allocated memory is still 225.4MB. Free memory was 199.1MB in the beginning and 197.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-01-31 23:10:39,085 INFO  L158              Benchmark]: RCFGBuilder took 241.18ms. Allocated memory is still 225.4MB. Free memory was 197.0MB in the beginning and 185.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-01-31 23:10:39,085 INFO  L158              Benchmark]: TraceAbstraction took 619.00ms. Allocated memory is still 225.4MB. Free memory was 184.9MB in the beginning and 153.0MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB.
[2022-01-31 23:10:39,091 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 231.77ms. Allocated memory was 174.1MB in the beginning and 225.4MB in the end (delta: 51.4MB). Free memory was 119.0MB in the beginning and 199.1MB in the end (delta: -80.1MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 26.98ms. Allocated memory is still 225.4MB. Free memory was 199.1MB in the beginning and 197.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 241.18ms. Allocated memory is still 225.4MB. Free memory was 197.0MB in the beginning and 185.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
 * TraceAbstraction took 619.00ms. Allocated memory is still 225.4MB. Free memory was 184.9MB in the beginning and 153.0MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (select Real Int)
    de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (select Real Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:505)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
[2022-01-31 23:10:39,126 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...