/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem05_label17.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-03-30 22:52:58,241 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2023-03-30 22:52:58,281 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-03-30 22:52:58,282 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2023-03-30 22:52:58,292 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-03-30 22:52:58,293 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-03-30 22:52:58,294 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-03-30 22:52:58,295 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-03-30 22:52:58,297 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-03-30 22:52:58,298 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-03-30 22:52:58,327 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-03-30 22:52:58,327 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-03-30 22:52:58,327 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-03-30 22:52:58,328 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-03-30 22:52:58,328 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-03-30 22:52:58,328 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-03-30 22:52:58,329 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-03-30 22:52:58,329 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-03-30 22:52:58,329 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-03-30 22:52:58,329 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-03-30 22:52:58,330 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-03-30 22:52:58,330 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-03-30 22:52:58,330 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-03-30 22:52:58,330 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-03-30 22:52:58,330 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-03-30 22:52:58,330 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-03-30 22:52:58,331 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-03-30 22:52:58,331 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-03-30 22:52:58,331 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-03-30 22:52:58,331 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-03-30 22:52:58,331 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-03-30 22:52:58,331 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-03-30 22:52:58,331 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-03-30 22:52:58,332 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-03-30 22:52:58,332 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-30 22:52:58,332 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-03-30 22:52:58,332 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-03-30 22:52:58,332 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-03-30 22:52:58,332 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-03-30 22:52:58,332 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-03-30 22:52:58,333 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-03-30 22:52:58,333 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-03-30 22:52:58,333 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-03-30 22:52:58,333 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-03-30 22:52:58,333 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-03-30 22:52:58,333 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-03-30 22:52:58,592 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-03-30 22:52:58,621 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-03-30 22:52:58,624 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-03-30 22:52:58,625 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-03-30 22:52:58,625 INFO  L275        PluginConnector]: CDTParser initialized
[2023-03-30 22:52:58,627 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label17.c
[2023-03-30 22:52:59,764 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-03-30 22:53:00,672 INFO  L351              CDTParser]: Found 1 translation units.
[2023-03-30 22:53:00,673 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label17.c
[2023-03-30 22:53:00,712 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8c813a0/8839950f2e2f409fa54799dfb533636c/FLAGdf7569d7f
[2023-03-30 22:53:00,726 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8c813a0/8839950f2e2f409fa54799dfb533636c
[2023-03-30 22:53:00,729 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-03-30 22:53:00,730 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-03-30 22:53:00,732 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-03-30 22:53:00,732 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-03-30 22:53:00,735 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-03-30 22:53:00,735 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:53:00" (1/1) ...
[2023-03-30 22:53:00,736 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78357fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:00, skipping insertion in model container
[2023-03-30 22:53:00,737 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:53:00" (1/1) ...
[2023-03-30 22:53:00,743 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-03-30 22:53:00,899 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-03-30 22:53:02,348 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label17.c[379438,379451]
[2023-03-30 22:53:02,366 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-30 22:53:02,375 INFO  L203         MainTranslator]: Completed pre-run
[2023-03-30 22:53:03,120 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label17.c[379438,379451]
[2023-03-30 22:53:03,124 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-30 22:53:03,167 INFO  L208         MainTranslator]: Completed translation
[2023-03-30 22:53:03,168 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03 WrapperNode
[2023-03-30 22:53:03,168 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-03-30 22:53:03,169 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-03-30 22:53:03,169 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-03-30 22:53:03,169 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-03-30 22:53:03,179 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,179 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,263 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,263 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,380 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,408 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,430 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,453 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,569 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-03-30 22:53:03,570 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-03-30 22:53:03,570 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-03-30 22:53:03,570 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-03-30 22:53:03,571 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (1/1) ...
[2023-03-30 22:53:03,577 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-30 22:53:03,586 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:53:03,602 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)
[2023-03-30 22:53:03,611 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
[2023-03-30 22:53:03,632 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-03-30 22:53:03,632 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-03-30 22:53:03,632 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-03-30 22:53:03,632 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-03-30 22:53:03,632 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-03-30 22:53:03,632 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-03-30 22:53:03,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-03-30 22:53:03,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2023-03-30 22:53:03,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2023-03-30 22:53:03,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2023-03-30 22:53:03,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2023-03-30 22:53:03,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-03-30 22:53:03,633 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-03-30 22:53:03,633 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-03-30 22:53:03,634 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-03-30 22:53:03,635 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-03-30 22:53:03,636 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-03-30 22:53:03,707 INFO  L236             CfgBuilder]: Building ICFG
[2023-03-30 22:53:03,709 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-03-30 22:53:09,798 INFO  L277             CfgBuilder]: Performing block encoding
[2023-03-30 22:53:09,825 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-03-30 22:53:09,825 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-03-30 22:53:09,831 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:53:09 BoogieIcfgContainer
[2023-03-30 22:53:09,832 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-03-30 22:53:09,835 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-03-30 22:53:09,835 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-03-30 22:53:09,838 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-03-30 22:53:09,838 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:53:00" (1/3) ...
[2023-03-30 22:53:09,839 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6566a3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:53:09, skipping insertion in model container
[2023-03-30 22:53:09,839 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:53:03" (2/3) ...
[2023-03-30 22:53:09,840 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6566a3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:53:09, skipping insertion in model container
[2023-03-30 22:53:09,840 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:53:09" (3/3) ...
[2023-03-30 22:53:09,843 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label17.c
[2023-03-30 22:53:09,861 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-03-30 22:53:09,861 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-03-30 22:53:09,952 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-03-30 22:53:09,957 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b34cb89, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-03-30 22:53:09,957 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-03-30 22:53:09,966 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-03-30 22:53:10,075 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1692
[2023-03-30 22:53:10,076 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:53:10,078 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:53:10,078 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:53:10,083 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:53:10,084 INFO  L85        PathProgramCache]: Analyzing trace with hash 961124610, now seen corresponding path program 1 times
[2023-03-30 22:53:10,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:53:10,092 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77390889]
[2023-03-30 22:53:10,092 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:53:10,093 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:53:10,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:53:19,185 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 22:53:19,193 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:53:19,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 22:53:19,223 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:53:19,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77390889]
[2023-03-30 22:53:19,223 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77390889] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 22:53:19,224 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 22:53:19,224 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-03-30 22:53:19,225 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659008555]
[2023-03-30 22:53:19,226 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 22:53:19,234 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-03-30 22:53:19,234 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:53:19,272 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-03-30 22:53:19,273 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-03-30 22:53:19,280 INFO  L87              Difference]: Start difference. First operand  has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand  has 5 states, 4 states have (on average 420.0) internal successors, (1680), 3 states have internal predecessors, (1680), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-30 22:53:34,383 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:53:34,384 INFO  L93              Difference]: Finished difference Result 8279 states and 15699 transitions.
[2023-03-30 22:53:34,386 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-03-30 22:53:34,388 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 420.0) internal successors, (1680), 3 states have internal predecessors, (1680), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1691
[2023-03-30 22:53:34,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:53:34,445 INFO  L225             Difference]: With dead ends: 8279
[2023-03-30 22:53:34,445 INFO  L226             Difference]: Without dead ends: 5989
[2023-03-30 22:53:34,504 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-03-30 22:53:34,510 INFO  L413           NwaCegarLoop]: 318 mSDtfsCounter, 8710 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 10511 mSolverCounterSat, 7255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8710 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 17766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7255 IncrementalHoareTripleChecker+Valid, 10511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time
[2023-03-30 22:53:34,511 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8710 Valid, 591 Invalid, 17766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7255 Valid, 10511 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time]
[2023-03-30 22:53:34,564 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5989 states.
[2023-03-30 22:53:34,896 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5833.
[2023-03-30 22:53:34,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5833 states, 5757 states have (on average 1.7403161368768456) internal successors, (10019), 5760 states have internal predecessors, (10019), 26 states have call successors, (26), 26 states have call predecessors, (26), 49 states have return successors, (104), 46 states have call predecessors, (104), 25 states have call successors, (104)
[2023-03-30 22:53:34,927 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 10149 transitions.
[2023-03-30 22:53:34,929 INFO  L78                 Accepts]: Start accepts. Automaton has 5833 states and 10149 transitions. Word has length 1691
[2023-03-30 22:53:34,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:53:34,933 INFO  L495      AbstractCegarLoop]: Abstraction has 5833 states and 10149 transitions.
[2023-03-30 22:53:34,933 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 420.0) internal successors, (1680), 3 states have internal predecessors, (1680), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-30 22:53:34,934 INFO  L276                IsEmpty]: Start isEmpty. Operand 5833 states and 10149 transitions.
[2023-03-30 22:53:35,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1725
[2023-03-30 22:53:35,033 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 22:53:35,034 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-30 22:53:35,034 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-03-30 22:53:35,034 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 22:53:35,035 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 22:53:35,035 INFO  L85        PathProgramCache]: Analyzing trace with hash 1336557094, now seen corresponding path program 1 times
[2023-03-30 22:53:35,035 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 22:53:35,036 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23021052]
[2023-03-30 22:53:35,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:53:35,036 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 22:53:35,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:53:37,862 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 22:53:37,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:53:37,892 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-03-30 22:53:37,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:53:37,918 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2023-03-30 22:53:37,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:53:37,941 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-03-30 22:53:37,941 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 22:53:37,942 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23021052]
[2023-03-30 22:53:37,942 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23021052] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-30 22:53:37,942 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660763872]
[2023-03-30 22:53:37,943 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 22:53:37,943 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 22:53:37,943 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 22:53:37,947 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-03-30 22:53:37,983 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-03-30 22:53:38,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 22:53:38,687 INFO  L262         TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-03-30 22:53:38,722 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-30 22:53:38,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2023-03-30 22:53:38,885 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-03-30 22:53:38,889 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [660763872] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 22:53:38,889 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-03-30 22:53:38,890 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11
[2023-03-30 22:53:38,891 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002157637]
[2023-03-30 22:53:38,892 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 22:53:38,895 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-03-30 22:53:38,895 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 22:53:38,897 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-03-30 22:53:38,897 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2023-03-30 22:53:38,898 INFO  L87              Difference]: Start difference. First operand 5833 states and 10149 transitions. Second operand  has 5 states, 5 states have (on average 338.4) internal successors, (1692), 4 states have internal predecessors, (1692), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2023-03-30 22:53:46,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 22:53:46,947 INFO  L93              Difference]: Finished difference Result 17234 states and 30487 transitions.
[2023-03-30 22:53:46,950 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-03-30 22:53:46,951 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 338.4) internal successors, (1692), 4 states have internal predecessors, (1692), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1724
[2023-03-30 22:53:46,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 22:53:47,005 INFO  L225             Difference]: With dead ends: 17234
[2023-03-30 22:53:47,006 INFO  L226             Difference]: Without dead ends: 11407
[2023-03-30 22:53:47,023 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1736 GetRequests, 1724 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182
[2023-03-30 22:53:47,024 INFO  L413           NwaCegarLoop]: 701 mSDtfsCounter, 6931 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 10695 mSolverCounterSat, 2874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6931 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 13569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2874 IncrementalHoareTripleChecker+Valid, 10695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time
[2023-03-30 22:53:47,024 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6931 Valid, 1452 Invalid, 13569 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2874 Valid, 10695 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time]
[2023-03-30 22:53:47,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11407 states.
[2023-03-30 22:53:47,287 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11407 to 11267.
[2023-03-30 22:53:47,318 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11267 states, 11064 states have (on average 1.518890093998554) internal successors, (16805), 11077 states have internal predecessors, (16805), 50 states have call successors, (50), 50 states have call predecessors, (50), 152 states have return successors, (499), 139 states have call predecessors, (499), 49 states have call successors, (499)
[2023-03-30 22:53:47,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11267 states to 11267 states and 17354 transitions.
[2023-03-30 22:53:47,346 INFO  L78                 Accepts]: Start accepts. Automaton has 11267 states and 17354 transitions. Word has length 1724
[2023-03-30 22:53:47,346 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 22:53:47,346 INFO  L495      AbstractCegarLoop]: Abstraction has 11267 states and 17354 transitions.
[2023-03-30 22:53:47,348 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 338.4) internal successors, (1692), 4 states have internal predecessors, (1692), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2023-03-30 22:53:47,348 INFO  L276                IsEmpty]: Start isEmpty. Operand 11267 states and 17354 transitions.