/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/Problem19_label20.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-03-30 23:48:44,880 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-03-30 23:48:44,882 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-03-30 23:48:44,945 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2023-03-30 23:48:44,953 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-03-30 23:48:44,955 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2023-03-30 23:48:44,964 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-03-30 23:48:44,964 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-03-30 23:48:44,965 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-03-30 23:48:44,965 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2023-03-30 23:48:44,966 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-03-30 23:48:44,967 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-03-30 23:48:44,973 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 23:48:45,002 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-03-30 23:48:45,002 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-03-30 23:48:45,002 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-03-30 23:48:45,002 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-03-30 23:48:45,003 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-03-30 23:48:45,003 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-03-30 23:48:45,004 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-03-30 23:48:45,004 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-03-30 23:48:45,004 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-03-30 23:48:45,004 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-03-30 23:48:45,004 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-03-30 23:48:45,012 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-03-30 23:48:45,013 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-03-30 23:48:45,013 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-03-30 23:48:45,013 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-03-30 23:48:45,013 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-03-30 23:48:45,014 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-03-30 23:48:45,014 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-03-30 23:48:45,014 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-03-30 23:48:45,014 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-03-30 23:48:45,014 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-03-30 23:48:45,014 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-03-30 23:48:45,014 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-03-30 23:48:45,015 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-03-30 23:48:45,015 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-30 23:48:45,015 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-03-30 23:48:45,015 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-03-30 23:48:45,015 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-03-30 23:48:45,016 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-03-30 23:48:45,016 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-03-30 23:48:45,016 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-03-30 23:48:45,016 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-03-30 23:48:45,017 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-03-30 23:48:45,017 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-03-30 23:48:45,017 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-03-30 23:48:45,017 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-03-30 23:48:45,260 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-03-30 23:48:45,282 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-03-30 23:48:45,284 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-03-30 23:48:45,285 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-03-30 23:48:45,285 INFO  L275        PluginConnector]: CDTParser initialized
[2023-03-30 23:48:45,287 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label20.c
[2023-03-30 23:48:46,516 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-03-30 23:48:47,104 INFO  L351              CDTParser]: Found 1 translation units.
[2023-03-30 23:48:47,105 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label20.c
[2023-03-30 23:48:47,134 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f225739/b565d282e2ab4dcabfda6df95379de13/FLAGecd8e010f
[2023-03-30 23:48:47,152 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f225739/b565d282e2ab4dcabfda6df95379de13
[2023-03-30 23:48:47,154 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-03-30 23:48:47,156 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-03-30 23:48:47,157 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-03-30 23:48:47,157 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-03-30 23:48:47,161 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-03-30 23:48:47,161 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:48:47" (1/1) ...
[2023-03-30 23:48:47,163 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189cb305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:47, skipping insertion in model container
[2023-03-30 23:48:47,163 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:48:47" (1/1) ...
[2023-03-30 23:48:47,169 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-03-30 23:48:47,347 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-03-30 23:48:47,607 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/Problem19_label20.c[5771,5784]
[2023-03-30 23:48:48,781 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-30 23:48:48,791 INFO  L203         MainTranslator]: Completed pre-run
[2023-03-30 23:48:48,820 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/Problem19_label20.c[5771,5784]
[2023-03-30 23:48:49,509 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-30 23:48:49,542 INFO  L208         MainTranslator]: Completed translation
[2023-03-30 23:48:49,543 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49 WrapperNode
[2023-03-30 23:48:49,543 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-03-30 23:48:49,544 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-03-30 23:48:49,544 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-03-30 23:48:49,544 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-03-30 23:48:49,555 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:49,555 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:49,646 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:49,646 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:49,845 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:49,882 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:49,921 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:50,006 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:50,086 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-03-30 23:48:50,087 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-03-30 23:48:50,087 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-03-30 23:48:50,087 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-03-30 23:48:50,088 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (1/1) ...
[2023-03-30 23:48:50,094 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-30 23:48:50,104 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 23:48:50,118 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 23:48:50,140 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 23:48:50,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-03-30 23:48:50,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-03-30 23:48:50,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-03-30 23:48:50,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-03-30 23:48:50,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-03-30 23:48:50,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-03-30 23:48:50,159 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-03-30 23:48:50,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2023-03-30 23:48:50,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2023-03-30 23:48:50,160 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-03-30 23:48:50,160 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-03-30 23:48:50,161 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-03-30 23:48:50,252 INFO  L236             CfgBuilder]: Building ICFG
[2023-03-30 23:48:50,255 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-03-30 23:48:57,638 INFO  L277             CfgBuilder]: Performing block encoding
[2023-03-30 23:48:57,655 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-03-30 23:48:57,656 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-03-30 23:48:57,660 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:48:57 BoogieIcfgContainer
[2023-03-30 23:48:57,660 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-03-30 23:48:57,662 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-03-30 23:48:57,662 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-03-30 23:48:57,665 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-03-30 23:48:57,665 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:48:47" (1/3) ...
[2023-03-30 23:48:57,666 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c64ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:48:57, skipping insertion in model container
[2023-03-30 23:48:57,666 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:49" (2/3) ...
[2023-03-30 23:48:57,666 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c64ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:48:57, skipping insertion in model container
[2023-03-30 23:48:57,667 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:48:57" (3/3) ...
[2023-03-30 23:48:57,668 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem19_label20.c
[2023-03-30 23:48:57,684 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-03-30 23:48:57,684 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-03-30 23:48:57,754 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-03-30 23:48:57,760 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;@1d8d09a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-03-30 23:48:57,761 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-03-30 23:48:57,770 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2023-03-30 23:48:57,778 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2023-03-30 23:48:57,778 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 23:48:57,779 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]
[2023-03-30 23:48:57,780 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 23:48:57,784 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 23:48:57,784 INFO  L85        PathProgramCache]: Analyzing trace with hash -2146413320, now seen corresponding path program 1 times
[2023-03-30 23:48:57,792 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 23:48:57,793 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765593637]
[2023-03-30 23:48:57,793 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 23:48:57,793 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 23:48:57,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:48:58,343 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 23:48:58,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:48:58,402 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 23:48:58,403 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 23:48:58,403 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765593637]
[2023-03-30 23:48:58,404 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765593637] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 23:48:58,404 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 23:48:58,404 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-03-30 23:48:58,405 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661021785]
[2023-03-30 23:48:58,406 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 23:48:58,410 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-03-30 23:48:58,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 23:48:58,467 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-03-30 23:48:58,468 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-03-30 23:48:58,473 INFO  L87              Difference]: Start difference. First operand  has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand  has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-30 23:49:12,795 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 23:49:12,796 INFO  L93              Difference]: Finished difference Result 6483 states and 12306 transitions.
[2023-03-30 23:49:12,797 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-03-30 23:49:12,798 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (3), 2 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 49
[2023-03-30 23:49:12,799 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 23:49:12,835 INFO  L225             Difference]: With dead ends: 6483
[2023-03-30 23:49:12,835 INFO  L226             Difference]: Without dead ends: 4638
[2023-03-30 23:49:12,848 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 23:49:12,853 INFO  L413           NwaCegarLoop]: 236 mSDtfsCounter, 7913 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 9147 mSolverCounterSat, 3639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7913 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 12786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3639 IncrementalHoareTripleChecker+Valid, 9147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time
[2023-03-30 23:49:12,855 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7913 Valid, 495 Invalid, 12786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3639 Valid, 9147 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time]
[2023-03-30 23:49:12,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4638 states.
[2023-03-30 23:49:13,035 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 4629.
[2023-03-30 23:49:13,045 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4629 states, 4571 states have (on average 1.6764384161015096) internal successors, (7663), 4574 states have internal predecessors, (7663), 20 states have call successors, (20), 20 states have call predecessors, (20), 37 states have return successors, (77), 34 states have call predecessors, (77), 19 states have call successors, (77)
[2023-03-30 23:49:13,065 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7760 transitions.
[2023-03-30 23:49:13,067 INFO  L78                 Accepts]: Start accepts. Automaton has 4629 states and 7760 transitions. Word has length 49
[2023-03-30 23:49:13,068 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 23:49:13,069 INFO  L495      AbstractCegarLoop]: Abstraction has 4629 states and 7760 transitions.
[2023-03-30 23:49:13,069 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-30 23:49:13,069 INFO  L276                IsEmpty]: Start isEmpty. Operand 4629 states and 7760 transitions.
[2023-03-30 23:49:13,077 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 139
[2023-03-30 23:49:13,078 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 23:49:13,078 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-03-30 23:49:13,078 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-03-30 23:49:13,079 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 23:49:13,080 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 23:49:13,080 INFO  L85        PathProgramCache]: Analyzing trace with hash -1222689296, now seen corresponding path program 1 times
[2023-03-30 23:49:13,080 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 23:49:13,081 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283016198]
[2023-03-30 23:49:13,081 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 23:49:13,082 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 23:49:13,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:13,456 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 23:49:13,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:13,476 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-03-30 23:49:13,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:13,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 23:49:13,679 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 23:49:13,679 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283016198]
[2023-03-30 23:49:13,679 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283016198] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 23:49:13,679 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 23:49:13,679 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-03-30 23:49:13,680 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854263905]
[2023-03-30 23:49:13,680 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 23:49:13,681 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-03-30 23:49:13,681 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 23:49:13,682 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-03-30 23:49:13,682 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-03-30 23:49:13,682 INFO  L87              Difference]: Start difference. First operand 4629 states and 7760 transitions. Second operand  has 7 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-30 23:49:25,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 23:49:25,226 INFO  L93              Difference]: Finished difference Result 13839 states and 23542 transitions.
[2023-03-30 23:49:25,227 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-03-30 23:49:25,228 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 138
[2023-03-30 23:49:25,231 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 23:49:25,286 INFO  L225             Difference]: With dead ends: 13839
[2023-03-30 23:49:25,287 INFO  L226             Difference]: Without dead ends: 9216
[2023-03-30 23:49:25,372 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2023-03-30 23:49:25,373 INFO  L413           NwaCegarLoop]: 259 mSDtfsCounter, 8095 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 10002 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8095 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 12127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 10002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time
[2023-03-30 23:49:25,374 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8095 Valid, 897 Invalid, 12127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2125 Valid, 10002 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time]
[2023-03-30 23:49:25,391 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9216 states.
[2023-03-30 23:49:25,722 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9216 to 9059.
[2023-03-30 23:49:25,738 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9059 states, 8892 states have (on average 1.4508547008547008) internal successors, (12901), 8909 states have internal predecessors, (12901), 38 states have call successors, (38), 38 states have call predecessors, (38), 128 states have return successors, (405), 111 states have call predecessors, (405), 37 states have call successors, (405)
[2023-03-30 23:49:25,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9059 states to 9059 states and 13344 transitions.
[2023-03-30 23:49:25,768 INFO  L78                 Accepts]: Start accepts. Automaton has 9059 states and 13344 transitions. Word has length 138
[2023-03-30 23:49:25,770 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 23:49:25,770 INFO  L495      AbstractCegarLoop]: Abstraction has 9059 states and 13344 transitions.
[2023-03-30 23:49:25,770 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-30 23:49:25,770 INFO  L276                IsEmpty]: Start isEmpty. Operand 9059 states and 13344 transitions.
[2023-03-30 23:49:25,778 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 184
[2023-03-30 23:49:25,778 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 23:49:25,779 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-03-30 23:49:25,779 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-03-30 23:49:25,780 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 23:49:25,781 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 23:49:25,781 INFO  L85        PathProgramCache]: Analyzing trace with hash 1265210883, now seen corresponding path program 1 times
[2023-03-30 23:49:25,781 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 23:49:25,781 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166701432]
[2023-03-30 23:49:25,781 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 23:49:25,782 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 23:49:25,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:26,159 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 23:49:26,162 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:26,182 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-03-30 23:49:26,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:26,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-30 23:49:26,429 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 23:49:26,429 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166701432]
[2023-03-30 23:49:26,429 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166701432] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-30 23:49:26,429 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-30 23:49:26,429 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-03-30 23:49:26,429 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544250136]
[2023-03-30 23:49:26,429 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-30 23:49:26,430 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-03-30 23:49:26,430 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-03-30 23:49:26,431 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-03-30 23:49:26,431 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-03-30 23:49:26,431 INFO  L87              Difference]: Start difference. First operand 9059 states and 13344 transitions. Second operand  has 7 states, 6 states have (on average 29.5) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-30 23:49:37,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-30 23:49:37,821 INFO  L93              Difference]: Finished difference Result 27892 states and 42478 transitions.
[2023-03-30 23:49:37,821 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-03-30 23:49:37,822 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 29.5) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183
[2023-03-30 23:49:37,822 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-30 23:49:37,900 INFO  L225             Difference]: With dead ends: 27892
[2023-03-30 23:49:37,900 INFO  L226             Difference]: Without dead ends: 18839
[2023-03-30 23:49:37,928 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2023-03-30 23:49:37,931 INFO  L413           NwaCegarLoop]: 273 mSDtfsCounter, 8876 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 10686 mSolverCounterSat, 2137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8876 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 12823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2137 IncrementalHoareTripleChecker+Valid, 10686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time
[2023-03-30 23:49:37,932 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8876 Valid, 1115 Invalid, 12823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2137 Valid, 10686 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time]
[2023-03-30 23:49:37,952 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18839 states.
[2023-03-30 23:49:38,348 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18839 to 18417.
[2023-03-30 23:49:38,382 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18417 states, 17885 states have (on average 1.2923679060665363) internal successors, (23114), 17964 states have internal predecessors, (23114), 74 states have call successors, (74), 74 states have call predecessors, (74), 457 states have return successors, (1799), 378 states have call predecessors, (1799), 73 states have call successors, (1799)
[2023-03-30 23:49:38,419 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18417 states to 18417 states and 24987 transitions.
[2023-03-30 23:49:38,420 INFO  L78                 Accepts]: Start accepts. Automaton has 18417 states and 24987 transitions. Word has length 183
[2023-03-30 23:49:38,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-30 23:49:38,421 INFO  L495      AbstractCegarLoop]: Abstraction has 18417 states and 24987 transitions.
[2023-03-30 23:49:38,422 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 29.5) internal successors, (177), 4 states have internal predecessors, (177), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-30 23:49:38,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 18417 states and 24987 transitions.
[2023-03-30 23:49:38,425 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 203
[2023-03-30 23:49:38,425 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-30 23:49:38,425 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2023-03-30 23:49:38,425 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-03-30 23:49:38,426 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-30 23:49:38,426 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-30 23:49:38,426 INFO  L85        PathProgramCache]: Analyzing trace with hash 2023351052, now seen corresponding path program 1 times
[2023-03-30 23:49:38,426 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-03-30 23:49:38,428 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183773743]
[2023-03-30 23:49:38,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 23:49:38,428 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-30 23:49:38,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:38,719 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2023-03-30 23:49:38,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:38,736 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-03-30 23:49:38,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:38,836 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89
[2023-03-30 23:49:38,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:38,865 INFO  L134       CoverageAnalysis]: Checked inductivity of 156 backedges. 84 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-03-30 23:49:38,865 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-03-30 23:49:38,865 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183773743]
[2023-03-30 23:49:38,865 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183773743] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-30 23:49:38,865 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112275630]
[2023-03-30 23:49:38,866 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-30 23:49:38,866 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-30 23:49:38,867 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-30 23:49:38,873 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 23:49:38,901 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 23:49:38,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-30 23:49:38,994 INFO  L262         TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-03-30 23:49:39,007 INFO  L285         TraceCheckSpWp]: Computing forward predicates...