/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label08.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 04:58:40,554 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 04:58:40,557 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2022-01-10 04:58:40,625 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 04:58:40,627 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 04:58:40,631 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 04:58:40,640 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 04:58:40,641 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 04:58:40,641 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 04:58:40,642 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 04:58:40,644 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 04:58:40,645 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 04:58:40,646 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 04:58:40,652 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 04:58:40,653 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 04:58:40,654 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 04:58:40,656 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 04:58:40,657 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 04:58:40,658 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-01-10 04:58:40,659 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 04:58:40,659 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 04:58:40,660 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 04:58:40,660 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 04:58:40,661 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 04:58:40,662 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 04:58:40,662 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 04:58:40,663 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 04:58:40,663 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 04:58:40,663 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 04:58:40,664 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 04:58:40,665 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2022-01-10 04:58:40,685 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 04:58:40,685 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 04:58:40,686 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 04:58:40,686 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 04:58:40,687 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 04:58:40,687 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 04:58:40,687 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 04:58:40,687 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 04:58:40,688 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 04:58:40,688 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 04:58:40,689 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 04:58:40,689 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 04:58:40,689 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 04:58:40,689 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 04:58:40,689 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 04:58:40,689 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 04:58:40,689 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 04:58:40,689 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 04:58:40,690 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 04:58:40,690 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 04:58:40,690 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 04:58:40,690 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 04:58:40,690 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 04:58:40,690 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 04:58:40,692 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 04:58:40,692 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 04:58:40,692 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 04:58:40,692 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 04:58:40,692 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 04:58:40,692 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 04:58:40,692 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 04:58:40,693 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 04:58:40,693 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 04:58:40,693 INFO  L138        SettingsManager]:  * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 04:58:40,940 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 04:58:40,965 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 04:58:40,970 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 04:58:40,971 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 04:58:40,972 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 04:58:40,973 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label08.c
[2022-01-10 04:58:41,037 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee12bb687/d02fe9f64e7143a799d4aaad66a29eae/FLAG33b93476f
[2022-01-10 04:58:41,571 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 04:58:41,571 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label08.c
[2022-01-10 04:58:41,589 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee12bb687/d02fe9f64e7143a799d4aaad66a29eae/FLAG33b93476f
[2022-01-10 04:58:41,847 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee12bb687/d02fe9f64e7143a799d4aaad66a29eae
[2022-01-10 04:58:41,849 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 04:58:41,850 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 04:58:41,851 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 04:58:41,851 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 04:58:41,854 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 04:58:41,854 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:58:41" (1/1) ...
[2022-01-10 04:58:41,855 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a34ec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:41, skipping insertion in model container
[2022-01-10 04:58:41,855 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:58:41" (1/1) ...
[2022-01-10 04:58:41,861 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 04:58:41,915 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 04:58:42,153 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label08.c[2283,2296]
[2022-01-10 04:58:42,422 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 04:58:42,434 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 04:58:42,448 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label08.c[2283,2296]
[2022-01-10 04:58:42,576 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 04:58:42,589 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 04:58:42,590 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42 WrapperNode
[2022-01-10 04:58:42,590 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 04:58:42,591 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 04:58:42,591 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 04:58:42,591 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 04:58:42,597 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,625 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,699 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997
[2022-01-10 04:58:42,699 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 04:58:42,700 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 04:58:42,700 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 04:58:42,701 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 04:58:42,708 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,708 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,722 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,722 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,767 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,786 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,792 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,804 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 04:58:42,805 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 04:58:42,805 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 04:58:42,805 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 04:58:42,806 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (1/1) ...
[2022-01-10 04:58:42,821 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 04:58:42,832 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 04:58:42,845 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 04:58:42,854 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 04:58:42,894 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 04:58:42,894 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 04:58:42,894 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 04:58:42,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 04:58:42,961 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 04:58:42,962 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 04:58:49,279 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 04:58:49,290 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 04:58:49,290 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 04:58:49,292 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:58:49 BoogieIcfgContainer
[2022-01-10 04:58:49,292 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 04:58:49,293 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 04:58:49,294 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 04:58:49,296 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 04:58:49,296 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:58:41" (1/3) ...
[2022-01-10 04:58:49,297 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ecfa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:58:49, skipping insertion in model container
[2022-01-10 04:58:49,297 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:58:42" (2/3) ...
[2022-01-10 04:58:49,297 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ecfa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:58:49, skipping insertion in model container
[2022-01-10 04:58:49,297 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:58:49" (3/3) ...
[2022-01-10 04:58:49,298 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem11_label08.c
[2022-01-10 04:58:49,302 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 04:58:49,303 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 04:58:49,343 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 04:58:49,354 INFO  L339      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, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 04:58:49,354 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 04:58:49,380 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:58:49,384 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-10 04:58:49,385 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:58:49,385 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 04:58:49,386 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:58:49,390 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:58:49,390 INFO  L85        PathProgramCache]: Analyzing trace with hash -884752143, now seen corresponding path program 1 times
[2022-01-10 04:58:49,400 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:58:49,401 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929340366]
[2022-01-10 04:58:49,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:58:49,402 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:58:49,402 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:58:49,404 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 04:58:49,408 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-01-10 04:58:49,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:58:49,481 INFO  L263         TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 04:58:49,508 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:58:49,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:58:49,625 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:58:49,625 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:58:49,626 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929340366]
[2022-01-10 04:58:49,626 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [929340366] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:58:49,626 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:58:49,626 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 04:58:49,628 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063689382]
[2022-01-10 04:58:49,628 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:58:49,632 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:58:49,632 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:58:49,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:58:49,670 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:58:49,672 INFO  L87              Difference]: Start difference. First operand  has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:58:56,852 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:58:56,852 INFO  L93              Difference]: Finished difference Result 775 states and 1362 transitions.
[2022-01-10 04:58:56,860 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:58:56,861 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2022-01-10 04:58:56,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:58:56,873 INFO  L225             Difference]: With dead ends: 775
[2022-01-10 04:58:56,873 INFO  L226             Difference]: Without dead ends: 412
[2022-01-10 04:58:56,876 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:58:56,879 INFO  L933         BasicCegarLoop]: 167 mSDtfsCounter, 210 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time
[2022-01-10 04:58:56,880 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 196 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time]
[2022-01-10 04:58:56,893 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 412 states.
[2022-01-10 04:58:56,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 409.
[2022-01-10 04:58:56,926 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 409 states, 408 states have (on average 1.4583333333333333) internal successors, (595), 408 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:58:56,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 595 transitions.
[2022-01-10 04:58:56,931 INFO  L78                 Accepts]: Start accepts. Automaton has 409 states and 595 transitions. Word has length 15
[2022-01-10 04:58:56,931 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:58:56,931 INFO  L470      AbstractCegarLoop]: Abstraction has 409 states and 595 transitions.
[2022-01-10 04:58:56,932 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:58:56,932 INFO  L276                IsEmpty]: Start isEmpty. Operand 409 states and 595 transitions.
[2022-01-10 04:58:56,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2022-01-10 04:58:56,934 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:58:56,934 INFO  L514         BasicCegarLoop]: trace histogram [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]
[2022-01-10 04:58:56,943 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2022-01-10 04:58:57,136 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 04:58:57,136 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:58:57,137 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:58:57,137 INFO  L85        PathProgramCache]: Analyzing trace with hash -768550824, now seen corresponding path program 1 times
[2022-01-10 04:58:57,138 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:58:57,139 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482446207]
[2022-01-10 04:58:57,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:58:57,139 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:58:57,139 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:58:57,140 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 04:58:57,142 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-01-10 04:58:57,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:58:57,232 INFO  L263         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 04:58:57,235 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:58:57,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:58:57,507 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:58:57,508 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:58:57,508 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482446207]
[2022-01-10 04:58:57,508 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [482446207] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:58:57,508 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:58:57,508 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 04:58:57,508 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548488963]
[2022-01-10 04:58:57,509 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:58:57,510 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:58:57,510 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:58:57,511 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:58:57,511 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:58:57,511 INFO  L87              Difference]: Start difference. First operand 409 states and 595 transitions. Second operand  has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:05,726 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:59:05,726 INFO  L93              Difference]: Finished difference Result 1199 states and 1751 transitions.
[2022-01-10 04:59:05,733 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:59:05,733 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83
[2022-01-10 04:59:05,734 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:59:05,738 INFO  L225             Difference]: With dead ends: 1199
[2022-01-10 04:59:05,738 INFO  L226             Difference]: Without dead ends: 792
[2022-01-10 04:59:05,739 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:59:05,740 INFO  L933         BasicCegarLoop]: 163 mSDtfsCounter, 132 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-01-10 04:59:05,741 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 183 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-01-10 04:59:05,742 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 792 states.
[2022-01-10 04:59:05,769 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 781.
[2022-01-10 04:59:05,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 781 states, 780 states have (on average 1.3474358974358975) internal successors, (1051), 780 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:05,774 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1051 transitions.
[2022-01-10 04:59:05,774 INFO  L78                 Accepts]: Start accepts. Automaton has 781 states and 1051 transitions. Word has length 83
[2022-01-10 04:59:05,774 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:59:05,775 INFO  L470      AbstractCegarLoop]: Abstraction has 781 states and 1051 transitions.
[2022-01-10 04:59:05,775 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:05,775 INFO  L276                IsEmpty]: Start isEmpty. Operand 781 states and 1051 transitions.
[2022-01-10 04:59:05,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2022-01-10 04:59:05,777 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:59:05,777 INFO  L514         BasicCegarLoop]: trace histogram [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]
[2022-01-10 04:59:05,788 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0
[2022-01-10 04:59:05,987 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 04:59:05,988 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:59:05,988 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:59:05,989 INFO  L85        PathProgramCache]: Analyzing trace with hash -947186147, now seen corresponding path program 1 times
[2022-01-10 04:59:05,989 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:59:05,989 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946993402]
[2022-01-10 04:59:05,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:59:05,990 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:59:05,990 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:59:05,991 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 04:59:05,993 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-01-10 04:59:06,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:59:06,105 INFO  L263         TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 04:59:06,107 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:59:06,338 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:59:06,339 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:59:06,339 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:59:06,339 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946993402]
[2022-01-10 04:59:06,339 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [946993402] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:59:06,339 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:59:06,339 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 04:59:06,340 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22209093]
[2022-01-10 04:59:06,340 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:59:06,340 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:59:06,341 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:59:06,341 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:59:06,341 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:59:06,341 INFO  L87              Difference]: Start difference. First operand 781 states and 1051 transitions. Second operand  has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:13,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:59:13,978 INFO  L93              Difference]: Finished difference Result 1929 states and 2651 transitions.
[2022-01-10 04:59:13,986 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:59:13,987 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86
[2022-01-10 04:59:13,987 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:59:13,992 INFO  L225             Difference]: With dead ends: 1929
[2022-01-10 04:59:13,992 INFO  L226             Difference]: Without dead ends: 1150
[2022-01-10 04:59:13,993 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:59:13,994 INFO  L933         BasicCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time
[2022-01-10 04:59:13,995 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time]
[2022-01-10 04:59:13,997 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1150 states.
[2022-01-10 04:59:14,017 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150.
[2022-01-10 04:59:14,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1150 states, 1149 states have (on average 1.2567449956483898) internal successors, (1444), 1149 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:14,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1444 transitions.
[2022-01-10 04:59:14,023 INFO  L78                 Accepts]: Start accepts. Automaton has 1150 states and 1444 transitions. Word has length 86
[2022-01-10 04:59:14,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:59:14,023 INFO  L470      AbstractCegarLoop]: Abstraction has 1150 states and 1444 transitions.
[2022-01-10 04:59:14,023 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:14,024 INFO  L276                IsEmpty]: Start isEmpty. Operand 1150 states and 1444 transitions.
[2022-01-10 04:59:14,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2022-01-10 04:59:14,027 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:59:14,027 INFO  L514         BasicCegarLoop]: trace histogram [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]
[2022-01-10 04:59:14,041 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-01-10 04:59:14,241 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 04:59:14,241 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:59:14,242 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:59:14,243 INFO  L85        PathProgramCache]: Analyzing trace with hash -354402947, now seen corresponding path program 1 times
[2022-01-10 04:59:14,245 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:59:14,245 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248480902]
[2022-01-10 04:59:14,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:59:14,245 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:59:14,245 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:59:14,246 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 04:59:14,248 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-01-10 04:59:14,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:59:14,337 INFO  L263         TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-01-10 04:59:14,340 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:59:14,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:59:14,602 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:59:14,602 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:59:14,602 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248480902]
[2022-01-10 04:59:14,602 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [248480902] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:59:14,602 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:59:14,602 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 04:59:14,603 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670511478]
[2022-01-10 04:59:14,603 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:59:14,603 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:59:14,603 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:59:14,604 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:59:14,604 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:59:14,604 INFO  L87              Difference]: Start difference. First operand 1150 states and 1444 transitions. Second operand  has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:21,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:59:21,428 INFO  L93              Difference]: Finished difference Result 2314 states and 3055 transitions.
[2022-01-10 04:59:21,434 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:59:21,434 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142
[2022-01-10 04:59:21,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:59:21,440 INFO  L225             Difference]: With dead ends: 2314
[2022-01-10 04:59:21,440 INFO  L226             Difference]: Without dead ends: 1534
[2022-01-10 04:59:21,441 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:59:21,442 INFO  L933         BasicCegarLoop]: 316 mSDtfsCounter, 190 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time
[2022-01-10 04:59:21,443 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 337 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time]
[2022-01-10 04:59:21,444 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1534 states.
[2022-01-10 04:59:21,462 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1526.
[2022-01-10 04:59:21,464 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1526 states, 1525 states have (on average 1.2445901639344261) internal successors, (1898), 1525 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:21,467 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1898 transitions.
[2022-01-10 04:59:21,468 INFO  L78                 Accepts]: Start accepts. Automaton has 1526 states and 1898 transitions. Word has length 142
[2022-01-10 04:59:21,468 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:59:21,468 INFO  L470      AbstractCegarLoop]: Abstraction has 1526 states and 1898 transitions.
[2022-01-10 04:59:21,468 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:21,469 INFO  L276                IsEmpty]: Start isEmpty. Operand 1526 states and 1898 transitions.
[2022-01-10 04:59:21,471 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2022-01-10 04:59:21,472 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:59:21,472 INFO  L514         BasicCegarLoop]: trace histogram [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, 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]
[2022-01-10 04:59:21,482 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0
[2022-01-10 04:59:21,680 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 04:59:21,681 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:59:21,681 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:59:21,682 INFO  L85        PathProgramCache]: Analyzing trace with hash -660289931, now seen corresponding path program 1 times
[2022-01-10 04:59:21,683 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:59:21,683 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335491900]
[2022-01-10 04:59:21,684 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:59:21,684 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:59:21,684 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:59:21,685 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 04:59:21,686 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-01-10 04:59:21,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:59:21,850 INFO  L263         TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 04:59:21,854 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:59:23,281 INFO  L134       CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:59:23,281 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 04:59:26,300 INFO  L134       CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:59:26,300 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:59:26,300 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335491900]
[2022-01-10 04:59:26,300 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [335491900] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-10 04:59:26,301 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 04:59:26,301 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2022-01-10 04:59:26,301 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800209504]
[2022-01-10 04:59:26,301 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:59:26,304 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:59:26,304 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:59:26,305 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:59:26,305 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 04:59:26,305 INFO  L87              Difference]: Start difference. First operand 1526 states and 1898 transitions. Second operand  has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:50,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:59:50,978 INFO  L93              Difference]: Finished difference Result 2493 states and 3284 transitions.
[2022-01-10 04:59:50,984 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:59:50,985 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196
[2022-01-10 04:59:50,985 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:59:50,992 INFO  L225             Difference]: With dead ends: 2493
[2022-01-10 04:59:50,992 INFO  L226             Difference]: Without dead ends: 1895
[2022-01-10 04:59:50,993 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 04:59:50,994 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time
[2022-01-10 04:59:50,994 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 38 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 24.6s Time]
[2022-01-10 04:59:50,996 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1895 states.
[2022-01-10 04:59:51,023 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1895.
[2022-01-10 04:59:51,027 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1895 states, 1894 states have (on average 1.2703273495248153) internal successors, (2406), 1894 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:51,031 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2406 transitions.
[2022-01-10 04:59:51,032 INFO  L78                 Accepts]: Start accepts. Automaton has 1895 states and 2406 transitions. Word has length 196
[2022-01-10 04:59:51,032 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:59:51,032 INFO  L470      AbstractCegarLoop]: Abstraction has 1895 states and 2406 transitions.
[2022-01-10 04:59:51,033 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 04:59:51,033 INFO  L276                IsEmpty]: Start isEmpty. Operand 1895 states and 2406 transitions.
[2022-01-10 04:59:51,038 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2022-01-10 04:59:51,038 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:59:51,038 INFO  L514         BasicCegarLoop]: trace histogram [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, 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]
[2022-01-10 04:59:51,051 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2022-01-10 04:59:51,251 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 04:59:51,251 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:59:51,252 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:59:51,252 INFO  L85        PathProgramCache]: Analyzing trace with hash -1449764967, now seen corresponding path program 1 times
[2022-01-10 04:59:51,253 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:59:51,254 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690455072]
[2022-01-10 04:59:51,254 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:59:51,254 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:59:51,254 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:59:51,255 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 04:59:51,256 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2022-01-10 04:59:51,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:59:51,375 INFO  L263         TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 04:59:51,379 INFO  L286         TraceCheckSpWp]: Computing forward predicates...