/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/Problem03_label51.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 04:23:13,690 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 04:23:13,692 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 04:23:13,734 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 04:23:13,735 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 04:23:13,743 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 04:23:13,746 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 04:23:13,756 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 04:23:13,757 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 04:23:13,758 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 04:23:13,760 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 04:23:13,761 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 04:23:13,761 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 04:23:13,763 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 04:23:13,767 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 04:23:13,768 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 04:23:13,769 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 04:23:13,770 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 04:23:13,771 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 04:23:13,777 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 04:23:13,777 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 04:23:13,777 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 04:23:13,778 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 04:23:13,779 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 04:23:13,779 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 04:23:13,779 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 04:23:13,780 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 04:23:13,781 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 04:23:13,782 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 04:23:13,783 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 04:23:13,783 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 04:23:13,783 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 04:23:13,783 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 04:23:13,783 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 04:23:13,784 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 04:23:13,784 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 04:23:13,785 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 04:23:13,814 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 04:23:13,814 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 04:23:13,815 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 04:23:13,815 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 04:23:13,816 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 04:23:13,816 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 04:23:13,816 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 04:23:13,816 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 04:23:13,816 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 04:23:13,816 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 04:23:13,817 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 04:23:13,817 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 04:23:13,817 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 04:23:13,818 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 04:23:13,818 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 04:23:13,818 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 04:23:13,818 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 04:23:13,818 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 04:23:13,818 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 04:23:13,818 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 04:23:13,818 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 04:23:13,818 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 04:23:13,819 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 04:23:13,819 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 04:23:13,820 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 04:23:13,820 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 04:23:13,820 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 04:23:13,820 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 04:23:13,820 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 04:23:13,820 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 04:23:13,821 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 04:23:13,821 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 04:23:13,821 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 04:23:13,821 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 04:23:14,016 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 04:23:14,040 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 04:23:14,042 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 04:23:14,043 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 04:23:14,043 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 04:23:14,044 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label51.c
[2022-01-10 04:23:14,091 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6beab944f/6ae59f42fa764e4684f4b86edcbd4b9b/FLAG741d838e2
[2022-01-10 04:23:14,566 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 04:23:14,567 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label51.c
[2022-01-10 04:23:14,583 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6beab944f/6ae59f42fa764e4684f4b86edcbd4b9b/FLAG741d838e2
[2022-01-10 04:23:14,882 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6beab944f/6ae59f42fa764e4684f4b86edcbd4b9b
[2022-01-10 04:23:14,884 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 04:23:14,885 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 04:23:14,887 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 04:23:14,887 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 04:23:14,889 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 04:23:14,890 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:23:14" (1/1) ...
[2022-01-10 04:23:14,891 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93d86ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:14, skipping insertion in model container
[2022-01-10 04:23:14,891 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:23:14" (1/1) ...
[2022-01-10 04:23:14,896 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 04:23:14,961 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 04:23:15,385 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/Problem03_label51.c[59610,59623]
[2022-01-10 04:23:15,404 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 04:23:15,411 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 04:23:15,535 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/Problem03_label51.c[59610,59623]
[2022-01-10 04:23:15,543 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 04:23:15,558 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 04:23:15,558 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15 WrapperNode
[2022-01-10 04:23:15,559 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 04:23:15,559 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 04:23:15,559 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 04:23:15,559 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 04:23:15,564 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,585 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,633 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769
[2022-01-10 04:23:15,634 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 04:23:15,634 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 04:23:15,634 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 04:23:15,634 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 04:23:15,640 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,640 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,647 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,647 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,672 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,680 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,686 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,694 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 04:23:15,695 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 04:23:15,695 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 04:23:15,695 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 04:23:15,696 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (1/1) ...
[2022-01-10 04:23:15,704 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 04:23:15,713 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 04:23:15,722 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 04:23:15,755 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 04:23:15,781 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 04:23:15,782 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 04:23:15,782 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 04:23:15,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 04:23:15,866 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 04:23:15,867 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 04:23:17,326 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 04:23:17,332 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 04:23:17,332 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 04:23:17,334 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:23:17 BoogieIcfgContainer
[2022-01-10 04:23:17,334 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 04:23:17,335 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 04:23:17,335 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 04:23:17,337 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 04:23:17,337 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:23:14" (1/3) ...
[2022-01-10 04:23:17,337 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e60cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:23:17, skipping insertion in model container
[2022-01-10 04:23:17,337 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:23:15" (2/3) ...
[2022-01-10 04:23:17,338 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e60cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:23:17, skipping insertion in model container
[2022-01-10 04:23:17,338 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:23:17" (3/3) ...
[2022-01-10 04:23:17,338 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem03_label51.c
[2022-01-10 04:23:17,341 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 04:23:17,342 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 04:23:17,368 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 04:23:17,372 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 04:23:17,372 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 04:23:17,383 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 04:23:17,391 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 189
[2022-01-10 04:23:17,392 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:23:17,392 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 04:23:17,393 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:23:17,395 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:23:17,396 INFO  L85        PathProgramCache]: Analyzing trace with hash 951431538, now seen corresponding path program 1 times
[2022-01-10 04:23:17,406 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:23:17,406 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883473461]
[2022-01-10 04:23:17,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:23:17,406 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:23:17,407 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:23:17,408 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 04:23:17,450 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 04:23:17,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:23:17,558 INFO  L263         TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 33 conjunts are in the unsatisfiable core
[2022-01-10 04:23:17,581 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:23:28,409 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 04:23:28,410 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:23:28,410 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:23:28,410 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883473461]
[2022-01-10 04:23:28,411 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [883473461] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:23:28,411 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:23:28,411 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-01-10 04:23:28,412 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064735857]
[2022-01-10 04:23:28,413 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:23:28,417 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-10 04:23:28,417 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:23:28,453 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-10 04:23:28,454 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2022-01-10 04:23:28,458 INFO  L87              Difference]: Start difference. First operand  has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 8 states have internal predecessors, (188), 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 04:23:31,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:23:31,373 INFO  L93              Difference]: Finished difference Result 718 states and 1265 transitions.
[2022-01-10 04:23:31,375 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-10 04:23:31,376 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 8 states have internal predecessors, (188), 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 188
[2022-01-10 04:23:31,377 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:23:31,393 INFO  L225             Difference]: With dead ends: 718
[2022-01-10 04:23:31,393 INFO  L226             Difference]: Without dead ends: 352
[2022-01-10 04:23:31,400 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182
[2022-01-10 04:23:31,406 INFO  L933         BasicCegarLoop]: 339 mSDtfsCounter, 431 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2022-01-10 04:23:31,411 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 464 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time]
[2022-01-10 04:23:31,428 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 352 states.
[2022-01-10 04:23:31,481 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352.
[2022-01-10 04:23:31,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 352 states, 351 states have (on average 1.4586894586894588) internal successors, (512), 351 states have internal predecessors, (512), 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 04:23:31,483 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 512 transitions.
[2022-01-10 04:23:31,484 INFO  L78                 Accepts]: Start accepts. Automaton has 352 states and 512 transitions. Word has length 188
[2022-01-10 04:23:31,484 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:23:31,484 INFO  L470      AbstractCegarLoop]: Abstraction has 352 states and 512 transitions.
[2022-01-10 04:23:31,485 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 8 states have internal predecessors, (188), 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 04:23:31,485 INFO  L276                IsEmpty]: Start isEmpty. Operand 352 states and 512 transitions.
[2022-01-10 04:23:31,487 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2022-01-10 04:23:31,490 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:23:31,490 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 04:23:31,498 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2022-01-10 04:23:31,698 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 04:23:31,698 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:23:31,700 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:23:31,700 INFO  L85        PathProgramCache]: Analyzing trace with hash -1302577763, now seen corresponding path program 1 times
[2022-01-10 04:23:31,701 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:23:31,701 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072416263]
[2022-01-10 04:23:31,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:23:31,702 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:23:31,702 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:23:31,706 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 04:23:31,711 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 04:23:31,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:23:31,802 INFO  L263         TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 31 conjunts are in the unsatisfiable core
[2022-01-10 04:23:31,809 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:23:45,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:23:45,830 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:23:45,830 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:23:45,830 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072416263]
[2022-01-10 04:23:45,830 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072416263] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:23:45,831 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:23:45,831 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-01-10 04:23:45,832 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214522080]
[2022-01-10 04:23:45,834 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:23:45,835 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-10 04:23:45,836 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:23:45,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-10 04:23:45,837 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2022-01-10 04:23:45,838 INFO  L87              Difference]: Start difference. First operand 352 states and 512 transitions. Second operand  has 11 states, 11 states have (on average 17.727272727272727) internal successors, (195), 10 states have internal predecessors, (195), 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 04:23:51,285 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:23:51,285 INFO  L93              Difference]: Finished difference Result 1139 states and 1872 transitions.
[2022-01-10 04:23:51,286 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 04:23:51,286 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 17.727272727272727) internal successors, (195), 10 states have internal predecessors, (195), 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 195
[2022-01-10 04:23:51,286 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:23:51,289 INFO  L225             Difference]: With dead ends: 1139
[2022-01-10 04:23:51,289 INFO  L226             Difference]: Without dead ends: 902
[2022-01-10 04:23:51,289 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210
[2022-01-10 04:23:51,290 INFO  L933         BasicCegarLoop]: 189 mSDtfsCounter, 1374 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 5023 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 5272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 5023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2022-01-10 04:23:51,290 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 372 Invalid, 5272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 5023 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2022-01-10 04:23:51,292 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 902 states.
[2022-01-10 04:23:51,311 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 899.
[2022-01-10 04:23:51,312 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 899 states, 898 states have (on average 1.2360801781737194) internal successors, (1110), 898 states have internal predecessors, (1110), 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 04:23:51,314 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1110 transitions.
[2022-01-10 04:23:51,314 INFO  L78                 Accepts]: Start accepts. Automaton has 899 states and 1110 transitions. Word has length 195
[2022-01-10 04:23:51,315 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:23:51,315 INFO  L470      AbstractCegarLoop]: Abstraction has 899 states and 1110 transitions.
[2022-01-10 04:23:51,315 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 17.727272727272727) internal successors, (195), 10 states have internal predecessors, (195), 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 04:23:51,315 INFO  L276                IsEmpty]: Start isEmpty. Operand 899 states and 1110 transitions.
[2022-01-10 04:23:51,318 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 204
[2022-01-10 04:23:51,318 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:23:51,318 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 04:23:51,325 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 04:23:51,525 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 04:23:51,525 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:23:51,526 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:23:51,526 INFO  L85        PathProgramCache]: Analyzing trace with hash 1802692540, now seen corresponding path program 1 times
[2022-01-10 04:23:51,534 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:23:51,534 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543167307]
[2022-01-10 04:23:51,534 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:23:51,534 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:23:51,534 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:23:51,536 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 04:23:51,554 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 04:23:51,669 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:23:51,672 INFO  L263         TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-10 04:23:51,675 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:23:54,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 04:23:54,061 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:23:54,062 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:23:54,062 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543167307]
[2022-01-10 04:23:54,062 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [543167307] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:23:54,064 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:23:54,064 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 04:23:54,064 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128037367]
[2022-01-10 04:23:54,064 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:23:54,067 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 04:23:54,067 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:23:54,068 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 04:23:54,068 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-10 04:23:54,068 INFO  L87              Difference]: Start difference. First operand 899 states and 1110 transitions. Second operand  has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 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 04:23:55,100 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:23:55,100 INFO  L93              Difference]: Finished difference Result 1310 states and 1812 transitions.
[2022-01-10 04:23:55,100 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 04:23:55,101 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 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 203
[2022-01-10 04:23:55,102 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:23:55,115 INFO  L225             Difference]: With dead ends: 1310
[2022-01-10 04:23:55,116 INFO  L226             Difference]: Without dead ends: 887
[2022-01-10 04:23:55,117 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-10 04:23:55,117 INFO  L933         BasicCegarLoop]: 55 mSDtfsCounter, 354 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2022-01-10 04:23:55,118 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 78 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2022-01-10 04:23:55,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 887 states.
[2022-01-10 04:23:55,133 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887.
[2022-01-10 04:23:55,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 887 states, 886 states have (on average 1.1997742663656885) internal successors, (1063), 886 states have internal predecessors, (1063), 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 04:23:55,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1063 transitions.
[2022-01-10 04:23:55,145 INFO  L78                 Accepts]: Start accepts. Automaton has 887 states and 1063 transitions. Word has length 203
[2022-01-10 04:23:55,145 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:23:55,145 INFO  L470      AbstractCegarLoop]: Abstraction has 887 states and 1063 transitions.
[2022-01-10 04:23:55,146 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 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 04:23:55,146 INFO  L276                IsEmpty]: Start isEmpty. Operand 887 states and 1063 transitions.
[2022-01-10 04:23:55,147 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 217
[2022-01-10 04:23:55,147 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:23:55,148 INFO  L514         BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:55,158 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 04:23:55,357 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 04:23:55,357 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:23:55,357 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:23:55,358 INFO  L85        PathProgramCache]: Analyzing trace with hash -1209124904, now seen corresponding path program 1 times
[2022-01-10 04:23:55,359 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:23:55,359 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3908811]
[2022-01-10 04:23:55,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:23:55,359 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:23:55,359 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:23:55,360 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 04:23:55,361 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 04:23:55,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:23:55,459 INFO  L263         TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 04:23:55,462 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:23:55,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:23:55,795 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:23:55,796 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:23:55,796 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3908811]
[2022-01-10 04:23:55,796 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [3908811] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:23:55,796 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:23:55,796 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 04:23:55,796 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176281928]
[2022-01-10 04:23:55,796 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:23:55,796 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 04:23:55,796 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:23:55,797 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 04:23:55,797 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 04:23:55,797 INFO  L87              Difference]: Start difference. First operand 887 states and 1063 transitions. Second operand  has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 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 04:23:56,631 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:23:56,632 INFO  L93              Difference]: Finished difference Result 1330 states and 1741 transitions.
[2022-01-10 04:23:56,632 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 04:23:56,632 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 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 216
[2022-01-10 04:23:56,632 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:23:56,634 INFO  L225             Difference]: With dead ends: 1330
[2022-01-10 04:23:56,634 INFO  L226             Difference]: Without dead ends: 687
[2022-01-10 04:23:56,635 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 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 04:23:56,635 INFO  L933         BasicCegarLoop]: 160 mSDtfsCounter, 189 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-01-10 04:23:56,636 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 192 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-01-10 04:23:56,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 687 states.
[2022-01-10 04:23:56,649 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 684.
[2022-01-10 04:23:56,651 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 684 states, 683 states have (on average 1.225475841874085) internal successors, (837), 683 states have internal predecessors, (837), 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 04:23:56,652 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 837 transitions.
[2022-01-10 04:23:56,652 INFO  L78                 Accepts]: Start accepts. Automaton has 684 states and 837 transitions. Word has length 216
[2022-01-10 04:23:56,653 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:23:56,653 INFO  L470      AbstractCegarLoop]: Abstraction has 684 states and 837 transitions.
[2022-01-10 04:23:56,653 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 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 04:23:56,653 INFO  L276                IsEmpty]: Start isEmpty. Operand 684 states and 837 transitions.
[2022-01-10 04:23:56,655 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2022-01-10 04:23:56,655 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:23:56,656 INFO  L514         BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:56,679 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-01-10 04:23:56,865 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 04:23:56,866 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:23:56,867 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:23:56,867 INFO  L85        PathProgramCache]: Analyzing trace with hash 888630209, now seen corresponding path program 1 times
[2022-01-10 04:23:56,869 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:23:56,869 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56105540]
[2022-01-10 04:23:56,869 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:23:56,869 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:23:56,869 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:23:56,870 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 04:23:56,871 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 04:23:56,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:23:56,965 INFO  L263         TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-10 04:23:56,978 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:23:59,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:23:59,664 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 04:23:59,664 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 04:23:59,665 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56105540]
[2022-01-10 04:23:59,666 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [56105540] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 04:23:59,666 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 04:23:59,669 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 04:23:59,669 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282530342]
[2022-01-10 04:23:59,674 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 04:23:59,674 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 04:23:59,675 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 04:23:59,675 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 04:23:59,675 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-10 04:23:59,675 INFO  L87              Difference]: Start difference. First operand 684 states and 837 transitions. Second operand  has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 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 04:24:01,031 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 04:24:01,031 INFO  L93              Difference]: Finished difference Result 1711 states and 2262 transitions.
[2022-01-10 04:24:01,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 04:24:01,031 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 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 219
[2022-01-10 04:24:01,039 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 04:24:01,042 INFO  L225             Difference]: With dead ends: 1711
[2022-01-10 04:24:01,042 INFO  L226             Difference]: Without dead ends: 1097
[2022-01-10 04:24:01,043 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-01-10 04:24:01,043 INFO  L933         BasicCegarLoop]: 122 mSDtfsCounter, 273 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2022-01-10 04:24:01,044 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 166 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2022-01-10 04:24:01,045 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1097 states.
[2022-01-10 04:24:01,053 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1096.
[2022-01-10 04:24:01,054 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1096 states, 1095 states have (on average 1.2264840182648402) internal successors, (1343), 1095 states have internal predecessors, (1343), 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 04:24:01,056 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1343 transitions.
[2022-01-10 04:24:01,056 INFO  L78                 Accepts]: Start accepts. Automaton has 1096 states and 1343 transitions. Word has length 219
[2022-01-10 04:24:01,056 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 04:24:01,056 INFO  L470      AbstractCegarLoop]: Abstraction has 1096 states and 1343 transitions.
[2022-01-10 04:24:01,056 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 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 04:24:01,056 INFO  L276                IsEmpty]: Start isEmpty. Operand 1096 states and 1343 transitions.
[2022-01-10 04:24:01,058 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 285
[2022-01-10 04:24:01,059 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 04:24:01,059 INFO  L514         BasicCegarLoop]: 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:01,079 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 04:24:01,265 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 04:24:01,266 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 04:24:01,267 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 04:24:01,267 INFO  L85        PathProgramCache]: Analyzing trace with hash 13432839, now seen corresponding path program 1 times
[2022-01-10 04:24:01,269 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 04:24:01,269 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522342190]
[2022-01-10 04:24:01,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 04:24:01,269 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 04:24:01,269 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 04:24:01,270 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 04:24:01,272 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 04:24:01,375 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 04:24:01,377 INFO  L263         TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 30 conjunts are in the unsatisfiable core
[2022-01-10 04:24:01,382 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 04:24:18,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 95 backedges. 39 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 04:24:18,310 INFO  L328         TraceCheckSpWp]: Computing backward predicates...