/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:13:25,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:13:25,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:13:25,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 13:13:25,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:13:25,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:13:25,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:13:25,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:13:25,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:13:25,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:13:25,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:13:25,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:13:25,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:13:25,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:13:25,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:13:25,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:13:25,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:13:25,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:13:25,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:13:25,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:13:25,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:13:25,701 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:13:25,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:13:25,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:13:25,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:13:25,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:13:25,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:13:25,703 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:13:25,704 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:13:25,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:13:25,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:13:25,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:13:25,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:13:25,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:13:25,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:13:25,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:13:25,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:13:25,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:13:25,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:13:25,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:13:25,705 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:13:25,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:13:25,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:13:25,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:13:25,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:13:25,706 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:13:25,706 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:13:25,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:13:25,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:13:25,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:13:25,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:13:25,885 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:13:25,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-01-10 13:13:25,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c04b9d2/3c377a5d7118422a918be6874da9efd3/FLAGf47de1df9 [2022-01-10 13:13:26,291 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:13:26,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-01-10 13:13:26,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c04b9d2/3c377a5d7118422a918be6874da9efd3/FLAGf47de1df9 [2022-01-10 13:13:26,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c04b9d2/3c377a5d7118422a918be6874da9efd3 [2022-01-10 13:13:26,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:13:26,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:13:26,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:13:26,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:13:26,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:13:26,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:13:26" (1/1) ... [2022-01-10 13:13:26,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4044644e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:26, skipping insertion in model container [2022-01-10 13:13:26,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:13:26" (1/1) ... [2022-01-10 13:13:26,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:13:26,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:13:27,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[11714,11727] [2022-01-10 13:13:27,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:13:27,130 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:13:27,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[11714,11727] [2022-01-10 13:13:27,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:13:27,257 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:13:27,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27 WrapperNode [2022-01-10 13:13:27,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:13:27,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:13:27,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:13:27,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:13:27,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,329 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 946 [2022-01-10 13:13:27,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:13:27,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:13:27,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:13:27,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:13:27,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:13:27,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:13:27,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:13:27,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:13:27,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (1/1) ... [2022-01-10 13:13:27,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:13:27,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:13:27,443 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 13:13:27,484 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 13:13:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:13:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:13:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:13:27,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:13:27,631 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:13:27,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:13:28,325 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:13:28,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:13:28,339 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:13:28,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:13:28 BoogieIcfgContainer [2022-01-10 13:13:28,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:13:28,342 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:13:28,342 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:13:28,343 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:13:28,345 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:13:28" (1/1) ... [2022-01-10 13:13:28,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:13:28 BasicIcfg [2022-01-10 13:13:28,917 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:13:28,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:13:28,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:13:28,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:13:28,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:13:26" (1/4) ... [2022-01-10 13:13:28,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7518117c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:13:28, skipping insertion in model container [2022-01-10 13:13:28,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:13:27" (2/4) ... [2022-01-10 13:13:28,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7518117c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:13:28, skipping insertion in model container [2022-01-10 13:13:28,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:13:28" (3/4) ... [2022-01-10 13:13:28,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7518117c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:13:28, skipping insertion in model container [2022-01-10 13:13:28,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:13:28" (4/4) ... [2022-01-10 13:13:28,926 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.cTransformedIcfg [2022-01-10 13:13:28,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:13:28,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:13:28,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:13:28,982 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 13:13:28,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:13:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 255 states have (on average 1.6705882352941177) internal successors, (426), 256 states have internal predecessors, (426), 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 13:13:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 13:13:29,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:29,026 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] [2022-01-10 13:13:29,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1976306099, now seen corresponding path program 1 times [2022-01-10 13:13:29,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:29,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556510522] [2022-01-10 13:13:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:29,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:29,552 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 13:13:29,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:29,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556510522] [2022-01-10 13:13:29,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556510522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:29,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:29,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:29,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596405064] [2022-01-10 13:13:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:29,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:29,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:29,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:29,587 INFO L87 Difference]: Start difference. First operand has 257 states, 255 states have (on average 1.6705882352941177) internal successors, (426), 256 states have internal predecessors, (426), 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 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 13:13:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:29,681 INFO L93 Difference]: Finished difference Result 588 states and 954 transitions. [2022-01-10 13:13:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 13:13:29,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:29,702 INFO L225 Difference]: With dead ends: 588 [2022-01-10 13:13:29,702 INFO L226 Difference]: Without dead ends: 445 [2022-01-10 13:13:29,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:29,710 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 282 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:29,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 834 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:13:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-01-10 13:13:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 431. [2022-01-10 13:13:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6348837209302325) internal successors, (703), 430 states have internal predecessors, (703), 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 13:13:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 703 transitions. [2022-01-10 13:13:29,789 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 703 transitions. Word has length 91 [2022-01-10 13:13:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:29,790 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 703 transitions. [2022-01-10 13:13:29,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 13:13:29,790 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 703 transitions. [2022-01-10 13:13:29,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 13:13:29,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:29,795 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] [2022-01-10 13:13:29,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:13:29,795 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1546262885, now seen corresponding path program 1 times [2022-01-10 13:13:29,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:29,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842112105] [2022-01-10 13:13:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:29,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:29,989 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 13:13:29,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:29,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842112105] [2022-01-10 13:13:29,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842112105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:29,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:29,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:29,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896866940] [2022-01-10 13:13:29,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:29,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:29,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:29,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:29,996 INFO L87 Difference]: Start difference. First operand 431 states and 703 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 13:13:30,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:30,040 INFO L93 Difference]: Finished difference Result 1136 states and 1829 transitions. [2022-01-10 13:13:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:30,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-01-10 13:13:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:30,044 INFO L225 Difference]: With dead ends: 1136 [2022-01-10 13:13:30,044 INFO L226 Difference]: Without dead ends: 772 [2022-01-10 13:13:30,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:30,051 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 345 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:30,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 864 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:13:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-01-10 13:13:30,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 770. [2022-01-10 13:13:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.611183355006502) internal successors, (1239), 769 states have internal predecessors, (1239), 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 13:13:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1239 transitions. [2022-01-10 13:13:30,078 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1239 transitions. Word has length 92 [2022-01-10 13:13:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:30,080 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1239 transitions. [2022-01-10 13:13:30,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 13:13:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1239 transitions. [2022-01-10 13:13:30,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 13:13:30,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:30,084 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] [2022-01-10 13:13:30,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:13:30,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:30,091 INFO L85 PathProgramCache]: Analyzing trace with hash -204559442, now seen corresponding path program 1 times [2022-01-10 13:13:30,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:30,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658586158] [2022-01-10 13:13:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:30,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:30,269 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 13:13:30,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:30,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658586158] [2022-01-10 13:13:30,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658586158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:30,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:30,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:30,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342596223] [2022-01-10 13:13:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:30,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:30,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:30,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:30,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:30,271 INFO L87 Difference]: Start difference. First operand 770 states and 1239 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 13:13:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:30,315 INFO L93 Difference]: Finished difference Result 1927 states and 3080 transitions. [2022-01-10 13:13:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:30,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 13:13:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:30,321 INFO L225 Difference]: With dead ends: 1927 [2022-01-10 13:13:30,321 INFO L226 Difference]: Without dead ends: 1373 [2022-01-10 13:13:30,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:30,324 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 328 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:30,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 880 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:13:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-01-10 13:13:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1371. [2022-01-10 13:13:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 1.5934306569343066) internal successors, (2183), 1370 states have internal predecessors, (2183), 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 13:13:30,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2183 transitions. [2022-01-10 13:13:30,350 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2183 transitions. Word has length 93 [2022-01-10 13:13:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:30,351 INFO L470 AbstractCegarLoop]: Abstraction has 1371 states and 2183 transitions. [2022-01-10 13:13:30,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 13:13:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2183 transitions. [2022-01-10 13:13:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 13:13:30,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:30,356 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] [2022-01-10 13:13:30,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:13:30,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash -294727139, now seen corresponding path program 1 times [2022-01-10 13:13:30,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:30,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024025082] [2022-01-10 13:13:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:30,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:30,463 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 13:13:30,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:30,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024025082] [2022-01-10 13:13:30,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024025082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:30,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:30,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:30,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142862808] [2022-01-10 13:13:30,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:30,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:30,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:30,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:30,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:30,465 INFO L87 Difference]: Start difference. First operand 1371 states and 2183 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 13:13:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:30,557 INFO L93 Difference]: Finished difference Result 3312 states and 5258 transitions. [2022-01-10 13:13:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:30,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2022-01-10 13:13:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:30,568 INFO L225 Difference]: With dead ends: 3312 [2022-01-10 13:13:30,569 INFO L226 Difference]: Without dead ends: 2414 [2022-01-10 13:13:30,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:30,577 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 311 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:30,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 896 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:13:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2022-01-10 13:13:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2412. [2022-01-10 13:13:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2411 states have (on average 1.5790128577353795) internal successors, (3807), 2411 states have internal predecessors, (3807), 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 13:13:30,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3807 transitions. [2022-01-10 13:13:30,671 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3807 transitions. Word has length 94 [2022-01-10 13:13:30,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:30,672 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3807 transitions. [2022-01-10 13:13:30,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 13:13:30,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3807 transitions. [2022-01-10 13:13:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 13:13:30,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:30,678 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] [2022-01-10 13:13:30,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:13:30,678 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash 345613232, now seen corresponding path program 1 times [2022-01-10 13:13:30,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:30,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71583209] [2022-01-10 13:13:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:30,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:30,820 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 13:13:30,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:30,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71583209] [2022-01-10 13:13:30,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71583209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:30,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:30,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:30,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429902078] [2022-01-10 13:13:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:30,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:30,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:30,822 INFO L87 Difference]: Start difference. First operand 2412 states and 3807 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 13:13:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:30,917 INFO L93 Difference]: Finished difference Result 5673 states and 8942 transitions. [2022-01-10 13:13:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:30,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2022-01-10 13:13:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:30,930 INFO L225 Difference]: With dead ends: 5673 [2022-01-10 13:13:30,930 INFO L226 Difference]: Without dead ends: 4179 [2022-01-10 13:13:30,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:30,933 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 294 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:30,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 912 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:13:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2022-01-10 13:13:31,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 4177. [2022-01-10 13:13:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 4176 states have (on average 1.5648946360153257) internal successors, (6535), 4176 states have internal predecessors, (6535), 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 13:13:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 6535 transitions. [2022-01-10 13:13:31,048 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 6535 transitions. Word has length 95 [2022-01-10 13:13:31,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:31,049 INFO L470 AbstractCegarLoop]: Abstraction has 4177 states and 6535 transitions. [2022-01-10 13:13:31,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 13:13:31,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 6535 transitions. [2022-01-10 13:13:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 13:13:31,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:31,064 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] [2022-01-10 13:13:31,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:13:31,065 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1980919905, now seen corresponding path program 1 times [2022-01-10 13:13:31,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:31,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52883272] [2022-01-10 13:13:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:31,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:31,238 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 13:13:31,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:31,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52883272] [2022-01-10 13:13:31,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52883272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:31,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:31,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:31,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833762995] [2022-01-10 13:13:31,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:31,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:31,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:31,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:31,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:31,240 INFO L87 Difference]: Start difference. First operand 4177 states and 6535 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 13:13:31,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:31,355 INFO L93 Difference]: Finished difference Result 9574 states and 14958 transitions. [2022-01-10 13:13:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:31,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2022-01-10 13:13:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:31,378 INFO L225 Difference]: With dead ends: 9574 [2022-01-10 13:13:31,378 INFO L226 Difference]: Without dead ends: 7092 [2022-01-10 13:13:31,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:31,387 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 277 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:31,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 928 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:13:31,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7092 states. [2022-01-10 13:13:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7092 to 7090. [2022-01-10 13:13:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 1.5481732261249823) internal successors, (10975), 7089 states have internal predecessors, (10975), 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 13:13:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 10975 transitions. [2022-01-10 13:13:31,628 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 10975 transitions. Word has length 96 [2022-01-10 13:13:31,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:31,629 INFO L470 AbstractCegarLoop]: Abstraction has 7090 states and 10975 transitions. [2022-01-10 13:13:31,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 13:13:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 10975 transitions. [2022-01-10 13:13:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 13:13:31,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:31,645 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] [2022-01-10 13:13:31,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:13:31,646 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:31,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash 116559282, now seen corresponding path program 1 times [2022-01-10 13:13:31,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:31,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801219309] [2022-01-10 13:13:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:31,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:31,787 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 13:13:31,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:31,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801219309] [2022-01-10 13:13:31,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801219309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:31,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:31,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:13:31,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828900483] [2022-01-10 13:13:31,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:31,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:13:31,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:31,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:13:31,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:13:31,789 INFO L87 Difference]: Start difference. First operand 7090 states and 10975 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 13:13:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:31,965 INFO L93 Difference]: Finished difference Result 11205 states and 17393 transitions. [2022-01-10 13:13:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:13:31,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2022-01-10 13:13:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:32,022 INFO L225 Difference]: With dead ends: 11205 [2022-01-10 13:13:32,022 INFO L226 Difference]: Without dead ends: 4157 [2022-01-10 13:13:32,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:13:32,030 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 297 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:32,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 797 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:13:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2022-01-10 13:13:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 4157. [2022-01-10 13:13:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4157 states, 4156 states have (on average 1.5543792107795957) internal successors, (6460), 4156 states have internal predecessors, (6460), 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 13:13:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 6460 transitions. [2022-01-10 13:13:32,163 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 6460 transitions. Word has length 97 [2022-01-10 13:13:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:32,164 INFO L470 AbstractCegarLoop]: Abstraction has 4157 states and 6460 transitions. [2022-01-10 13:13:32,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 13:13:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 6460 transitions. [2022-01-10 13:13:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 13:13:32,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:32,172 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] [2022-01-10 13:13:32,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:13:32,172 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:32,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash -406181922, now seen corresponding path program 1 times [2022-01-10 13:13:32,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:32,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077662090] [2022-01-10 13:13:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:32,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:32,345 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 13:13:32,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:32,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077662090] [2022-01-10 13:13:32,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077662090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:32,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:32,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:32,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151776003] [2022-01-10 13:13:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:32,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:32,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:32,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:32,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:32,346 INFO L87 Difference]: Start difference. First operand 4157 states and 6460 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 13:13:34,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:13:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:34,685 INFO L93 Difference]: Finished difference Result 8231 states and 12820 transitions. [2022-01-10 13:13:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:34,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 141 [2022-01-10 13:13:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:34,715 INFO L225 Difference]: With dead ends: 8231 [2022-01-10 13:13:34,716 INFO L226 Difference]: Without dead ends: 4158 [2022-01-10 13:13:34,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:34,722 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 26 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:34,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 601 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 13:13:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-01-10 13:13:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4157. [2022-01-10 13:13:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4157 states, 4156 states have (on average 1.5534167468719924) internal successors, (6456), 4156 states have internal predecessors, (6456), 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 13:13:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 6456 transitions. [2022-01-10 13:13:34,890 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 6456 transitions. Word has length 141 [2022-01-10 13:13:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:34,891 INFO L470 AbstractCegarLoop]: Abstraction has 4157 states and 6456 transitions. [2022-01-10 13:13:34,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 13:13:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 6456 transitions. [2022-01-10 13:13:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 13:13:34,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:34,898 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] [2022-01-10 13:13:34,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:13:34,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash -614880225, now seen corresponding path program 1 times [2022-01-10 13:13:34,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:34,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609265223] [2022-01-10 13:13:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:34,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:35,203 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 13:13:35,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609265223] [2022-01-10 13:13:35,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609265223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:35,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:35,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:35,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845053852] [2022-01-10 13:13:35,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:35,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:35,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:35,204 INFO L87 Difference]: Start difference. First operand 4157 states and 6456 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 13:13:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:36,132 INFO L93 Difference]: Finished difference Result 11661 states and 18124 transitions. [2022-01-10 13:13:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 141 [2022-01-10 13:13:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:36,147 INFO L225 Difference]: With dead ends: 11661 [2022-01-10 13:13:36,147 INFO L226 Difference]: Without dead ends: 8217 [2022-01-10 13:13:36,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:36,153 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 202 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:36,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 428 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 13:13:36,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8217 states. [2022-01-10 13:13:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8217 to 8215. [2022-01-10 13:13:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8215 states, 8214 states have (on average 1.5505234964694423) internal successors, (12736), 8214 states have internal predecessors, (12736), 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 13:13:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8215 states to 8215 states and 12736 transitions. [2022-01-10 13:13:36,486 INFO L78 Accepts]: Start accepts. Automaton has 8215 states and 12736 transitions. Word has length 141 [2022-01-10 13:13:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:36,486 INFO L470 AbstractCegarLoop]: Abstraction has 8215 states and 12736 transitions. [2022-01-10 13:13:36,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 13:13:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 8215 states and 12736 transitions. [2022-01-10 13:13:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 13:13:36,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:36,500 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] [2022-01-10 13:13:36,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:13:36,501 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:36,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1053611264, now seen corresponding path program 1 times [2022-01-10 13:13:36,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:36,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976085941] [2022-01-10 13:13:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:36,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:36,707 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 13:13:36,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:36,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976085941] [2022-01-10 13:13:36,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976085941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:36,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:36,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:36,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644144520] [2022-01-10 13:13:36,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:36,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:36,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:36,709 INFO L87 Difference]: Start difference. First operand 8215 states and 12736 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 13:13:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:38,064 INFO L93 Difference]: Finished difference Result 23009 states and 35640 transitions. [2022-01-10 13:13:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:38,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 141 [2022-01-10 13:13:38,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:38,094 INFO L225 Difference]: With dead ends: 23009 [2022-01-10 13:13:38,094 INFO L226 Difference]: Without dead ends: 16239 [2022-01-10 13:13:38,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:38,105 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 186 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:38,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 438 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 13:13:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16239 states. [2022-01-10 13:13:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16239 to 16237. [2022-01-10 13:13:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16237 states, 16236 states have (on average 1.5455777285045578) internal successors, (25094), 16236 states have internal predecessors, (25094), 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 13:13:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16237 states to 16237 states and 25094 transitions. [2022-01-10 13:13:39,155 INFO L78 Accepts]: Start accepts. Automaton has 16237 states and 25094 transitions. Word has length 141 [2022-01-10 13:13:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:39,156 INFO L470 AbstractCegarLoop]: Abstraction has 16237 states and 25094 transitions. [2022-01-10 13:13:39,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 13:13:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 16237 states and 25094 transitions. [2022-01-10 13:13:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 13:13:39,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:39,183 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] [2022-01-10 13:13:39,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:13:39,183 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:39,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1531808991, now seen corresponding path program 1 times [2022-01-10 13:13:39,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:39,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542292507] [2022-01-10 13:13:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:39,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:39,391 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 13:13:39,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:39,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542292507] [2022-01-10 13:13:39,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542292507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:39,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:39,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:13:39,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038101414] [2022-01-10 13:13:39,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:39,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:13:39,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:13:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:13:39,393 INFO L87 Difference]: Start difference. First operand 16237 states and 25094 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 13:13:41,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:13:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:13:43,657 INFO L93 Difference]: Finished difference Result 44813 states and 68996 transitions. [2022-01-10 13:13:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:13:43,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 141 [2022-01-10 13:13:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:13:43,725 INFO L225 Difference]: With dead ends: 44813 [2022-01-10 13:13:43,725 INFO L226 Difference]: Without dead ends: 32011 [2022-01-10 13:13:43,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:13:43,741 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 170 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 13:13:43,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 448 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 226 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 13:13:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32011 states. [2022-01-10 13:13:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32011 to 32009. [2022-01-10 13:13:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32009 states, 32008 states have (on average 1.5356785803549113) internal successors, (49154), 32008 states have internal predecessors, (49154), 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 13:13:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32009 states to 32009 states and 49154 transitions. [2022-01-10 13:13:45,841 INFO L78 Accepts]: Start accepts. Automaton has 32009 states and 49154 transitions. Word has length 141 [2022-01-10 13:13:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:13:45,841 INFO L470 AbstractCegarLoop]: Abstraction has 32009 states and 49154 transitions. [2022-01-10 13:13:45,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 13:13:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 32009 states and 49154 transitions. [2022-01-10 13:13:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 13:13:45,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:13:45,896 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] [2022-01-10 13:13:45,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:13:45,896 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:13:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:13:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1986008706, now seen corresponding path program 1 times [2022-01-10 13:13:45,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:13:45,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800235013] [2022-01-10 13:13:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:13:45,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:13:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:13:46,448 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 13:13:46,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:13:46,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800235013] [2022-01-10 13:13:46,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800235013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:13:46,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:13:46,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:13:46,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113969663] [2022-01-10 13:13:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:13:46,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:13:46,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:13:46,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:13:46,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:13:46,450 INFO L87 Difference]: Start difference. First operand 32009 states and 49154 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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 13:13:48,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:13:54,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:14:02,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:14:02,018 INFO L93 Difference]: Finished difference Result 82395 states and 125677 transitions. [2022-01-10 13:14:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 13:14:02,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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 141 [2022-01-10 13:14:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:14:02,225 INFO L225 Difference]: With dead ends: 82395 [2022-01-10 13:14:02,225 INFO L226 Difference]: Without dead ends: 53689 [2022-01-10 13:14:02,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-10 13:14:02,257 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 3052 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 25 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-01-10 13:14:02,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3052 Valid, 1222 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 762 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-01-10 13:14:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53689 states. [2022-01-10 13:14:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53689 to 33611. [2022-01-10 13:14:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33611 states, 33610 states have (on average 1.5268670038678964) internal successors, (51318), 33610 states have internal predecessors, (51318), 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 13:14:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33611 states to 33611 states and 51318 transitions. [2022-01-10 13:14:07,922 INFO L78 Accepts]: Start accepts. Automaton has 33611 states and 51318 transitions. Word has length 141 [2022-01-10 13:14:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:14:07,922 INFO L470 AbstractCegarLoop]: Abstraction has 33611 states and 51318 transitions. [2022-01-10 13:14:07,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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 13:14:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33611 states and 51318 transitions. [2022-01-10 13:14:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 13:14:07,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:14:07,970 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] [2022-01-10 13:14:07,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:14:07,970 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:14:07,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:14:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1947883170, now seen corresponding path program 1 times [2022-01-10 13:14:07,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:14:07,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153541461] [2022-01-10 13:14:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:14:07,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:14:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:14:08,372 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 13:14:08,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:14:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153541461] [2022-01-10 13:14:08,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153541461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:14:08,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:14:08,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 13:14:08,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963526051] [2022-01-10 13:14:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:14:08,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 13:14:08,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:14:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 13:14:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:14:08,374 INFO L87 Difference]: Start difference. First operand 33611 states and 51318 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 13:14:11,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:14:18,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:14:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:14:30,931 INFO L93 Difference]: Finished difference Result 79613 states and 120769 transitions. [2022-01-10 13:14:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 13:14:30,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 141 [2022-01-10 13:14:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:14:31,054 INFO L225 Difference]: With dead ends: 79613 [2022-01-10 13:14:31,055 INFO L226 Difference]: Without dead ends: 51609 [2022-01-10 13:14:31,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 13:14:31,086 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2878 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2878 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:14:31,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2878 Valid, 1259 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 694 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2022-01-10 13:14:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51609 states.