/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/combinations/Problem05_label41+token_ring.02.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:33:45,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:33:45,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:33:45,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 13:33:45,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:33:45,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:33:45,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:33:45,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:33:45,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:33:45,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:33:45,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:33:45,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:33:45,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:33:45,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:33:45,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:33:45,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:33:45,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:33:45,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:33:45,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:33:45,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:33:45,765 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 13:33:45,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:33:45,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:33:45,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:33:45,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:33:45,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:33:45,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:33:45,780 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:33:45,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:33:45,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:33:45,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:33:45,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:33:45,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:33:45,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:33:45,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:33:45,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:33:45,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:33:45,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:33:45,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:33:45,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:33:45,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:33:45,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:33:45,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:33:45,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:33:45,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:33:45,783 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:33:45,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:33:45,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:33:45,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:33:45,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:33:45,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:33:45,973 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:33:45,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c [2022-01-10 13:33:46,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2117824/5964d0d72cdc4a1bad789ccb7ab04bca/FLAGf16a022eb [2022-01-10 13:33:46,696 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:33:46,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c [2022-01-10 13:33:46,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2117824/5964d0d72cdc4a1bad789ccb7ab04bca/FLAGf16a022eb [2022-01-10 13:33:47,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2117824/5964d0d72cdc4a1bad789ccb7ab04bca [2022-01-10 13:33:47,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:33:47,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:33:47,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:33:47,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:33:47,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:33:47,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:33:47" (1/1) ... [2022-01-10 13:33:47,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e53a8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:47, skipping insertion in model container [2022-01-10 13:33:47,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:33:47" (1/1) ... [2022-01-10 13:33:47,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:33:47,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:33:48,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c[376251,376264] [2022-01-10 13:33:48,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c[383339,383352] [2022-01-10 13:33:48,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:33:48,557 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:33:49,150 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c[376251,376264] [2022-01-10 13:33:49,159 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.02.cil-1.c[383339,383352] [2022-01-10 13:33:49,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:33:49,216 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:33:49,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49 WrapperNode [2022-01-10 13:33:49,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:33:49,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:33:49,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:33:49,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:33:49,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,552 INFO L137 Inliner]: procedures = 49, calls = 47, calls flagged for inlining = 42, calls inlined = 59, statements flattened = 12929 [2022-01-10 13:33:49,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:33:49,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:33:49,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:33:49,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:33:49,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:33:49,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:33:49,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:33:49,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:33:49,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (1/1) ... [2022-01-10 13:33:49,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:33:49,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:33:49,957 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 13:33:49,963 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 13:33:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:33:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:33:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:33:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:33:50,079 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:33:50,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:33:57,093 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:33:57,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:33:57,117 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-10 13:33:57,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:57 BoogieIcfgContainer [2022-01-10 13:33:57,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:33:57,122 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:33:57,122 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:33:57,123 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:33:57,125 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:57" (1/1) ... [2022-01-10 13:33:58,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:33:58 BasicIcfg [2022-01-10 13:33:58,276 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:33:58,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:33:58,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:33:58,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:33:58,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:33:47" (1/4) ... [2022-01-10 13:33:58,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b927aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:33:58, skipping insertion in model container [2022-01-10 13:33:58,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:33:49" (2/4) ... [2022-01-10 13:33:58,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b927aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:33:58, skipping insertion in model container [2022-01-10 13:33:58,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:57" (3/4) ... [2022-01-10 13:33:58,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b927aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:33:58, skipping insertion in model container [2022-01-10 13:33:58,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:33:58" (4/4) ... [2022-01-10 13:33:58,283 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.02.cil-1.cTransformedIcfg [2022-01-10 13:33:58,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:33:58,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:33:58,332 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:33:58,337 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 13:33:58,338 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:33:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2412 states have (on average 1.8399668325041458) internal successors, (4438), 2414 states have internal predecessors, (4438), 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 13:33:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:33:58,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:58,388 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] [2022-01-10 13:33:58,389 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1494916703, now seen corresponding path program 1 times [2022-01-10 13:33:58,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:58,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090708758] [2022-01-10 13:33:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:58,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:58,681 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 13:33:58,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:58,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090708758] [2022-01-10 13:33:58,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090708758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:58,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:58,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:58,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757660520] [2022-01-10 13:33:58,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:58,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:58,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:58,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:58,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:58,722 INFO L87 Difference]: Start difference. First operand has 2415 states, 2412 states have (on average 1.8399668325041458) internal successors, (4438), 2414 states have internal predecessors, (4438), 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 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:59,035 INFO L93 Difference]: Finished difference Result 4985 states and 9114 transitions. [2022-01-10 13:33:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:59,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2022-01-10 13:33:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:59,077 INFO L225 Difference]: With dead ends: 4985 [2022-01-10 13:33:59,077 INFO L226 Difference]: Without dead ends: 2509 [2022-01-10 13:33:59,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:33:59,086 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 4316 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:59,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 4626 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:33:59,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2022-01-10 13:33:59,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2507. [2022-01-10 13:33:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2505 states have (on average 1.8079840319361278) internal successors, (4529), 2506 states have internal predecessors, (4529), 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 13:33:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4529 transitions. [2022-01-10 13:33:59,183 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4529 transitions. Word has length 55 [2022-01-10 13:33:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:59,184 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 4529 transitions. [2022-01-10 13:33:59,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4529 transitions. [2022-01-10 13:33:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:33:59,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:59,190 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] [2022-01-10 13:33:59,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:33:59,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:59,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash 522920319, now seen corresponding path program 1 times [2022-01-10 13:33:59,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:59,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170525316] [2022-01-10 13:33:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:59,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:59,279 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 13:33:59,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:59,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170525316] [2022-01-10 13:33:59,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170525316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:59,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:59,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:59,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765945169] [2022-01-10 13:33:59,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:59,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:59,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:59,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:59,286 INFO L87 Difference]: Start difference. First operand 2507 states and 4529 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:59,343 INFO L93 Difference]: Finished difference Result 2883 states and 5086 transitions. [2022-01-10 13:33:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:59,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2022-01-10 13:33:59,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:59,352 INFO L225 Difference]: With dead ends: 2883 [2022-01-10 13:33:59,353 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 13:33:59,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:33:59,355 INFO L933 BasicCegarLoop]: 4284 mSDtfsCounter, 4279 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4279 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:59,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4279 Valid, 4284 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 13:33:59,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 13:33:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2505 states have (on average 1.8047904191616766) internal successors, (4521), 2506 states have internal predecessors, (4521), 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 13:33:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4521 transitions. [2022-01-10 13:33:59,404 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4521 transitions. Word has length 55 [2022-01-10 13:33:59,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:59,404 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 4521 transitions. [2022-01-10 13:33:59,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4521 transitions. [2022-01-10 13:33:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:33:59,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:59,410 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] [2022-01-10 13:33:59,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:33:59,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1586644385, now seen corresponding path program 1 times [2022-01-10 13:33:59,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:59,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575680401] [2022-01-10 13:33:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:59,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:59,469 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 13:33:59,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:59,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575680401] [2022-01-10 13:33:59,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575680401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:59,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:59,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:59,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938461150] [2022-01-10 13:33:59,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:59,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:59,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:59,471 INFO L87 Difference]: Start difference. First operand 2507 states and 4521 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:59,513 INFO L93 Difference]: Finished difference Result 2882 states and 5069 transitions. [2022-01-10 13:33:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:59,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2022-01-10 13:33:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:59,521 INFO L225 Difference]: With dead ends: 2882 [2022-01-10 13:33:59,521 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 13:33:59,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:33:59,527 INFO L933 BasicCegarLoop]: 4279 mSDtfsCounter, 4273 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4273 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:59,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4273 Valid, 4279 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 13:33:59,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 13:33:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2505 states have (on average 1.8015968063872256) internal successors, (4513), 2506 states have internal predecessors, (4513), 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 13:33:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4513 transitions. [2022-01-10 13:33:59,571 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4513 transitions. Word has length 55 [2022-01-10 13:33:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:59,571 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 4513 transitions. [2022-01-10 13:33:59,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4513 transitions. [2022-01-10 13:33:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:33:59,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:59,573 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] [2022-01-10 13:33:59,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:33:59,573 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash 839157119, now seen corresponding path program 1 times [2022-01-10 13:33:59,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:59,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893793709] [2022-01-10 13:33:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:59,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:59,627 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 13:33:59,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:59,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893793709] [2022-01-10 13:33:59,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893793709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:59,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:59,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:59,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280395023] [2022-01-10 13:33:59,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:59,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:59,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:59,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:59,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:59,629 INFO L87 Difference]: Start difference. First operand 2507 states and 4513 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:59,687 INFO L93 Difference]: Finished difference Result 2881 states and 5052 transitions. [2022-01-10 13:33:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:59,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2022-01-10 13:33:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:59,696 INFO L225 Difference]: With dead ends: 2881 [2022-01-10 13:33:59,696 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 13:33:59,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:33:59,703 INFO L933 BasicCegarLoop]: 4264 mSDtfsCounter, 4230 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:59,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4230 Valid, 4292 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 13:33:59,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 13:33:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2505 states have (on average 1.7952095808383233) internal successors, (4497), 2506 states have internal predecessors, (4497), 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 13:33:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4497 transitions. [2022-01-10 13:33:59,757 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4497 transitions. Word has length 55 [2022-01-10 13:33:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:59,759 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 4497 transitions. [2022-01-10 13:33:59,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4497 transitions. [2022-01-10 13:33:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:33:59,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:59,760 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] [2022-01-10 13:33:59,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:33:59,761 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:59,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1736312542, now seen corresponding path program 1 times [2022-01-10 13:33:59,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:59,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842698169] [2022-01-10 13:33:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:59,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:59,811 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 13:33:59,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:59,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842698169] [2022-01-10 13:33:59,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842698169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:59,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:59,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:59,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036119838] [2022-01-10 13:33:59,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:59,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:59,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:59,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:59,815 INFO L87 Difference]: Start difference. First operand 2507 states and 4497 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:59,883 INFO L93 Difference]: Finished difference Result 2880 states and 5019 transitions. [2022-01-10 13:33:59,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:59,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2022-01-10 13:33:59,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:59,894 INFO L225 Difference]: With dead ends: 2880 [2022-01-10 13:33:59,895 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 13:33:59,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:33:59,897 INFO L933 BasicCegarLoop]: 4254 mSDtfsCounter, 4220 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:59,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 4281 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 13:33:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 13:33:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2505 states have (on average 1.7888223552894211) internal successors, (4481), 2506 states have internal predecessors, (4481), 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 13:33:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4481 transitions. [2022-01-10 13:33:59,963 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4481 transitions. Word has length 55 [2022-01-10 13:33:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:59,966 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 4481 transitions. [2022-01-10 13:33:59,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:33:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4481 transitions. [2022-01-10 13:33:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:33:59,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:59,969 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] [2022-01-10 13:33:59,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:33:59,969 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -48531524, now seen corresponding path program 1 times [2022-01-10 13:33:59,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:59,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012772449] [2022-01-10 13:33:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:59,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:00,013 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 13:34:00,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012772449] [2022-01-10 13:34:00,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012772449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:00,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:00,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:00,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945072624] [2022-01-10 13:34:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:00,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:00,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:00,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:00,015 INFO L87 Difference]: Start difference. First operand 2507 states and 4481 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:34:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:00,068 INFO L93 Difference]: Finished difference Result 2879 states and 4986 transitions. [2022-01-10 13:34:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:00,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2022-01-10 13:34:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:00,076 INFO L225 Difference]: With dead ends: 2879 [2022-01-10 13:34:00,076 INFO L226 Difference]: Without dead ends: 2507 [2022-01-10 13:34:00,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:34:00,078 INFO L933 BasicCegarLoop]: 4244 mSDtfsCounter, 4210 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4210 SdHoareTripleChecker+Valid, 4270 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:00,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4210 Valid, 4270 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-01-10 13:34:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2507. [2022-01-10 13:34:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2505 states have (on average 1.782435129740519) internal successors, (4465), 2506 states have internal predecessors, (4465), 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 13:34:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4465 transitions. [2022-01-10 13:34:00,127 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4465 transitions. Word has length 55 [2022-01-10 13:34:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:00,127 INFO L470 AbstractCegarLoop]: Abstraction has 2507 states and 4465 transitions. [2022-01-10 13:34:00,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:34:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4465 transitions. [2022-01-10 13:34:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:34:00,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:00,128 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] [2022-01-10 13:34:00,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:34:00,128 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1471072357, now seen corresponding path program 1 times [2022-01-10 13:34:00,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:00,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024028271] [2022-01-10 13:34:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:00,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:00,191 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 13:34:00,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:00,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024028271] [2022-01-10 13:34:00,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024028271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:00,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:00,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:34:00,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691713180] [2022-01-10 13:34:00,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:00,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:34:00,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:34:00,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:34:00,193 INFO L87 Difference]: Start difference. First operand 2507 states and 4465 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 13:34:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:00,401 INFO L93 Difference]: Finished difference Result 3131 states and 5299 transitions. [2022-01-10 13:34:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:34:00,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2022-01-10 13:34:00,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:00,410 INFO L225 Difference]: With dead ends: 3131 [2022-01-10 13:34:00,410 INFO L226 Difference]: Without dead ends: 2773 [2022-01-10 13:34:00,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:34:00,413 INFO L933 BasicCegarLoop]: 4258 mSDtfsCounter, 689 mSDsluCounter, 12489 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 16747 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:00,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 16747 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2022-01-10 13:34:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2513. [2022-01-10 13:34:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2511 states have (on average 1.7773795300677022) internal successors, (4463), 2512 states have internal predecessors, (4463), 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 13:34:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4463 transitions. [2022-01-10 13:34:00,491 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4463 transitions. Word has length 55 [2022-01-10 13:34:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:00,491 INFO L470 AbstractCegarLoop]: Abstraction has 2513 states and 4463 transitions. [2022-01-10 13:34:00,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 13:34:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4463 transitions. [2022-01-10 13:34:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:34:00,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:00,492 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] [2022-01-10 13:34:00,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:34:00,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash -777970660, now seen corresponding path program 1 times [2022-01-10 13:34:00,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:00,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363637681] [2022-01-10 13:34:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:00,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:00,542 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 13:34:00,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:00,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363637681] [2022-01-10 13:34:00,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363637681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:00,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:00,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:00,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14804432] [2022-01-10 13:34:00,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:00,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:00,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:00,544 INFO L87 Difference]: Start difference. First operand 2513 states and 4463 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:34:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:00,619 INFO L93 Difference]: Finished difference Result 3220 states and 5379 transitions. [2022-01-10 13:34:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:00,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2022-01-10 13:34:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:00,630 INFO L225 Difference]: With dead ends: 3220 [2022-01-10 13:34:00,631 INFO L226 Difference]: Without dead ends: 2844 [2022-01-10 13:34:00,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:34:00,633 INFO L933 BasicCegarLoop]: 4240 mSDtfsCounter, 4177 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 4465 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:00,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4177 Valid, 4465 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2022-01-10 13:34:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2798. [2022-01-10 13:34:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2796 states have (on average 1.7253218884120172) internal successors, (4824), 2797 states have internal predecessors, (4824), 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 13:34:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4824 transitions. [2022-01-10 13:34:00,701 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4824 transitions. Word has length 55 [2022-01-10 13:34:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:00,701 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4824 transitions. [2022-01-10 13:34:00,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 13:34:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4824 transitions. [2022-01-10 13:34:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:34:00,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:00,702 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:00,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:34:00,703 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash 704493796, now seen corresponding path program 1 times [2022-01-10 13:34:00,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:00,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20408463] [2022-01-10 13:34:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:00,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:00,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:00,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20408463] [2022-01-10 13:34:00,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20408463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:00,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:00,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:00,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64401617] [2022-01-10 13:34:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:00,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:00,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:00,744 INFO L87 Difference]: Start difference. First operand 2798 states and 4824 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 13:34:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:00,848 INFO L93 Difference]: Finished difference Result 4027 states and 6405 transitions. [2022-01-10 13:34:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:00,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2022-01-10 13:34:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:00,869 INFO L225 Difference]: With dead ends: 4027 [2022-01-10 13:34:00,869 INFO L226 Difference]: Without dead ends: 3372 [2022-01-10 13:34:00,871 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 13:34:00,872 INFO L933 BasicCegarLoop]: 4237 mSDtfsCounter, 4180 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4180 SdHoareTripleChecker+Valid, 4462 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:00,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4180 Valid, 4462 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2022-01-10 13:34:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3310. [2022-01-10 13:34:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 3308 states have (on average 1.6553808948004838) internal successors, (5476), 3309 states have internal predecessors, (5476), 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 13:34:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 5476 transitions. [2022-01-10 13:34:00,960 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 5476 transitions. Word has length 88 [2022-01-10 13:34:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:00,961 INFO L470 AbstractCegarLoop]: Abstraction has 3310 states and 5476 transitions. [2022-01-10 13:34:00,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 13:34:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 5476 transitions. [2022-01-10 13:34:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:34:00,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:00,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:00,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:34:00,962 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:00,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1988988764, now seen corresponding path program 1 times [2022-01-10 13:34:00,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:00,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771784860] [2022-01-10 13:34:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:00,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:01,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771784860] [2022-01-10 13:34:01,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771784860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:01,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:01,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:01,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821572630] [2022-01-10 13:34:01,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:01,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:01,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:01,015 INFO L87 Difference]: Start difference. First operand 3310 states and 5476 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 13:34:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:01,143 INFO L93 Difference]: Finished difference Result 5491 states and 8241 transitions. [2022-01-10 13:34:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:01,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2022-01-10 13:34:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:01,153 INFO L225 Difference]: With dead ends: 5491 [2022-01-10 13:34:01,153 INFO L226 Difference]: Without dead ends: 4343 [2022-01-10 13:34:01,156 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 13:34:01,157 INFO L933 BasicCegarLoop]: 4301 mSDtfsCounter, 4127 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4127 SdHoareTripleChecker+Valid, 4568 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 13:34:01,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4127 Valid, 4568 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:01,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2022-01-10 13:34:01,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 4341. [2022-01-10 13:34:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4341 states, 4339 states have (on average 1.552661903664439) internal successors, (6737), 4340 states have internal predecessors, (6737), 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 13:34:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 6737 transitions. [2022-01-10 13:34:01,363 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 6737 transitions. Word has length 88 [2022-01-10 13:34:01,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:01,364 INFO L470 AbstractCegarLoop]: Abstraction has 4341 states and 6737 transitions. [2022-01-10 13:34:01,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 13:34:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 6737 transitions. [2022-01-10 13:34:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:34:01,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:01,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:01,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:34:01,366 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:01,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1205609789, now seen corresponding path program 1 times [2022-01-10 13:34:01,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:01,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930690766] [2022-01-10 13:34:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:01,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:34:01,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:01,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930690766] [2022-01-10 13:34:01,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930690766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:01,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:01,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:01,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669463833] [2022-01-10 13:34:01,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:01,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:01,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:01,389 INFO L87 Difference]: Start difference. First operand 4341 states and 6737 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 13:34:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:01,507 INFO L93 Difference]: Finished difference Result 6485 states and 9430 transitions. [2022-01-10 13:34:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:01,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 88 [2022-01-10 13:34:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:01,515 INFO L225 Difference]: With dead ends: 6485 [2022-01-10 13:34:01,515 INFO L226 Difference]: Without dead ends: 4306 [2022-01-10 13:34:01,519 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 13:34:01,520 INFO L933 BasicCegarLoop]: 4243 mSDtfsCounter, 281 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:01,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 8201 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2022-01-10 13:34:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 4306. [2022-01-10 13:34:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4304 states have (on average 1.5559944237918215) internal successors, (6697), 4305 states have internal predecessors, (6697), 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 13:34:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 6697 transitions. [2022-01-10 13:34:01,661 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 6697 transitions. Word has length 88 [2022-01-10 13:34:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:01,662 INFO L470 AbstractCegarLoop]: Abstraction has 4306 states and 6697 transitions. [2022-01-10 13:34:01,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 13:34:01,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 6697 transitions. [2022-01-10 13:34:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 13:34:01,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:01,663 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:01,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:34:01,664 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1812910243, now seen corresponding path program 1 times [2022-01-10 13:34:01,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:01,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214397266] [2022-01-10 13:34:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:01,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:01,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:01,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214397266] [2022-01-10 13:34:01,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214397266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:01,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:01,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:01,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286749785] [2022-01-10 13:34:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:01,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:01,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:01,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:01,696 INFO L87 Difference]: Start difference. First operand 4306 states and 6697 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 13:34:01,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:01,910 INFO L93 Difference]: Finished difference Result 8244 states and 11616 transitions. [2022-01-10 13:34:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:01,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2022-01-10 13:34:01,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:01,921 INFO L225 Difference]: With dead ends: 8244 [2022-01-10 13:34:01,922 INFO L226 Difference]: Without dead ends: 6100 [2022-01-10 13:34:01,927 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 13:34:01,927 INFO L933 BasicCegarLoop]: 4291 mSDtfsCounter, 4192 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:01,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4192 Valid, 4551 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6100 states. [2022-01-10 13:34:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6100 to 6034. [2022-01-10 13:34:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6034 states, 6032 states have (on average 1.461870026525199) internal successors, (8818), 6033 states have internal predecessors, (8818), 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 13:34:02,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6034 states to 6034 states and 8818 transitions. [2022-01-10 13:34:02,121 INFO L78 Accepts]: Start accepts. Automaton has 6034 states and 8818 transitions. Word has length 89 [2022-01-10 13:34:02,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:02,122 INFO L470 AbstractCegarLoop]: Abstraction has 6034 states and 8818 transitions. [2022-01-10 13:34:02,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 13:34:02,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6034 states and 8818 transitions. [2022-01-10 13:34:02,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 13:34:02,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:02,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:02,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:34:02,124 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:02,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:02,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1912691324, now seen corresponding path program 1 times [2022-01-10 13:34:02,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:02,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707884012] [2022-01-10 13:34:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:02,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:34:02,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:02,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707884012] [2022-01-10 13:34:02,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707884012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:02,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:02,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:02,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156713946] [2022-01-10 13:34:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:02,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:02,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:02,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:02,144 INFO L87 Difference]: Start difference. First operand 6034 states and 8818 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 13:34:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:02,379 INFO L93 Difference]: Finished difference Result 9880 states and 13603 transitions. [2022-01-10 13:34:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 89 [2022-01-10 13:34:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:02,391 INFO L225 Difference]: With dead ends: 9880 [2022-01-10 13:34:02,391 INFO L226 Difference]: Without dead ends: 6000 [2022-01-10 13:34:02,398 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 13:34:02,399 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 279 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 8200 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:02,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 8200 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6000 states. [2022-01-10 13:34:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6000 to 6000. [2022-01-10 13:34:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 5998 states have (on average 1.4638212737579193) internal successors, (8780), 5999 states have internal predecessors, (8780), 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 13:34:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 8780 transitions. [2022-01-10 13:34:02,651 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 8780 transitions. Word has length 89 [2022-01-10 13:34:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:02,651 INFO L470 AbstractCegarLoop]: Abstraction has 6000 states and 8780 transitions. [2022-01-10 13:34:02,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 13:34:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 8780 transitions. [2022-01-10 13:34:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 13:34:02,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:02,655 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:02,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:34:02,656 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash 895416561, now seen corresponding path program 1 times [2022-01-10 13:34:02,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:02,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412185884] [2022-01-10 13:34:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:02,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:02,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:02,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412185884] [2022-01-10 13:34:02,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412185884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:02,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:02,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:02,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081560748] [2022-01-10 13:34:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:02,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:02,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:02,700 INFO L87 Difference]: Start difference. First operand 6000 states and 8780 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 13:34:03,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:03,108 INFO L93 Difference]: Finished difference Result 13150 states and 17644 transitions. [2022-01-10 13:34:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:03,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2022-01-10 13:34:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:03,125 INFO L225 Difference]: With dead ends: 13150 [2022-01-10 13:34:03,125 INFO L226 Difference]: Without dead ends: 9312 [2022-01-10 13:34:03,134 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 13:34:03,135 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 223 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 8689 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:03,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 8689 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9312 states. [2022-01-10 13:34:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9312 to 9312. [2022-01-10 13:34:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9312 states, 9310 states have (on average 1.368313641245972) internal successors, (12739), 9311 states have internal predecessors, (12739), 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 13:34:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9312 states to 9312 states and 12739 transitions. [2022-01-10 13:34:03,581 INFO L78 Accepts]: Start accepts. Automaton has 9312 states and 12739 transitions. Word has length 90 [2022-01-10 13:34:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:03,581 INFO L470 AbstractCegarLoop]: Abstraction has 9312 states and 12739 transitions. [2022-01-10 13:34:03,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 13:34:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9312 states and 12739 transitions. [2022-01-10 13:34:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 13:34:03,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:03,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:03,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:34:03,586 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1894800708, now seen corresponding path program 1 times [2022-01-10 13:34:03,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:03,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44579978] [2022-01-10 13:34:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:03,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:03,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:03,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44579978] [2022-01-10 13:34:03,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44579978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:03,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:03,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:03,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986151133] [2022-01-10 13:34:03,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:03,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:03,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:03,626 INFO L87 Difference]: Start difference. First operand 9312 states and 12739 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 13:34:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:04,148 INFO L93 Difference]: Finished difference Result 19624 states and 25323 transitions. [2022-01-10 13:34:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 115 [2022-01-10 13:34:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:04,170 INFO L225 Difference]: With dead ends: 19624 [2022-01-10 13:34:04,171 INFO L226 Difference]: Without dead ends: 12484 [2022-01-10 13:34:04,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:34:04,181 INFO L933 BasicCegarLoop]: 4235 mSDtfsCounter, 4116 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4116 SdHoareTripleChecker+Valid, 4460 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:04,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4116 Valid, 4460 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12484 states. [2022-01-10 13:34:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12484 to 12418. [2022-01-10 13:34:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12418 states, 12416 states have (on average 1.323695231958763) internal successors, (16435), 12417 states have internal predecessors, (16435), 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 13:34:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12418 states to 12418 states and 16435 transitions. [2022-01-10 13:34:04,649 INFO L78 Accepts]: Start accepts. Automaton has 12418 states and 16435 transitions. Word has length 115 [2022-01-10 13:34:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:04,650 INFO L470 AbstractCegarLoop]: Abstraction has 12418 states and 16435 transitions. [2022-01-10 13:34:04,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 13:34:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 12418 states and 16435 transitions. [2022-01-10 13:34:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 13:34:04,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:04,659 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:04,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:34:04,660 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1336158065, now seen corresponding path program 1 times [2022-01-10 13:34:04,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:04,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995566556] [2022-01-10 13:34:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:04,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 13:34:04,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:04,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995566556] [2022-01-10 13:34:04,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995566556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:04,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:04,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:04,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038118053] [2022-01-10 13:34:04,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:04,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:04,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:04,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:04,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:04,692 INFO L87 Difference]: Start difference. First operand 12418 states and 16435 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 13:34:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:05,170 INFO L93 Difference]: Finished difference Result 20502 states and 26268 transitions. [2022-01-10 13:34:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:05,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 130 [2022-01-10 13:34:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:05,196 INFO L225 Difference]: With dead ends: 20502 [2022-01-10 13:34:05,197 INFO L226 Difference]: Without dead ends: 12602 [2022-01-10 13:34:05,210 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 13:34:05,210 INFO L933 BasicCegarLoop]: 4265 mSDtfsCounter, 4169 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4169 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:05,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4169 Valid, 4525 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12602 states. [2022-01-10 13:34:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12602 to 12202. [2022-01-10 13:34:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12202 states, 12200 states have (on average 1.3058196721311475) internal successors, (15931), 12201 states have internal predecessors, (15931), 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 13:34:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12202 states to 12202 states and 15931 transitions. [2022-01-10 13:34:05,820 INFO L78 Accepts]: Start accepts. Automaton has 12202 states and 15931 transitions. Word has length 130 [2022-01-10 13:34:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:05,820 INFO L470 AbstractCegarLoop]: Abstraction has 12202 states and 15931 transitions. [2022-01-10 13:34:05,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 13:34:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 12202 states and 15931 transitions. [2022-01-10 13:34:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 13:34:05,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:05,830 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:05,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:34:05,831 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash -4816668, now seen corresponding path program 1 times [2022-01-10 13:34:05,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:05,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666033898] [2022-01-10 13:34:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:05,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 13:34:05,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:05,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666033898] [2022-01-10 13:34:05,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666033898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:05,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:05,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:05,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932662019] [2022-01-10 13:34:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:05,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:05,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:05,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:05,875 INFO L87 Difference]: Start difference. First operand 12202 states and 15931 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 13:34:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:06,282 INFO L93 Difference]: Finished difference Result 20858 states and 26223 transitions. [2022-01-10 13:34:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:06,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 131 [2022-01-10 13:34:06,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:06,304 INFO L225 Difference]: With dead ends: 20858 [2022-01-10 13:34:06,304 INFO L226 Difference]: Without dead ends: 10852 [2022-01-10 13:34:06,317 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 13:34:06,319 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 192 mSDsluCounter, 4221 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 8636 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:06,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 8636 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10852 states. [2022-01-10 13:34:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10852 to 10850. [2022-01-10 13:34:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10850 states, 10848 states have (on average 1.3098266961651917) internal successors, (14209), 10849 states have internal predecessors, (14209), 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 13:34:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10850 states to 10850 states and 14209 transitions. [2022-01-10 13:34:06,768 INFO L78 Accepts]: Start accepts. Automaton has 10850 states and 14209 transitions. Word has length 131 [2022-01-10 13:34:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:06,769 INFO L470 AbstractCegarLoop]: Abstraction has 10850 states and 14209 transitions. [2022-01-10 13:34:06,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 13:34:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 10850 states and 14209 transitions. [2022-01-10 13:34:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 13:34:06,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:06,776 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:06,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:34:06,776 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:06,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1798761123, now seen corresponding path program 1 times [2022-01-10 13:34:06,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:06,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673394887] [2022-01-10 13:34:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:06,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:06,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:06,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673394887] [2022-01-10 13:34:06,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673394887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:06,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:06,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:06,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910193855] [2022-01-10 13:34:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:06,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:06,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:06,812 INFO L87 Difference]: Start difference. First operand 10850 states and 14209 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 13:34:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:07,239 INFO L93 Difference]: Finished difference Result 16882 states and 21359 transitions. [2022-01-10 13:34:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:07,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2022-01-10 13:34:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:07,259 INFO L225 Difference]: With dead ends: 16882 [2022-01-10 13:34:07,260 INFO L226 Difference]: Without dead ends: 10852 [2022-01-10 13:34:07,270 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 13:34:07,271 INFO L933 BasicCegarLoop]: 4427 mSDtfsCounter, 184 mSDsluCounter, 4222 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 8649 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:07,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 8649 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10852 states. [2022-01-10 13:34:07,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10852 to 10850. [2022-01-10 13:34:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10850 states, 10848 states have (on average 1.305033185840708) internal successors, (14157), 10849 states have internal predecessors, (14157), 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 13:34:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10850 states to 10850 states and 14157 transitions. [2022-01-10 13:34:07,667 INFO L78 Accepts]: Start accepts. Automaton has 10850 states and 14157 transitions. Word has length 131 [2022-01-10 13:34:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:07,668 INFO L470 AbstractCegarLoop]: Abstraction has 10850 states and 14157 transitions. [2022-01-10 13:34:07,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 13:34:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 10850 states and 14157 transitions. [2022-01-10 13:34:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 13:34:07,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:07,674 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:07,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:34:07,675 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:07,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1872662914, now seen corresponding path program 1 times [2022-01-10 13:34:07,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:07,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245772341] [2022-01-10 13:34:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:07,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 13:34:07,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:07,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245772341] [2022-01-10 13:34:07,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245772341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:07,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:07,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:07,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61432308] [2022-01-10 13:34:07,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:07,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:07,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:07,713 INFO L87 Difference]: Start difference. First operand 10850 states and 14157 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 13:34:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:08,143 INFO L93 Difference]: Finished difference Result 16666 states and 21060 transitions. [2022-01-10 13:34:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:08,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 131 [2022-01-10 13:34:08,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:08,165 INFO L225 Difference]: With dead ends: 16666 [2022-01-10 13:34:08,165 INFO L226 Difference]: Without dead ends: 11244 [2022-01-10 13:34:08,174 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 13:34:08,174 INFO L933 BasicCegarLoop]: 4393 mSDtfsCounter, 226 mSDsluCounter, 4187 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 8580 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:08,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 8580 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11244 states. [2022-01-10 13:34:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11244 to 10832. [2022-01-10 13:34:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10832 states, 10830 states have (on average 1.2896583564173592) internal successors, (13967), 10831 states have internal predecessors, (13967), 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 13:34:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10832 states to 10832 states and 13967 transitions. [2022-01-10 13:34:08,618 INFO L78 Accepts]: Start accepts. Automaton has 10832 states and 13967 transitions. Word has length 131 [2022-01-10 13:34:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:08,618 INFO L470 AbstractCegarLoop]: Abstraction has 10832 states and 13967 transitions. [2022-01-10 13:34:08,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 13:34:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 10832 states and 13967 transitions. [2022-01-10 13:34:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 13:34:08,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:08,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:08,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:34:08,625 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:08,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:08,625 INFO L85 PathProgramCache]: Analyzing trace with hash 768388219, now seen corresponding path program 1 times [2022-01-10 13:34:08,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:08,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749886636] [2022-01-10 13:34:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:08,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:08,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:08,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749886636] [2022-01-10 13:34:08,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749886636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:08,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:08,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:08,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565843340] [2022-01-10 13:34:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:08,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:08,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:08,661 INFO L87 Difference]: Start difference. First operand 10832 states and 13967 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 13:34:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:09,008 INFO L93 Difference]: Finished difference Result 16908 states and 20989 transitions. [2022-01-10 13:34:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:09,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2022-01-10 13:34:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:09,035 INFO L225 Difference]: With dead ends: 16908 [2022-01-10 13:34:09,036 INFO L226 Difference]: Without dead ends: 10890 [2022-01-10 13:34:09,048 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 13:34:09,049 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 206 mSDsluCounter, 4185 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 8602 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:09,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 8602 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:09,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10890 states. [2022-01-10 13:34:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10890 to 10832. [2022-01-10 13:34:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10832 states, 10830 states have (on average 1.2719298245614035) internal successors, (13775), 10831 states have internal predecessors, (13775), 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 13:34:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10832 states to 10832 states and 13775 transitions. [2022-01-10 13:34:09,443 INFO L78 Accepts]: Start accepts. Automaton has 10832 states and 13775 transitions. Word has length 131 [2022-01-10 13:34:09,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:09,443 INFO L470 AbstractCegarLoop]: Abstraction has 10832 states and 13775 transitions. [2022-01-10 13:34:09,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 13:34:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 10832 states and 13775 transitions. [2022-01-10 13:34:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 13:34:09,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:09,450 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:09,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:34:09,450 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2052788422, now seen corresponding path program 1 times [2022-01-10 13:34:09,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851599368] [2022-01-10 13:34:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:09,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:09,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:09,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851599368] [2022-01-10 13:34:09,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851599368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:09,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:09,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:34:09,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101303437] [2022-01-10 13:34:09,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:09,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:09,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:09,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:09,508 INFO L87 Difference]: Start difference. First operand 10832 states and 13775 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 13:34:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:09,823 INFO L93 Difference]: Finished difference Result 14980 states and 18507 transitions. [2022-01-10 13:34:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2022-01-10 13:34:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:09,843 INFO L225 Difference]: With dead ends: 14980 [2022-01-10 13:34:09,843 INFO L226 Difference]: Without dead ends: 8560 [2022-01-10 13:34:09,850 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 13:34:09,850 INFO L933 BasicCegarLoop]: 4402 mSDtfsCounter, 182 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 8579 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:09,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 8579 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8560 states. [2022-01-10 13:34:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8560 to 8534. [2022-01-10 13:34:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8534 states, 8532 states have (on average 1.3029770276605719) internal successors, (11117), 8533 states have internal predecessors, (11117), 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 13:34:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 11117 transitions. [2022-01-10 13:34:10,132 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 11117 transitions. Word has length 132 [2022-01-10 13:34:10,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:10,133 INFO L470 AbstractCegarLoop]: Abstraction has 8534 states and 11117 transitions. [2022-01-10 13:34:10,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 13:34:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 11117 transitions. [2022-01-10 13:34:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 13:34:10,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:10,138 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:10,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:34:10,139 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:10,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1566168422, now seen corresponding path program 1 times [2022-01-10 13:34:10,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:10,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421501511] [2022-01-10 13:34:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:10,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 13:34:10,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:10,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421501511] [2022-01-10 13:34:10,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421501511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:10,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:10,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:34:10,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714965718] [2022-01-10 13:34:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:10,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:34:10,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:34:10,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:34:10,197 INFO L87 Difference]: Start difference. First operand 8534 states and 11117 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 13:34:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:10,566 INFO L93 Difference]: Finished difference Result 14024 states and 17249 transitions. [2022-01-10 13:34:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:34:10,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 133 [2022-01-10 13:34:10,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:10,581 INFO L225 Difference]: With dead ends: 14024 [2022-01-10 13:34:10,581 INFO L226 Difference]: Without dead ends: 7631 [2022-01-10 13:34:10,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:34:10,589 INFO L933 BasicCegarLoop]: 4257 mSDtfsCounter, 713 mSDsluCounter, 12284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 16541 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:10,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 16541 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7631 states. [2022-01-10 13:34:10,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7631 to 6827. [2022-01-10 13:34:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6827 states, 6825 states have (on average 1.3356776556776557) internal successors, (9116), 6826 states have internal predecessors, (9116), 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 13:34:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6827 states to 6827 states and 9116 transitions. [2022-01-10 13:34:10,889 INFO L78 Accepts]: Start accepts. Automaton has 6827 states and 9116 transitions. Word has length 133 [2022-01-10 13:34:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:10,890 INFO L470 AbstractCegarLoop]: Abstraction has 6827 states and 9116 transitions. [2022-01-10 13:34:10,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 13:34:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6827 states and 9116 transitions. [2022-01-10 13:34:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 13:34:10,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:10,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:10,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:34:10,894 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2039717028, now seen corresponding path program 1 times [2022-01-10 13:34:10,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:10,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616640130] [2022-01-10 13:34:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:10,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 13:34:10,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:10,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616640130] [2022-01-10 13:34:10,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616640130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:10,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:10,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:34:10,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766965433] [2022-01-10 13:34:10,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:10,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:34:10,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:10,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:34:10,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:34:10,938 INFO L87 Difference]: Start difference. First operand 6827 states and 9116 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 13:34:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:11,163 INFO L93 Difference]: Finished difference Result 9500 states and 12024 transitions. [2022-01-10 13:34:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:34:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 133 [2022-01-10 13:34:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:11,171 INFO L225 Difference]: With dead ends: 9500 [2022-01-10 13:34:11,171 INFO L226 Difference]: Without dead ends: 3788 [2022-01-10 13:34:11,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:34:11,177 INFO L933 BasicCegarLoop]: 4224 mSDtfsCounter, 558 mSDsluCounter, 12276 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 16500 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:11,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 16500 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2022-01-10 13:34:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3686. [2022-01-10 13:34:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3684 states have (on average 1.5255157437567861) internal successors, (5620), 3685 states have internal predecessors, (5620), 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 13:34:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5620 transitions. [2022-01-10 13:34:11,282 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5620 transitions. Word has length 133 [2022-01-10 13:34:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:11,283 INFO L470 AbstractCegarLoop]: Abstraction has 3686 states and 5620 transitions. [2022-01-10 13:34:11,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 13:34:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5620 transitions. [2022-01-10 13:34:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 13:34:11,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:11,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:11,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:34:11,285 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1897079458, now seen corresponding path program 1 times [2022-01-10 13:34:11,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:11,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551119702] [2022-01-10 13:34:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:11,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 13:34:11,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:11,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551119702] [2022-01-10 13:34:11,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551119702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:11,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:11,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:34:11,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282464308] [2022-01-10 13:34:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:11,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:34:11,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:34:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:34:11,472 INFO L87 Difference]: Start difference. First operand 3686 states and 5620 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 13:34:11,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:11,684 INFO L93 Difference]: Finished difference Result 3686 states and 5620 transitions. [2022-01-10 13:34:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:34:11,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 165 [2022-01-10 13:34:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:11,687 INFO L225 Difference]: With dead ends: 3686 [2022-01-10 13:34:11,688 INFO L226 Difference]: Without dead ends: 2123 [2022-01-10 13:34:11,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:34:11,690 INFO L933 BasicCegarLoop]: 4406 mSDtfsCounter, 4317 mSDsluCounter, 8806 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4317 SdHoareTripleChecker+Valid, 13212 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:11,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4317 Valid, 13212 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:34:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-01-10 13:34:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2022-01-10 13:34:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 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 13:34:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2022-01-10 13:34:11,714 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 165 [2022-01-10 13:34:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:11,714 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2022-01-10 13:34:11,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 13:34:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2022-01-10 13:34:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1647 [2022-01-10 13:34:11,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:11,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:11,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:34:11,752 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1722430777, now seen corresponding path program 1 times [2022-01-10 13:34:11,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:11,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064571058] [2022-01-10 13:34:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:11,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:13,269 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 13:34:13,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:13,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064571058] [2022-01-10 13:34:13,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064571058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:13,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:13,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:13,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490114372] [2022-01-10 13:34:13,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:13,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:13,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:13,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:13,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:13,272 INFO L87 Difference]: Start difference. First operand 2123 states and 3959 transitions. Second operand has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 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 13:34:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:19,935 INFO L93 Difference]: Finished difference Result 6058 states and 11375 transitions. [2022-01-10 13:34:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:19,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 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 1646 [2022-01-10 13:34:19,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:19,957 INFO L225 Difference]: With dead ends: 6058 [2022-01-10 13:34:19,957 INFO L226 Difference]: Without dead ends: 3938 [2022-01-10 13:34:19,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:34:19,962 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 621 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 2591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 7542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2591 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:19,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 1411 Invalid, 7542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2591 Valid, 4951 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-01-10 13:34:19,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-01-10 13:34:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3922. [2022-01-10 13:34:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3921 states have (on average 1.7309359857179292) internal successors, (6787), 3921 states have internal predecessors, (6787), 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 13:34:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6787 transitions. [2022-01-10 13:34:20,021 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6787 transitions. Word has length 1646 [2022-01-10 13:34:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:20,023 INFO L470 AbstractCegarLoop]: Abstraction has 3922 states and 6787 transitions. [2022-01-10 13:34:20,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 548.6666666666666) internal successors, (1646), 2 states have internal predecessors, (1646), 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 13:34:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6787 transitions. [2022-01-10 13:34:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1658 [2022-01-10 13:34:20,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:20,080 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:20,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 13:34:20,080 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:20,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2015290494, now seen corresponding path program 1 times [2022-01-10 13:34:20,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:20,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931711833] [2022-01-10 13:34:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:20,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:20,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931711833] [2022-01-10 13:34:20,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931711833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:20,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:20,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:20,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080002184] [2022-01-10 13:34:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:20,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:20,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:20,782 INFO L87 Difference]: Start difference. First operand 3922 states and 6787 transitions. Second operand has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 2 states have internal predecessors, (1657), 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 13:34:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:27,170 INFO L93 Difference]: Finished difference Result 11252 states and 19642 transitions. [2022-01-10 13:34:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 2 states have internal predecessors, (1657), 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 1657 [2022-01-10 13:34:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:27,184 INFO L225 Difference]: With dead ends: 11252 [2022-01-10 13:34:27,184 INFO L226 Difference]: Without dead ends: 7333 [2022-01-10 13:34:27,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:34:27,189 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 3188 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 2134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 6907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2134 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:27,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3188 Valid, 1182 Invalid, 6907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2134 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-01-10 13:34:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7333 states. [2022-01-10 13:34:27,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7333 to 7333. [2022-01-10 13:34:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7333 states, 7332 states have (on average 1.6518003273322421) internal successors, (12111), 7332 states have internal predecessors, (12111), 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 13:34:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 12111 transitions. [2022-01-10 13:34:27,276 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 12111 transitions. Word has length 1657 [2022-01-10 13:34:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:27,277 INFO L470 AbstractCegarLoop]: Abstraction has 7333 states and 12111 transitions. [2022-01-10 13:34:27,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 552.3333333333334) internal successors, (1657), 2 states have internal predecessors, (1657), 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 13:34:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 12111 transitions. [2022-01-10 13:34:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2022-01-10 13:34:27,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:27,302 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:27,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 13:34:27,303 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1910976909, now seen corresponding path program 1 times [2022-01-10 13:34:27,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:27,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591819813] [2022-01-10 13:34:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:27,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:27,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:27,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591819813] [2022-01-10 13:34:27,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591819813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:27,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:27,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:27,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601418573] [2022-01-10 13:34:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:27,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:27,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:27,973 INFO L87 Difference]: Start difference. First operand 7333 states and 12111 transitions. Second operand has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 2 states have internal predecessors, (1735), 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 13:34:34,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:34:34,446 INFO L93 Difference]: Finished difference Result 21480 states and 35618 transitions. [2022-01-10 13:34:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:34:34,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 2 states have internal predecessors, (1735), 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 1735 [2022-01-10 13:34:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:34:34,465 INFO L225 Difference]: With dead ends: 21480 [2022-01-10 13:34:34,465 INFO L226 Difference]: Without dead ends: 14150 [2022-01-10 13:34:34,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:34:34,474 INFO L933 BasicCegarLoop]: 1629 mSDtfsCounter, 2547 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4487 mSolverCounterSat, 2372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 6859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2372 IncrementalHoareTripleChecker+Valid, 4487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 13:34:34,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2547 Valid, 1776 Invalid, 6859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2372 Valid, 4487 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 13:34:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2022-01-10 13:34:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 14147. [2022-01-10 13:34:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14147 states, 14146 states have (on average 1.4807719496677505) internal successors, (20947), 14146 states have internal predecessors, (20947), 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 13:34:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14147 states to 14147 states and 20947 transitions. [2022-01-10 13:34:34,617 INFO L78 Accepts]: Start accepts. Automaton has 14147 states and 20947 transitions. Word has length 1735 [2022-01-10 13:34:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:34:34,618 INFO L470 AbstractCegarLoop]: Abstraction has 14147 states and 20947 transitions. [2022-01-10 13:34:34,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 2 states have internal predecessors, (1735), 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 13:34:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 14147 states and 20947 transitions. [2022-01-10 13:34:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1752 [2022-01-10 13:34:34,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:34:34,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:34:34,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 13:34:34,653 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:34:34,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:34:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1001165545, now seen corresponding path program 1 times [2022-01-10 13:34:34,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:34:34,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452533748] [2022-01-10 13:34:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:34:34,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:34:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:34:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:34:35,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:34:35,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452533748] [2022-01-10 13:34:35,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452533748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:34:35,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:34:35,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:34:35,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543209422] [2022-01-10 13:34:35,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:34:35,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:34:35,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:34:35,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:34:35,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:34:35,349 INFO L87 Difference]: Start difference. First operand 14147 states and 20947 transitions. Second operand has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 2 states have internal predecessors, (1751), 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)