/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:29:34,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:29:34,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:29:34,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 01:29:34,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:29:34,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:29:34,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:29:34,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:29:34,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:29:34,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:29:34,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:29:34,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:29:34,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:29:34,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:29:34,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:29:34,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:29:34,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:29:34,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:29:34,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:29:34,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:29:34,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:29:34,927 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:29:34,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:29:34,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:29:34,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:29:34,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:29:34,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:29:34,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:29:34,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:29:34,928 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:29:34,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:29:34,929 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:29:34,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:29:34,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:29:34,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:29:34,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:29:34,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:29:34,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:29:34,929 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:29:34,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:29:34,930 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:29:34,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:29:34,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:29:34,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:29:34,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:29:34,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:29:34,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:29:34,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:29:34,931 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:29:35,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:29:35,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:29:35,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:29:35,153 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:29:35,153 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:29:35,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.BOUNDED-8.pals.c [2023-03-31 01:29:36,103 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:29:36,330 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:29:36,330 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.BOUNDED-8.pals.c [2023-03-31 01:29:36,339 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85dc2ce15/7d3ff14476eb4b3e9c0516fe2bfda23f/FLAGa272b0cd7 [2023-03-31 01:29:36,354 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85dc2ce15/7d3ff14476eb4b3e9c0516fe2bfda23f [2023-03-31 01:29:36,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:29:36,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:29:36,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:29:36,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:29:36,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:29:36,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bfbc637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36, skipping insertion in model container [2023-03-31 01:29:36,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:29:36,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:29:36,639 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.BOUNDED-8.pals.c[28192,28205] [2023-03-31 01:29:36,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:29:36,652 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:29:36,743 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.ufo.BOUNDED-8.pals.c[28192,28205] [2023-03-31 01:29:36,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:29:36,755 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:29:36,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36 WrapperNode [2023-03-31 01:29:36,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:29:36,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:29:36,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:29:36,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:29:36,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:29:36,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:29:36,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:29:36,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:29:36,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (1/1) ... [2023-03-31 01:29:36,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:29:36,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:29:36,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:29:36,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:29:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:29:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:29:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:29:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:29:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-03-31 01:29:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-03-31 01:29:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-03-31 01:29:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-03-31 01:29:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 01:29:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 01:29:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:29:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-03-31 01:29:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:29:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:29:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:29:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:29:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:29:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:29:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:29:37,016 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:29:37,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:29:37,739 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:29:37,753 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:29:37,753 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 01:29:37,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:29:37 BoogieIcfgContainer [2023-03-31 01:29:37,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:29:37,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:29:37,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:29:37,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:29:37,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:29:36" (1/3) ... [2023-03-31 01:29:37,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f899c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:29:37, skipping insertion in model container [2023-03-31 01:29:37,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:29:36" (2/3) ... [2023-03-31 01:29:37,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f899c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:29:37, skipping insertion in model container [2023-03-31 01:29:37,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:29:37" (3/3) ... [2023-03-31 01:29:37,764 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c [2023-03-31 01:29:37,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:29:37,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:29:37,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:29:37,837 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8eeeade, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:29:37,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:29:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 288 states have (on average 1.8055555555555556) internal successors, (520), 289 states have internal predecessors, (520), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 01:29:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:29:37,868 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:37,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:37,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:37,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2119737232, now seen corresponding path program 1 times [2023-03-31 01:29:37,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:37,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845259795] [2023-03-31 01:29:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:29:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:29:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:29:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:29:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:29:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:29:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:38,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:38,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845259795] [2023-03-31 01:29:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845259795] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:38,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:38,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:29:38,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550637208] [2023-03-31 01:29:38,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:38,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:29:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:29:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:29:38,762 INFO L87 Difference]: Start difference. First operand has 310 states, 288 states have (on average 1.8055555555555556) internal successors, (520), 289 states have internal predecessors, (520), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:29:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:40,626 INFO L93 Difference]: Finished difference Result 431 states and 737 transitions. [2023-03-31 01:29:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:29:40,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2023-03-31 01:29:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:40,647 INFO L225 Difference]: With dead ends: 431 [2023-03-31 01:29:40,647 INFO L226 Difference]: Without dead ends: 317 [2023-03-31 01:29:40,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:29:40,654 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 724 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:40,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 80 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:29:40,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-03-31 01:29:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 305. [2023-03-31 01:29:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 285 states have (on average 1.8) internal successors, (513), 285 states have internal predecessors, (513), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:29:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 532 transitions. [2023-03-31 01:29:40,752 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 532 transitions. Word has length 104 [2023-03-31 01:29:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:40,753 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 532 transitions. [2023-03-31 01:29:40,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:29:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 532 transitions. [2023-03-31 01:29:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:29:40,756 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:40,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:40,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:29:40,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:40,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:40,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1751583342, now seen corresponding path program 1 times [2023-03-31 01:29:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:40,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248700718] [2023-03-31 01:29:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:40,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:29:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:29:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-03-31 01:29:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-03-31 01:29:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:29:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-03-31 01:29:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:41,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:41,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248700718] [2023-03-31 01:29:41,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248700718] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:41,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:41,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:29:41,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723824430] [2023-03-31 01:29:41,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:41,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:29:41,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:41,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:29:41,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:29:41,405 INFO L87 Difference]: Start difference. First operand 305 states and 532 transitions. Second operand has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:44,905 INFO L93 Difference]: Finished difference Result 434 states and 741 transitions. [2023-03-31 01:29:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:29:44,906 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 104 [2023-03-31 01:29:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:44,908 INFO L225 Difference]: With dead ends: 434 [2023-03-31 01:29:44,908 INFO L226 Difference]: Without dead ends: 327 [2023-03-31 01:29:44,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:29:44,910 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 733 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 3968 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 4026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:44,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 126 Invalid, 4026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3968 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-31 01:29:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-03-31 01:29:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 305. [2023-03-31 01:29:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 285 states have (on average 1.6526315789473685) internal successors, (471), 285 states have internal predecessors, (471), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:29:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 490 transitions. [2023-03-31 01:29:44,967 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 490 transitions. Word has length 104 [2023-03-31 01:29:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:44,969 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 490 transitions. [2023-03-31 01:29:44,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.166666666666667) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 490 transitions. [2023-03-31 01:29:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-03-31 01:29:44,973 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:44,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:44,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:29:44,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:44,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash 167844480, now seen corresponding path program 1 times [2023-03-31 01:29:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:44,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005352745] [2023-03-31 01:29:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-03-31 01:29:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-03-31 01:29:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:29:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:29:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:45,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:45,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005352745] [2023-03-31 01:29:45,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005352745] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:45,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:45,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:29:45,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138904313] [2023-03-31 01:29:45,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:45,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:29:45,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:29:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:29:45,560 INFO L87 Difference]: Start difference. First operand 305 states and 490 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:48,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:48,495 INFO L93 Difference]: Finished difference Result 531 states and 859 transitions. [2023-03-31 01:29:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:29:48,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 145 [2023-03-31 01:29:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:48,498 INFO L225 Difference]: With dead ends: 531 [2023-03-31 01:29:48,498 INFO L226 Difference]: Without dead ends: 430 [2023-03-31 01:29:48,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:29:48,500 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2434 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:48,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2439 Valid, 94 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 01:29:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-03-31 01:29:48,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 398. [2023-03-31 01:29:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 365 states have (on average 1.6493150684931508) internal successors, (602), 366 states have internal predecessors, (602), 16 states have call successors, (16), 16 states have call predecessors, (16), 16 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2023-03-31 01:29:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 635 transitions. [2023-03-31 01:29:48,549 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 635 transitions. Word has length 145 [2023-03-31 01:29:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:48,549 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 635 transitions. [2023-03-31 01:29:48,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 635 transitions. [2023-03-31 01:29:48,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-03-31 01:29:48,551 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:48,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:48,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:29:48,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:48,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1537331487, now seen corresponding path program 1 times [2023-03-31 01:29:48,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:48,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804609614] [2023-03-31 01:29:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:48,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:29:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-31 01:29:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-31 01:29:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-03-31 01:29:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804609614] [2023-03-31 01:29:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804609614] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:49,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:49,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:29:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724861348] [2023-03-31 01:29:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:49,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:29:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:29:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:29:49,157 INFO L87 Difference]: Start difference. First operand 398 states and 635 transitions. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:52,041 INFO L93 Difference]: Finished difference Result 826 states and 1317 transitions. [2023-03-31 01:29:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:29:52,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 148 [2023-03-31 01:29:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:52,044 INFO L225 Difference]: With dead ends: 826 [2023-03-31 01:29:52,044 INFO L226 Difference]: Without dead ends: 632 [2023-03-31 01:29:52,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:29:52,048 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1426 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:52,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 91 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 01:29:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-03-31 01:29:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 576. [2023-03-31 01:29:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 516 states have (on average 1.6511627906976745) internal successors, (852), 520 states have internal predecessors, (852), 28 states have call successors, (28), 28 states have call predecessors, (28), 31 states have return successors, (35), 27 states have call predecessors, (35), 27 states have call successors, (35) [2023-03-31 01:29:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 915 transitions. [2023-03-31 01:29:52,115 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 915 transitions. Word has length 148 [2023-03-31 01:29:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:52,115 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 915 transitions. [2023-03-31 01:29:52,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 915 transitions. [2023-03-31 01:29:52,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-03-31 01:29:52,117 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:52,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:29:52,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:52,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash 369474418, now seen corresponding path program 1 times [2023-03-31 01:29:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:52,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844188027] [2023-03-31 01:29:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:52,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:29:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:29:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-03-31 01:29:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-03-31 01:29:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:52,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844188027] [2023-03-31 01:29:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844188027] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:52,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:52,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:29:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777773344] [2023-03-31 01:29:52,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:52,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:29:52,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:52,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:29:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:29:52,640 INFO L87 Difference]: Start difference. First operand 576 states and 915 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 5 states have internal predecessors, (133), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:55,627 INFO L93 Difference]: Finished difference Result 1400 states and 2217 transitions. [2023-03-31 01:29:55,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:29:55,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 5 states have internal predecessors, (133), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 151 [2023-03-31 01:29:55,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:55,635 INFO L225 Difference]: With dead ends: 1400 [2023-03-31 01:29:55,635 INFO L226 Difference]: Without dead ends: 1028 [2023-03-31 01:29:55,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:29:55,637 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1032 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:55,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 97 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 01:29:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-03-31 01:29:55,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 918. [2023-03-31 01:29:55,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 802 states have (on average 1.6433915211970074) internal successors, (1318), 814 states have internal predecessors, (1318), 52 states have call successors, (52), 52 states have call predecessors, (52), 63 states have return successors, (75), 51 states have call predecessors, (75), 51 states have call successors, (75) [2023-03-31 01:29:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1445 transitions. [2023-03-31 01:29:55,748 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1445 transitions. Word has length 151 [2023-03-31 01:29:55,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:55,749 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1445 transitions. [2023-03-31 01:29:55,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 5 states have internal predecessors, (133), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1445 transitions. [2023-03-31 01:29:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 01:29:55,751 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:55,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:55,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:29:55,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:55,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:55,751 INFO L85 PathProgramCache]: Analyzing trace with hash 801645152, now seen corresponding path program 1 times [2023-03-31 01:29:55,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:55,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004401868] [2023-03-31 01:29:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:29:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:29:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:29:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-03-31 01:29:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-03-31 01:29:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:29:56,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:29:56,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004401868] [2023-03-31 01:29:56,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004401868] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:29:56,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:29:56,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:29:56,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317354404] [2023-03-31 01:29:56,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:29:56,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:29:56,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:29:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:29:56,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:29:56,252 INFO L87 Difference]: Start difference. First operand 918 states and 1445 transitions. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:59,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:29:59,089 INFO L93 Difference]: Finished difference Result 2506 states and 3927 transitions. [2023-03-31 01:29:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:29:59,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 154 [2023-03-31 01:29:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:29:59,111 INFO L225 Difference]: With dead ends: 2506 [2023-03-31 01:29:59,111 INFO L226 Difference]: Without dead ends: 1792 [2023-03-31 01:29:59,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-03-31 01:29:59,113 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 2770 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:29:59,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2772 Valid, 87 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 01:29:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2023-03-31 01:29:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1574. [2023-03-31 01:29:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1342 states have (on average 1.6259314456035767) internal successors, (2182), 1374 states have internal predecessors, (2182), 100 states have call successors, (100), 100 states have call predecessors, (100), 131 states have return successors, (163), 99 states have call predecessors, (163), 99 states have call successors, (163) [2023-03-31 01:29:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2445 transitions. [2023-03-31 01:29:59,343 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2445 transitions. Word has length 154 [2023-03-31 01:29:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:29:59,344 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2445 transitions. [2023-03-31 01:29:59,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:29:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2445 transitions. [2023-03-31 01:29:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 01:29:59,346 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:29:59,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:29:59,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:29:59,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:29:59,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:29:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1870716042, now seen corresponding path program 1 times [2023-03-31 01:29:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:29:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608861047] [2023-03-31 01:29:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:29:59,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:29:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:29:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:29:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:29:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:29:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:30:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:30:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:30:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:00,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-03-31 01:30:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:00,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-03-31 01:30:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:00,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608861047] [2023-03-31 01:30:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608861047] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:00,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:30:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046781448] [2023-03-31 01:30:00,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:30:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:30:00,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:30:00,178 INFO L87 Difference]: Start difference. First operand 1574 states and 2445 transitions. Second operand has 16 states, 16 states have (on average 8.6875) internal successors, (139), 11 states have internal predecessors, (139), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:12,581 INFO L93 Difference]: Finished difference Result 11899 states and 19007 transitions. [2023-03-31 01:30:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-03-31 01:30:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 11 states have internal predecessors, (139), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 157 [2023-03-31 01:30:12,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:12,618 INFO L225 Difference]: With dead ends: 11899 [2023-03-31 01:30:12,618 INFO L226 Difference]: Without dead ends: 10529 [2023-03-31 01:30:12,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2023-03-31 01:30:12,627 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 6222 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 6014 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6233 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 6275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 6014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:12,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6233 Valid, 201 Invalid, 6275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 6014 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-03-31 01:30:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10529 states. [2023-03-31 01:30:13,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10529 to 9083. [2023-03-31 01:30:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 7600 states have (on average 1.6273684210526316) internal successors, (12368), 7827 states have internal predecessors, (12368), 628 states have call successors, (628), 628 states have call predecessors, (628), 854 states have return successors, (1435), 627 states have call predecessors, (1435), 627 states have call successors, (1435) [2023-03-31 01:30:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 14431 transitions. [2023-03-31 01:30:13,661 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 14431 transitions. Word has length 157 [2023-03-31 01:30:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:13,661 INFO L495 AbstractCegarLoop]: Abstraction has 9083 states and 14431 transitions. [2023-03-31 01:30:13,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 11 states have internal predecessors, (139), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:30:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 14431 transitions. [2023-03-31 01:30:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-03-31 01:30:13,667 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:13,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:13,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:30:13,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:13,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash 935916441, now seen corresponding path program 1 times [2023-03-31 01:30:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:13,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239461602] [2023-03-31 01:30:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:13,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:30:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:30:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:30:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-03-31 01:30:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-03-31 01:30:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-03-31 01:30:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239461602] [2023-03-31 01:30:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239461602] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:14,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:14,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:30:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690362506] [2023-03-31 01:30:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:14,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:30:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:30:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:30:14,336 INFO L87 Difference]: Start difference. First operand 9083 states and 14431 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:30:30,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:30,003 INFO L93 Difference]: Finished difference Result 17699 states and 28318 transitions. [2023-03-31 01:30:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-03-31 01:30:30,004 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 158 [2023-03-31 01:30:30,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:30,058 INFO L225 Difference]: With dead ends: 17699 [2023-03-31 01:30:30,058 INFO L226 Difference]: Without dead ends: 14517 [2023-03-31 01:30:30,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5060 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=2051, Invalid=11521, Unknown=0, NotChecked=0, Total=13572 [2023-03-31 01:30:30,072 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 5598 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 8172 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5613 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 8450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 8172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:30,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5613 Valid, 365 Invalid, 8450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [278 Valid, 8172 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-03-31 01:30:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14517 states. [2023-03-31 01:30:31,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14517 to 12181. [2023-03-31 01:30:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12181 states, 10230 states have (on average 1.635386119257087) internal successors, (16730), 10509 states have internal predecessors, (16730), 836 states have call successors, (836), 836 states have call predecessors, (836), 1114 states have return successors, (1867), 835 states have call predecessors, (1867), 835 states have call successors, (1867) [2023-03-31 01:30:31,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12181 states to 12181 states and 19433 transitions. [2023-03-31 01:30:31,346 INFO L78 Accepts]: Start accepts. Automaton has 12181 states and 19433 transitions. Word has length 158 [2023-03-31 01:30:31,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:31,346 INFO L495 AbstractCegarLoop]: Abstraction has 12181 states and 19433 transitions. [2023-03-31 01:30:31,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:30:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 12181 states and 19433 transitions. [2023-03-31 01:30:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-03-31 01:30:31,352 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:31,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:31,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:30:31,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:31,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 988585494, now seen corresponding path program 1 times [2023-03-31 01:30:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:31,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610476879] [2023-03-31 01:30:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:31,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-03-31 01:30:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-31 01:30:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-03-31 01:30:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:30:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-03-31 01:30:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-03-31 01:30:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:32,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:32,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610476879] [2023-03-31 01:30:32,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610476879] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:32,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:32,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:30:32,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009735477] [2023-03-31 01:30:32,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:32,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:30:32,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:30:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:30:32,021 INFO L87 Difference]: Start difference. First operand 12181 states and 19433 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8)