/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-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:54:20,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:54:20,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:54:20,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:54:20,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:54:20,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:54:20,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:54:20,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:54:20,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:54:20,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:54:20,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:54:20,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:54:20,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:54:20,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:54:20,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:54:20,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:54:20,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:54:20,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:54:20,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:54:20,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:54:20,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:54:20,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:54:20,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:54:20,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:54:20,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:54:20,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:54:20,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:54:20,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:54:20,880 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 [2023-04-02 06:54:20,904 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:54:20,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:54:20,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:54:20,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:54:20,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:54:20,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:54:20,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:54:20,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:54:20,906 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:54:20,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:54:20,907 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:54:20,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:54:20,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:54:20,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:54:20,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:54:20,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:54:20,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:54:20,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:54:20,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:54:20,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:54:20,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:54:20,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:54:20,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:54:20,909 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:54:20,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:54:20,909 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:54:20,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:54:21,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:54:21,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:54:21,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:54:21,065 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:54:21,065 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:54:21,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-04-02 06:54:22,233 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:54:22,485 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:54:22,485 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-04-02 06:54:22,500 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad50434a1/5d6fb6ddf7864a82ab41b9fd704441c1/FLAG7faac5614 [2023-04-02 06:54:22,511 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad50434a1/5d6fb6ddf7864a82ab41b9fd704441c1 [2023-04-02 06:54:22,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:54:22,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:54:22,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:54:22,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:54:22,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:54:22,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:54:22" (1/1) ... [2023-04-02 06:54:22,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57297525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:22, skipping insertion in model container [2023-04-02 06:54:22,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:54:22" (1/1) ... [2023-04-02 06:54:22,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:54:22,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:54:22,840 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-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13338,13351] [2023-04-02 06:54:22,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:54:22,924 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:54:22,981 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-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13338,13351] [2023-04-02 06:54:23,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:54:23,029 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:54:23,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23 WrapperNode [2023-04-02 06:54:23,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:54:23,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:54:23,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:54:23,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:54:23,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,125 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:54:23,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:54:23,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:54:23,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:54:23,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (1/1) ... [2023-04-02 06:54:23,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:54:23,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:54:23,175 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) [2023-04-02 06:54:23,211 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 [2023-04-02 06:54:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:54:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:54:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:54:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:54:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:54:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:54:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:54:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:54:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:54:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:54:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:54:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:54:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:54:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:54:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:54:23,361 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:54:23,362 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:54:24,092 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:54:24,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:54:24,101 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:54:24,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:54:24 BoogieIcfgContainer [2023-04-02 06:54:24,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:54:24,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:54:24,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:54:24,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:54:24,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:54:22" (1/3) ... [2023-04-02 06:54:24,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd92014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:54:24, skipping insertion in model container [2023-04-02 06:54:24,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:54:23" (2/3) ... [2023-04-02 06:54:24,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd92014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:54:24, skipping insertion in model container [2023-04-02 06:54:24,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:54:24" (3/3) ... [2023-04-02 06:54:24,108 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-04-02 06:54:24,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:54:24,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:54:24,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:54:24,155 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;@79d4ea31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:54:24,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:54:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 329 states have (on average 1.7872340425531914) internal successors, (588), 337 states have internal predecessors, (588), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:54:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-02 06:54:24,170 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:24,170 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] [2023-04-02 06:54:24,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:24,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:24,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1397241302, now seen corresponding path program 1 times [2023-04-02 06:54:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:24,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548555291] [2023-04-02 06:54:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:24,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:25,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548555291] [2023-04-02 06:54:25,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548555291] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:25,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:25,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:54:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816809994] [2023-04-02 06:54:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:25,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:54:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:54:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:54:25,159 INFO L87 Difference]: Start difference. First operand has 342 states, 329 states have (on average 1.7872340425531914) internal successors, (588), 337 states have internal predecessors, (588), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:26,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:26,695 INFO L93 Difference]: Finished difference Result 642 states and 1074 transitions. [2023-04-02 06:54:26,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:54:26,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2023-04-02 06:54:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:26,706 INFO L225 Difference]: With dead ends: 642 [2023-04-02 06:54:26,706 INFO L226 Difference]: Without dead ends: 464 [2023-04-02 06:54:26,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:26,711 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 248 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:26,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1118 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:54:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-04-02 06:54:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 462. [2023-04-02 06:54:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 458 states have (on average 1.6462882096069869) internal successors, (754), 458 states have internal predecessors, (754), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 757 transitions. [2023-04-02 06:54:26,764 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 757 transitions. Word has length 110 [2023-04-02 06:54:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:26,765 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 757 transitions. [2023-04-02 06:54:26,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 757 transitions. [2023-04-02 06:54:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 06:54:26,767 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:26,767 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] [2023-04-02 06:54:26,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:54:26,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:26,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash 980158043, now seen corresponding path program 1 times [2023-04-02 06:54:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:26,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826416281] [2023-04-02 06:54:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:26,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:27,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:27,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826416281] [2023-04-02 06:54:27,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826416281] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:27,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:27,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:54:27,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046958062] [2023-04-02 06:54:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:27,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:54:27,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:27,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:54:27,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:54:27,160 INFO L87 Difference]: Start difference. First operand 462 states and 757 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:28,301 INFO L93 Difference]: Finished difference Result 996 states and 1625 transitions. [2023-04-02 06:54:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:54:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-04-02 06:54:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:28,306 INFO L225 Difference]: With dead ends: 996 [2023-04-02 06:54:28,306 INFO L226 Difference]: Without dead ends: 719 [2023-04-02 06:54:28,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:28,308 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 212 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:28,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1049 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:54:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-04-02 06:54:28,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 717. [2023-04-02 06:54:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 713 states have (on average 1.6367461430575034) internal successors, (1167), 713 states have internal predecessors, (1167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1170 transitions. [2023-04-02 06:54:28,341 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1170 transitions. Word has length 113 [2023-04-02 06:54:28,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:28,341 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1170 transitions. [2023-04-02 06:54:28,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1170 transitions. [2023-04-02 06:54:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 06:54:28,343 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:28,343 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] [2023-04-02 06:54:28,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:54:28,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:28,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1883400985, now seen corresponding path program 1 times [2023-04-02 06:54:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:28,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939409966] [2023-04-02 06:54:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939409966] [2023-04-02 06:54:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939409966] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:28,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:28,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:54:28,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591730525] [2023-04-02 06:54:28,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:28,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:54:28,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:28,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:54:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:54:28,785 INFO L87 Difference]: Start difference. First operand 717 states and 1170 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:29,953 INFO L93 Difference]: Finished difference Result 1741 states and 2828 transitions. [2023-04-02 06:54:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:54:29,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2023-04-02 06:54:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:29,957 INFO L225 Difference]: With dead ends: 1741 [2023-04-02 06:54:29,957 INFO L226 Difference]: Without dead ends: 1209 [2023-04-02 06:54:29,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:29,959 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 205 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:29,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1050 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:54:29,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2023-04-02 06:54:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1207. [2023-04-02 06:54:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1203 states have (on average 1.6251039068994182) internal successors, (1955), 1203 states have internal predecessors, (1955), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1958 transitions. [2023-04-02 06:54:29,995 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1958 transitions. Word has length 116 [2023-04-02 06:54:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:29,995 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1958 transitions. [2023-04-02 06:54:29,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1958 transitions. [2023-04-02 06:54:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-04-02 06:54:29,997 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:29,997 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] [2023-04-02 06:54:29,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:54:29,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:29,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1607033068, now seen corresponding path program 1 times [2023-04-02 06:54:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134576308] [2023-04-02 06:54:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:30,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134576308] [2023-04-02 06:54:30,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134576308] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:30,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:30,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:54:30,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783428359] [2023-04-02 06:54:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:30,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:54:30,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:54:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:54:30,372 INFO L87 Difference]: Start difference. First operand 1207 states and 1958 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:31,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:31,666 INFO L93 Difference]: Finished difference Result 3171 states and 5120 transitions. [2023-04-02 06:54:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:54:31,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2023-04-02 06:54:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:31,688 INFO L225 Difference]: With dead ends: 3171 [2023-04-02 06:54:31,688 INFO L226 Difference]: Without dead ends: 2149 [2023-04-02 06:54:31,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:31,698 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 198 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:31,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1051 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:54:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-04-02 06:54:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2147. [2023-04-02 06:54:31,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2143 states have (on average 1.6122258516098926) internal successors, (3455), 2143 states have internal predecessors, (3455), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3458 transitions. [2023-04-02 06:54:31,769 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3458 transitions. Word has length 119 [2023-04-02 06:54:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:31,769 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3458 transitions. [2023-04-02 06:54:31,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3458 transitions. [2023-04-02 06:54:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 06:54:31,771 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:31,771 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] [2023-04-02 06:54:31,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:54:31,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:31,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:31,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2038499700, now seen corresponding path program 1 times [2023-04-02 06:54:31,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:31,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942464698] [2023-04-02 06:54:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:31,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:32,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:32,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:32,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942464698] [2023-04-02 06:54:32,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942464698] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:32,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:32,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:54:32,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555809762] [2023-04-02 06:54:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:32,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:54:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:54:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:54:32,233 INFO L87 Difference]: Start difference. First operand 2147 states and 3458 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:33,931 INFO L93 Difference]: Finished difference Result 11223 states and 18166 transitions. [2023-04-02 06:54:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:54:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2023-04-02 06:54:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:33,962 INFO L225 Difference]: With dead ends: 11223 [2023-04-02 06:54:33,962 INFO L226 Difference]: Without dead ends: 9237 [2023-04-02 06:54:33,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:54:33,970 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 2020 mSDsluCounter, 4456 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 4993 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:33,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 4993 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:54:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9237 states. [2023-04-02 06:54:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9237 to 3926. [2023-04-02 06:54:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3926 states, 3922 states have (on average 1.6183069862315145) internal successors, (6347), 3922 states have internal predecessors, (6347), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 6350 transitions. [2023-04-02 06:54:34,198 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 6350 transitions. Word has length 122 [2023-04-02 06:54:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:34,198 INFO L495 AbstractCegarLoop]: Abstraction has 3926 states and 6350 transitions. [2023-04-02 06:54:34,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 6350 transitions. [2023-04-02 06:54:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-02 06:54:34,201 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:34,201 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] [2023-04-02 06:54:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:54:34,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:34,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1164850430, now seen corresponding path program 1 times [2023-04-02 06:54:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400871417] [2023-04-02 06:54:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:34,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:34,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400871417] [2023-04-02 06:54:34,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400871417] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:34,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:34,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:54:34,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720241815] [2023-04-02 06:54:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:34,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:54:34,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:34,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:54:34,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:34,714 INFO L87 Difference]: Start difference. First operand 3926 states and 6350 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:36,322 INFO L93 Difference]: Finished difference Result 11511 states and 18647 transitions. [2023-04-02 06:54:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:54:36,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-02 06:54:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:36,347 INFO L225 Difference]: With dead ends: 11511 [2023-04-02 06:54:36,347 INFO L226 Difference]: Without dead ends: 7770 [2023-04-02 06:54:36,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:54:36,356 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 693 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:36,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1631 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:54:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7770 states. [2023-04-02 06:54:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7770 to 5824. [2023-04-02 06:54:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5824 states, 5820 states have (on average 1.615979381443299) internal successors, (9405), 5820 states have internal predecessors, (9405), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 9408 transitions. [2023-04-02 06:54:36,715 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 9408 transitions. Word has length 123 [2023-04-02 06:54:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:36,715 INFO L495 AbstractCegarLoop]: Abstraction has 5824 states and 9408 transitions. [2023-04-02 06:54:36,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 9408 transitions. [2023-04-02 06:54:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 06:54:36,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:36,719 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] [2023-04-02 06:54:36,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:54:36,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:36,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:36,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1027489620, now seen corresponding path program 1 times [2023-04-02 06:54:36,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:36,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442580574] [2023-04-02 06:54:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:36,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:37,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442580574] [2023-04-02 06:54:37,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442580574] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:54:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896380768] [2023-04-02 06:54:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:37,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:54:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:54:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:54:37,147 INFO L87 Difference]: Start difference. First operand 5824 states and 9408 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:39,084 INFO L93 Difference]: Finished difference Result 12789 states and 20630 transitions. [2023-04-02 06:54:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:54:39,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2023-04-02 06:54:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:39,107 INFO L225 Difference]: With dead ends: 12789 [2023-04-02 06:54:39,108 INFO L226 Difference]: Without dead ends: 8850 [2023-04-02 06:54:39,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:39,126 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 220 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:39,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1213 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:54:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8850 states. [2023-04-02 06:54:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8850 to 8848. [2023-04-02 06:54:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8848 states, 8844 states have (on average 1.6066259611035731) internal successors, (14209), 8844 states have internal predecessors, (14209), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 14212 transitions. [2023-04-02 06:54:39,701 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 14212 transitions. Word has length 124 [2023-04-02 06:54:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:39,701 INFO L495 AbstractCegarLoop]: Abstraction has 8848 states and 14212 transitions. [2023-04-02 06:54:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 14212 transitions. [2023-04-02 06:54:39,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 06:54:39,705 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:39,705 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] [2023-04-02 06:54:39,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:54:39,705 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:39,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:39,706 INFO L85 PathProgramCache]: Analyzing trace with hash -445294446, now seen corresponding path program 1 times [2023-04-02 06:54:39,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:39,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812459626] [2023-04-02 06:54:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:39,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:40,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812459626] [2023-04-02 06:54:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812459626] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:40,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:54:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777518705] [2023-04-02 06:54:40,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:40,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:54:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:54:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:54:40,123 INFO L87 Difference]: Start difference. First operand 8848 states and 14212 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:42,086 INFO L93 Difference]: Finished difference Result 17018 states and 27321 transitions. [2023-04-02 06:54:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:54:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2023-04-02 06:54:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:42,110 INFO L225 Difference]: With dead ends: 17018 [2023-04-02 06:54:42,110 INFO L226 Difference]: Without dead ends: 12344 [2023-04-02 06:54:42,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:42,118 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 213 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:42,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1185 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:54:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12344 states. [2023-04-02 06:54:42,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12344 to 12342. [2023-04-02 06:54:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12342 states, 12338 states have (on average 1.598233100988815) internal successors, (19719), 12338 states have internal predecessors, (19719), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12342 states to 12342 states and 19722 transitions. [2023-04-02 06:54:42,806 INFO L78 Accepts]: Start accepts. Automaton has 12342 states and 19722 transitions. Word has length 124 [2023-04-02 06:54:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:42,806 INFO L495 AbstractCegarLoop]: Abstraction has 12342 states and 19722 transitions. [2023-04-02 06:54:42,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 12342 states and 19722 transitions. [2023-04-02 06:54:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 06:54:42,808 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:42,808 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] [2023-04-02 06:54:42,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:54:42,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:42,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1526272416, now seen corresponding path program 1 times [2023-04-02 06:54:42,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:42,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95471154] [2023-04-02 06:54:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:42,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:43,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:43,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95471154] [2023-04-02 06:54:43,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95471154] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:43,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:43,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:54:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708326126] [2023-04-02 06:54:43,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:43,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:54:43,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:43,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:54:43,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:54:43,218 INFO L87 Difference]: Start difference. First operand 12342 states and 19722 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:45,631 INFO L93 Difference]: Finished difference Result 23584 states and 37667 transitions. [2023-04-02 06:54:45,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:54:45,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2023-04-02 06:54:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:45,673 INFO L225 Difference]: With dead ends: 23584 [2023-04-02 06:54:45,673 INFO L226 Difference]: Without dead ends: 17074 [2023-04-02 06:54:45,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:45,688 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 206 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:45,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1152 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:54:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17074 states. [2023-04-02 06:54:46,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17074 to 17072. [2023-04-02 06:54:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17072 states, 17068 states have (on average 1.588762596672135) internal successors, (27117), 17068 states have internal predecessors, (27117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17072 states to 17072 states and 27120 transitions. [2023-04-02 06:54:46,804 INFO L78 Accepts]: Start accepts. Automaton has 17072 states and 27120 transitions. Word has length 124 [2023-04-02 06:54:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:46,804 INFO L495 AbstractCegarLoop]: Abstraction has 17072 states and 27120 transitions. [2023-04-02 06:54:46,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:46,804 INFO L276 IsEmpty]: Start isEmpty. Operand 17072 states and 27120 transitions. [2023-04-02 06:54:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 06:54:46,805 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:46,805 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] [2023-04-02 06:54:46,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:54:46,821 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:46,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash -450444130, now seen corresponding path program 1 times [2023-04-02 06:54:46,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:46,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032054166] [2023-04-02 06:54:46,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:46,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:47,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:47,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032054166] [2023-04-02 06:54:47,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032054166] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:47,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:47,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:54:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441219383] [2023-04-02 06:54:47,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:47,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:54:47,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:47,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:54:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:54:47,311 INFO L87 Difference]: Start difference. First operand 17072 states and 27120 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:50,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:50,191 INFO L93 Difference]: Finished difference Result 32422 states and 51469 transitions. [2023-04-02 06:54:50,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:54:50,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 124 [2023-04-02 06:54:50,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:50,293 INFO L225 Difference]: With dead ends: 32422 [2023-04-02 06:54:50,293 INFO L226 Difference]: Without dead ends: 23408 [2023-04-02 06:54:50,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:54:50,308 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 199 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:50,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1119 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:54:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23408 states. [2023-04-02 06:54:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23408 to 23406. [2023-04-02 06:54:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23406 states, 23402 states have (on average 1.5777283992821127) internal successors, (36922), 23402 states have internal predecessors, (36922), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23406 states to 23406 states and 36925 transitions. [2023-04-02 06:54:51,739 INFO L78 Accepts]: Start accepts. Automaton has 23406 states and 36925 transitions. Word has length 124 [2023-04-02 06:54:51,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:51,739 INFO L495 AbstractCegarLoop]: Abstraction has 23406 states and 36925 transitions. [2023-04-02 06:54:51,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 23406 states and 36925 transitions. [2023-04-02 06:54:51,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-02 06:54:51,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:51,741 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] [2023-04-02 06:54:51,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:54:51,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:51,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash 806149799, now seen corresponding path program 1 times [2023-04-02 06:54:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:51,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91851984] [2023-04-02 06:54:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:51,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:54:52,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:52,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91851984] [2023-04-02 06:54:52,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91851984] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:52,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:52,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:54:52,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365714017] [2023-04-02 06:54:52,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:52,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:54:52,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:52,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:54:52,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:54:52,438 INFO L87 Difference]: Start difference. First operand 23406 states and 36925 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:54:56,352 INFO L93 Difference]: Finished difference Result 38757 states and 60764 transitions. [2023-04-02 06:54:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:54:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132 [2023-04-02 06:54:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:54:56,433 INFO L225 Difference]: With dead ends: 38757 [2023-04-02 06:54:56,433 INFO L226 Difference]: Without dead ends: 38755 [2023-04-02 06:54:56,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:54:56,446 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 453 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:54:56,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 2463 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:54:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38755 states. [2023-04-02 06:54:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38755 to 23726. [2023-04-02 06:54:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23726 states, 23722 states have (on average 1.5665205294663183) internal successors, (37161), 23722 states have internal predecessors, (37161), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23726 states to 23726 states and 37164 transitions. [2023-04-02 06:54:58,619 INFO L78 Accepts]: Start accepts. Automaton has 23726 states and 37164 transitions. Word has length 132 [2023-04-02 06:54:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:54:58,619 INFO L495 AbstractCegarLoop]: Abstraction has 23726 states and 37164 transitions. [2023-04-02 06:54:58,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:54:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 23726 states and 37164 transitions. [2023-04-02 06:54:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-02 06:54:58,624 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:54:58,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:54:58,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:54:58,624 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:54:58,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:54:58,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1128584175, now seen corresponding path program 1 times [2023-04-02 06:54:58,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:54:58,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658344252] [2023-04-02 06:54:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:54:58,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:54:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:59,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:54:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:54:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 06:54:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:54:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658344252] [2023-04-02 06:54:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658344252] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:54:59,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:54:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:54:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921624870] [2023-04-02 06:54:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:54:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:54:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:54:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:54:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:54:59,082 INFO L87 Difference]: Start difference. First operand 23726 states and 37164 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:55:06,101 INFO L93 Difference]: Finished difference Result 78070 states and 122329 transitions. [2023-04-02 06:55:06,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:55:06,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166 [2023-04-02 06:55:06,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:55:06,214 INFO L225 Difference]: With dead ends: 78070 [2023-04-02 06:55:06,214 INFO L226 Difference]: Without dead ends: 68456 [2023-04-02 06:55:06,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:55:06,241 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 1376 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:55:06,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 3489 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:55:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68456 states. [2023-04-02 06:55:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68456 to 39802. [2023-04-02 06:55:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39802 states, 39798 states have (on average 1.5623146891803608) internal successors, (62177), 39798 states have internal predecessors, (62177), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:10,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39802 states to 39802 states and 62180 transitions. [2023-04-02 06:55:10,646 INFO L78 Accepts]: Start accepts. Automaton has 39802 states and 62180 transitions. Word has length 166 [2023-04-02 06:55:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:55:10,646 INFO L495 AbstractCegarLoop]: Abstraction has 39802 states and 62180 transitions. [2023-04-02 06:55:10,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 39802 states and 62180 transitions. [2023-04-02 06:55:10,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-02 06:55:10,651 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:55:10,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:55:10,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:55:10,651 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:55:10,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:55:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1710779349, now seen corresponding path program 1 times [2023-04-02 06:55:10,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:55:10,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992360562] [2023-04-02 06:55:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:55:10,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:55:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:55:11,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:55:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:55:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 06:55:11,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:55:11,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992360562] [2023-04-02 06:55:11,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992360562] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:55:11,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:55:11,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:55:11,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971073816] [2023-04-02 06:55:11,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:55:11,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:55:11,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:55:11,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:55:11,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:55:11,087 INFO L87 Difference]: Start difference. First operand 39802 states and 62180 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:55:20,062 INFO L93 Difference]: Finished difference Result 92059 states and 144183 transitions. [2023-04-02 06:55:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:55:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166 [2023-04-02 06:55:20,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:55:20,217 INFO L225 Difference]: With dead ends: 92059 [2023-04-02 06:55:20,217 INFO L226 Difference]: Without dead ends: 76517 [2023-04-02 06:55:20,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:55:20,255 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1385 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:55:20,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 3096 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:55:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76517 states. [2023-04-02 06:55:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76517 to 57522. [2023-04-02 06:55:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57522 states, 57518 states have (on average 1.5618241246218576) internal successors, (89833), 57518 states have internal predecessors, (89833), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57522 states to 57522 states and 89836 transitions. [2023-04-02 06:55:26,923 INFO L78 Accepts]: Start accepts. Automaton has 57522 states and 89836 transitions. Word has length 166 [2023-04-02 06:55:26,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:55:26,924 INFO L495 AbstractCegarLoop]: Abstraction has 57522 states and 89836 transitions. [2023-04-02 06:55:26,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand 57522 states and 89836 transitions. [2023-04-02 06:55:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-02 06:55:26,928 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:55:26,928 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:55:26,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:55:26,928 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:55:26,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:55:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash -612621085, now seen corresponding path program 1 times [2023-04-02 06:55:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:55:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35653998] [2023-04-02 06:55:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:55:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:55:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:55:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:55:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:55:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 06:55:27,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:55:27,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35653998] [2023-04-02 06:55:27,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35653998] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:55:27,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:55:27,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:55:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921840170] [2023-04-02 06:55:27,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:55:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:55:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:55:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:55:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:55:27,362 INFO L87 Difference]: Start difference. First operand 57522 states and 89836 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:55:38,120 INFO L93 Difference]: Finished difference Result 104053 states and 162884 transitions. [2023-04-02 06:55:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:55:38,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166 [2023-04-02 06:55:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:55:38,299 INFO L225 Difference]: With dead ends: 104053 [2023-04-02 06:55:38,299 INFO L226 Difference]: Without dead ends: 88511 [2023-04-02 06:55:38,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:55:38,336 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1484 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:55:38,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 3328 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:55:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88511 states. [2023-04-02 06:55:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88511 to 70436. [2023-04-02 06:55:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70436 states, 70432 states have (on average 1.5615487278509768) internal successors, (109983), 70432 states have internal predecessors, (109983), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:46,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70436 states to 70436 states and 109986 transitions. [2023-04-02 06:55:46,430 INFO L78 Accepts]: Start accepts. Automaton has 70436 states and 109986 transitions. Word has length 166 [2023-04-02 06:55:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:55:46,430 INFO L495 AbstractCegarLoop]: Abstraction has 70436 states and 109986 transitions. [2023-04-02 06:55:46,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:46,430 INFO L276 IsEmpty]: Start isEmpty. Operand 70436 states and 109986 transitions. [2023-04-02 06:55:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-02 06:55:46,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:55:46,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:55:46,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:55:46,438 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:55:46,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:55:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1705629665, now seen corresponding path program 1 times [2023-04-02 06:55:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:55:46,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737823519] [2023-04-02 06:55:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:55:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:55:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:55:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:55:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:55:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 06:55:46,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:55:46,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737823519] [2023-04-02 06:55:46,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737823519] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:55:46,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:55:46,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:55:46,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406651190] [2023-04-02 06:55:46,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:55:46,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:55:46,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:55:46,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:55:46,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:55:46,897 INFO L87 Difference]: Start difference. First operand 70436 states and 109986 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:55:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:55:58,662 INFO L93 Difference]: Finished difference Result 112527 states and 176073 transitions. [2023-04-02 06:55:58,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:55:58,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166 [2023-04-02 06:55:58,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:55:58,835 INFO L225 Difference]: With dead ends: 112527 [2023-04-02 06:55:58,836 INFO L226 Difference]: Without dead ends: 96985 [2023-04-02 06:55:58,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:55:58,875 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 1405 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:55:58,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 3454 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:55:58,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96985 states. [2023-04-02 06:56:08,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96985 to 83350. [2023-04-02 06:56:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83350 states, 83346 states have (on average 1.5613586734816307) internal successors, (130133), 83346 states have internal predecessors, (130133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:56:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83350 states to 83350 states and 130136 transitions. [2023-04-02 06:56:08,295 INFO L78 Accepts]: Start accepts. Automaton has 83350 states and 130136 transitions. Word has length 166 [2023-04-02 06:56:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:08,296 INFO L495 AbstractCegarLoop]: Abstraction has 83350 states and 130136 transitions. [2023-04-02 06:56:08,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:56:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 83350 states and 130136 transitions. [2023-04-02 06:56:08,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 06:56:08,313 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:08,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:56:08,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:56:08,314 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:08,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:08,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1013975007, now seen corresponding path program 1 times [2023-04-02 06:56:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:08,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417480070] [2023-04-02 06:56:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:08,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 06:56:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417480070] [2023-04-02 06:56:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417480070] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:56:08,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74692557] [2023-04-02 06:56:08,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:56:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:56:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:08,689 INFO L87 Difference]: Start difference. First operand 83350 states and 130136 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:56:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:56:23,899 INFO L93 Difference]: Finished difference Result 174650 states and 273162 transitions. [2023-04-02 06:56:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:56:23,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2023-04-02 06:56:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:56:24,172 INFO L225 Difference]: With dead ends: 174650 [2023-04-02 06:56:24,173 INFO L226 Difference]: Without dead ends: 132150 [2023-04-02 06:56:24,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:56:24,247 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 189 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:56:24,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1022 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:56:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132150 states. [2023-04-02 06:56:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132150 to 131960. [2023-04-02 06:56:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131960 states, 131956 states have (on average 1.561308314892843) internal successors, (206024), 131956 states have internal predecessors, (206024), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:56:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131960 states to 131960 states and 206027 transitions. [2023-04-02 06:56:39,408 INFO L78 Accepts]: Start accepts. Automaton has 131960 states and 206027 transitions. Word has length 167 [2023-04-02 06:56:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:39,409 INFO L495 AbstractCegarLoop]: Abstraction has 131960 states and 206027 transitions. [2023-04-02 06:56:39,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:56:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 131960 states and 206027 transitions. [2023-04-02 06:56:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 06:56:39,414 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:39,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:56:39,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:56:39,415 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:39,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:39,415 INFO L85 PathProgramCache]: Analyzing trace with hash 560202747, now seen corresponding path program 1 times [2023-04-02 06:56:39,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:39,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236970073] [2023-04-02 06:56:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:39,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:39,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 06:56:39,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:39,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236970073] [2023-04-02 06:56:39,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236970073] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:39,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:39,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:56:39,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901390676] [2023-04-02 06:56:39,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:39,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:56:39,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:56:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:56:39,764 INFO L87 Difference]: Start difference. First operand 131960 states and 206027 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:57:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:00,167 INFO L93 Difference]: Finished difference Result 206760 states and 323435 transitions. [2023-04-02 06:57:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:57:00,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2023-04-02 06:57:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:00,615 INFO L225 Difference]: With dead ends: 206760 [2023-04-02 06:57:00,615 INFO L226 Difference]: Without dead ends: 169155 [2023-04-02 06:57:00,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:57:00,685 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 408 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:00,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1530 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:57:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169155 states. [2023-04-02 06:57:18,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169155 to 155378. [2023-04-02 06:57:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155378 states, 155374 states have (on average 1.560743753781199) internal successors, (242499), 155374 states have internal predecessors, (242499), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:57:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155378 states to 155378 states and 242502 transitions. [2023-04-02 06:57:19,503 INFO L78 Accepts]: Start accepts. Automaton has 155378 states and 242502 transitions. Word has length 167 [2023-04-02 06:57:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:19,504 INFO L495 AbstractCegarLoop]: Abstraction has 155378 states and 242502 transitions. [2023-04-02 06:57:19,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:57:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 155378 states and 242502 transitions. [2023-04-02 06:57:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-04-02 06:57:19,532 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:19,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:19,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:57:19,532 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:19,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash -82672352, now seen corresponding path program 1 times [2023-04-02 06:57:19,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:19,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689903601] [2023-04-02 06:57:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:19,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:57:19,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:19,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689903601] [2023-04-02 06:57:19,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689903601] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:19,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:19,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:19,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560519348] [2023-04-02 06:57:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:19,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:19,923 INFO L87 Difference]: Start difference. First operand 155378 states and 242502 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)