/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:16:01,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:16:01,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:16:01,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:16:01,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:16:01,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:16:01,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:16:01,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:16:01,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:16:01,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:16:01,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:16:01,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:16:01,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:16:01,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:16:01,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:16:01,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:16:01,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:16:01,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:16:01,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:16:01,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:16:01,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:16:01,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:16:01,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:16:01,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:16:01,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:16:01,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:16:01,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:16:01,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:16:01,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:16:01,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:16:01,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:16:01,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:16:01,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:16:01,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:16:01,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:16:01,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:16:01,896 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 05:16:01,921 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:16:01,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:16:01,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:16:01,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:16:01,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:16:01,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:16:01,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:16:01,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:16:01,923 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:16:01,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:16:01,923 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:16:01,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:16:01,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:16:01,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:16:01,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:16:01,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:16:01,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:16:01,924 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:16:01,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:16:01,924 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:16:01,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:16:01,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:16:01,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:16:01,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:16:01,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:16:01,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:16:01,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:16:01,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:16:01,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:16:01,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:16:01,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:16:01,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:16:01,926 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:16:01,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:16:01,926 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:16:01,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:16:02,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:16:02,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:16:02,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:16:02,165 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:16:02,165 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:16:02,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2023-04-02 05:16:03,444 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:16:03,631 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:16:03,631 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2023-04-02 05:16:03,639 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ddb0842b/ce76925094c949d686c5fe6cf6830a0a/FLAGc1a794b6e [2023-04-02 05:16:03,654 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ddb0842b/ce76925094c949d686c5fe6cf6830a0a [2023-04-02 05:16:03,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:16:03,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:16:03,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:16:03,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:16:03,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:16:03,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4077c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03, skipping insertion in model container [2023-04-02 05:16:03,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:16:03,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:16:03,879 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2023-04-02 05:16:03,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:16:03,893 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:16:03,930 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2023-04-02 05:16:03,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:16:03,944 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:16:03,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03 WrapperNode [2023-04-02 05:16:03,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:16:03,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:16:03,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:16:03,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:16:03,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,983 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:16:03,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:16:03,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:16:03,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:16:03,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (1/1) ... [2023-04-02 05:16:03,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:16:04,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:04,026 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 05:16:04,038 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 05:16:04,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:16:04,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:16:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:16:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:16:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:16:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:16:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:16:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:16:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:16:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:16:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:16:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:16:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:16:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:16:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:16:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:16:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:16:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:16:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:16:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:16:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:16:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:16:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:16:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:16:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:16:04,174 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:16:04,186 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:16:04,686 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:16:04,701 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:16:04,702 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:16:04,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:16:04 BoogieIcfgContainer [2023-04-02 05:16:04,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:16:04,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:16:04,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:16:04,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:16:04,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:16:03" (1/3) ... [2023-04-02 05:16:04,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7421cd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:16:04, skipping insertion in model container [2023-04-02 05:16:04,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:16:03" (2/3) ... [2023-04-02 05:16:04,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7421cd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:16:04, skipping insertion in model container [2023-04-02 05:16:04,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:16:04" (3/3) ... [2023-04-02 05:16:04,713 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2023-04-02 05:16:04,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:16:04,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:16:04,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:16:04,779 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;@261ebd1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:16:04,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:16:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 79 states have (on average 1.620253164556962) internal successors, (128), 80 states have internal predecessors, (128), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 05:16:04,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-02 05:16:04,793 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:04,794 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] [2023-04-02 05:16:04,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:04,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2106132907, now seen corresponding path program 1 times [2023-04-02 05:16:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:04,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122000412] [2023-04-02 05:16:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 05:16:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 05:16:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 05:16:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:16:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 05:16:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,483 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 05:16:05,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:05,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122000412] [2023-04-02 05:16:05,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122000412] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:05,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:05,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 05:16:05,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532940647] [2023-04-02 05:16:05,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:05,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 05:16:05,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 05:16:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 05:16:05,541 INFO L87 Difference]: Start difference. First operand has 99 states, 79 states have (on average 1.620253164556962) internal successors, (128), 80 states have internal predecessors, (128), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:06,115 INFO L93 Difference]: Finished difference Result 162 states and 233 transitions. [2023-04-02 05:16:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:16:06,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-04-02 05:16:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:06,125 INFO L225 Difference]: With dead ends: 162 [2023-04-02 05:16:06,125 INFO L226 Difference]: Without dead ends: 94 [2023-04-02 05:16:06,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:16:06,131 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 404 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:06,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 79 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:16:06,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-04-02 05:16:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-04-02 05:16:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.5921052631578947) internal successors, (121), 76 states have internal predecessors, (121), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:16:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 138 transitions. [2023-04-02 05:16:06,203 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 138 transitions. Word has length 48 [2023-04-02 05:16:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:06,204 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 138 transitions. [2023-04-02 05:16:06,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 138 transitions. [2023-04-02 05:16:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-02 05:16:06,209 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:06,209 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] [2023-04-02 05:16:06,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:16:06,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:06,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:06,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1262127405, now seen corresponding path program 1 times [2023-04-02 05:16:06,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:06,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128777094] [2023-04-02 05:16:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:06,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 05:16:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 05:16:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 05:16:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:16:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 05:16:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,646 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 05:16:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128777094] [2023-04-02 05:16:06,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128777094] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:06,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:06,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:16:06,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197124768] [2023-04-02 05:16:06,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:06,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:16:06,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:06,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:16:06,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:16:06,653 INFO L87 Difference]: Start difference. First operand 94 states and 138 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:07,459 INFO L93 Difference]: Finished difference Result 167 states and 238 transitions. [2023-04-02 05:16:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:16:07,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-04-02 05:16:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:07,462 INFO L225 Difference]: With dead ends: 167 [2023-04-02 05:16:07,462 INFO L226 Difference]: Without dead ends: 104 [2023-04-02 05:16:07,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:16:07,464 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 271 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:07,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 101 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:16:07,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-04-02 05:16:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2023-04-02 05:16:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 76 states have internal predecessors, (98), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:16:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2023-04-02 05:16:07,486 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 48 [2023-04-02 05:16:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:07,487 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2023-04-02 05:16:07,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2023-04-02 05:16:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 05:16:07,489 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:07,489 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] [2023-04-02 05:16:07,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:16:07,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:07,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1112853902, now seen corresponding path program 1 times [2023-04-02 05:16:07,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:07,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114861102] [2023-04-02 05:16:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:07,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:07,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,029 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 05:16:08,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:08,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114861102] [2023-04-02 05:16:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114861102] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:08,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:08,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:16:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852674678] [2023-04-02 05:16:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:08,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:16:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:16:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:16:08,032 INFO L87 Difference]: Start difference. First operand 94 states and 115 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:13,350 INFO L93 Difference]: Finished difference Result 795 states and 1109 transitions. [2023-04-02 05:16:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-04-02 05:16:13,351 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2023-04-02 05:16:13,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:13,358 INFO L225 Difference]: With dead ends: 795 [2023-04-02 05:16:13,358 INFO L226 Difference]: Without dead ends: 738 [2023-04-02 05:16:13,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2023-04-02 05:16:13,363 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1415 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:13,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 301 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 05:16:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-04-02 05:16:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 385. [2023-04-02 05:16:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 299 states have (on average 1.394648829431438) internal successors, (417), 307 states have internal predecessors, (417), 39 states have call successors, (39), 39 states have call predecessors, (39), 46 states have return successors, (66), 38 states have call predecessors, (66), 38 states have call successors, (66) [2023-04-02 05:16:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 522 transitions. [2023-04-02 05:16:13,462 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 522 transitions. Word has length 70 [2023-04-02 05:16:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:13,462 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 522 transitions. [2023-04-02 05:16:13,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 522 transitions. [2023-04-02 05:16:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 05:16:13,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:13,465 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] [2023-04-02 05:16:13,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:16:13,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:13,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1468816994, now seen corresponding path program 1 times [2023-04-02 05:16:13,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:13,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946443027] [2023-04-02 05:16:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:13,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:13,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:13,705 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 05:16:13,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:13,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946443027] [2023-04-02 05:16:13,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946443027] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:13,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:13,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:16:13,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855805599] [2023-04-02 05:16:13,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:13,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:16:13,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:13,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:16:13,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:16:13,712 INFO L87 Difference]: Start difference. First operand 385 states and 522 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 05:16:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:14,485 INFO L93 Difference]: Finished difference Result 1041 states and 1448 transitions. [2023-04-02 05:16:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 05:16:14,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2023-04-02 05:16:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:14,493 INFO L225 Difference]: With dead ends: 1041 [2023-04-02 05:16:14,493 INFO L226 Difference]: Without dead ends: 693 [2023-04-02 05:16:14,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:16:14,496 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 326 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:14,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 96 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-04-02 05:16:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2023-04-02 05:16:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 527 states have (on average 1.3833017077798861) internal successors, (729), 541 states have internal predecessors, (729), 75 states have call successors, (75), 75 states have call predecessors, (75), 88 states have return successors, (140), 74 states have call predecessors, (140), 74 states have call successors, (140) [2023-04-02 05:16:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 944 transitions. [2023-04-02 05:16:14,589 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 944 transitions. Word has length 72 [2023-04-02 05:16:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:14,591 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 944 transitions. [2023-04-02 05:16:14,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 05:16:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 944 transitions. [2023-04-02 05:16:14,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 05:16:14,599 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:14,600 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] [2023-04-02 05:16:14,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:16:14,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:14,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 181114538, now seen corresponding path program 1 times [2023-04-02 05:16:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032764544] [2023-04-02 05:16:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,245 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 05:16:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032764544] [2023-04-02 05:16:15,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032764544] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:15,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:15,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:16:15,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251635212] [2023-04-02 05:16:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:15,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:16:15,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:16:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:16:15,249 INFO L87 Difference]: Start difference. First operand 691 states and 944 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:20,547 INFO L93 Difference]: Finished difference Result 2306 states and 3226 transitions. [2023-04-02 05:16:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-04-02 05:16:20,548 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-04-02 05:16:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:20,555 INFO L225 Difference]: With dead ends: 2306 [2023-04-02 05:16:20,555 INFO L226 Difference]: Without dead ends: 1652 [2023-04-02 05:16:20,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2769 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1485, Invalid=6705, Unknown=0, NotChecked=0, Total=8190 [2023-04-02 05:16:20,560 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1408 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:20,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 293 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 05:16:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2023-04-02 05:16:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1601. [2023-04-02 05:16:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1222 states have (on average 1.4075286415711947) internal successors, (1720), 1247 states have internal predecessors, (1720), 177 states have call successors, (177), 177 states have call predecessors, (177), 201 states have return successors, (345), 176 states have call predecessors, (345), 176 states have call successors, (345) [2023-04-02 05:16:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2242 transitions. [2023-04-02 05:16:20,775 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2242 transitions. Word has length 72 [2023-04-02 05:16:20,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:20,776 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2242 transitions. [2023-04-02 05:16:20,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2242 transitions. [2023-04-02 05:16:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 05:16:20,778 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:20,778 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] [2023-04-02 05:16:20,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:16:20,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:20,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1278725278, now seen corresponding path program 1 times [2023-04-02 05:16:20,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:20,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208913618] [2023-04-02 05:16:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:20,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:20,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:21,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:21,037 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 05:16:21,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208913618] [2023-04-02 05:16:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208913618] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:21,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:21,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:16:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334226202] [2023-04-02 05:16:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:21,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:16:21,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:16:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:16:21,039 INFO L87 Difference]: Start difference. First operand 1601 states and 2242 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:22,257 INFO L93 Difference]: Finished difference Result 3694 states and 5191 transitions. [2023-04-02 05:16:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:16:22,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2023-04-02 05:16:22,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:22,273 INFO L225 Difference]: With dead ends: 3694 [2023-04-02 05:16:22,274 INFO L226 Difference]: Without dead ends: 2130 [2023-04-02 05:16:22,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2023-04-02 05:16:22,281 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 718 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:22,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 99 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2023-04-02 05:16:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 2126. [2023-04-02 05:16:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1611 states have (on average 1.399130974549969) internal successors, (2254), 1654 states have internal predecessors, (2254), 236 states have call successors, (236), 236 states have call predecessors, (236), 278 states have return successors, (471), 235 states have call predecessors, (471), 235 states have call successors, (471) [2023-04-02 05:16:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 2961 transitions. [2023-04-02 05:16:22,591 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 2961 transitions. Word has length 73 [2023-04-02 05:16:22,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:22,591 INFO L495 AbstractCegarLoop]: Abstraction has 2126 states and 2961 transitions. [2023-04-02 05:16:22,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 2961 transitions. [2023-04-02 05:16:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 05:16:22,593 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:22,593 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] [2023-04-02 05:16:22,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:16:22,594 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:22,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:22,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1368817057, now seen corresponding path program 1 times [2023-04-02 05:16:22,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:22,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473609893] [2023-04-02 05:16:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:23,099 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 05:16:23,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:23,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473609893] [2023-04-02 05:16:23,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473609893] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:23,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:23,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-02 05:16:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679231503] [2023-04-02 05:16:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:23,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 05:16:23,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 05:16:23,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:16:23,101 INFO L87 Difference]: Start difference. First operand 2126 states and 2961 transitions. Second operand has 17 states, 16 states have (on average 3.5625) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 05:16:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:24,710 INFO L93 Difference]: Finished difference Result 2322 states and 3367 transitions. [2023-04-02 05:16:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:16:24,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2023-04-02 05:16:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:24,724 INFO L225 Difference]: With dead ends: 2322 [2023-04-02 05:16:24,724 INFO L226 Difference]: Without dead ends: 2320 [2023-04-02 05:16:24,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:16:24,727 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 186 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:24,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 284 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:16:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2023-04-02 05:16:25,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2162. [2023-04-02 05:16:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 1635 states have (on average 1.3889908256880734) internal successors, (2271), 1682 states have internal predecessors, (2271), 240 states have call successors, (240), 240 states have call predecessors, (240), 286 states have return successors, (483), 239 states have call predecessors, (483), 239 states have call successors, (483) [2023-04-02 05:16:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 2994 transitions. [2023-04-02 05:16:25,064 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 2994 transitions. Word has length 73 [2023-04-02 05:16:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:25,065 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 2994 transitions. [2023-04-02 05:16:25,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5625) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 05:16:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 2994 transitions. [2023-04-02 05:16:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 05:16:25,070 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:25,071 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] [2023-04-02 05:16:25,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:16:25,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:25,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1672257978, now seen corresponding path program 1 times [2023-04-02 05:16:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178407314] [2023-04-02 05:16:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:25,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:16:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:16:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:16:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:25,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:16:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:25,383 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 05:16:25,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178407314] [2023-04-02 05:16:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178407314] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:25,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:16:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874624839] [2023-04-02 05:16:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:25,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:16:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:16:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:16:25,385 INFO L87 Difference]: Start difference. First operand 2162 states and 2994 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 05:16:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:27,117 INFO L93 Difference]: Finished difference Result 4341 states and 6062 transitions. [2023-04-02 05:16:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:16:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-04-02 05:16:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:27,132 INFO L225 Difference]: With dead ends: 4341 [2023-04-02 05:16:27,132 INFO L226 Difference]: Without dead ends: 2717 [2023-04-02 05:16:27,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-04-02 05:16:27,139 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 863 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:27,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 76 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2023-04-02 05:16:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2417. [2023-04-02 05:16:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 1829 states have (on average 1.4007654455986878) internal successors, (2562), 1888 states have internal predecessors, (2562), 265 states have call successors, (265), 265 states have call predecessors, (265), 322 states have return successors, (536), 263 states have call predecessors, (536), 264 states have call successors, (536) [2023-04-02 05:16:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3363 transitions. [2023-04-02 05:16:27,494 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3363 transitions. Word has length 74 [2023-04-02 05:16:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:27,494 INFO L495 AbstractCegarLoop]: Abstraction has 2417 states and 3363 transitions. [2023-04-02 05:16:27,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 05:16:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3363 transitions. [2023-04-02 05:16:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 05:16:27,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:27,497 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] [2023-04-02 05:16:27,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:16:27,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:27,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:27,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1118865834, now seen corresponding path program 1 times [2023-04-02 05:16:27,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:27,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402998214] [2023-04-02 05:16:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:16:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:16:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:27,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:16:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:27,819 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 05:16:27,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402998214] [2023-04-02 05:16:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402998214] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:27,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:27,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:16:27,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082136527] [2023-04-02 05:16:27,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:27,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:16:27,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:16:27,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:16:27,821 INFO L87 Difference]: Start difference. First operand 2417 states and 3363 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 05:16:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:29,464 INFO L93 Difference]: Finished difference Result 5898 states and 8177 transitions. [2023-04-02 05:16:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:16:29,464 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-04-02 05:16:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:29,481 INFO L225 Difference]: With dead ends: 5898 [2023-04-02 05:16:29,481 INFO L226 Difference]: Without dead ends: 3524 [2023-04-02 05:16:29,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-04-02 05:16:29,489 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 703 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:29,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 77 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2023-04-02 05:16:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 2428. [2023-04-02 05:16:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1836 states have (on average 1.3992374727668846) internal successors, (2569), 1897 states have internal predecessors, (2569), 266 states have call successors, (266), 266 states have call predecessors, (266), 325 states have return successors, (538), 264 states have call predecessors, (538), 265 states have call successors, (538) [2023-04-02 05:16:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3373 transitions. [2023-04-02 05:16:29,972 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3373 transitions. Word has length 74 [2023-04-02 05:16:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:29,972 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 3373 transitions. [2023-04-02 05:16:29,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 05:16:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3373 transitions. [2023-04-02 05:16:29,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 05:16:29,975 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:29,975 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] [2023-04-02 05:16:29,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:16:29,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:29,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:29,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1637994938, now seen corresponding path program 1 times [2023-04-02 05:16:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:29,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360432136] [2023-04-02 05:16:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:29,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:30,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:30,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:30,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:16:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:30,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:16:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:30,294 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 05:16:30,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360432136] [2023-04-02 05:16:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360432136] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:30,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:16:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288003301] [2023-04-02 05:16:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:16:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:16:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:16:30,295 INFO L87 Difference]: Start difference. First operand 2428 states and 3373 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 05:16:31,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:31,916 INFO L93 Difference]: Finished difference Result 5465 states and 7534 transitions. [2023-04-02 05:16:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:16:31,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-04-02 05:16:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:31,933 INFO L225 Difference]: With dead ends: 5465 [2023-04-02 05:16:31,933 INFO L226 Difference]: Without dead ends: 3100 [2023-04-02 05:16:31,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-04-02 05:16:31,941 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 841 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:31,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 76 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:31,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2023-04-02 05:16:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2458. [2023-04-02 05:16:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2458 states, 1858 states have (on average 1.3988159311087192) internal successors, (2599), 1921 states have internal predecessors, (2599), 269 states have call successors, (269), 269 states have call predecessors, (269), 330 states have return successors, (545), 267 states have call predecessors, (545), 268 states have call successors, (545) [2023-04-02 05:16:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2458 states to 2458 states and 3413 transitions. [2023-04-02 05:16:32,287 INFO L78 Accepts]: Start accepts. Automaton has 2458 states and 3413 transitions. Word has length 74 [2023-04-02 05:16:32,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:32,288 INFO L495 AbstractCegarLoop]: Abstraction has 2458 states and 3413 transitions. [2023-04-02 05:16:32,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 05:16:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2458 states and 3413 transitions. [2023-04-02 05:16:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 05:16:32,289 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:32,289 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] [2023-04-02 05:16:32,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:16:32,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:32,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1129175850, now seen corresponding path program 1 times [2023-04-02 05:16:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42952993] [2023-04-02 05:16:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:32,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:32,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:32,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:16:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:32,615 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 05:16:32,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:32,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42952993] [2023-04-02 05:16:32,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42952993] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:32,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:32,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:16:32,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981908192] [2023-04-02 05:16:32,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:32,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:16:32,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:32,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:16:32,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:16:32,618 INFO L87 Difference]: Start difference. First operand 2458 states and 3413 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 05:16:34,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:34,413 INFO L93 Difference]: Finished difference Result 5106 states and 7006 transitions. [2023-04-02 05:16:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:16:34,413 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-04-02 05:16:34,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:34,426 INFO L225 Difference]: With dead ends: 5106 [2023-04-02 05:16:34,426 INFO L226 Difference]: Without dead ends: 2729 [2023-04-02 05:16:34,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2023-04-02 05:16:34,433 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 723 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:34,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 72 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2023-04-02 05:16:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2464. [2023-04-02 05:16:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1863 states have (on average 1.3977455716586151) internal successors, (2604), 1925 states have internal predecessors, (2604), 270 states have call successors, (270), 270 states have call predecessors, (270), 330 states have return successors, (545), 268 states have call predecessors, (545), 269 states have call successors, (545) [2023-04-02 05:16:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3419 transitions. [2023-04-02 05:16:34,791 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3419 transitions. Word has length 74 [2023-04-02 05:16:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:34,791 INFO L495 AbstractCegarLoop]: Abstraction has 2464 states and 3419 transitions. [2023-04-02 05:16:34,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 05:16:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3419 transitions. [2023-04-02 05:16:34,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 05:16:34,793 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:34,793 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] [2023-04-02 05:16:34,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:16:34,794 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:34,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:34,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2014678484, now seen corresponding path program 1 times [2023-04-02 05:16:34,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:34,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638249146] [2023-04-02 05:16:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:34,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:16:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:16:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,109 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 05:16:35,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:35,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638249146] [2023-04-02 05:16:35,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638249146] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:35,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:35,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:16:35,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318560314] [2023-04-02 05:16:35,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:35,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:16:35,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:16:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:16:35,111 INFO L87 Difference]: Start difference. First operand 2464 states and 3419 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:16:36,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:36,809 INFO L93 Difference]: Finished difference Result 5173 states and 7240 transitions. [2023-04-02 05:16:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-02 05:16:36,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 75 [2023-04-02 05:16:36,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:36,826 INFO L225 Difference]: With dead ends: 5173 [2023-04-02 05:16:36,826 INFO L226 Difference]: Without dead ends: 3381 [2023-04-02 05:16:36,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:16:36,833 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 988 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:36,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 115 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:16:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2023-04-02 05:16:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3237. [2023-04-02 05:16:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2449 states have (on average 1.3977133523887302) internal successors, (3423), 2532 states have internal predecessors, (3423), 353 states have call successors, (353), 353 states have call predecessors, (353), 434 states have return successors, (706), 351 states have call predecessors, (706), 352 states have call successors, (706) [2023-04-02 05:16:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4482 transitions. [2023-04-02 05:16:37,273 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4482 transitions. Word has length 75 [2023-04-02 05:16:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:37,273 INFO L495 AbstractCegarLoop]: Abstraction has 3237 states and 4482 transitions. [2023-04-02 05:16:37,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:16:37,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4482 transitions. [2023-04-02 05:16:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-02 05:16:37,276 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:37,276 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, 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] [2023-04-02 05:16:37,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:16:37,277 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:37,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1976511931, now seen corresponding path program 1 times [2023-04-02 05:16:37,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:37,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109223526] [2023-04-02 05:16:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:37,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:16:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:16:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:16:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:16:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:16:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 05:16:37,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:37,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109223526] [2023-04-02 05:16:37,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109223526] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:37,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320307957] [2023-04-02 05:16:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:37,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:37,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:37,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:37,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:16:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 05:16:37,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 05:16:38,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:16:38,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320307957] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:38,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:16:38,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2023-04-02 05:16:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534045466] [2023-04-02 05:16:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:16:38,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:16:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2023-04-02 05:16:38,705 INFO L87 Difference]: Start difference. First operand 3237 states and 4482 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 4 states have call successors, (14), 10 states have call predecessors, (14), 10 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:16:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:39,979 INFO L93 Difference]: Finished difference Result 5594 states and 7802 transitions. [2023-04-02 05:16:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 05:16:39,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 4 states have call successors, (14), 10 states have call predecessors, (14), 10 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2023-04-02 05:16:39,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:40,003 INFO L225 Difference]: With dead ends: 5594 [2023-04-02 05:16:40,003 INFO L226 Difference]: Without dead ends: 4953 [2023-04-02 05:16:40,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:16:40,008 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 708 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:40,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 394 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:16:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2023-04-02 05:16:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4945. [2023-04-02 05:16:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 3744 states have (on average 1.4030448717948718) internal successors, (5253), 3858 states have internal predecessors, (5253), 544 states have call successors, (544), 544 states have call predecessors, (544), 656 states have return successors, (1095), 542 states have call predecessors, (1095), 543 states have call successors, (1095) [2023-04-02 05:16:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 6892 transitions. [2023-04-02 05:16:40,564 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 6892 transitions. Word has length 112 [2023-04-02 05:16:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:40,565 INFO L495 AbstractCegarLoop]: Abstraction has 4945 states and 6892 transitions. [2023-04-02 05:16:40,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 4 states have call successors, (14), 10 states have call predecessors, (14), 10 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:16:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 6892 transitions. [2023-04-02 05:16:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-02 05:16:40,567 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:40,568 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, 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] [2023-04-02 05:16:40,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 05:16:40,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 05:16:40,775 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:40,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1765063221, now seen corresponding path program 1 times [2023-04-02 05:16:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:40,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579697677] [2023-04-02 05:16:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:40,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:16:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:16:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:16:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:16:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:16:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 05:16:41,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579697677] [2023-04-02 05:16:41,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579697677] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183868100] [2023-04-02 05:16:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:41,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:41,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:41,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:41,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:16:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:41,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 05:16:41,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:16:42,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:16:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183868100] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:42,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:16:42,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 26 [2023-04-02 05:16:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858604304] [2023-04-02 05:16:42,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:42,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:16:42,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:16:42,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:16:42,041 INFO L87 Difference]: Start difference. First operand 4945 states and 6892 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:16:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:43,361 INFO L93 Difference]: Finished difference Result 7999 states and 11166 transitions. [2023-04-02 05:16:43,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 05:16:43,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2023-04-02 05:16:43,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:43,383 INFO L225 Difference]: With dead ends: 7999 [2023-04-02 05:16:43,384 INFO L226 Difference]: Without dead ends: 6444 [2023-04-02 05:16:43,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:16:43,390 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 558 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:43,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 364 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:16:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6444 states. [2023-04-02 05:16:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6444 to 6424. [2023-04-02 05:16:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6424 states, 4866 states have (on average 1.4038224414303329) internal successors, (6831), 5011 states have internal predecessors, (6831), 707 states have call successors, (707), 707 states have call predecessors, (707), 850 states have return successors, (1426), 705 states have call predecessors, (1426), 706 states have call successors, (1426) [2023-04-02 05:16:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6424 states to 6424 states and 8964 transitions. [2023-04-02 05:16:44,175 INFO L78 Accepts]: Start accepts. Automaton has 6424 states and 8964 transitions. Word has length 112 [2023-04-02 05:16:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:44,176 INFO L495 AbstractCegarLoop]: Abstraction has 6424 states and 8964 transitions. [2023-04-02 05:16:44,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:16:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 6424 states and 8964 transitions. [2023-04-02 05:16:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-02 05:16:44,179 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:44,179 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, 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] [2023-04-02 05:16:44,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 05:16:44,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-02 05:16:44,386 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:44,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:44,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2010774971, now seen corresponding path program 1 times [2023-04-02 05:16:44,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686391898] [2023-04-02 05:16:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:44,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:16:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:16:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:16:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:16:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:16:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 05:16:44,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:44,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686391898] [2023-04-02 05:16:44,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686391898] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:44,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776712771] [2023-04-02 05:16:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:44,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:44,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:44,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:44,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:16:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:44,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 05:16:44,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:16:45,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:16:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776712771] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:45,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:16:45,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2023-04-02 05:16:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949584959] [2023-04-02 05:16:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:45,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:16:45,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:16:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-04-02 05:16:45,473 INFO L87 Difference]: Start difference. First operand 6424 states and 8964 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:16:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:46,517 INFO L93 Difference]: Finished difference Result 10157 states and 14192 transitions. [2023-04-02 05:16:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 05:16:46,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2023-04-02 05:16:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:46,543 INFO L225 Difference]: With dead ends: 10157 [2023-04-02 05:16:46,544 INFO L226 Difference]: Without dead ends: 7052 [2023-04-02 05:16:46,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:16:46,554 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 655 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:46,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 240 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:16:46,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7052 states. [2023-04-02 05:16:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7052 to 7046. [2023-04-02 05:16:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7046 states, 5340 states have (on average 1.4037453183520598) internal successors, (7496), 5495 states have internal predecessors, (7496), 776 states have call successors, (776), 776 states have call predecessors, (776), 929 states have return successors, (1564), 774 states have call predecessors, (1564), 775 states have call successors, (1564) [2023-04-02 05:16:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 9836 transitions. [2023-04-02 05:16:47,408 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 9836 transitions. Word has length 112 [2023-04-02 05:16:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:47,409 INFO L495 AbstractCegarLoop]: Abstraction has 7046 states and 9836 transitions. [2023-04-02 05:16:47,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:16:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 9836 transitions. [2023-04-02 05:16:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-02 05:16:47,412 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:47,412 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, 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] [2023-04-02 05:16:47,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 05:16:47,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:47,618 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:47,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:47,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1775373237, now seen corresponding path program 1 times [2023-04-02 05:16:47,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:47,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588376507] [2023-04-02 05:16:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:47,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:16:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:16:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:16:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:16:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:16:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 05:16:48,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:48,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588376507] [2023-04-02 05:16:48,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588376507] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:48,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:48,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:16:48,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593974697] [2023-04-02 05:16:48,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:48,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:16:48,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:16:48,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:16:48,102 INFO L87 Difference]: Start difference. First operand 7046 states and 9836 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 11 states have internal predecessors, (72), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:16:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:54,486 INFO L93 Difference]: Finished difference Result 14789 states and 20792 transitions. [2023-04-02 05:16:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-04-02 05:16:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 11 states have internal predecessors, (72), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 112 [2023-04-02 05:16:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:54,514 INFO L225 Difference]: With dead ends: 14789 [2023-04-02 05:16:54,514 INFO L226 Difference]: Without dead ends: 9719 [2023-04-02 05:16:54,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4125 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1809, Invalid=9747, Unknown=0, NotChecked=0, Total=11556 [2023-04-02 05:16:54,533 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1138 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3801 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 3921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:54,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 413 Invalid, 3921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3801 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 05:16:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9719 states. [2023-04-02 05:16:55,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9719 to 9511. [2023-04-02 05:16:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9511 states, 7208 states have (on average 1.4014983351831298) internal successors, (10102), 7398 states have internal predecessors, (10102), 1057 states have call successors, (1057), 1057 states have call predecessors, (1057), 1245 states have return successors, (2117), 1055 states have call predecessors, (2117), 1056 states have call successors, (2117) [2023-04-02 05:16:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9511 states to 9511 states and 13276 transitions. [2023-04-02 05:16:55,758 INFO L78 Accepts]: Start accepts. Automaton has 9511 states and 13276 transitions. Word has length 112 [2023-04-02 05:16:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:55,758 INFO L495 AbstractCegarLoop]: Abstraction has 9511 states and 13276 transitions. [2023-04-02 05:16:55,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 11 states have internal predecessors, (72), 4 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:16:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 9511 states and 13276 transitions. [2023-04-02 05:16:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 05:16:55,761 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:55,762 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, 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] [2023-04-02 05:16:55,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:16:55,762 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:55,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:55,762 INFO L85 PathProgramCache]: Analyzing trace with hash -865563203, now seen corresponding path program 1 times [2023-04-02 05:16:55,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:55,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458651238] [2023-04-02 05:16:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:55,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:16:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:16:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:16:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:16:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:16:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:55,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:16:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:56,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:16:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:16:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:16:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 05:16:56,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:56,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458651238] [2023-04-02 05:16:56,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458651238] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:56,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407643644] [2023-04-02 05:16:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:56,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:56,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:56,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:56,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 05:16:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:56,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:16:56,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:56,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:16:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:16:56,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407643644] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:16:56,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:16:56,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 20 [2023-04-02 05:16:56,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145934914] [2023-04-02 05:16:56,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:16:56,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 05:16:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 05:16:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:16:56,576 INFO L87 Difference]: Start difference. First operand 9511 states and 13276 transitions. Second operand has 20 states, 19 states have (on average 7.368421052631579) internal successors, (140), 14 states have internal predecessors, (140), 7 states have call successors, (36), 13 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-04-02 05:17:01,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:01,430 INFO L93 Difference]: Finished difference Result 30083 states and 42389 transitions. [2023-04-02 05:17:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:17:01,430 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 7.368421052631579) internal successors, (140), 14 states have internal predecessors, (140), 7 states have call successors, (36), 13 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 114 [2023-04-02 05:17:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:01,507 INFO L225 Difference]: With dead ends: 30083 [2023-04-02 05:17:01,508 INFO L226 Difference]: Without dead ends: 20655 [2023-04-02 05:17:01,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=575, Invalid=1975, Unknown=0, NotChecked=0, Total=2550 [2023-04-02 05:17:01,534 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 955 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:01,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 157 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:17:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20655 states. [2023-04-02 05:17:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20655 to 18274. [2023-04-02 05:17:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18274 states, 13707 states have (on average 1.347121908513898) internal successors, (18465), 14039 states have internal predecessors, (18465), 2118 states have call successors, (2118), 2118 states have call predecessors, (2118), 2448 states have return successors, (4419), 2116 states have call predecessors, (4419), 2117 states have call successors, (4419) [2023-04-02 05:17:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18274 states to 18274 states and 25002 transitions. [2023-04-02 05:17:03,994 INFO L78 Accepts]: Start accepts. Automaton has 18274 states and 25002 transitions. Word has length 114 [2023-04-02 05:17:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:03,994 INFO L495 AbstractCegarLoop]: Abstraction has 18274 states and 25002 transitions. [2023-04-02 05:17:03,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 7.368421052631579) internal successors, (140), 14 states have internal predecessors, (140), 7 states have call successors, (36), 13 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-04-02 05:17:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 18274 states and 25002 transitions. [2023-04-02 05:17:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 05:17:03,999 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:03,999 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, 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] [2023-04-02 05:17:04,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 05:17:04,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-02 05:17:04,206 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:04,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash 291354123, now seen corresponding path program 1 times [2023-04-02 05:17:04,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:04,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329195096] [2023-04-02 05:17:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:17:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:17:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:17:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:17:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:17:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:17:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:17:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:17:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 05:17:04,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329195096] [2023-04-02 05:17:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329195096] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:17:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735173524] [2023-04-02 05:17:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:04,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:04,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:17:04,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:17:04,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 05:17:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:04,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:17:04,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:17:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:04,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:17:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:17:05,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735173524] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:17:05,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:17:05,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 20 [2023-04-02 05:17:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081461090] [2023-04-02 05:17:05,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:17:05,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 05:17:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 05:17:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:17:05,009 INFO L87 Difference]: Start difference. First operand 18274 states and 25002 transitions. Second operand has 20 states, 19 states have (on average 7.631578947368421) internal successors, (145), 14 states have internal predecessors, (145), 7 states have call successors, (36), 14 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-04-02 05:17:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:11,320 INFO L93 Difference]: Finished difference Result 52134 states and 72238 transitions. [2023-04-02 05:17:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-02 05:17:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 7.631578947368421) internal successors, (145), 14 states have internal predecessors, (145), 7 states have call successors, (36), 14 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 116 [2023-04-02 05:17:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:11,524 INFO L225 Difference]: With dead ends: 52134 [2023-04-02 05:17:11,524 INFO L226 Difference]: Without dead ends: 35726 [2023-04-02 05:17:11,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=590, Invalid=2062, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:17:11,561 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1036 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:11,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 152 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:17:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35726 states. [2023-04-02 05:17:15,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35726 to 33610. [2023-04-02 05:17:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33610 states, 24905 states have (on average 1.3146757679180887) internal successors, (32742), 25505 states have internal predecessors, (32742), 4053 states have call successors, (4053), 4053 states have call predecessors, (4053), 4651 states have return successors, (8774), 4051 states have call predecessors, (8774), 4052 states have call successors, (8774) [2023-04-02 05:17:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33610 states to 33610 states and 45569 transitions. [2023-04-02 05:17:15,859 INFO L78 Accepts]: Start accepts. Automaton has 33610 states and 45569 transitions. Word has length 116 [2023-04-02 05:17:15,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:15,860 INFO L495 AbstractCegarLoop]: Abstraction has 33610 states and 45569 transitions. [2023-04-02 05:17:15,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 7.631578947368421) internal successors, (145), 14 states have internal predecessors, (145), 7 states have call successors, (36), 14 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-04-02 05:17:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 33610 states and 45569 transitions. [2023-04-02 05:17:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-02 05:17:15,866 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:15,866 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, 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] [2023-04-02 05:17:15,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 05:17:16,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-02 05:17:16,073 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:16,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1231683133, now seen corresponding path program 1 times [2023-04-02 05:17:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:16,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951521803] [2023-04-02 05:17:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:16,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:17:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:17:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:17:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:17:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:17:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:17:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:17:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:17:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 05:17:16,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:16,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951521803] [2023-04-02 05:17:16,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951521803] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:17:16,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653434190] [2023-04-02 05:17:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:16,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:16,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:17:16,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:17:16,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 05:17:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:16,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:17:16,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:17:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:16,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:17:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:17:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653434190] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:17:16,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:17:16,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 20 [2023-04-02 05:17:16,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831067367] [2023-04-02 05:17:16,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:17:16,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 05:17:16,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:16,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 05:17:16,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:17:16,857 INFO L87 Difference]: Start difference. First operand 33610 states and 45569 transitions. Second operand has 20 states, 19 states have (on average 7.894736842105263) internal successors, (150), 14 states have internal predecessors, (150), 7 states have call successors, (36), 14 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-04-02 05:17:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:26,892 INFO L93 Difference]: Finished difference Result 95332 states and 131068 transitions. [2023-04-02 05:17:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-02 05:17:26,893 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 7.894736842105263) internal successors, (150), 14 states have internal predecessors, (150), 7 states have call successors, (36), 14 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 118 [2023-04-02 05:17:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:27,186 INFO L225 Difference]: With dead ends: 95332 [2023-04-02 05:17:27,186 INFO L226 Difference]: Without dead ends: 65425 [2023-04-02 05:17:27,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=605, Invalid=2151, Unknown=0, NotChecked=0, Total=2756 [2023-04-02 05:17:27,273 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1555 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:27,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 151 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:17:27,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65425 states. [2023-04-02 05:17:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65425 to 60995. [2023-04-02 05:17:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60995 states, 44550 states have (on average 1.276408529741863) internal successors, (56864), 45615 states have internal predecessors, (56864), 7691 states have call successors, (7691), 7690 states have call predecessors, (7691), 8753 states have return successors, (17243), 7689 states have call predecessors, (17243), 7690 states have call successors, (17243) [2023-04-02 05:17:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60995 states to 60995 states and 81798 transitions. [2023-04-02 05:17:35,668 INFO L78 Accepts]: Start accepts. Automaton has 60995 states and 81798 transitions. Word has length 118 [2023-04-02 05:17:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:35,669 INFO L495 AbstractCegarLoop]: Abstraction has 60995 states and 81798 transitions. [2023-04-02 05:17:35,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 7.894736842105263) internal successors, (150), 14 states have internal predecessors, (150), 7 states have call successors, (36), 14 states have call predecessors, (36), 10 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-04-02 05:17:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 60995 states and 81798 transitions. [2023-04-02 05:17:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 05:17:35,678 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:35,679 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, 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] [2023-04-02 05:17:35,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 05:17:35,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:35,885 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:35,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash -5178209, now seen corresponding path program 1 times [2023-04-02 05:17:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:35,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166461002] [2023-04-02 05:17:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:17:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:17:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:17:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:17:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:17:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:17:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:17:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:17:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 05:17:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166461002] [2023-04-02 05:17:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166461002] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:17:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220922243] [2023-04-02 05:17:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:36,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:17:36,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:17:36,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 05:17:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:36,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 05:17:36,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:17:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:36,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:17:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:17:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220922243] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:17:36,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:17:36,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 11] total 27 [2023-04-02 05:17:36,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478825058] [2023-04-02 05:17:36,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:17:36,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 05:17:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 05:17:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2023-04-02 05:17:36,994 INFO L87 Difference]: Start difference. First operand 60995 states and 81798 transitions. Second operand has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 22 states have internal predecessors, (194), 7 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-02 05:17:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:47,752 INFO L93 Difference]: Finished difference Result 127632 states and 171822 transitions. [2023-04-02 05:17:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-02 05:17:47,753 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 22 states have internal predecessors, (194), 7 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) Word has length 120 [2023-04-02 05:17:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:47,989 INFO L225 Difference]: With dead ends: 127632 [2023-04-02 05:17:47,989 INFO L226 Difference]: Without dead ends: 67453 [2023-04-02 05:17:48,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 255 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=714, Invalid=2148, Unknown=0, NotChecked=0, Total=2862 [2023-04-02 05:17:48,079 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1042 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:48,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 129 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:17:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67453 states. [2023-04-02 05:17:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67453 to 66436. [2023-04-02 05:17:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66436 states, 48373 states have (on average 1.2775308539887955) internal successors, (61798), 50398 states have internal predecessors, (61798), 8178 states have call successors, (8178), 7861 states have call predecessors, (8178), 9884 states have return successors, (17780), 8176 states have call predecessors, (17780), 8177 states have call successors, (17780) [2023-04-02 05:17:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66436 states to 66436 states and 87756 transitions. [2023-04-02 05:17:56,815 INFO L78 Accepts]: Start accepts. Automaton has 66436 states and 87756 transitions. Word has length 120 [2023-04-02 05:17:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:56,815 INFO L495 AbstractCegarLoop]: Abstraction has 66436 states and 87756 transitions. [2023-04-02 05:17:56,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 22 states have internal predecessors, (194), 7 states have call successors, (36), 14 states have call predecessors, (36), 13 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-02 05:17:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 66436 states and 87756 transitions. [2023-04-02 05:17:56,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 05:17:56,824 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:56,824 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, 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] [2023-04-02 05:17:56,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 05:17:57,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:57,033 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:57,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1998793077, now seen corresponding path program 1 times [2023-04-02 05:17:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415483487] [2023-04-02 05:17:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:17:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:17:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:17:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:17:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:17:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:17:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:17:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:17:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 05:17:57,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:57,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415483487] [2023-04-02 05:17:57,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415483487] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:17:57,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182868496] [2023-04-02 05:17:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:57,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:17:57,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:17:57,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 05:17:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:57,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:17:57,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:17:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:17:57,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:17:57,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182868496] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:57,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:17:57,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-02 05:17:57,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493148999] [2023-04-02 05:17:57,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:57,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:17:57,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:57,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:17:57,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:17:57,614 INFO L87 Difference]: Start difference. First operand 66436 states and 87756 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:18:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:06,031 INFO L93 Difference]: Finished difference Result 127947 states and 169384 transitions. [2023-04-02 05:18:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:18:06,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-04-02 05:18:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:06,211 INFO L225 Difference]: With dead ends: 127947 [2023-04-02 05:18:06,211 INFO L226 Difference]: Without dead ends: 61736 [2023-04-02 05:18:06,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:18:06,301 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 167 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:06,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 97 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:18:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61736 states. [2023-04-02 05:18:14,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61736 to 61734. [2023-04-02 05:18:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61734 states, 44884 states have (on average 1.267467248908297) internal successors, (56889), 46709 states have internal predecessors, (56889), 7664 states have call successors, (7664), 7362 states have call predecessors, (7664), 9185 states have return successors, (15662), 7662 states have call predecessors, (15662), 7663 states have call successors, (15662) [2023-04-02 05:18:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61734 states to 61734 states and 80215 transitions. [2023-04-02 05:18:14,629 INFO L78 Accepts]: Start accepts. Automaton has 61734 states and 80215 transitions. Word has length 120 [2023-04-02 05:18:14,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:14,629 INFO L495 AbstractCegarLoop]: Abstraction has 61734 states and 80215 transitions. [2023-04-02 05:18:14,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:18:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 61734 states and 80215 transitions. [2023-04-02 05:18:14,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 05:18:14,632 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:14,632 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, 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] [2023-04-02 05:18:14,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 05:18:14,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-04-02 05:18:14,839 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:14,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash -769131233, now seen corresponding path program 1 times [2023-04-02 05:18:14,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:14,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794463976] [2023-04-02 05:18:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:14,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:18:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:18:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:18:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:18:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:18:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:18:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:18:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:18:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:18:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 05:18:15,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794463976] [2023-04-02 05:18:15,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794463976] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670058346] [2023-04-02 05:18:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:15,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:15,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:15,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:15,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 05:18:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:15,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:18:15,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 05:18:15,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:18:15,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670058346] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:15,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:18:15,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 23 [2023-04-02 05:18:15,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218130826] [2023-04-02 05:18:15,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:15,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:18:15,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:18:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:18:15,876 INFO L87 Difference]: Start difference. First operand 61734 states and 80215 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:18:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:20,389 INFO L93 Difference]: Finished difference Result 88788 states and 115288 transitions. [2023-04-02 05:18:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:18:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2023-04-02 05:18:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:20,474 INFO L225 Difference]: With dead ends: 88788 [2023-04-02 05:18:20,475 INFO L226 Difference]: Without dead ends: 28355 [2023-04-02 05:18:20,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:18:20,539 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 147 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:20,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 95 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:18:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28355 states. [2023-04-02 05:18:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28355 to 27894. [2023-04-02 05:18:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27894 states, 20321 states have (on average 1.2319767727966144) internal successors, (25035), 20749 states have internal predecessors, (25035), 3573 states have call successors, (3573), 3573 states have call predecessors, (3573), 3999 states have return successors, (6538), 3571 states have call predecessors, (6538), 3572 states have call successors, (6538) [2023-04-02 05:18:24,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27894 states to 27894 states and 35146 transitions. [2023-04-02 05:18:24,345 INFO L78 Accepts]: Start accepts. Automaton has 27894 states and 35146 transitions. Word has length 120 [2023-04-02 05:18:24,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:24,345 INFO L495 AbstractCegarLoop]: Abstraction has 27894 states and 35146 transitions. [2023-04-02 05:18:24,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:18:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 27894 states and 35146 transitions. [2023-04-02 05:18:24,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 05:18:24,347 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:24,347 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, 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] [2023-04-02 05:18:24,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 05:18:24,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:24,548 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:24,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1210439199, now seen corresponding path program 2 times [2023-04-02 05:18:24,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:24,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041809313] [2023-04-02 05:18:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:18:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:18:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:18:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:18:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:18:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:18:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:18:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:18:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:18:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 05:18:25,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:25,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041809313] [2023-04-02 05:18:25,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041809313] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:25,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27963958] [2023-04-02 05:18:25,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 05:18:25,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:25,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:25,230 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:25,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 05:18:25,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 05:18:25,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 05:18:25,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 21 conjunts are in the unsatisfiable core [2023-04-02 05:18:25,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:26,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:18:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:18:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27963958] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:18:27,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:18:27,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 45 [2023-04-02 05:18:27,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737624549] [2023-04-02 05:18:27,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:18:27,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-04-02 05:18:27,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:27,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-04-02 05:18:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 05:18:27,921 INFO L87 Difference]: Start difference. First operand 27894 states and 35146 transitions. Second operand has 45 states, 43 states have (on average 5.0) internal successors, (215), 38 states have internal predecessors, (215), 16 states have call successors, (40), 16 states have call predecessors, (40), 15 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) [2023-04-02 05:18:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:48,245 INFO L93 Difference]: Finished difference Result 119525 states and 151896 transitions. [2023-04-02 05:18:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-04-02 05:18:48,246 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 5.0) internal successors, (215), 38 states have internal predecessors, (215), 16 states have call successors, (40), 16 states have call predecessors, (40), 15 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) Word has length 120 [2023-04-02 05:18:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:48,564 INFO L225 Difference]: With dead ends: 119525 [2023-04-02 05:18:48,564 INFO L226 Difference]: Without dead ends: 92964 [2023-04-02 05:18:48,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1967, Invalid=8953, Unknown=0, NotChecked=0, Total=10920 [2023-04-02 05:18:48,619 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3677 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3677 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:48,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3677 Valid, 158 Invalid, 3340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 05:18:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92964 states. [2023-04-02 05:19:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92964 to 85744. [2023-04-02 05:19:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85744 states, 62207 states have (on average 1.2321925185268539) internal successors, (76651), 64715 states have internal predecessors, (76651), 10661 states have call successors, (10661), 10369 states have call predecessors, (10661), 12875 states have return successors, (23012), 10659 states have call predecessors, (23012), 10660 states have call successors, (23012) [2023-04-02 05:19:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85744 states to 85744 states and 110324 transitions. [2023-04-02 05:19:01,582 INFO L78 Accepts]: Start accepts. Automaton has 85744 states and 110324 transitions. Word has length 120 [2023-04-02 05:19:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:01,582 INFO L495 AbstractCegarLoop]: Abstraction has 85744 states and 110324 transitions. [2023-04-02 05:19:01,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 5.0) internal successors, (215), 38 states have internal predecessors, (215), 16 states have call successors, (40), 16 states have call predecessors, (40), 15 states have return successors, (35), 12 states have call predecessors, (35), 14 states have call successors, (35) [2023-04-02 05:19:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 85744 states and 110324 transitions. [2023-04-02 05:19:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 05:19:01,585 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:01,585 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, 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] [2023-04-02 05:19:01,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-04-02 05:19:01,786 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:01,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:01,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1182254511, now seen corresponding path program 1 times [2023-04-02 05:19:01,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:01,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890113178] [2023-04-02 05:19:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:01,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:19:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:19:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:19:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:19:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:19:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:19:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:19:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:19:02,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:02,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890113178] [2023-04-02 05:19:02,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890113178] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:02,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346403305] [2023-04-02 05:19:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:02,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:02,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:02,460 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:02,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 05:19:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:02,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 05:19:02,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:03,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 05:19:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346403305] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:05,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 18] total 48 [2023-04-02 05:19:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405385633] [2023-04-02 05:19:05,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:05,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-04-02 05:19:05,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-04-02 05:19:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1988, Unknown=0, NotChecked=0, Total=2256 [2023-04-02 05:19:05,227 INFO L87 Difference]: Start difference. First operand 85744 states and 110324 transitions. Second operand has 48 states, 45 states have (on average 4.822222222222222) internal successors, (217), 40 states have internal predecessors, (217), 16 states have call successors, (40), 16 states have call predecessors, (40), 15 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) [2023-04-02 05:19:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:36,478 INFO L93 Difference]: Finished difference Result 271844 states and 347953 transitions. [2023-04-02 05:19:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-02 05:19:36,479 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 4.822222222222222) internal successors, (217), 40 states have internal predecessors, (217), 16 states have call successors, (40), 16 states have call predecessors, (40), 15 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) Word has length 120 [2023-04-02 05:19:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:37,501 INFO L225 Difference]: With dead ends: 271844 [2023-04-02 05:19:37,501 INFO L226 Difference]: Without dead ends: 184249 [2023-04-02 05:19:37,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1433, Invalid=5877, Unknown=0, NotChecked=0, Total=7310 [2023-04-02 05:19:37,660 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2193 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:37,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 156 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:19:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184249 states.