/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-var-start-time.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:09:01,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:09:01,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:09:01,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:09:01,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:09:01,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:09:01,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:09:01,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:09:01,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:09:01,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:09:01,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:09:01,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:09:01,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:09:01,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:09:01,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:09:01,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:09:01,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:09:01,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:09:01,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:09:01,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:09:01,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:09:01,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:09:01,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:09:01,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:09:01,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:09:01,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:09:01,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:09:01,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:09:01,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:09:01,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:09:01,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:09:01,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:09:01,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:09:01,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:09:01,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:09:01,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:09:01,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:09:01,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:09:01,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:09:01,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:09:01,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:09:01,997 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 05:09:02,024 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:09:02,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:09:02,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:09:02,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:09:02,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:09:02,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:09:02,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:09:02,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:09:02,027 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:09:02,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:09:02,028 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:09:02,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:09:02,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:09:02,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:09:02,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:09:02,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:09:02,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:09:02,029 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:09:02,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:09:02,030 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:09:02,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:09:02,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:09:02,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:09:02,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:09:02,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:09:02,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:09:02,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:09:02,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:09:02,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:09:02,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:09:02,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:09:02,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:09:02,032 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:09:02,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:09:02,033 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:09:02,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:09:02,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:09:02,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:09:02,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:09:02,295 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:09:02,296 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:09:02,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:09:03,481 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:09:03,694 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:09:03,694 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:09:03,703 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242e6fc56/5924b84b62bd47f6a47824432f6288cf/FLAG91da95763 [2023-04-02 05:09:03,719 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242e6fc56/5924b84b62bd47f6a47824432f6288cf [2023-04-02 05:09:03,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:09:03,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:09:03,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:09:03,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:09:03,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:09:03,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:03,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c787a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03, skipping insertion in model container [2023-04-02 05:09:03,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:03,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:09:03,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:09:03,913 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-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2023-04-02 05:09:03,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:09:03,925 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:09:03,975 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-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2023-04-02 05:09:03,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:09:03,989 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:09:03,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03 WrapperNode [2023-04-02 05:09:03,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:09:03,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:09:03,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:09:03,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:09:03,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:03,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:04,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:04,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:04,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:04,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:04,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:04,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:04,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:09:04,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:09:04,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:09:04,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:09:04,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (1/1) ... [2023-04-02 05:09:04,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:09:04,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:09:04,071 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 05:09:04,080 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 05:09:04,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:09:04,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:09:04,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:09:04,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:09:04,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:09:04,113 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:09:04,114 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:09:04,114 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:09:04,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:09:04,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:09:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:09:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:09:04,114 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:09:04,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:09:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:09:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:09:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:09:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:09:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:09:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:09:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:09:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:09:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:09:04,188 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:09:04,190 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:09:04,545 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:09:04,551 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:09:04,551 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:09:04,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:09:04 BoogieIcfgContainer [2023-04-02 05:09:04,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:09:04,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:09:04,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:09:04,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:09:04,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:09:03" (1/3) ... [2023-04-02 05:09:04,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2c16ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:09:04, skipping insertion in model container [2023-04-02 05:09:04,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:09:03" (2/3) ... [2023-04-02 05:09:04,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2c16ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:09:04, skipping insertion in model container [2023-04-02 05:09:04,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:09:04" (3/3) ... [2023-04-02 05:09:04,559 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:09:04,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:09:04,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:09:04,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:09:04,624 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;@f201b4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:09:04,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:09:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 76 states have (on average 1.605263157894737) internal successors, (122), 77 states have internal predecessors, (122), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:09:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-02 05:09:04,637 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:04,638 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] [2023-04-02 05:09:04,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:04,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 197438278, now seen corresponding path program 1 times [2023-04-02 05:09:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376121662] [2023-04-02 05:09:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:04,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 05:09:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 05:09:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:09:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:09:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:05,088 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 05:09:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376121662] [2023-04-02 05:09:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376121662] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:05,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:05,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:09:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459205195] [2023-04-02 05:09:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:09:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:05,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:09:05,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:09:05,156 INFO L87 Difference]: Start difference. First operand has 94 states, 76 states have (on average 1.605263157894737) internal successors, (122), 77 states have internal predecessors, (122), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:09:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:05,703 INFO L93 Difference]: Finished difference Result 161 states and 232 transitions. [2023-04-02 05:09:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:09:05,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-04-02 05:09:05,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:05,712 INFO L225 Difference]: With dead ends: 161 [2023-04-02 05:09:05,712 INFO L226 Difference]: Without dead ends: 92 [2023-04-02 05:09:05,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:09:05,718 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 147 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:05,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 69 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:09:05,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-04-02 05:09:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2023-04-02 05:09:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.5753424657534247) internal successors, (115), 73 states have internal predecessors, (115), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 05:09:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 130 transitions. [2023-04-02 05:09:05,785 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 130 transitions. Word has length 49 [2023-04-02 05:09:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:05,786 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 130 transitions. [2023-04-02 05:09:05,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:09:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 130 transitions. [2023-04-02 05:09:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-02 05:09:05,792 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:05,792 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] [2023-04-02 05:09:05,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:09:05,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:05,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:05,794 INFO L85 PathProgramCache]: Analyzing trace with hash -196928508, now seen corresponding path program 1 times [2023-04-02 05:09:05,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:05,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408979342] [2023-04-02 05:09:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:05,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:06,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 05:09:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 05:09:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:06,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:09:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:09:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:06,220 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 05:09:06,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:06,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408979342] [2023-04-02 05:09:06,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408979342] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:06,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:06,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:09:06,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891809751] [2023-04-02 05:09:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:06,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:09:06,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:06,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:09:06,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:09:06,225 INFO L87 Difference]: Start difference. First operand 89 states and 130 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:09:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:06,949 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2023-04-02 05:09:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 05:09:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-04-02 05:09:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:06,952 INFO L225 Difference]: With dead ends: 165 [2023-04-02 05:09:06,952 INFO L226 Difference]: Without dead ends: 101 [2023-04-02 05:09:06,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:09:06,954 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 284 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:06,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 91 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:09:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-04-02 05:09:06,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2023-04-02 05:09:06,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 05:09:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2023-04-02 05:09:06,972 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 113 transitions. Word has length 49 [2023-04-02 05:09:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:06,972 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 113 transitions. [2023-04-02 05:09:06,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:09:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 113 transitions. [2023-04-02 05:09:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-02 05:09:06,974 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:06,974 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] [2023-04-02 05:09:06,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:09:06,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:06,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1847381946, now seen corresponding path program 1 times [2023-04-02 05:09:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915398594] [2023-04-02 05:09:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:06,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:07,364 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 05:09:07,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:07,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915398594] [2023-04-02 05:09:07,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915398594] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:07,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:07,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:09:07,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166710125] [2023-04-02 05:09:07,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:07,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:09:07,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:09:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:09:07,367 INFO L87 Difference]: Start difference. First operand 89 states and 113 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:09:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:09,903 INFO L93 Difference]: Finished difference Result 531 states and 738 transitions. [2023-04-02 05:09:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 05:09:09,904 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2023-04-02 05:09:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:09,909 INFO L225 Difference]: With dead ends: 531 [2023-04-02 05:09:09,910 INFO L226 Difference]: Without dead ends: 473 [2023-04-02 05:09:09,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=577, Invalid=1973, Unknown=0, NotChecked=0, Total=2550 [2023-04-02 05:09:09,913 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1002 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:09,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 173 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:09:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-04-02 05:09:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 440. [2023-04-02 05:09:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 357 states have (on average 1.4593837535014005) internal successors, (521), 364 states have internal predecessors, (521), 38 states have call successors, (38), 38 states have call predecessors, (38), 44 states have return successors, (61), 37 states have call predecessors, (61), 37 states have call successors, (61) [2023-04-02 05:09:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 620 transitions. [2023-04-02 05:09:10,027 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 620 transitions. Word has length 65 [2023-04-02 05:09:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:10,028 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 620 transitions. [2023-04-02 05:09:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:09:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 620 transitions. [2023-04-02 05:09:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 05:09:10,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:10,038 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] [2023-04-02 05:09:10,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:09:10,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:10,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash 504482728, now seen corresponding path program 1 times [2023-04-02 05:09:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713510048] [2023-04-02 05:09:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:10,481 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 05:09:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713510048] [2023-04-02 05:09:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713510048] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:10,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:10,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:09:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627886612] [2023-04-02 05:09:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:10,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:09:10,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:09:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:09:10,484 INFO L87 Difference]: Start difference. First operand 440 states and 620 transitions. Second operand has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 05:09:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:11,629 INFO L93 Difference]: Finished difference Result 538 states and 756 transitions. [2023-04-02 05:09:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:09:11,630 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2023-04-02 05:09:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:11,633 INFO L225 Difference]: With dead ends: 538 [2023-04-02 05:09:11,634 INFO L226 Difference]: Without dead ends: 536 [2023-04-02 05:09:11,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:09:11,636 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 301 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:11,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 252 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:09:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-04-02 05:09:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 476. [2023-04-02 05:09:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 381 states have (on average 1.4304461942257218) internal successors, (545), 392 states have internal predecessors, (545), 42 states have call successors, (42), 42 states have call predecessors, (42), 52 states have return successors, (69), 41 states have call predecessors, (69), 41 states have call successors, (69) [2023-04-02 05:09:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 656 transitions. [2023-04-02 05:09:11,693 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 656 transitions. Word has length 66 [2023-04-02 05:09:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:11,694 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 656 transitions. [2023-04-02 05:09:11,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 05:09:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 656 transitions. [2023-04-02 05:09:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 05:09:11,695 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:11,695 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] [2023-04-02 05:09:11,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:09:11,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:11,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash -890701998, now seen corresponding path program 1 times [2023-04-02 05:09:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:11,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188113651] [2023-04-02 05:09:11,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:11,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:12,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:12,032 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 05:09:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:12,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188113651] [2023-04-02 05:09:12,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188113651] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:12,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:12,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:09:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411824726] [2023-04-02 05:09:12,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:12,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:09:12,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:09:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:09:12,035 INFO L87 Difference]: Start difference. First operand 476 states and 656 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:09:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:13,367 INFO L93 Difference]: Finished difference Result 2032 states and 2846 transitions. [2023-04-02 05:09:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:09:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2023-04-02 05:09:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:13,375 INFO L225 Difference]: With dead ends: 2032 [2023-04-02 05:09:13,375 INFO L226 Difference]: Without dead ends: 1587 [2023-04-02 05:09:13,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:09:13,379 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 621 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:13,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 139 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:09:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2023-04-02 05:09:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1503. [2023-04-02 05:09:13,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1194 states have (on average 1.4380234505862646) internal successors, (1717), 1231 states have internal predecessors, (1717), 136 states have call successors, (136), 136 states have call predecessors, (136), 172 states have return successors, (260), 135 states have call predecessors, (260), 135 states have call successors, (260) [2023-04-02 05:09:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2113 transitions. [2023-04-02 05:09:13,523 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2113 transitions. Word has length 67 [2023-04-02 05:09:13,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:13,523 INFO L495 AbstractCegarLoop]: Abstraction has 1503 states and 2113 transitions. [2023-04-02 05:09:13,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:09:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2113 transitions. [2023-04-02 05:09:13,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 05:09:13,525 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:13,525 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] [2023-04-02 05:09:13,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:09:13,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:13,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash -769161800, now seen corresponding path program 1 times [2023-04-02 05:09:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008700036] [2023-04-02 05:09:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:13,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:13,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 05:09:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:09:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:09:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:13,809 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 05:09:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008700036] [2023-04-02 05:09:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008700036] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:09:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702643894] [2023-04-02 05:09:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:13,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:09:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:13,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:09:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:09:13,812 INFO L87 Difference]: Start difference. First operand 1503 states and 2113 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:09:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:14,971 INFO L93 Difference]: Finished difference Result 3291 states and 4645 transitions. [2023-04-02 05:09:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:09:14,971 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-04-02 05:09:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:14,981 INFO L225 Difference]: With dead ends: 3291 [2023-04-02 05:09:14,982 INFO L226 Difference]: Without dead ends: 2117 [2023-04-02 05:09:14,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:09:14,987 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 973 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:14,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 63 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:09:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-04-02 05:09:15,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1560. [2023-04-02 05:09:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1240 states have (on average 1.4411290322580645) internal successors, (1787), 1281 states have internal predecessors, (1787), 140 states have call successors, (140), 140 states have call predecessors, (140), 179 states have return successors, (268), 138 states have call predecessors, (268), 139 states have call successors, (268) [2023-04-02 05:09:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2195 transitions. [2023-04-02 05:09:15,176 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2195 transitions. Word has length 68 [2023-04-02 05:09:15,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:15,178 INFO L495 AbstractCegarLoop]: Abstraction has 1560 states and 2195 transitions. [2023-04-02 05:09:15,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:09:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2195 transitions. [2023-04-02 05:09:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 05:09:15,180 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:15,180 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] [2023-04-02 05:09:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:09:15,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:15,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1721202459, now seen corresponding path program 1 times [2023-04-02 05:09:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:15,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635499077] [2023-04-02 05:09:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:15,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:15,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:09:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:15,446 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 05:09:15,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635499077] [2023-04-02 05:09:15,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635499077] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:15,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:15,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:09:15,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391551369] [2023-04-02 05:09:15,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:15,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:09:15,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:15,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:09:15,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:09:15,448 INFO L87 Difference]: Start difference. First operand 1560 states and 2195 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:09:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:16,660 INFO L93 Difference]: Finished difference Result 3331 states and 4596 transitions. [2023-04-02 05:09:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:09:16,661 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-04-02 05:09:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:16,670 INFO L225 Difference]: With dead ends: 3331 [2023-04-02 05:09:16,671 INFO L226 Difference]: Without dead ends: 1841 [2023-04-02 05:09:16,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:09:16,678 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 795 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:16,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 68 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:09:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2023-04-02 05:09:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1599. [2023-04-02 05:09:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1271 states have (on average 1.4390243902439024) internal successors, (1829), 1314 states have internal predecessors, (1829), 143 states have call successors, (143), 143 states have call predecessors, (143), 184 states have return successors, (274), 141 states have call predecessors, (274), 142 states have call successors, (274) [2023-04-02 05:09:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2246 transitions. [2023-04-02 05:09:16,831 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2246 transitions. Word has length 68 [2023-04-02 05:09:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:16,831 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2246 transitions. [2023-04-02 05:09:16,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:09:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2246 transitions. [2023-04-02 05:09:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 05:09:16,832 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:16,833 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] [2023-04-02 05:09:16,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:09:16,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:16,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:16,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1174384607, now seen corresponding path program 1 times [2023-04-02 05:09:16,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:16,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970694524] [2023-04-02 05:09:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:16,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:16,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:17,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:09:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:09:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:17,115 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 05:09:17,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:17,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970694524] [2023-04-02 05:09:17,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970694524] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:17,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:17,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:09:17,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575575008] [2023-04-02 05:09:17,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:17,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:09:17,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:17,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:09:17,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:09:17,117 INFO L87 Difference]: Start difference. First operand 1599 states and 2246 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:09:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:18,359 INFO L93 Difference]: Finished difference Result 3750 states and 5213 transitions. [2023-04-02 05:09:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:09:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-04-02 05:09:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:18,372 INFO L225 Difference]: With dead ends: 3750 [2023-04-02 05:09:18,372 INFO L226 Difference]: Without dead ends: 2218 [2023-04-02 05:09:18,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:09:18,378 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 781 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:18,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 63 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:09:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2023-04-02 05:09:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1617. [2023-04-02 05:09:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1286 states have (on average 1.4409020217729394) internal successors, (1853), 1330 states have internal predecessors, (1853), 144 states have call successors, (144), 144 states have call predecessors, (144), 186 states have return successors, (277), 142 states have call predecessors, (277), 143 states have call successors, (277) [2023-04-02 05:09:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2274 transitions. [2023-04-02 05:09:18,572 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2274 transitions. Word has length 68 [2023-04-02 05:09:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:18,572 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2274 transitions. [2023-04-02 05:09:18,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:09:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2274 transitions. [2023-04-02 05:09:18,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 05:09:18,574 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:18,574 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, 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] [2023-04-02 05:09:18,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:09:18,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:18,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1737452286, now seen corresponding path program 1 times [2023-04-02 05:09:18,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:18,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408291764] [2023-04-02 05:09:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:18,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:09:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:09:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:09:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:09:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:09:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:09:18,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:18,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408291764] [2023-04-02 05:09:18,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408291764] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:09:18,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384805590] [2023-04-02 05:09:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:18,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:09:18,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:09:18,876 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 05:09:18,885 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 05:09:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:19,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:09:19,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:09:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-02 05:09:19,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:09:19,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384805590] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:19,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:09:19,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-04-02 05:09:19,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763991611] [2023-04-02 05:09:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:09:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:19,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:09:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:09:19,202 INFO L87 Difference]: Start difference. First operand 1617 states and 2274 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:09:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:19,722 INFO L93 Difference]: Finished difference Result 3531 states and 4994 transitions. [2023-04-02 05:09:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:09:19,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 104 [2023-04-02 05:09:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:19,733 INFO L225 Difference]: With dead ends: 3531 [2023-04-02 05:09:19,734 INFO L226 Difference]: Without dead ends: 2383 [2023-04-02 05:09:19,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:09:19,739 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 170 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:19,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 109 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:09:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2023-04-02 05:09:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2279. [2023-04-02 05:09:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1803 states have (on average 1.418191902384914) internal successors, (2557), 1840 states have internal predecessors, (2557), 220 states have call successors, (220), 220 states have call predecessors, (220), 255 states have return successors, (385), 218 states have call predecessors, (385), 219 states have call successors, (385) [2023-04-02 05:09:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3162 transitions. [2023-04-02 05:09:19,958 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3162 transitions. Word has length 104 [2023-04-02 05:09:19,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:19,958 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3162 transitions. [2023-04-02 05:09:19,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:09:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3162 transitions. [2023-04-02 05:09:19,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:09:19,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:19,960 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] [2023-04-02 05:09:19,970 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 05:09:20,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:09:20,170 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:20,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2003021815, now seen corresponding path program 1 times [2023-04-02 05:09:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109270700] [2023-04-02 05:09:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:09:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:09:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:09:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:09:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:09:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 05:09:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109270700] [2023-04-02 05:09:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109270700] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:20,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:09:20,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775952353] [2023-04-02 05:09:20,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:09:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:09:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:09:20,653 INFO L87 Difference]: Start difference. First operand 2279 states and 3162 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:09:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:24,108 INFO L93 Difference]: Finished difference Result 4716 states and 6555 transitions. [2023-04-02 05:09:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-04-02 05:09:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2023-04-02 05:09:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:24,124 INFO L225 Difference]: With dead ends: 4716 [2023-04-02 05:09:24,124 INFO L226 Difference]: Without dead ends: 3477 [2023-04-02 05:09:24,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1620 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=854, Invalid=3976, Unknown=0, NotChecked=0, Total=4830 [2023-04-02 05:09:24,130 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1520 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:24,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 187 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 05:09:24,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2023-04-02 05:09:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3031. [2023-04-02 05:09:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 2397 states have (on average 1.4196912807676263) internal successors, (3403), 2446 states have internal predecessors, (3403), 293 states have call successors, (293), 293 states have call predecessors, (293), 340 states have return successors, (511), 291 states have call predecessors, (511), 292 states have call successors, (511) [2023-04-02 05:09:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4207 transitions. [2023-04-02 05:09:24,444 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4207 transitions. Word has length 105 [2023-04-02 05:09:24,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:24,445 INFO L495 AbstractCegarLoop]: Abstraction has 3031 states and 4207 transitions. [2023-04-02 05:09:24,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:09:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4207 transitions. [2023-04-02 05:09:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:09:24,447 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:24,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:09:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:09:24,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:24,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash 487342444, now seen corresponding path program 1 times [2023-04-02 05:09:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:24,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847385411] [2023-04-02 05:09:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:09:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:09:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:09:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:09:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:09:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 05:09:24,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:24,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847385411] [2023-04-02 05:09:24,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847385411] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:24,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:24,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:09:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907626897] [2023-04-02 05:09:24,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:24,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:09:24,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:09:24,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:09:24,832 INFO L87 Difference]: Start difference. First operand 3031 states and 4207 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:09:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:28,175 INFO L93 Difference]: Finished difference Result 7549 states and 10468 transitions. [2023-04-02 05:09:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-04-02 05:09:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 105 [2023-04-02 05:09:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:28,198 INFO L225 Difference]: With dead ends: 7549 [2023-04-02 05:09:28,198 INFO L226 Difference]: Without dead ends: 4937 [2023-04-02 05:09:28,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=794, Invalid=3628, Unknown=0, NotChecked=0, Total=4422 [2023-04-02 05:09:28,207 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1394 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:28,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 226 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 05:09:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2023-04-02 05:09:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 4459. [2023-04-02 05:09:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4459 states, 3535 states have (on average 1.426025459688826) internal successors, (5041), 3590 states have internal predecessors, (5041), 435 states have call successors, (435), 435 states have call predecessors, (435), 488 states have return successors, (742), 433 states have call predecessors, (742), 434 states have call successors, (742) [2023-04-02 05:09:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6218 transitions. [2023-04-02 05:09:28,673 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6218 transitions. Word has length 105 [2023-04-02 05:09:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:28,673 INFO L495 AbstractCegarLoop]: Abstraction has 4459 states and 6218 transitions. [2023-04-02 05:09:28,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:09:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6218 transitions. [2023-04-02 05:09:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:09:28,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:28,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:09:28,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:09:28,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:28,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1886722674, now seen corresponding path program 1 times [2023-04-02 05:09:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:28,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765221105] [2023-04-02 05:09:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:28,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:09:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:09:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:09:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:09:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:09:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 05:09:29,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:29,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765221105] [2023-04-02 05:09:29,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765221105] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:29,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:29,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:09:29,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347267361] [2023-04-02 05:09:29,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:29,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:09:29,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:29,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:09:29,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:09:29,035 INFO L87 Difference]: Start difference. First operand 4459 states and 6218 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:09:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:32,276 INFO L93 Difference]: Finished difference Result 7969 states and 11087 transitions. [2023-04-02 05:09:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-04-02 05:09:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2023-04-02 05:09:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:32,298 INFO L225 Difference]: With dead ends: 7969 [2023-04-02 05:09:32,298 INFO L226 Difference]: Without dead ends: 5204 [2023-04-02 05:09:32,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=716, Invalid=3066, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 05:09:32,307 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1088 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:32,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 243 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 05:09:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2023-04-02 05:09:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 4428. [2023-04-02 05:09:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 3512 states have (on average 1.4276765375854215) internal successors, (5014), 3589 states have internal predecessors, (5014), 420 states have call successors, (420), 420 states have call predecessors, (420), 495 states have return successors, (715), 418 states have call predecessors, (715), 419 states have call successors, (715) [2023-04-02 05:09:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 6149 transitions. [2023-04-02 05:09:32,774 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 6149 transitions. Word has length 105 [2023-04-02 05:09:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:32,774 INFO L495 AbstractCegarLoop]: Abstraction has 4428 states and 6149 transitions. [2023-04-02 05:09:32,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:09:32,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 6149 transitions. [2023-04-02 05:09:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:09:32,777 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:32,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:09:32,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:09:32,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:32,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash 34332780, now seen corresponding path program 1 times [2023-04-02 05:09:32,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:32,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305000387] [2023-04-02 05:09:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:32,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:09:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:09:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:09:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:09:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:09:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:09:33,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305000387] [2023-04-02 05:09:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305000387] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:09:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593054675] [2023-04-02 05:09:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:33,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:09:33,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:09:33,036 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 05:09:33,038 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 05:09:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:33,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:09:33,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:09:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:09:33,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:09:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:09:33,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593054675] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:09:33,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:09:33,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-04-02 05:09:33,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793482421] [2023-04-02 05:09:33,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:09:33,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:09:33,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:09:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:09:33,614 INFO L87 Difference]: Start difference. First operand 4428 states and 6149 transitions. Second operand has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:09:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:35,964 INFO L93 Difference]: Finished difference Result 11091 states and 15290 transitions. [2023-04-02 05:09:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 05:09:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 108 [2023-04-02 05:09:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:35,990 INFO L225 Difference]: With dead ends: 11091 [2023-04-02 05:09:35,991 INFO L226 Difference]: Without dead ends: 6729 [2023-04-02 05:09:36,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:09:36,004 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1141 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:36,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 117 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:09:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6729 states. [2023-04-02 05:09:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 5694. [2023-04-02 05:09:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 4430 states have (on average 1.3785553047404062) internal successors, (6107), 4563 states have internal predecessors, (6107), 566 states have call successors, (566), 566 states have call predecessors, (566), 697 states have return successors, (971), 564 states have call predecessors, (971), 565 states have call successors, (971) [2023-04-02 05:09:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 7644 transitions. [2023-04-02 05:09:36,694 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 7644 transitions. Word has length 108 [2023-04-02 05:09:36,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:36,694 INFO L495 AbstractCegarLoop]: Abstraction has 5694 states and 7644 transitions. [2023-04-02 05:09:36,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:09:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 7644 transitions. [2023-04-02 05:09:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:09:36,697 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:36,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:09:36,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:09:36,903 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,SelfDestructingSolverStorable12 [2023-04-02 05:09:36,904 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:36,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1433713010, now seen corresponding path program 1 times [2023-04-02 05:09:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278431953] [2023-04-02 05:09:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:36,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:09:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:09:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:09:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:09:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:09:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:09:37,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:37,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278431953] [2023-04-02 05:09:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278431953] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:09:37,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884659311] [2023-04-02 05:09:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:37,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:09:37,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:09:37,129 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 05:09:37,153 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 05:09:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:37,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:09:37,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:09:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:09:37,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:09:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:09:37,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884659311] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:09:37,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:09:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-04-02 05:09:37,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113059025] [2023-04-02 05:09:37,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:09:37,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:09:37,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:37,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:09:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:09:37,570 INFO L87 Difference]: Start difference. First operand 5694 states and 7644 transitions. Second operand has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:09:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:40,211 INFO L93 Difference]: Finished difference Result 15395 states and 20662 transitions. [2023-04-02 05:09:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 05:09:40,212 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 108 [2023-04-02 05:09:40,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:40,265 INFO L225 Difference]: With dead ends: 15395 [2023-04-02 05:09:40,265 INFO L226 Difference]: Without dead ends: 10611 [2023-04-02 05:09:40,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=484, Invalid=1678, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:09:40,279 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1078 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:40,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 138 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:09:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10611 states. [2023-04-02 05:09:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10611 to 9648. [2023-04-02 05:09:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9648 states, 7303 states have (on average 1.3200054772011502) internal successors, (9640), 7545 states have internal predecessors, (9640), 1052 states have call successors, (1052), 1052 states have call predecessors, (1052), 1292 states have return successors, (1938), 1050 states have call predecessors, (1938), 1051 states have call successors, (1938) [2023-04-02 05:09:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9648 states to 9648 states and 12630 transitions. [2023-04-02 05:09:41,537 INFO L78 Accepts]: Start accepts. Automaton has 9648 states and 12630 transitions. Word has length 108 [2023-04-02 05:09:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:41,538 INFO L495 AbstractCegarLoop]: Abstraction has 9648 states and 12630 transitions. [2023-04-02 05:09:41,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:09:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 9648 states and 12630 transitions. [2023-04-02 05:09:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:09:41,541 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:41,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:41,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 05:09:41,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:09:41,747 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:41,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:41,748 INFO L85 PathProgramCache]: Analyzing trace with hash 255282353, now seen corresponding path program 1 times [2023-04-02 05:09:41,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:41,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085179498] [2023-04-02 05:09:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:41,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:09:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:09:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:09:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:09:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:09:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:09:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:09:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:09:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:09:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:09:42,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:42,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085179498] [2023-04-02 05:09:42,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085179498] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:09:42,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435414814] [2023-04-02 05:09:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:42,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:09:42,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:09:42,528 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 05:09:42,531 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 05:09:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:42,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 05:09:42,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:09:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:09:43,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:09:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:09:45,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435414814] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:09:45,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:09:45,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 47 [2023-04-02 05:09:45,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727802919] [2023-04-02 05:09:45,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:09:45,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-04-02 05:09:45,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-04-02 05:09:45,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1889, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:09:45,758 INFO L87 Difference]: Start difference. First operand 9648 states and 12630 transitions. Second operand has 47 states, 44 states have (on average 4.5) internal successors, (198), 40 states have internal predecessors, (198), 16 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2023-04-02 05:09:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:54,497 INFO L93 Difference]: Finished difference Result 49132 states and 65226 transitions. [2023-04-02 05:09:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-02 05:09:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 4.5) internal successors, (198), 40 states have internal predecessors, (198), 16 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) Word has length 108 [2023-04-02 05:09:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:54,667 INFO L225 Difference]: With dead ends: 49132 [2023-04-02 05:09:54,668 INFO L226 Difference]: Without dead ends: 39629 [2023-04-02 05:09:54,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2640 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2020, Invalid=8282, Unknown=0, NotChecked=0, Total=10302 [2023-04-02 05:09:54,710 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2162 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 3391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:54,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 174 Invalid, 3391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 05:09:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39629 states. [2023-04-02 05:09:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39629 to 35852. [2023-04-02 05:09:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35852 states, 26808 states have (on average 1.3045359594151) internal successors, (34972), 28399 states have internal predecessors, (34972), 3801 states have call successors, (3801), 3653 states have call predecessors, (3801), 5242 states have return successors, (8994), 3799 states have call predecessors, (8994), 3800 states have call successors, (8994) [2023-04-02 05:09:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35852 states to 35852 states and 47767 transitions. [2023-04-02 05:09:58,793 INFO L78 Accepts]: Start accepts. Automaton has 35852 states and 47767 transitions. Word has length 108 [2023-04-02 05:09:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:58,794 INFO L495 AbstractCegarLoop]: Abstraction has 35852 states and 47767 transitions. [2023-04-02 05:09:58,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 4.5) internal successors, (198), 40 states have internal predecessors, (198), 16 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2023-04-02 05:09:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 35852 states and 47767 transitions. [2023-04-02 05:09:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:09:58,800 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:58,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:58,812 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 05:09:59,012 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,SelfDestructingSolverStorable14 [2023-04-02 05:09:59,012 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:59,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash -398806805, now seen corresponding path program 1 times [2023-04-02 05:09:59,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:59,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934502206] [2023-04-02 05:09:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:59,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:59,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:10:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 05:10:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:10:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 05:10:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 05:10:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:10:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:10:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:10:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:10:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:10:00,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:10:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934502206] [2023-04-02 05:10:00,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934502206] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:10:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996505946] [2023-04-02 05:10:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:10:00,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:10:00,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:10:00,418 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 05:10:00,420 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 05:10:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:00,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 05:10:00,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:10:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:10:02,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:10:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:10:03,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996505946] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:10:03,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:10:03,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 18] total 52 [2023-04-02 05:10:03,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322532668] [2023-04-02 05:10:03,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:10:03,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-04-02 05:10:03,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:10:03,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-04-02 05:10:03,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=2376, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:10:03,827 INFO L87 Difference]: Start difference. First operand 35852 states and 47767 transitions. Second operand has 52 states, 48 states have (on average 4.333333333333333) internal successors, (208), 44 states have internal predecessors, (208), 16 states have call successors, (34), 14 states have call predecessors, (34), 15 states have return successors, (30), 15 states have call predecessors, (30), 15 states have call successors, (30) [2023-04-02 05:11:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:11:47,202 INFO L93 Difference]: Finished difference Result 456499 states and 619113 transitions. [2023-04-02 05:11:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2023-04-02 05:11:47,203 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 48 states have (on average 4.333333333333333) internal successors, (208), 44 states have internal predecessors, (208), 16 states have call successors, (34), 14 states have call predecessors, (34), 15 states have return successors, (30), 15 states have call predecessors, (30), 15 states have call successors, (30) Word has length 108 [2023-04-02 05:11:47,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:11:49,550 INFO L225 Difference]: With dead ends: 456499 [2023-04-02 05:11:49,550 INFO L226 Difference]: Without dead ends: 417672 [2023-04-02 05:11:49,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 416 SyntacticMatches, 1 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83196 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=22768, Invalid=177488, Unknown=0, NotChecked=0, Total=200256 [2023-04-02 05:11:49,805 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7833 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 5571 mSolverCounterSat, 1352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7833 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 6923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1352 IncrementalHoareTripleChecker+Valid, 5571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:11:49,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7833 Valid, 237 Invalid, 6923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1352 Valid, 5571 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-02 05:11:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417672 states.