/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:18:33,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:18:33,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:18:34,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:18:34,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:18:34,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:18:34,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:18:34,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:18:34,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:18:34,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:18:34,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:18:34,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:18:34,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:18:34,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:18:34,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:18:34,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:18:34,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:18:34,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:18:34,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:18:34,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:18:34,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:18:34,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:18:34,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:18:34,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:18:34,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:18:34,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:18:34,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:18:34,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:18:34,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:18:34,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:18:34,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:18:34,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:18:34,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:18:34,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:18:34,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:18:34,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:18:34,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:18:34,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:18:34,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:18:34,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:18:34,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:18:34,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:18:34,062 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:18:34,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:18:34,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:18:34,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:18:34,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:18:34,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:18:34,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:18:34,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:18:34,064 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:18:34,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:18:34,064 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:18:34,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:18:34,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:18:34,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:18:34,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:18:34,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:18:34,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:18:34,069 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:18:34,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:18:34,070 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:18:34,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:18:34,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:18:34,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:18:34,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:18:34,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:18:34,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:18:34,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:18:34,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:18:34,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:18:34,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:18:34,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:18:34,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:18:34,072 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:18:34,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:18:34,072 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:18:34,073 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:18:34,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:18:34,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:18:34,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:18:34,310 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:18:34,311 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:18:34,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:18:35,370 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:18:35,541 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:18:35,542 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:18:35,549 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be8daf56/0687aaa4fc7b4e6a9d4f58c1f39cc903/FLAG1125ef305 [2023-04-02 06:18:35,559 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be8daf56/0687aaa4fc7b4e6a9d4f58c1f39cc903 [2023-04-02 06:18:35,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:18:35,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:18:35,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:18:35,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:18:35,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:18:35,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:18:35" (1/1) ... [2023-04-02 06:18:35,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3809bbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:35, skipping insertion in model container [2023-04-02 06:18:35,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:18:35" (1/1) ... [2023-04-02 06:18:35,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:18:35,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:18:35,802 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2023-04-02 06:18:35,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:18:35,877 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:18:35,933 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2023-04-02 06:18:35,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:18:36,007 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:18:36,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36 WrapperNode [2023-04-02 06:18:36,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:18:36,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:18:36,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:18:36,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:18:36,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:18:36,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:18:36,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:18:36,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:18:36,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (1/1) ... [2023-04-02 06:18:36,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:18:36,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:18:36,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:18:36,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:18:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:18:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:18:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:18:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:18:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:18:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:18:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:18:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:18:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:18:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:18:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:18:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:18:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:18:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:18:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:18:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:18:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:18:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:18:36,306 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:18:36,309 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:18:37,014 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:18:37,035 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:18:37,035 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:18:37,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:18:37 BoogieIcfgContainer [2023-04-02 06:18:37,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:18:37,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:18:37,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:18:37,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:18:37,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:18:35" (1/3) ... [2023-04-02 06:18:37,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd4f6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:18:37, skipping insertion in model container [2023-04-02 06:18:37,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:18:36" (2/3) ... [2023-04-02 06:18:37,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd4f6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:18:37, skipping insertion in model container [2023-04-02 06:18:37,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:18:37" (3/3) ... [2023-04-02 06:18:37,046 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-02 06:18:37,058 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:18:37,058 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:18:37,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:18:37,113 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;@27a23c28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:18:37,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:18:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 258 states have (on average 1.7209302325581395) internal successors, (444), 259 states have internal predecessors, (444), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:18:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 06:18:37,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:37,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:37,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:37,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:37,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1612622836, now seen corresponding path program 1 times [2023-04-02 06:18:37,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:37,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941406217] [2023-04-02 06:18:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:37,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:37,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941406217] [2023-04-02 06:18:37,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941406217] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:37,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:37,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:18:37,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914476672] [2023-04-02 06:18:37,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:37,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:18:37,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:38,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:18:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:38,013 INFO L87 Difference]: Start difference. First operand has 264 states, 258 states have (on average 1.7209302325581395) internal successors, (444), 259 states have internal predecessors, (444), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:39,439 INFO L93 Difference]: Finished difference Result 1176 states and 1900 transitions. [2023-04-02 06:18:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:18:39,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-02 06:18:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:39,454 INFO L225 Difference]: With dead ends: 1176 [2023-04-02 06:18:39,454 INFO L226 Difference]: Without dead ends: 1027 [2023-04-02 06:18:39,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:18:39,460 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 3692 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3692 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:39,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3692 Valid, 2931 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:18:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2023-04-02 06:18:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 400. [2023-04-02 06:18:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 396 states have (on average 1.5) internal successors, (594), 396 states have internal predecessors, (594), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 597 transitions. [2023-04-02 06:18:39,546 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 597 transitions. Word has length 101 [2023-04-02 06:18:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:39,547 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 597 transitions. [2023-04-02 06:18:39,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 597 transitions. [2023-04-02 06:18:39,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:18:39,549 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:39,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:39,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:18:39,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:39,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:39,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1207458237, now seen corresponding path program 1 times [2023-04-02 06:18:39,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:39,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27080514] [2023-04-02 06:18:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:39,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:40,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:40,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27080514] [2023-04-02 06:18:40,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27080514] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:40,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:40,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:18:40,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090284944] [2023-04-02 06:18:40,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:40,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:18:40,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:18:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:40,054 INFO L87 Difference]: Start difference. First operand 400 states and 597 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:41,330 INFO L93 Difference]: Finished difference Result 1977 states and 3061 transitions. [2023-04-02 06:18:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:18:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-02 06:18:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:41,336 INFO L225 Difference]: With dead ends: 1977 [2023-04-02 06:18:41,336 INFO L226 Difference]: Without dead ends: 1681 [2023-04-02 06:18:41,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:41,339 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2431 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:41,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 1701 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:18:41,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-04-02 06:18:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1671. [2023-04-02 06:18:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1667 states have (on average 1.5458908218356329) internal successors, (2577), 1667 states have internal predecessors, (2577), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2580 transitions. [2023-04-02 06:18:41,517 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2580 transitions. Word has length 102 [2023-04-02 06:18:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:41,518 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2580 transitions. [2023-04-02 06:18:41,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2580 transitions. [2023-04-02 06:18:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:18:41,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:41,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:41,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:18:41,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:41,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash -761221972, now seen corresponding path program 1 times [2023-04-02 06:18:41,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:41,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733040677] [2023-04-02 06:18:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:41,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:41,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733040677] [2023-04-02 06:18:41,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733040677] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:41,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:41,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:41,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629851048] [2023-04-02 06:18:41,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:41,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:18:41,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:18:41,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:18:41,871 INFO L87 Difference]: Start difference. First operand 1671 states and 2580 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:43,031 INFO L93 Difference]: Finished difference Result 4578 states and 7148 transitions. [2023-04-02 06:18:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:18:43,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:18:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:43,040 INFO L225 Difference]: With dead ends: 4578 [2023-04-02 06:18:43,040 INFO L226 Difference]: Without dead ends: 2979 [2023-04-02 06:18:43,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:43,044 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1458 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:43,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 359 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:18:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2023-04-02 06:18:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2977. [2023-04-02 06:18:43,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2973 states have (on average 1.555331315169862) internal successors, (4624), 2973 states have internal predecessors, (4624), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4627 transitions. [2023-04-02 06:18:43,309 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4627 transitions. Word has length 103 [2023-04-02 06:18:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:43,309 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 4627 transitions. [2023-04-02 06:18:43,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4627 transitions. [2023-04-02 06:18:43,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:18:43,311 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:43,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:43,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:18:43,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:43,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:43,312 INFO L85 PathProgramCache]: Analyzing trace with hash 542251240, now seen corresponding path program 1 times [2023-04-02 06:18:43,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:43,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769487685] [2023-04-02 06:18:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769487685] [2023-04-02 06:18:43,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769487685] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:43,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:43,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961632833] [2023-04-02 06:18:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:43,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:18:43,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:18:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:18:43,658 INFO L87 Difference]: Start difference. First operand 2977 states and 4627 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:45,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:45,001 INFO L93 Difference]: Finished difference Result 8033 states and 12585 transitions. [2023-04-02 06:18:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:18:45,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:18:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:45,022 INFO L225 Difference]: With dead ends: 8033 [2023-04-02 06:18:45,022 INFO L226 Difference]: Without dead ends: 5259 [2023-04-02 06:18:45,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:45,036 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1344 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:45,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 376 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:18:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2023-04-02 06:18:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 5257. [2023-04-02 06:18:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5253 states have (on average 1.559109080525414) internal successors, (8190), 5253 states have internal predecessors, (8190), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 8193 transitions. [2023-04-02 06:18:45,597 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 8193 transitions. Word has length 103 [2023-04-02 06:18:45,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:45,598 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 8193 transitions. [2023-04-02 06:18:45,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:45,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 8193 transitions. [2023-04-02 06:18:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:18:45,602 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:45,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:45,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:18:45,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:45,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2049388505, now seen corresponding path program 1 times [2023-04-02 06:18:45,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:45,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625945681] [2023-04-02 06:18:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:45,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:45,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:45,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625945681] [2023-04-02 06:18:45,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625945681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:45,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:45,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:45,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778720688] [2023-04-02 06:18:45,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:45,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:18:45,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:45,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:18:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:18:45,957 INFO L87 Difference]: Start difference. First operand 5257 states and 8193 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:47,667 INFO L93 Difference]: Finished difference Result 14932 states and 23364 transitions. [2023-04-02 06:18:47,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:18:47,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:18:47,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:47,698 INFO L225 Difference]: With dead ends: 14932 [2023-04-02 06:18:47,698 INFO L226 Difference]: Without dead ends: 9837 [2023-04-02 06:18:47,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:47,707 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1350 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:47,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 365 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:18:47,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2023-04-02 06:18:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 9835. [2023-04-02 06:18:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9835 states, 9831 states have (on average 1.5577255619977621) internal successors, (15314), 9831 states have internal predecessors, (15314), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9835 states to 9835 states and 15317 transitions. [2023-04-02 06:18:48,806 INFO L78 Accepts]: Start accepts. Automaton has 9835 states and 15317 transitions. Word has length 103 [2023-04-02 06:18:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:48,807 INFO L495 AbstractCegarLoop]: Abstraction has 9835 states and 15317 transitions. [2023-04-02 06:18:48,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9835 states and 15317 transitions. [2023-04-02 06:18:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:18:48,810 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:48,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:48,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:18:48,811 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:48,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1993639222, now seen corresponding path program 1 times [2023-04-02 06:18:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610228027] [2023-04-02 06:18:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:49,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610228027] [2023-04-02 06:18:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610228027] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:49,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:49,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:49,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412265939] [2023-04-02 06:18:49,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:49,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:18:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:49,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:18:49,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:18:49,118 INFO L87 Difference]: Start difference. First operand 9835 states and 15317 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:51,970 INFO L93 Difference]: Finished difference Result 28787 states and 44931 transitions. [2023-04-02 06:18:51,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:18:51,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:18:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:52,021 INFO L225 Difference]: With dead ends: 28787 [2023-04-02 06:18:52,022 INFO L226 Difference]: Without dead ends: 19077 [2023-04-02 06:18:52,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:52,044 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1372 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:52,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 365 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:18:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19077 states. [2023-04-02 06:18:53,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19077 to 19075. [2023-04-02 06:18:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19075 states, 19071 states have (on average 1.5538251795920508) internal successors, (29633), 19071 states have internal predecessors, (29633), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19075 states to 19075 states and 29636 transitions. [2023-04-02 06:18:53,959 INFO L78 Accepts]: Start accepts. Automaton has 19075 states and 29636 transitions. Word has length 103 [2023-04-02 06:18:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:53,960 INFO L495 AbstractCegarLoop]: Abstraction has 19075 states and 29636 transitions. [2023-04-02 06:18:53,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 19075 states and 29636 transitions. [2023-04-02 06:18:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:18:53,964 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:53,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:53,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:18:53,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:18:53,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2022095291, now seen corresponding path program 1 times [2023-04-02 06:18:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897402314] [2023-04-02 06:18:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:54,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:54,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897402314] [2023-04-02 06:18:54,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897402314] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:54,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:54,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024883632] [2023-04-02 06:18:54,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:54,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:18:54,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:18:54,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:18:54,242 INFO L87 Difference]: Start difference. First operand 19075 states and 29636 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:58,822 INFO L93 Difference]: Finished difference Result 56609 states and 88060 transitions. [2023-04-02 06:18:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:18:58,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:18:58,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:58,917 INFO L225 Difference]: With dead ends: 56609 [2023-04-02 06:18:58,918 INFO L226 Difference]: Without dead ends: 37629 [2023-04-02 06:18:58,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:58,951 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1398 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:58,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 363 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:18:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37629 states. [2023-04-02 06:19:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37629 to 37627. [2023-04-02 06:19:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37627 states, 37623 states have (on average 1.5480158413736278) internal successors, (58241), 37623 states have internal predecessors, (58241), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37627 states to 37627 states and 58244 transitions. [2023-04-02 06:19:02,914 INFO L78 Accepts]: Start accepts. Automaton has 37627 states and 58244 transitions. Word has length 103 [2023-04-02 06:19:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:19:02,915 INFO L495 AbstractCegarLoop]: Abstraction has 37627 states and 58244 transitions. [2023-04-02 06:19:02,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 37627 states and 58244 transitions. [2023-04-02 06:19:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:19:02,922 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:19:02,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:19:02,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:19:02,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:19:02,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:19:02,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1361122205, now seen corresponding path program 1 times [2023-04-02 06:19:02,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:19:02,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188773948] [2023-04-02 06:19:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:19:02,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:19:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:19:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:19:03,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:19:03,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188773948] [2023-04-02 06:19:03,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188773948] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:19:03,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:19:03,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:19:03,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936816229] [2023-04-02 06:19:03,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:19:03,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:19:03,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:19:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:19:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:19:03,192 INFO L87 Difference]: Start difference. First operand 37627 states and 58244 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:19:11,854 INFO L93 Difference]: Finished difference Result 112395 states and 174090 transitions. [2023-04-02 06:19:11,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:19:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:19:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:19:12,029 INFO L225 Difference]: With dead ends: 112395 [2023-04-02 06:19:12,030 INFO L226 Difference]: Without dead ends: 74824 [2023-04-02 06:19:12,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:19:12,105 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1458 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:19:12,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 357 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:19:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74824 states. [2023-04-02 06:19:20,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74824 to 74822. [2023-04-02 06:19:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74822 states, 74818 states have (on average 1.5396829639926222) internal successors, (115196), 74818 states have internal predecessors, (115196), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74822 states to 74822 states and 115199 transitions. [2023-04-02 06:19:20,775 INFO L78 Accepts]: Start accepts. Automaton has 74822 states and 115199 transitions. Word has length 103 [2023-04-02 06:19:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:19:20,775 INFO L495 AbstractCegarLoop]: Abstraction has 74822 states and 115199 transitions. [2023-04-02 06:19:20,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 74822 states and 115199 transitions. [2023-04-02 06:19:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:19:20,791 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:19:20,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:19:20,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:19:20,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:19:20,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:19:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash 928831378, now seen corresponding path program 1 times [2023-04-02 06:19:20,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:19:20,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826780091] [2023-04-02 06:19:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:19:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:19:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:19:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:19:21,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:19:21,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826780091] [2023-04-02 06:19:21,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826780091] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:19:21,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:19:21,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:19:21,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699115562] [2023-04-02 06:19:21,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:19:21,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:19:21,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:19:21,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:19:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:19:21,282 INFO L87 Difference]: Start difference. First operand 74822 states and 115199 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:19:38,204 INFO L93 Difference]: Finished difference Result 149320 states and 229184 transitions. [2023-04-02 06:19:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:19:38,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-04-02 06:19:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:19:38,589 INFO L225 Difference]: With dead ends: 149320 [2023-04-02 06:19:38,589 INFO L226 Difference]: Without dead ends: 149318 [2023-04-02 06:19:38,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:19:38,649 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 360 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:19:38,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1486 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:19:38,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149318 states. [2023-04-02 06:19:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149318 to 76358. [2023-04-02 06:19:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76358 states, 76354 states have (on average 1.5288262566466722) internal successors, (116732), 76354 states have internal predecessors, (116732), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76358 states to 76358 states and 116735 transitions. [2023-04-02 06:19:49,283 INFO L78 Accepts]: Start accepts. Automaton has 76358 states and 116735 transitions. Word has length 104 [2023-04-02 06:19:49,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:19:49,283 INFO L495 AbstractCegarLoop]: Abstraction has 76358 states and 116735 transitions. [2023-04-02 06:19:49,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 76358 states and 116735 transitions. [2023-04-02 06:19:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:19:49,298 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:19:49,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:19:49,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:19:49,299 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:19:49,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:19:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash -928672541, now seen corresponding path program 1 times [2023-04-02 06:19:49,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:19:49,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671205131] [2023-04-02 06:19:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:19:49,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:19:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:19:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:19:49,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:19:49,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671205131] [2023-04-02 06:19:49,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671205131] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:19:49,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:19:49,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:19:49,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252819169] [2023-04-02 06:19:49,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:19:49,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:19:49,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:19:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:19:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:19:49,750 INFO L87 Difference]: Start difference. First operand 76358 states and 116735 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:20:35,968 INFO L93 Difference]: Finished difference Result 374720 states and 568695 transitions. [2023-04-02 06:20:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 06:20:35,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-02 06:20:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:20:36,999 INFO L225 Difference]: With dead ends: 374720 [2023-04-02 06:20:37,000 INFO L226 Difference]: Without dead ends: 315773 [2023-04-02 06:20:37,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:20:37,139 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 3065 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:20:37,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3065 Valid, 1746 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:20:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315773 states. [2023-04-02 06:20:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315773 to 76630. [2023-04-02 06:20:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76630 states, 76626 states have (on average 1.5280453109910475) internal successors, (117088), 76626 states have internal predecessors, (117088), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76630 states to 76630 states and 117091 transitions. [2023-04-02 06:20:51,823 INFO L78 Accepts]: Start accepts. Automaton has 76630 states and 117091 transitions. Word has length 105 [2023-04-02 06:20:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:20:51,823 INFO L495 AbstractCegarLoop]: Abstraction has 76630 states and 117091 transitions. [2023-04-02 06:20:51,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:20:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 76630 states and 117091 transitions. [2023-04-02 06:20:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:20:51,841 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:20:51,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:20:51,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:20:51,842 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:20:51,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:20:51,842 INFO L85 PathProgramCache]: Analyzing trace with hash 911848291, now seen corresponding path program 1 times [2023-04-02 06:20:51,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:20:51,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399240846] [2023-04-02 06:20:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:20:51,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:20:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:20:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:20:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:20:52,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:20:52,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399240846] [2023-04-02 06:20:52,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399240846] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:20:52,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:20:52,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:20:52,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689647401] [2023-04-02 06:20:52,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:20:52,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:20:52,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:20:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:20:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:20:52,168 INFO L87 Difference]: Start difference. First operand 76630 states and 117091 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:21:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:21:16,103 INFO L93 Difference]: Finished difference Result 217818 states and 332149 transitions. [2023-04-02 06:21:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:21:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-02 06:21:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:21:16,610 INFO L225 Difference]: With dead ends: 217818 [2023-04-02 06:21:16,610 INFO L226 Difference]: Without dead ends: 143320 [2023-04-02 06:21:16,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:21:16,703 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 298 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:21:16,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 880 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:21:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143320 states. [2023-04-02 06:21:39,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143320 to 143318. [2023-04-02 06:21:40,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143318 states, 143314 states have (on average 1.5171162621935053) internal successors, (217424), 143314 states have internal predecessors, (217424), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:21:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143318 states to 143318 states and 217427 transitions. [2023-04-02 06:21:40,462 INFO L78 Accepts]: Start accepts. Automaton has 143318 states and 217427 transitions. Word has length 105 [2023-04-02 06:21:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:21:40,462 INFO L495 AbstractCegarLoop]: Abstraction has 143318 states and 217427 transitions. [2023-04-02 06:21:40,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:21:40,462 INFO L276 IsEmpty]: Start isEmpty. Operand 143318 states and 217427 transitions. [2023-04-02 06:21:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 06:21:40,477 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:21:40,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:21:40,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:21:40,478 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:21:40,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:21:40,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1831655259, now seen corresponding path program 1 times [2023-04-02 06:21:40,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:21:40,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017364855] [2023-04-02 06:21:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:21:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:21:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:21:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:21:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:21:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:21:41,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017364855] [2023-04-02 06:21:41,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017364855] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:21:41,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:21:41,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:21:41,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566184247] [2023-04-02 06:21:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:21:41,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:21:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:21:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:21:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:21:41,019 INFO L87 Difference]: Start difference. First operand 143318 states and 217427 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:13,599 INFO L93 Difference]: Finished difference Result 289257 states and 438776 transitions. [2023-04-02 06:22:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:22:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-04-02 06:22:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:14,134 INFO L225 Difference]: With dead ends: 289257 [2023-04-02 06:22:14,134 INFO L226 Difference]: Without dead ends: 186751 [2023-04-02 06:22:14,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:22:14,252 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 242 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:14,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 689 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:22:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186751 states. [2023-04-02 06:22:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186751 to 185601. [2023-04-02 06:22:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185601 states, 185597 states have (on average 1.5018615602622887) internal successors, (278741), 185597 states have internal predecessors, (278741), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)