/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:07:18,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:07:18,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:07:18,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:07:18,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:07:18,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:07:18,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:07:18,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:07:18,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:07:18,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:07:18,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:07:18,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:07:18,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:07:18,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:07:18,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:07:18,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:07:18,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:07:18,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:07:18,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:07:18,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:07:18,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:07:18,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:07:18,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:07:18,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:07:18,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:07:18,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:07:18,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:07:18,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:07:18,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:07:18,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:07:18,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:07:18,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:07:18,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:07:18,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:07:18,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:07:18,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:07:18,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:07:18,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:07:18,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:07:18,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:07:18,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:07:18,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:07:18,400 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:07:18,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:07:18,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:07:18,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:07:18,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:07:18,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:07:18,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:07:18,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:07:18,402 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:07:18,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:07:18,403 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:07:18,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:07:18,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:07:18,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:07:18,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:07:18,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:07:18,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:07:18,404 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:07:18,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:07:18,404 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:07:18,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:07:18,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:07:18,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:07:18,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:07:18,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:07:18,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:07:18,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:07:18,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:07:18,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:07:18,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:07:18,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:07:18,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:07:18,405 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:07:18,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:07:18,406 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:07:18,406 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:07:18,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:07:18,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:07:18,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:07:18,574 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:07:18,574 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:07:18,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:07:19,497 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:07:19,736 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:07:19,736 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:07:19,751 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9921140/8c2eccb07fac45e49c54b99031c2c4af/FLAG49b5e6193 [2023-04-02 05:07:19,762 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9921140/8c2eccb07fac45e49c54b99031c2c4af [2023-04-02 05:07:19,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:07:19,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:07:19,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:07:19,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:07:19,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:07:19,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:07:19" (1/1) ... [2023-04-02 05:07:19,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713918dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:19, skipping insertion in model container [2023-04-02 05:07:19,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:07:19" (1/1) ... [2023-04-02 05:07:19,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:07:19,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:07:20,099 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c[61123,61136] [2023-04-02 05:07:20,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:07:20,125 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:07:20,230 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c[61123,61136] [2023-04-02 05:07:20,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:07:20,251 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:07:20,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20 WrapperNode [2023-04-02 05:07:20,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:07:20,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:07:20,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:07:20,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:07:20,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:07:20,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:07:20,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:07:20,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:07:20,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (1/1) ... [2023-04-02 05:07:20,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:07:20,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:07:20,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:07:20,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:07:20,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:07:20,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:07:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:07:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:07:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:07:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:07:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:07:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:07:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:07:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:07:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:07:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:07:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:07:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:07:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:07:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:07:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:07:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:07:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:07:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:07:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:07:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:07:20,613 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:07:20,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:07:21,759 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:07:21,769 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:07:21,769 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:07:21,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:07:21 BoogieIcfgContainer [2023-04-02 05:07:21,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:07:21,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:07:21,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:07:21,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:07:21,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:07:19" (1/3) ... [2023-04-02 05:07:21,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a270e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:07:21, skipping insertion in model container [2023-04-02 05:07:21,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:07:20" (2/3) ... [2023-04-02 05:07:21,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a270e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:07:21, skipping insertion in model container [2023-04-02 05:07:21,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:07:21" (3/3) ... [2023-04-02 05:07:21,778 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:07:21,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:07:21,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:07:21,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:07:21,838 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;@43a28ce8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:07:21,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:07:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 707 states, 683 states have (on average 1.8550512445095169) internal successors, (1267), 685 states have internal predecessors, (1267), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:07:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-04-02 05:07:21,861 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:07:21,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:07:21,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:07:21,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:07:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1428751554, now seen corresponding path program 1 times [2023-04-02 05:07:21,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:07:21,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490100613] [2023-04-02 05:07:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:07:21,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:07:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:07:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:07:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 05:07:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 05:07:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 05:07:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:07:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 05:07:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-02 05:07:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 05:07:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:07:23,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:07:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490100613] [2023-04-02 05:07:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490100613] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:07:23,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:07:23,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:07:23,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918870949] [2023-04-02 05:07:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:07:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:07:23,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:07:23,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:07:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:07:23,872 INFO L87 Difference]: Start difference. First operand has 707 states, 683 states have (on average 1.8550512445095169) internal successors, (1267), 685 states have internal predecessors, (1267), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 14 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:07:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:07:32,673 INFO L93 Difference]: Finished difference Result 884 states and 1586 transitions. [2023-04-02 05:07:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:07:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 182 [2023-04-02 05:07:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:07:32,688 INFO L225 Difference]: With dead ends: 884 [2023-04-02 05:07:32,688 INFO L226 Difference]: Without dead ends: 727 [2023-04-02 05:07:32,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:07:32,695 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 5071 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 9326 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5078 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 9430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 9326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:07:32,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5078 Valid, 144 Invalid, 9430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 9326 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-02 05:07:32,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-04-02 05:07:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 702. [2023-04-02 05:07:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 680 states have (on average 1.7647058823529411) internal successors, (1200), 681 states have internal predecessors, (1200), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:07:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1221 transitions. [2023-04-02 05:07:32,932 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1221 transitions. Word has length 182 [2023-04-02 05:07:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:07:32,934 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1221 transitions. [2023-04-02 05:07:32,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:07:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1221 transitions. [2023-04-02 05:07:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-04-02 05:07:32,940 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:07:32,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:07:32,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:07:32,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:07:32,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:07:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash 837917016, now seen corresponding path program 1 times [2023-04-02 05:07:32,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:07:32,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246461684] [2023-04-02 05:07:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:07:32,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:07:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:07:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:07:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:07:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:07:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:07:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:07:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:07:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:07:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:07:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:07:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:07:34,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:07:34,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246461684] [2023-04-02 05:07:34,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246461684] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:07:34,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:07:34,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:07:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761197761] [2023-04-02 05:07:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:07:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:07:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:07:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:07:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:07:34,599 INFO L87 Difference]: Start difference. First operand 702 states and 1221 transitions. Second operand has 19 states, 19 states have (on average 11.631578947368421) internal successors, (221), 13 states have internal predecessors, (221), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:07,178 INFO L93 Difference]: Finished difference Result 3220 states and 5468 transitions. [2023-04-02 05:08:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-04-02 05:08:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.631578947368421) internal successors, (221), 13 states have internal predecessors, (221), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 241 [2023-04-02 05:08:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:07,197 INFO L225 Difference]: With dead ends: 3220 [2023-04-02 05:08:07,197 INFO L226 Difference]: Without dead ends: 3076 [2023-04-02 05:08:07,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6646 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=2884, Invalid=15206, Unknown=0, NotChecked=0, Total=18090 [2023-04-02 05:08:07,208 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 11291 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 14410 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11304 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 14777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 14410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:07,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11304 Valid, 229 Invalid, 14777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 14410 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-04-02 05:08:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2023-04-02 05:08:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1416. [2023-04-02 05:08:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1314 states have (on average 1.751902587519026) internal successors, (2302), 1325 states have internal predecessors, (2302), 46 states have call successors, (46), 46 states have call predecessors, (46), 55 states have return successors, (79), 45 states have call predecessors, (79), 45 states have call successors, (79) [2023-04-02 05:08:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2427 transitions. [2023-04-02 05:08:07,551 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2427 transitions. Word has length 241 [2023-04-02 05:08:07,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:07,551 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 2427 transitions. [2023-04-02 05:08:07,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.631578947368421) internal successors, (221), 13 states have internal predecessors, (221), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:07,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2427 transitions. [2023-04-02 05:08:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-04-02 05:08:07,555 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:07,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:07,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:08:07,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:07,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1698274088, now seen corresponding path program 1 times [2023-04-02 05:08:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:07,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079555006] [2023-04-02 05:08:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:08:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:08:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:08:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:08:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:08:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:08:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:08:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:08,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:08,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079555006] [2023-04-02 05:08:08,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079555006] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:08,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:08:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023841466] [2023-04-02 05:08:08,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:08:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:08:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:08:08,694 INFO L87 Difference]: Start difference. First operand 1416 states and 2427 transitions. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 6 states have internal predecessors, (222), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:21,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:21,178 INFO L93 Difference]: Finished difference Result 3908 states and 6593 transitions. [2023-04-02 05:08:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:08:21,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 6 states have internal predecessors, (222), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 242 [2023-04-02 05:08:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:21,186 INFO L225 Difference]: With dead ends: 3908 [2023-04-02 05:08:21,186 INFO L226 Difference]: Without dead ends: 3050 [2023-04-02 05:08:21,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:08:21,190 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5705 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7438 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5717 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 7438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:21,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5717 Valid, 139 Invalid, 7534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 7438 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-02 05:08:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2023-04-02 05:08:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2661. [2023-04-02 05:08:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2413 states have (on average 1.7384997927890593) internal successors, (4195), 2444 states have internal predecessors, (4195), 109 states have call successors, (109), 109 states have call predecessors, (109), 138 states have return successors, (210), 108 states have call predecessors, (210), 108 states have call successors, (210) [2023-04-02 05:08:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4514 transitions. [2023-04-02 05:08:21,652 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4514 transitions. Word has length 242 [2023-04-02 05:08:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:21,652 INFO L495 AbstractCegarLoop]: Abstraction has 2661 states and 4514 transitions. [2023-04-02 05:08:21,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 6 states have internal predecessors, (222), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4514 transitions. [2023-04-02 05:08:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-04-02 05:08:21,657 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:21,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:21,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:08:21,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:21,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1747112689, now seen corresponding path program 1 times [2023-04-02 05:08:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:21,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304615198] [2023-04-02 05:08:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:08:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:08:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:08:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:08:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:08:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:08:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:08:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:22,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:22,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304615198] [2023-04-02 05:08:22,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304615198] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:22,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:22,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:08:22,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137100209] [2023-04-02 05:08:22,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:22,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:08:22,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:22,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:08:22,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:08:22,807 INFO L87 Difference]: Start difference. First operand 2661 states and 4514 transitions. Second operand has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 6 states have internal predecessors, (223), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:35,814 INFO L93 Difference]: Finished difference Result 14964 states and 25071 transitions. [2023-04-02 05:08:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:08:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 6 states have internal predecessors, (223), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 243 [2023-04-02 05:08:35,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:35,852 INFO L225 Difference]: With dead ends: 14964 [2023-04-02 05:08:35,852 INFO L226 Difference]: Without dead ends: 12861 [2023-04-02 05:08:35,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:08:35,868 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5743 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7406 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5755 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 7406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:35,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5755 Valid, 139 Invalid, 7504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 7406 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-02 05:08:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12861 states. [2023-04-02 05:08:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12861 to 10948. [2023-04-02 05:08:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10948 states, 9725 states have (on average 1.7255526992287917) internal successors, (16781), 9891 states have internal predecessors, (16781), 529 states have call successors, (529), 529 states have call predecessors, (529), 693 states have return successors, (1119), 528 states have call predecessors, (1119), 528 states have call successors, (1119) [2023-04-02 05:08:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10948 states to 10948 states and 18429 transitions. [2023-04-02 05:08:37,372 INFO L78 Accepts]: Start accepts. Automaton has 10948 states and 18429 transitions. Word has length 243 [2023-04-02 05:08:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:08:37,372 INFO L495 AbstractCegarLoop]: Abstraction has 10948 states and 18429 transitions. [2023-04-02 05:08:37,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 6 states have internal predecessors, (223), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 10948 states and 18429 transitions. [2023-04-02 05:08:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-04-02 05:08:37,377 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:08:37,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:08:37,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:08:37,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:08:37,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:08:37,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1231605313, now seen corresponding path program 1 times [2023-04-02 05:08:37,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:08:37,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299971285] [2023-04-02 05:08:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:08:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:08:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:08:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:08:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:08:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:08:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:08:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:08:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:08:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:08:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:08:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:08:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:08:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:08:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299971285] [2023-04-02 05:08:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299971285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:08:38,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:08:38,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:08:38,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181738508] [2023-04-02 05:08:38,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:08:38,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:08:38,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:08:38,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:08:38,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:08:38,388 INFO L87 Difference]: Start difference. First operand 10948 states and 18429 transitions. Second operand has 12 states, 12 states have (on average 18.666666666666668) internal successors, (224), 6 states have internal predecessors, (224), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:08:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:08:55,644 INFO L93 Difference]: Finished difference Result 72138 states and 120597 transitions. [2023-04-02 05:08:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:08:55,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.666666666666668) internal successors, (224), 6 states have internal predecessors, (224), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 244 [2023-04-02 05:08:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:08:55,823 INFO L225 Difference]: With dead ends: 72138 [2023-04-02 05:08:55,823 INFO L226 Difference]: Without dead ends: 61748 [2023-04-02 05:08:55,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:08:55,855 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6878 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7267 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6890 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 7267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:08:55,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6890 Valid, 139 Invalid, 7383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 7267 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-02 05:08:55,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61748 states. [2023-04-02 05:09:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61748 to 52215. [2023-04-02 05:09:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52215 states, 46057 states have (on average 1.7176759233124173) internal successors, (79111), 46958 states have internal predecessors, (79111), 2629 states have call successors, (2629), 2629 states have call predecessors, (2629), 3528 states have return successors, (5976), 2628 states have call predecessors, (5976), 2628 states have call successors, (5976) [2023-04-02 05:09:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52215 states to 52215 states and 87716 transitions. [2023-04-02 05:09:02,315 INFO L78 Accepts]: Start accepts. Automaton has 52215 states and 87716 transitions. Word has length 244 [2023-04-02 05:09:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:09:02,316 INFO L495 AbstractCegarLoop]: Abstraction has 52215 states and 87716 transitions. [2023-04-02 05:09:02,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.666666666666668) internal successors, (224), 6 states have internal predecessors, (224), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:09:02,317 INFO L276 IsEmpty]: Start isEmpty. Operand 52215 states and 87716 transitions. [2023-04-02 05:09:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-04-02 05:09:02,323 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:09:02,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:09:02,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:09:02,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:09:02,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:09:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1812536518, now seen corresponding path program 1 times [2023-04-02 05:09:02,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:09:02,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220874121] [2023-04-02 05:09:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:09:02,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:09:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:09:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:09:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:09:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:09:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:09:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:09:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:09:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:09:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:09:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:09:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:09:03,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:09:03,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220874121] [2023-04-02 05:09:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220874121] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:09:03,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:09:03,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:09:03,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991967600] [2023-04-02 05:09:03,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:09:03,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:09:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:09:03,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:09:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:09:03,281 INFO L87 Difference]: Start difference. First operand 52215 states and 87716 transitions. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 6 states have internal predecessors, (225), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:09:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:09:42,452 INFO L93 Difference]: Finished difference Result 357528 states and 597411 transitions. [2023-04-02 05:09:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 05:09:42,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 6 states have internal predecessors, (225), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 245 [2023-04-02 05:09:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:09:43,919 INFO L225 Difference]: With dead ends: 357528 [2023-04-02 05:09:43,919 INFO L226 Difference]: Without dead ends: 305871 [2023-04-02 05:09:44,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:09:44,073 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7182 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 7289 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7194 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 7407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 7289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:09:44,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7194 Valid, 131 Invalid, 7407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 7289 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-02 05:09:44,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305871 states. [2023-04-02 05:10:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305871 to 258238. [2023-04-02 05:10:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258238 states, 227105 states have (on average 1.712269655005394) internal successors, (388865), 231981 states have internal predecessors, (388865), 13129 states have call successors, (13129), 13129 states have call predecessors, (13129), 18003 states have return successors, (31797), 13128 states have call predecessors, (31797), 13128 states have call successors, (31797) [2023-04-02 05:10:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258238 states to 258238 states and 433791 transitions. [2023-04-02 05:10:14,749 INFO L78 Accepts]: Start accepts. Automaton has 258238 states and 433791 transitions. Word has length 245 [2023-04-02 05:10:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:10:14,750 INFO L495 AbstractCegarLoop]: Abstraction has 258238 states and 433791 transitions. [2023-04-02 05:10:14,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 6 states have internal predecessors, (225), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:10:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 258238 states and 433791 transitions. [2023-04-02 05:10:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-04-02 05:10:14,755 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:10:14,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:10:14,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:10:14,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:10:14,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:10:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1639967830, now seen corresponding path program 1 times [2023-04-02 05:10:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:10:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504408134] [2023-04-02 05:10:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:10:14,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:10:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:10:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:10:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 05:10:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 05:10:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 05:10:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 05:10:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 05:10:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 05:10:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 05:10:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:10:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:10:15,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:10:15,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504408134] [2023-04-02 05:10:15,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504408134] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:10:15,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:10:15,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:10:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019261731] [2023-04-02 05:10:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:10:15,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:10:15,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:10:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:10:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:10:15,809 INFO L87 Difference]: Start difference. First operand 258238 states and 433791 transitions. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 6 states have internal predecessors, (226), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)