/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:22:22,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:22:22,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:22:22,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:22:22,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:22:22,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:22:22,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:22:22,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:22:22,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:22:22,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:22:22,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:22:22,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:22:22,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:22:22,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:22:22,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:22:22,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:22:22,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:22:22,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:22:22,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:22:22,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:22:22,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:22:22,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:22:22,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:22:22,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:22:22,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:22:22,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:22:22,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:22:22,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:22:22,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:22:22,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:22:22,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:22:22,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:22:22,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:22:22,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:22:22,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:22:22,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:22:22,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:22:22,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:22:22,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:22:22,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:22:22,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:22:22,344 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 05:22:22,371 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:22:22,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:22:22,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:22:22,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:22:22,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:22:22,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:22:22,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:22:22,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:22:22,374 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:22:22,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:22:22,374 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:22:22,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:22:22,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:22:22,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:22:22,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:22:22,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:22:22,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:22:22,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:22:22,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:22:22,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:22:22,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:22:22,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:22:22,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:22:22,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:22:22,377 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:22:22,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:22:22,377 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:22:22,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:22:22,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:22:22,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:22:22,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:22:22,621 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:22:22,621 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:22:22,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c [2023-04-02 05:22:23,726 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:22:23,924 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:22:23,925 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c [2023-04-02 05:22:23,937 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ba08131/6fd6a9c74aff4bd881e53b7f8482fb17/FLAG178f0c78a [2023-04-02 05:22:23,950 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ba08131/6fd6a9c74aff4bd881e53b7f8482fb17 [2023-04-02 05:22:23,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:22:23,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:22:23,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:22:23,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:22:23,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:22:23,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:22:23" (1/1) ... [2023-04-02 05:22:23,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574975ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:23, skipping insertion in model container [2023-04-02 05:22:23,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:22:23" (1/1) ... [2023-04-02 05:22:23,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:22:24,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:22:24,218 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c[26453,26466] [2023-04-02 05:22:24,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:22:24,233 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:22:24,312 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c[26453,26466] [2023-04-02 05:22:24,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:22:24,323 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:22:24,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24 WrapperNode [2023-04-02 05:22:24,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:22:24,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:22:24,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:22:24,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:22:24,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:22:24,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:22:24,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:22:24,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:22:24,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (1/1) ... [2023-04-02 05:22:24,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:22:24,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:22:24,454 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 05:22:24,463 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 05:22:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:22:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:22:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:22:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:22:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:22:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure node7 [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure node8 [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:22:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:22:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:22:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:22:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:22:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:22:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:22:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:22:24,611 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:22:24,614 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:22:25,048 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:22:25,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:22:25,059 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:22:25,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:22:25 BoogieIcfgContainer [2023-04-02 05:22:25,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:22:25,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:22:25,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:22:25,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:22:25,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:22:23" (1/3) ... [2023-04-02 05:22:25,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4784fa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:22:25, skipping insertion in model container [2023-04-02 05:22:25,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:24" (2/3) ... [2023-04-02 05:22:25,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4784fa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:22:25, skipping insertion in model container [2023-04-02 05:22:25,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:22:25" (3/3) ... [2023-04-02 05:22:25,069 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals.c [2023-04-02 05:22:25,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:22:25,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:22:25,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:22:25,138 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;@5607dec0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:22:25,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:22:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 147 states have (on average 1.7006802721088434) internal successors, (250), 148 states have internal predecessors, (250), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 05:22:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 05:22:25,151 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:25,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:22:25,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:25,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash 178680108, now seen corresponding path program 1 times [2023-04-02 05:22:25,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:25,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302027048] [2023-04-02 05:22:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:25,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:22:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:22:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:22:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:22:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:22:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:22:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:22:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:22:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:22:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:22:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:25,931 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 05:22:25,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:25,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302027048] [2023-04-02 05:22:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302027048] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:25,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:22:25,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548307109] [2023-04-02 05:22:25,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:25,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:22:25,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:25,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:22:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:22:25,971 INFO L87 Difference]: Start difference. First operand has 177 states, 147 states have (on average 1.7006802721088434) internal successors, (250), 148 states have internal predecessors, (250), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:22:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:27,143 INFO L93 Difference]: Finished difference Result 278 states and 419 transitions. [2023-04-02 05:22:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:22:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2023-04-02 05:22:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:27,150 INFO L225 Difference]: With dead ends: 278 [2023-04-02 05:22:27,150 INFO L226 Difference]: Without dead ends: 172 [2023-04-02 05:22:27,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:22:27,155 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 868 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:27,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 127 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:22:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-04-02 05:22:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-04-02 05:22:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 144 states have (on average 1.6875) internal successors, (243), 144 states have internal predecessors, (243), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 05:22:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 270 transitions. [2023-04-02 05:22:27,230 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 270 transitions. Word has length 72 [2023-04-02 05:22:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:27,230 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 270 transitions. [2023-04-02 05:22:27,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:22:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 270 transitions. [2023-04-02 05:22:27,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 05:22:27,233 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:27,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:22:27,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:22:27,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:27,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:27,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1439597358, now seen corresponding path program 1 times [2023-04-02 05:22:27,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:27,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610478934] [2023-04-02 05:22:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:27,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:22:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:22:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:22:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:22:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:22:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:22:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:22:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:22:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:22:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:22:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:27,754 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 05:22:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610478934] [2023-04-02 05:22:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610478934] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:27,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-02 05:22:27,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865903297] [2023-04-02 05:22:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:27,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 05:22:27,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 05:22:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:22:27,758 INFO L87 Difference]: Start difference. First operand 172 states and 270 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:22:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:30,161 INFO L93 Difference]: Finished difference Result 285 states and 431 transitions. [2023-04-02 05:22:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:22:30,161 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2023-04-02 05:22:30,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:30,163 INFO L225 Difference]: With dead ends: 285 [2023-04-02 05:22:30,163 INFO L226 Difference]: Without dead ends: 186 [2023-04-02 05:22:30,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:22:30,165 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 723 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:30,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 163 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:22:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-04-02 05:22:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2023-04-02 05:22:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 144 states have (on average 1.2638888888888888) internal successors, (182), 144 states have internal predecessors, (182), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 05:22:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 209 transitions. [2023-04-02 05:22:30,184 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 209 transitions. Word has length 72 [2023-04-02 05:22:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:30,184 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 209 transitions. [2023-04-02 05:22:30,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:22:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 209 transitions. [2023-04-02 05:22:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-02 05:22:30,187 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:30,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:22:30,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:22:30,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:30,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1667603198, now seen corresponding path program 1 times [2023-04-02 05:22:30,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:30,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226436333] [2023-04-02 05:22:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:30,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:30,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:22:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:22:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:22:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:22:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:22:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:22:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:22:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:22:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:31,346 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 05:22:31,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226436333] [2023-04-02 05:22:31,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226436333] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:31,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:31,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-04-02 05:22:31,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337864459] [2023-04-02 05:22:31,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:31,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 05:22:31,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 05:22:31,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:22:31,350 INFO L87 Difference]: Start difference. First operand 172 states and 209 transitions. Second operand has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 19 states have internal predecessors, (106), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:00,511 INFO L93 Difference]: Finished difference Result 2483 states and 3571 transitions. [2023-04-02 05:23:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 278 states. [2023-04-02 05:23:00,512 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 19 states have internal predecessors, (106), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 132 [2023-04-02 05:23:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:00,524 INFO L225 Difference]: With dead ends: 2483 [2023-04-02 05:23:00,525 INFO L226 Difference]: Without dead ends: 2390 [2023-04-02 05:23:00,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35940 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=10864, Invalid=78836, Unknown=0, NotChecked=0, Total=89700 [2023-04-02 05:23:00,553 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 5353 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 13380 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5372 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 13982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 13380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:00,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5372 Valid, 864 Invalid, 13982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [602 Valid, 13380 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-02 05:23:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2023-04-02 05:23:00,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 667. [2023-04-02 05:23:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 523 states have (on average 1.4091778202676863) internal successors, (737), 539 states have internal predecessors, (737), 64 states have call successors, (64), 64 states have call predecessors, (64), 79 states have return successors, (115), 63 states have call predecessors, (115), 63 states have call successors, (115) [2023-04-02 05:23:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 916 transitions. [2023-04-02 05:23:00,734 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 916 transitions. Word has length 132 [2023-04-02 05:23:00,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:00,735 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 916 transitions. [2023-04-02 05:23:00,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 19 states have internal predecessors, (106), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:00,735 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 916 transitions. [2023-04-02 05:23:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:23:00,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:00,742 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] [2023-04-02 05:23:00,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:23:00,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:00,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash -497153362, now seen corresponding path program 1 times [2023-04-02 05:23:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:00,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899934092] [2023-04-02 05:23:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:00,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:23:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:01,056 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 05:23:01,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:01,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899934092] [2023-04-02 05:23:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899934092] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:01,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:01,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:23:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133723529] [2023-04-02 05:23:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:01,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:23:01,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:23:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:23:01,058 INFO L87 Difference]: Start difference. First operand 667 states and 916 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-04-02 05:23:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:02,780 INFO L93 Difference]: Finished difference Result 1803 states and 2546 transitions. [2023-04-02 05:23:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 05:23:02,780 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 134 [2023-04-02 05:23:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:02,788 INFO L225 Difference]: With dead ends: 1803 [2023-04-02 05:23:02,788 INFO L226 Difference]: Without dead ends: 1215 [2023-04-02 05:23:02,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:23:02,798 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1137 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:02,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 144 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:23:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-04-02 05:23:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1213. [2023-04-02 05:23:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 935 states have (on average 1.4213903743315508) internal successors, (1329), 965 states have internal predecessors, (1329), 124 states have call successors, (124), 124 states have call predecessors, (124), 153 states have return successors, (237), 123 states have call predecessors, (237), 123 states have call successors, (237) [2023-04-02 05:23:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1690 transitions. [2023-04-02 05:23:03,012 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1690 transitions. Word has length 134 [2023-04-02 05:23:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:03,012 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1690 transitions. [2023-04-02 05:23:03,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-04-02 05:23:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1690 transitions. [2023-04-02 05:23:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:23:03,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:03,014 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] [2023-04-02 05:23:03,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:23:03,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:03,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:03,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1784855818, now seen corresponding path program 1 times [2023-04-02 05:23:03,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:03,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24333862] [2023-04-02 05:23:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:03,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:04,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:23:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:04,092 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 05:23:04,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:04,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24333862] [2023-04-02 05:23:04,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24333862] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:04,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:04,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-04-02 05:23:04,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103435640] [2023-04-02 05:23:04,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:04,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 05:23:04,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 05:23:04,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:23:04,096 INFO L87 Difference]: Start difference. First operand 1213 states and 1690 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 19 states have internal predecessors, (108), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:35,127 INFO L93 Difference]: Finished difference Result 6876 states and 9944 transitions. [2023-04-02 05:23:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2023-04-02 05:23:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 19 states have internal predecessors, (108), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 134 [2023-04-02 05:23:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:35,148 INFO L225 Difference]: With dead ends: 6876 [2023-04-02 05:23:35,148 INFO L226 Difference]: Without dead ends: 5742 [2023-04-02 05:23:35,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35638 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=10701, Invalid=77211, Unknown=0, NotChecked=0, Total=87912 [2023-04-02 05:23:35,158 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 6518 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 11374 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6537 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 12193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 11374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:35,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6537 Valid, 793 Invalid, 12193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [819 Valid, 11374 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-02 05:23:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2023-04-02 05:23:36,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5631. [2023-04-02 05:23:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5631 states, 4326 states have (on average 1.4674063800277393) internal successors, (6348), 4411 states have internal predecessors, (6348), 610 states have call successors, (610), 610 states have call predecessors, (610), 694 states have return successors, (1210), 609 states have call predecessors, (1210), 609 states have call successors, (1210) [2023-04-02 05:23:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 8168 transitions. [2023-04-02 05:23:36,165 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 8168 transitions. Word has length 134 [2023-04-02 05:23:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:36,166 INFO L495 AbstractCegarLoop]: Abstraction has 5631 states and 8168 transitions. [2023-04-02 05:23:36,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 19 states have internal predecessors, (108), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 8168 transitions. [2023-04-02 05:23:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:23:36,168 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:36,168 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] [2023-04-02 05:23:36,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:23:36,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:36,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:36,169 INFO L85 PathProgramCache]: Analyzing trace with hash -18078840, now seen corresponding path program 1 times [2023-04-02 05:23:36,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:36,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864363033] [2023-04-02 05:23:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:36,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:23:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:36,575 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 05:23:36,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864363033] [2023-04-02 05:23:36,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864363033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:36,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:36,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:23:36,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298582182] [2023-04-02 05:23:36,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:36,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:23:36,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:23:36,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:23:36,577 INFO L87 Difference]: Start difference. First operand 5631 states and 8168 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:40,264 INFO L93 Difference]: Finished difference Result 13340 states and 19405 transitions. [2023-04-02 05:23:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-02 05:23:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 135 [2023-04-02 05:23:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:40,301 INFO L225 Difference]: With dead ends: 13340 [2023-04-02 05:23:40,301 INFO L226 Difference]: Without dead ends: 7788 [2023-04-02 05:23:40,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 05:23:40,314 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1515 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:40,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 149 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:23:40,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7788 states. [2023-04-02 05:23:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7788 to 7784. [2023-04-02 05:23:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7784 states, 5953 states have (on average 1.4627918696455569) internal successors, (8708), 6090 states have internal predecessors, (8708), 847 states have call successors, (847), 847 states have call predecessors, (847), 983 states have return successors, (1700), 846 states have call predecessors, (1700), 846 states have call successors, (1700) [2023-04-02 05:23:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 11255 transitions. [2023-04-02 05:23:41,735 INFO L78 Accepts]: Start accepts. Automaton has 7784 states and 11255 transitions. Word has length 135 [2023-04-02 05:23:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:41,736 INFO L495 AbstractCegarLoop]: Abstraction has 7784 states and 11255 transitions. [2023-04-02 05:23:41,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7784 states and 11255 transitions. [2023-04-02 05:23:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:23:41,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:41,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:23:41,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:23:41,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:41,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1629346121, now seen corresponding path program 1 times [2023-04-02 05:23:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:41,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305237336] [2023-04-02 05:23:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:41,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:23:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,353 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 05:23:42,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305237336] [2023-04-02 05:23:42,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305237336] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:42,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:42,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-04-02 05:23:42,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215289618] [2023-04-02 05:23:42,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:42,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:23:42,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:42,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:23:42,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:23:42,355 INFO L87 Difference]: Start difference. First operand 7784 states and 11255 transitions. Second operand has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 9 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:46,403 INFO L93 Difference]: Finished difference Result 8344 states and 12569 transitions. [2023-04-02 05:23:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:23:46,404 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 9 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 135 [2023-04-02 05:23:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:46,443 INFO L225 Difference]: With dead ends: 8344 [2023-04-02 05:23:46,443 INFO L226 Difference]: Without dead ends: 8342 [2023-04-02 05:23:46,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 05:23:46,448 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 768 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:46,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 393 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:23:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2023-04-02 05:23:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 7856. [2023-04-02 05:23:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7856 states, 6001 states have (on average 1.4565905682386269) internal successors, (8741), 6146 states have internal predecessors, (8741), 855 states have call successors, (855), 855 states have call predecessors, (855), 999 states have return successors, (1724), 854 states have call predecessors, (1724), 854 states have call successors, (1724) [2023-04-02 05:23:48,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7856 states to 7856 states and 11320 transitions. [2023-04-02 05:23:48,017 INFO L78 Accepts]: Start accepts. Automaton has 7856 states and 11320 transitions. Word has length 135 [2023-04-02 05:23:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:48,017 INFO L495 AbstractCegarLoop]: Abstraction has 7856 states and 11320 transitions. [2023-04-02 05:23:48,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 9 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 7856 states and 11320 transitions. [2023-04-02 05:23:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:23:48,021 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:48,021 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] [2023-04-02 05:23:48,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:23:48,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:48,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:48,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1319375930, now seen corresponding path program 1 times [2023-04-02 05:23:48,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594133802] [2023-04-02 05:23:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:23:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:23:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:23:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:23:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:23:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:23:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:23:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:48,561 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 05:23:48,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:48,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594133802] [2023-04-02 05:23:48,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594133802] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:48,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:48,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:23:48,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059149641] [2023-04-02 05:23:48,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:48,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:23:48,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:23:48,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:23:48,563 INFO L87 Difference]: Start difference. First operand 7856 states and 11320 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:23:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:54,466 INFO L93 Difference]: Finished difference Result 16021 states and 23192 transitions. [2023-04-02 05:23:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:23:54,467 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:23:54,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:54,497 INFO L225 Difference]: With dead ends: 16021 [2023-04-02 05:23:54,497 INFO L226 Difference]: Without dead ends: 10349 [2023-04-02 05:23:54,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:23:54,509 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2810 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2810 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:54,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2810 Valid, 95 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:23:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10349 states. [2023-04-02 05:23:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10349 to 9119. [2023-04-02 05:23:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9119 states, 6969 states have (on average 1.4656335198737265) internal successors, (10214), 7156 states have internal predecessors, (10214), 982 states have call successors, (982), 982 states have call predecessors, (982), 1167 states have return successors, (1981), 980 states have call predecessors, (1981), 981 states have call successors, (1981) [2023-04-02 05:23:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9119 states to 9119 states and 13177 transitions. [2023-04-02 05:23:56,266 INFO L78 Accepts]: Start accepts. Automaton has 9119 states and 13177 transitions. Word has length 136 [2023-04-02 05:23:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:56,267 INFO L495 AbstractCegarLoop]: Abstraction has 9119 states and 13177 transitions. [2023-04-02 05:23:56,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:23:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 9119 states and 13177 transitions. [2023-04-02 05:23:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:23:56,271 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:56,271 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] [2023-04-02 05:23:56,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:23:56,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:56,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash 460874294, now seen corresponding path program 1 times [2023-04-02 05:23:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261484638] [2023-04-02 05:23:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:23:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:23:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:23:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:23:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:23:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:23:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:56,768 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 05:23:56,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:56,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261484638] [2023-04-02 05:23:56,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261484638] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:56,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:56,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:23:56,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254763545] [2023-04-02 05:23:56,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:56,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:23:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:23:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:23:56,770 INFO L87 Difference]: Start difference. First operand 9119 states and 13177 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:02,837 INFO L93 Difference]: Finished difference Result 24214 states and 35047 transitions. [2023-04-02 05:24:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:02,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:02,885 INFO L225 Difference]: With dead ends: 24214 [2023-04-02 05:24:02,885 INFO L226 Difference]: Without dead ends: 15180 [2023-04-02 05:24:02,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:02,902 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2340 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2340 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:02,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2340 Valid, 90 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:24:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15180 states. [2023-04-02 05:24:04,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15180 to 9046. [2023-04-02 05:24:04,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9046 states, 6912 states have (on average 1.46484375) internal successors, (10125), 7097 states have internal predecessors, (10125), 975 states have call successors, (975), 975 states have call predecessors, (975), 1158 states have return successors, (1967), 973 states have call predecessors, (1967), 974 states have call successors, (1967) [2023-04-02 05:24:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9046 states to 9046 states and 13067 transitions. [2023-04-02 05:24:04,830 INFO L78 Accepts]: Start accepts. Automaton has 9046 states and 13067 transitions. Word has length 136 [2023-04-02 05:24:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:04,831 INFO L495 AbstractCegarLoop]: Abstraction has 9046 states and 13067 transitions. [2023-04-02 05:24:04,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9046 states and 13067 transitions. [2023-04-02 05:24:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:04,834 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:04,834 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] [2023-04-02 05:24:04,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:24:04,834 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:04,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash 79712838, now seen corresponding path program 1 times [2023-04-02 05:24:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:04,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508944253] [2023-04-02 05:24:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:24:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:24:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:24:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:05,369 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 05:24:05,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:05,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508944253] [2023-04-02 05:24:05,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508944253] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:05,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363596502] [2023-04-02 05:24:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:05,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:05,370 INFO L87 Difference]: Start difference. First operand 9046 states and 13067 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:11,703 INFO L93 Difference]: Finished difference Result 23102 states and 33369 transitions. [2023-04-02 05:24:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:11,730 INFO L225 Difference]: With dead ends: 23102 [2023-04-02 05:24:11,730 INFO L226 Difference]: Without dead ends: 14161 [2023-04-02 05:24:11,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:11,743 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2174 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:11,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 95 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:24:11,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14161 states. [2023-04-02 05:24:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14161 to 8992. [2023-04-02 05:24:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8992 states, 6870 states have (on average 1.4641921397379913) internal successors, (10059), 7053 states have internal predecessors, (10059), 970 states have call successors, (970), 970 states have call predecessors, (970), 1151 states have return successors, (1958), 968 states have call predecessors, (1958), 969 states have call successors, (1958) [2023-04-02 05:24:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8992 states to 8992 states and 12987 transitions. [2023-04-02 05:24:13,696 INFO L78 Accepts]: Start accepts. Automaton has 8992 states and 12987 transitions. Word has length 136 [2023-04-02 05:24:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:13,696 INFO L495 AbstractCegarLoop]: Abstraction has 8992 states and 12987 transitions. [2023-04-02 05:24:13,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8992 states and 12987 transitions. [2023-04-02 05:24:13,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:13,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:13,699 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] [2023-04-02 05:24:13,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:24:13,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:13,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1968766262, now seen corresponding path program 1 times [2023-04-02 05:24:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087550413] [2023-04-02 05:24:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:13,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:24:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:24:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,195 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 05:24:14,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087550413] [2023-04-02 05:24:14,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087550413] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:14,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:14,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:14,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141653517] [2023-04-02 05:24:14,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:14,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:14,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:14,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:14,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:14,196 INFO L87 Difference]: Start difference. First operand 8992 states and 12987 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:20,671 INFO L93 Difference]: Finished difference Result 22039 states and 31775 transitions. [2023-04-02 05:24:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:20,671 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:20,705 INFO L225 Difference]: With dead ends: 22039 [2023-04-02 05:24:20,706 INFO L226 Difference]: Without dead ends: 13170 [2023-04-02 05:24:20,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:20,724 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2653 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:20,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2653 Valid, 95 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:24:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13170 states. [2023-04-02 05:24:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13170 to 8959. [2023-04-02 05:24:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8959 states, 6844 states have (on average 1.4636177673874926) internal successors, (10017), 7026 states have internal predecessors, (10017), 967 states have call successors, (967), 967 states have call predecessors, (967), 1147 states have return successors, (1953), 965 states have call predecessors, (1953), 966 states have call successors, (1953) [2023-04-02 05:24:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8959 states to 8959 states and 12937 transitions. [2023-04-02 05:24:22,804 INFO L78 Accepts]: Start accepts. Automaton has 8959 states and 12937 transitions. Word has length 136 [2023-04-02 05:24:22,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:22,805 INFO L495 AbstractCegarLoop]: Abstraction has 8959 states and 12937 transitions. [2023-04-02 05:24:22,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8959 states and 12937 transitions. [2023-04-02 05:24:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:22,807 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:22,807 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] [2023-04-02 05:24:22,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:24:22,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:22,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1775077578, now seen corresponding path program 1 times [2023-04-02 05:24:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:22,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870326078] [2023-04-02 05:24:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,304 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 05:24:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870326078] [2023-04-02 05:24:23,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870326078] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:23,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:23,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584766209] [2023-04-02 05:24:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:23,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:23,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:23,306 INFO L87 Difference]: Start difference. First operand 8959 states and 12937 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:28,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:28,854 INFO L93 Difference]: Finished difference Result 20082 states and 28864 transitions. [2023-04-02 05:24:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:28,854 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:28,899 INFO L225 Difference]: With dead ends: 20082 [2023-04-02 05:24:28,899 INFO L226 Difference]: Without dead ends: 11282 [2023-04-02 05:24:28,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:28,918 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2957 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2957 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:28,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2957 Valid, 90 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:24:28,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11282 states. [2023-04-02 05:24:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11282 to 8976. [2023-04-02 05:24:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8976 states, 6855 states have (on average 1.462727935813275) internal successors, (10027), 7039 states have internal predecessors, (10027), 969 states have call successors, (969), 969 states have call predecessors, (969), 1151 states have return successors, (1958), 967 states have call predecessors, (1958), 968 states have call successors, (1958) [2023-04-02 05:24:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 12954 transitions. [2023-04-02 05:24:30,896 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 12954 transitions. Word has length 136 [2023-04-02 05:24:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:30,896 INFO L495 AbstractCegarLoop]: Abstraction has 8976 states and 12954 transitions. [2023-04-02 05:24:30,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:30,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 12954 transitions. [2023-04-02 05:24:30,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:30,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:30,898 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] [2023-04-02 05:24:30,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:24:30,898 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:30,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash -738709562, now seen corresponding path program 1 times [2023-04-02 05:24:30,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:30,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939901896] [2023-04-02 05:24:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:30,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:24:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:31,358 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 05:24:31,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:31,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939901896] [2023-04-02 05:24:31,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939901896] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:31,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:31,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521217563] [2023-04-02 05:24:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:31,360 INFO L87 Difference]: Start difference. First operand 8976 states and 12954 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:36,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:36,314 INFO L93 Difference]: Finished difference Result 19184 states and 27518 transitions. [2023-04-02 05:24:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:36,315 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:36,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:36,359 INFO L225 Difference]: With dead ends: 19184 [2023-04-02 05:24:36,359 INFO L226 Difference]: Without dead ends: 10405 [2023-04-02 05:24:36,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:36,390 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2294 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:36,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 95 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:24:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10405 states. [2023-04-02 05:24:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10405 to 9003. [2023-04-02 05:24:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9003 states, 6875 states have (on average 1.4619636363636364) internal successors, (10051), 7060 states have internal predecessors, (10051), 972 states have call successors, (972), 972 states have call predecessors, (972), 1155 states have return successors, (1963), 970 states have call predecessors, (1963), 971 states have call successors, (1963) [2023-04-02 05:24:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 12986 transitions. [2023-04-02 05:24:38,548 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 12986 transitions. Word has length 136 [2023-04-02 05:24:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:38,549 INFO L495 AbstractCegarLoop]: Abstraction has 9003 states and 12986 transitions. [2023-04-02 05:24:38,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 12986 transitions. [2023-04-02 05:24:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:38,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:38,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:24:38,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:24:38,551 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:38,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:38,551 INFO L85 PathProgramCache]: Analyzing trace with hash -858703434, now seen corresponding path program 1 times [2023-04-02 05:24:38,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:38,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180225935] [2023-04-02 05:24:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:38,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:39,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:39,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:24:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:39,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:24:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:39,098 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 05:24:39,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:39,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180225935] [2023-04-02 05:24:39,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180225935] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:39,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:39,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540488768] [2023-04-02 05:24:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:39,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:39,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:39,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:39,100 INFO L87 Difference]: Start difference. First operand 9003 states and 12986 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:43,941 INFO L93 Difference]: Finished difference Result 18342 states and 26270 transitions. [2023-04-02 05:24:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:43,946 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:43,969 INFO L225 Difference]: With dead ends: 18342 [2023-04-02 05:24:43,970 INFO L226 Difference]: Without dead ends: 9572 [2023-04-02 05:24:43,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:43,983 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2699 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2699 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:43,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2699 Valid, 90 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:24:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9572 states. [2023-04-02 05:24:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9572 to 9015. [2023-04-02 05:24:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 6885 states have (on average 1.4612926652142337) internal successors, (10061), 7068 states have internal predecessors, (10061), 974 states have call successors, (974), 974 states have call predecessors, (974), 1155 states have return successors, (1963), 972 states have call predecessors, (1963), 973 states have call successors, (1963) [2023-04-02 05:24:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 12998 transitions. [2023-04-02 05:24:46,009 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 12998 transitions. Word has length 136 [2023-04-02 05:24:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:46,009 INFO L495 AbstractCegarLoop]: Abstraction has 9015 states and 12998 transitions. [2023-04-02 05:24:46,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 12998 transitions. [2023-04-02 05:24:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:46,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:46,011 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] [2023-04-02 05:24:46,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:24:46,011 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:46,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash 293945798, now seen corresponding path program 1 times [2023-04-02 05:24:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:46,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808425573] [2023-04-02 05:24:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:24:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:46,429 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 05:24:46,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:46,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808425573] [2023-04-02 05:24:46,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808425573] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:46,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:46,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466129306] [2023-04-02 05:24:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:46,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:46,431 INFO L87 Difference]: Start difference. First operand 9015 states and 12998 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:52,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:52,116 INFO L93 Difference]: Finished difference Result 21193 states and 30469 transitions. [2023-04-02 05:24:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:52,117 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:52,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:52,158 INFO L225 Difference]: With dead ends: 21193 [2023-04-02 05:24:52,158 INFO L226 Difference]: Without dead ends: 12335 [2023-04-02 05:24:52,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:52,176 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2893 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:52,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 90 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:24:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12335 states. [2023-04-02 05:24:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12335 to 9371. [2023-04-02 05:24:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9371 states, 7148 states have (on average 1.4634862898712926) internal successors, (10461), 7360 states have internal predecessors, (10461), 1006 states have call successors, (1006), 1006 states have call predecessors, (1006), 1216 states have return successors, (2052), 1004 states have call predecessors, (2052), 1005 states have call successors, (2052) [2023-04-02 05:24:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9371 states to 9371 states and 13519 transitions. [2023-04-02 05:24:54,409 INFO L78 Accepts]: Start accepts. Automaton has 9371 states and 13519 transitions. Word has length 136 [2023-04-02 05:24:54,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:54,409 INFO L495 AbstractCegarLoop]: Abstraction has 9371 states and 13519 transitions. [2023-04-02 05:24:54,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:54,409 INFO L276 IsEmpty]: Start isEmpty. Operand 9371 states and 13519 transitions. [2023-04-02 05:24:54,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-02 05:24:54,410 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:54,410 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] [2023-04-02 05:24:54,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:24:54,411 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:54,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1658387286, now seen corresponding path program 1 times [2023-04-02 05:24:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:54,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241420800] [2023-04-02 05:24:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:24:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:54,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:24:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:24:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:24:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:55,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:24:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:24:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:24:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:24:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:55,096 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 05:24:55,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:55,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241420800] [2023-04-02 05:24:55,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241420800] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:55,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:55,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:24:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141791237] [2023-04-02 05:24:55,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:55,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:24:55,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:55,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:24:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:24:55,099 INFO L87 Difference]: Start difference. First operand 9371 states and 13519 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:25:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:01,861 INFO L93 Difference]: Finished difference Result 19923 states and 28918 transitions. [2023-04-02 05:25:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 05:25:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 137 [2023-04-02 05:25:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:01,888 INFO L225 Difference]: With dead ends: 19923 [2023-04-02 05:25:01,888 INFO L226 Difference]: Without dead ends: 13086 [2023-04-02 05:25:01,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=601, Invalid=2155, Unknown=0, NotChecked=0, Total=2756 [2023-04-02 05:25:01,902 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2651 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:01,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2670 Valid, 151 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:25:01,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13086 states. [2023-04-02 05:25:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13086 to 11792. [2023-04-02 05:25:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11792 states, 9004 states have (on average 1.462239004886717) internal successors, (13166), 9261 states have internal predecessors, (13166), 1266 states have call successors, (1266), 1266 states have call predecessors, (1266), 1521 states have return successors, (2552), 1264 states have call predecessors, (2552), 1265 states have call successors, (2552) [2023-04-02 05:25:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11792 states to 11792 states and 16984 transitions. [2023-04-02 05:25:04,715 INFO L78 Accepts]: Start accepts. Automaton has 11792 states and 16984 transitions. Word has length 137 [2023-04-02 05:25:04,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:04,715 INFO L495 AbstractCegarLoop]: Abstraction has 11792 states and 16984 transitions. [2023-04-02 05:25:04,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:25:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 11792 states and 16984 transitions. [2023-04-02 05:25:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-02 05:25:04,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:04,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:04,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:25:04,722 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:04,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2006852655, now seen corresponding path program 1 times [2023-04-02 05:25:04,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:04,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842088618] [2023-04-02 05:25:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:04,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:25:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:25:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:25:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:25:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:25:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:25:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:25:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:25:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:25:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:25:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:25:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 05:25:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:25:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 05:25:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 05:25:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 05:25:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 05:25:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 05:25:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 05:25:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 05:25:05,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:05,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842088618] [2023-04-02 05:25:05,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842088618] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:25:05,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440360326] [2023-04-02 05:25:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:05,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:25:05,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:25:05,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:25:05,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:25:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:06,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:25:06,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:25:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 05:25:08,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:25:08,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440360326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:08,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:25:08,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [25] total 47 [2023-04-02 05:25:08,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883621699] [2023-04-02 05:25:08,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:08,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 05:25:08,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:08,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 05:25:08,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:25:08,447 INFO L87 Difference]: Start difference. First operand 11792 states and 16984 transitions. Second operand has 24 states, 24 states have (on average 6.083333333333333) internal successors, (146), 24 states have internal predecessors, (146), 4 states have call successors, (23), 18 states have call predecessors, (23), 18 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-02 05:25:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:14,893 INFO L93 Difference]: Finished difference Result 20235 states and 29244 transitions. [2023-04-02 05:25:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:25:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.083333333333333) internal successors, (146), 24 states have internal predecessors, (146), 4 states have call successors, (23), 18 states have call predecessors, (23), 18 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 194 [2023-04-02 05:25:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:14,931 INFO L225 Difference]: With dead ends: 20235 [2023-04-02 05:25:14,931 INFO L226 Difference]: Without dead ends: 19126 [2023-04-02 05:25:14,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=241, Invalid=2111, Unknown=0, NotChecked=0, Total=2352 [2023-04-02 05:25:14,938 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 2781 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 4943 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2787 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 5136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 4943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:14,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2787 Valid, 1697 Invalid, 5136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 4943 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 05:25:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2023-04-02 05:25:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19110. [2023-04-02 05:25:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19110 states, 14595 states have (on average 1.465433367591641) internal successors, (21388), 14973 states have internal predecessors, (21388), 2069 states have call successors, (2069), 2069 states have call predecessors, (2069), 2445 states have return successors, (4177), 2067 states have call predecessors, (4177), 2068 states have call successors, (4177) [2023-04-02 05:25:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19110 states to 19110 states and 27634 transitions. [2023-04-02 05:25:19,266 INFO L78 Accepts]: Start accepts. Automaton has 19110 states and 27634 transitions. Word has length 194 [2023-04-02 05:25:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:19,267 INFO L495 AbstractCegarLoop]: Abstraction has 19110 states and 27634 transitions. [2023-04-02 05:25:19,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.083333333333333) internal successors, (146), 24 states have internal predecessors, (146), 4 states have call successors, (23), 18 states have call predecessors, (23), 18 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-02 05:25:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 19110 states and 27634 transitions. [2023-04-02 05:25:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-02 05:25:19,273 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:19,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:19,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 05:25:19,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-02 05:25:19,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:19,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:19,476 INFO L85 PathProgramCache]: Analyzing trace with hash -226602431, now seen corresponding path program 1 times [2023-04-02 05:25:19,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:19,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987370911] [2023-04-02 05:25:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:25:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:25:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:25:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:25:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:25:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:25:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:25:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:25:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:25:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:25:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:25:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 05:25:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:25:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 05:25:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 05:25:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 05:25:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 05:25:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 05:25:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 05:25:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 05:25:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987370911] [2023-04-02 05:25:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987370911] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:25:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327109689] [2023-04-02 05:25:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:20,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:25:20,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:25:20,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:25:20,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:25:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:20,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:25:20,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:25:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:25:22,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:25:22,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327109689] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:22,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:25:22,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [25] total 46 [2023-04-02 05:25:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603811128] [2023-04-02 05:25:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:22,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 05:25:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:22,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 05:25:22,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1875, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:25:22,991 INFO L87 Difference]: Start difference. First operand 19110 states and 27634 transitions. Second operand has 23 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 4 states have call successors, (22), 17 states have call predecessors, (22), 17 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-02 05:25:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:31,675 INFO L93 Difference]: Finished difference Result 30172 states and 43632 transitions. [2023-04-02 05:25:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:25:31,676 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 4 states have call successors, (22), 17 states have call predecessors, (22), 17 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 194 [2023-04-02 05:25:31,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:31,848 INFO L225 Difference]: With dead ends: 30172 [2023-04-02 05:25:31,848 INFO L226 Difference]: Without dead ends: 27525 [2023-04-02 05:25:31,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=237, Invalid=2019, Unknown=0, NotChecked=0, Total=2256 [2023-04-02 05:25:31,880 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 2439 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 5503 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 5677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 5503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:31,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 1805 Invalid, 5677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 5503 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 05:25:31,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27525 states. [2023-04-02 05:25:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27525 to 27509. [2023-04-02 05:25:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27509 states, 21010 states have (on average 1.4664921465968586) internal successors, (30811), 21548 states have internal predecessors, (30811), 2981 states have call successors, (2981), 2981 states have call predecessors, (2981), 3517 states have return successors, (6026), 2979 states have call predecessors, (6026), 2980 states have call successors, (6026) [2023-04-02 05:25:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27509 states to 27509 states and 39818 transitions. [2023-04-02 05:25:38,716 INFO L78 Accepts]: Start accepts. Automaton has 27509 states and 39818 transitions. Word has length 194 [2023-04-02 05:25:38,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:38,716 INFO L495 AbstractCegarLoop]: Abstraction has 27509 states and 39818 transitions. [2023-04-02 05:25:38,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 4 states have call successors, (22), 17 states have call predecessors, (22), 17 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-02 05:25:38,716 INFO L276 IsEmpty]: Start isEmpty. Operand 27509 states and 39818 transitions. [2023-04-02 05:25:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-02 05:25:38,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:38,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:38,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 05:25:38,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-02 05:25:38,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:38,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash -607763887, now seen corresponding path program 1 times [2023-04-02 05:25:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:38,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995043993] [2023-04-02 05:25:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:25:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:25:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:25:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:25:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:25:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:25:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:25:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:25:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:25:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:25:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:25:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 05:25:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 05:25:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 05:25:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 05:25:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 05:25:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 05:25:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 05:25:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 05:25:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 05:25:39,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:39,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995043993] [2023-04-02 05:25:39,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995043993] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:25:39,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238647939] [2023-04-02 05:25:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:39,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:25:39,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:25:39,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:25:39,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:25:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:40,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:25:40,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:25:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:25:42,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:25:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238647939] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:42,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:25:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [25] total 45 [2023-04-02 05:25:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221362445] [2023-04-02 05:25:42,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:42,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:25:42,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:25:42,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 05:25:42,337 INFO L87 Difference]: Start difference. First operand 27509 states and 39818 transitions. Second operand has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 4 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-04-02 05:25:52,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:52,450 INFO L93 Difference]: Finished difference Result 39756 states and 57523 transitions. [2023-04-02 05:25:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:25:52,450 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 4 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 194 [2023-04-02 05:25:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:52,542 INFO L225 Difference]: With dead ends: 39756 [2023-04-02 05:25:52,542 INFO L226 Difference]: Without dead ends: 34467 [2023-04-02 05:25:52,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:25:52,558 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 2490 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:52,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2496 Valid, 1566 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 05:25:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34467 states. [2023-04-02 05:26:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34467 to 34451. [2023-04-02 05:26:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34451 states, 26316 states have (on average 1.4673962608299134) internal successors, (38616), 26976 states have internal predecessors, (38616), 3738 states have call successors, (3738), 3738 states have call predecessors, (3738), 4396 states have return successors, (7560), 3736 states have call predecessors, (7560), 3737 states have call successors, (7560) [2023-04-02 05:26:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34451 states to 34451 states and 49914 transitions. [2023-04-02 05:26:01,236 INFO L78 Accepts]: Start accepts. Automaton has 34451 states and 49914 transitions. Word has length 194 [2023-04-02 05:26:01,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:26:01,237 INFO L495 AbstractCegarLoop]: Abstraction has 34451 states and 49914 transitions. [2023-04-02 05:26:01,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 4 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-04-02 05:26:01,237 INFO L276 IsEmpty]: Start isEmpty. Operand 34451 states and 49914 transitions. [2023-04-02 05:26:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-02 05:26:01,246 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:26:01,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:26:01,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 05:26:01,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:26:01,454 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:26:01,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:26:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1281289537, now seen corresponding path program 1 times [2023-04-02 05:26:01,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:26:01,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292400725] [2023-04-02 05:26:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:26:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:26:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:26:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:26:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:26:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:26:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:26:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:26:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:26:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:26:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:26:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:26:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:26:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:26:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:26:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:26:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 05:26:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 05:26:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-02 05:26:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 05:26:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 05:26:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 05:26:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 05:26:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 05:26:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 05:26:02,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:26:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292400725] [2023-04-02 05:26:02,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292400725] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:26:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850674122] [2023-04-02 05:26:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:26:02,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:26:02,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:26:02,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:26:02,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 05:26:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:02,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:26:02,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:26:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:26:04,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:26:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850674122] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:26:04,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:26:04,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [25] total 44 [2023-04-02 05:26:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488541837] [2023-04-02 05:26:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:26:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:26:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:26:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:26:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 05:26:04,630 INFO L87 Difference]: Start difference. First operand 34451 states and 49914 transitions. Second operand has 21 states, 21 states have (on average 6.523809523809524) internal successors, (137), 21 states have internal predecessors, (137), 4 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-04-02 05:26:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:26:16,438 INFO L93 Difference]: Finished difference Result 49358 states and 71450 transitions. [2023-04-02 05:26:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:26:16,438 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.523809523809524) internal successors, (137), 21 states have internal predecessors, (137), 4 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 194 [2023-04-02 05:26:16,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:26:16,525 INFO L225 Difference]: With dead ends: 49358 [2023-04-02 05:26:16,525 INFO L226 Difference]: Without dead ends: 39946 [2023-04-02 05:26:16,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:26:16,546 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2514 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 4049 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 4217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 4049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:26:16,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 1660 Invalid, 4217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 4049 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 05:26:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39946 states. [2023-04-02 05:26:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39946 to 39930. [2023-04-02 05:26:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39930 states, 30507 states have (on average 1.4681548497066248) internal successors, (44789), 31255 states have internal predecessors, (44789), 4338 states have call successors, (4338), 4338 states have call predecessors, (4338), 5084 states have return successors, (8775), 4336 states have call predecessors, (8775), 4337 states have call successors, (8775) [2023-04-02 05:26:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39930 states to 39930 states and 57902 transitions. [2023-04-02 05:26:26,895 INFO L78 Accepts]: Start accepts. Automaton has 39930 states and 57902 transitions. Word has length 194 [2023-04-02 05:26:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:26:26,896 INFO L495 AbstractCegarLoop]: Abstraction has 39930 states and 57902 transitions. [2023-04-02 05:26:26,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.523809523809524) internal successors, (137), 21 states have internal predecessors, (137), 4 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-04-02 05:26:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 39930 states and 57902 transitions. [2023-04-02 05:26:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-02 05:26:26,903 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:26:26,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:26:26,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 05:26:27,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:26:27,111 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:26:27,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:26:27,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1832412993, now seen corresponding path program 1 times [2023-04-02 05:26:27,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:26:27,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989381001] [2023-04-02 05:26:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:26:27,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:26:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:26:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:26:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:26:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:26:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:26:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:26:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:26:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:26:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:26:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:26:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:26:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:26:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:26:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:26:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 05:26:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 05:26:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-02 05:26:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 05:26:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 05:26:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 05:26:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:28,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 05:26:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 05:26:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 05:26:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:26:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989381001] [2023-04-02 05:26:28,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989381001] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:26:28,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047474268] [2023-04-02 05:26:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:26:28,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:26:28,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:26:28,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:26:28,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 05:26:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:28,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:26:28,365 INFO L285 TraceCheckSpWp]: Computing forward predicates...