/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.8.1.ufo.BOUNDED-16.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:21:07,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:21:07,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:21:07,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:21:07,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:21:07,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:21:07,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:21:07,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:21:07,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:21:07,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:21:07,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:21:07,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:21:07,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:21:07,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:21:07,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:21:07,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:21:07,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:21:07,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:21:07,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:21:07,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:21:07,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:21:07,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:21:07,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:21:07,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:21:07,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:21:07,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:21:07,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:21:07,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:21:07,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:21:07,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:21:07,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:21:07,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:21:07,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:21:07,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:21:07,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:21:07,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:21:07,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:21:07,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:21:07,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:21:07,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:21:07,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:21:07,569 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 05:21:07,588 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:21:07,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:21:07,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:21:07,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:21:07,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:21:07,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:21:07,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:21:07,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:21:07,594 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:21:07,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:21:07,595 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:21:07,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:21:07,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:21:07,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:21:07,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:21:07,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:21:07,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:21:07,596 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:21:07,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:21:07,596 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:21:07,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:21:07,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:21:07,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:21:07,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:21:07,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:21:07,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:21:07,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:21:07,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:21:07,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:21:07,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:21:07,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:21:07,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:21:07,598 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:21:07,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:21:07,598 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:21:07,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:21:07,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:21:07,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:21:07,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:21:07,872 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:21:07,873 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:21:07,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2023-04-02 05:21:09,123 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:21:09,353 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:21:09,354 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2023-04-02 05:21:09,370 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/846c2821b/9a375c8377074baab3c2c91397f2cf42/FLAG53011ad1e [2023-04-02 05:21:09,389 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/846c2821b/9a375c8377074baab3c2c91397f2cf42 [2023-04-02 05:21:09,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:21:09,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:21:09,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:21:09,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:21:09,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:21:09,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8073dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09, skipping insertion in model container [2023-04-02 05:21:09,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:21:09,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:21:09,683 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.8.1.ufo.BOUNDED-16.pals.c[26490,26503] [2023-04-02 05:21:09,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:21:09,699 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:21:09,764 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.8.1.ufo.BOUNDED-16.pals.c[26490,26503] [2023-04-02 05:21:09,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:21:09,780 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:21:09,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09 WrapperNode [2023-04-02 05:21:09,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:21:09,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:21:09,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:21:09,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:21:09,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,831 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:21:09,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:21:09,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:21:09,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:21:09,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (1/1) ... [2023-04-02 05:21:09,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:21:09,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:09,871 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 05:21:09,882 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 05:21:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:21:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:21:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:21:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:21:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:21:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:21:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:21:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:21:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:21:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-02 05:21:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure node7 [2023-04-02 05:21:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure node8 [2023-04-02 05:21:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:21:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:21:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:21:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:21:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:21:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:21:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:21:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:21:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:21:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:21:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:21:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:21:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:21:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:21:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:21:10,114 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:21:10,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:21:10,734 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:21:10,742 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:21:10,743 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:21:10,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:21:10 BoogieIcfgContainer [2023-04-02 05:21:10,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:21:10,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:21:10,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:21:10,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:21:10,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:21:09" (1/3) ... [2023-04-02 05:21:10,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e3991d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:21:10, skipping insertion in model container [2023-04-02 05:21:10,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:21:09" (2/3) ... [2023-04-02 05:21:10,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e3991d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:21:10, skipping insertion in model container [2023-04-02 05:21:10,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:21:10" (3/3) ... [2023-04-02 05:21:10,754 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c [2023-04-02 05:21:10,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:21:10,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:21:10,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:21:10,836 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;@1f98bab7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:21:10,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:21:10,841 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 05:21:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 05:21:10,852 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:10,853 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 05:21:10,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:10,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash 178680108, now seen corresponding path program 1 times [2023-04-02 05:21:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:10,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388972265] [2023-04-02 05:21:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:10,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:21:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:21:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:21:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:21:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:21:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:21:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:21:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:21:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:21:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:21:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,841 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 05:21:11,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388972265] [2023-04-02 05:21:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388972265] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:11,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:11,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:21:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720385502] [2023-04-02 05:21:11,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:11,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:21:11,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:11,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:21:11,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:21:11,886 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 05:21:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:13,603 INFO L93 Difference]: Finished difference Result 278 states and 419 transitions. [2023-04-02 05:21:13,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:21:13,606 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 05:21:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:13,615 INFO L225 Difference]: With dead ends: 278 [2023-04-02 05:21:13,616 INFO L226 Difference]: Without dead ends: 172 [2023-04-02 05:21:13,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:21:13,635 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 868 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:13,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 127 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:21:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-04-02 05:21:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-04-02 05:21:13,705 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 05:21:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 270 transitions. [2023-04-02 05:21:13,708 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 270 transitions. Word has length 72 [2023-04-02 05:21:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:13,708 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 270 transitions. [2023-04-02 05:21:13,709 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 05:21:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 270 transitions. [2023-04-02 05:21:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 05:21:13,711 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:13,712 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 05:21:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:21:13,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:13,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1439597358, now seen corresponding path program 1 times [2023-04-02 05:21:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781567366] [2023-04-02 05:21:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:21:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:21:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:21:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:21:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:21:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:21:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:21:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:21:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:21:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:21:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:14,421 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 05:21:14,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781567366] [2023-04-02 05:21:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781567366] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:14,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-02 05:21:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117720520] [2023-04-02 05:21:14,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:14,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 05:21:14,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:14,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 05:21:14,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:21:14,427 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 05:21:17,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:17,270 INFO L93 Difference]: Finished difference Result 285 states and 431 transitions. [2023-04-02 05:21:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:21:17,277 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 05:21:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:17,285 INFO L225 Difference]: With dead ends: 285 [2023-04-02 05:21:17,286 INFO L226 Difference]: Without dead ends: 186 [2023-04-02 05:21:17,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:21:17,294 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 723 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:17,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 163 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 05:21:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-04-02 05:21:17,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2023-04-02 05:21:17,330 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 05:21:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 209 transitions. [2023-04-02 05:21:17,331 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 209 transitions. Word has length 72 [2023-04-02 05:21:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:17,331 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 209 transitions. [2023-04-02 05:21:17,332 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 05:21:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 209 transitions. [2023-04-02 05:21:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-02 05:21:17,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:17,335 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 05:21:17,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:21:17,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:17,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:17,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1667603198, now seen corresponding path program 1 times [2023-04-02 05:21:17,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:17,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389902659] [2023-04-02 05:21:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:17,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:21:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:21:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:21:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:21:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:21:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:21:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:21:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:21:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:18,876 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 05:21:18,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:18,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389902659] [2023-04-02 05:21:18,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389902659] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:18,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:18,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-04-02 05:21:18,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213056847] [2023-04-02 05:21:18,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:18,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 05:21:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 05:21:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:21:18,881 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 05:21:54,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:54,667 INFO L93 Difference]: Finished difference Result 2483 states and 3571 transitions. [2023-04-02 05:21:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 278 states. [2023-04-02 05:21:54,668 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 05:21:54,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:54,686 INFO L225 Difference]: With dead ends: 2483 [2023-04-02 05:21:54,686 INFO L226 Difference]: Without dead ends: 2390 [2023-04-02 05:21:54,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35940 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=10864, Invalid=78836, Unknown=0, NotChecked=0, Total=89700 [2023-04-02 05:21:54,715 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 5353 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 13380 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s 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, 8.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:54,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5372 Valid, 864 Invalid, 13982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [602 Valid, 13380 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-02 05:21:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2023-04-02 05:21:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 667. [2023-04-02 05:21:54,896 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 05:21:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 916 transitions. [2023-04-02 05:21:54,900 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 916 transitions. Word has length 132 [2023-04-02 05:21:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:54,900 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 916 transitions. [2023-04-02 05:21:54,901 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 05:21:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 916 transitions. [2023-04-02 05:21:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:21:54,904 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:54,904 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 05:21:54,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:21:54,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:54,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:54,905 INFO L85 PathProgramCache]: Analyzing trace with hash -497153362, now seen corresponding path program 1 times [2023-04-02 05:21:54,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:54,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716170835] [2023-04-02 05:21:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:54,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:21:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:21:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:21:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:21:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:21:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:21:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:21:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:21:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:55,303 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 05:21:55,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716170835] [2023-04-02 05:21:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716170835] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:21:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018043189] [2023-04-02 05:21:55,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:55,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:21:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:21:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:21:55,306 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 05:21:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:57,762 INFO L93 Difference]: Finished difference Result 1803 states and 2546 transitions. [2023-04-02 05:21:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 05:21:57,762 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 05:21:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:57,768 INFO L225 Difference]: With dead ends: 1803 [2023-04-02 05:21:57,768 INFO L226 Difference]: Without dead ends: 1215 [2023-04-02 05:21:57,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:21:57,772 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1137 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:57,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 144 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:21:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-04-02 05:21:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1213. [2023-04-02 05:21:58,030 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 05:21:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1690 transitions. [2023-04-02 05:21:58,035 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1690 transitions. Word has length 134 [2023-04-02 05:21:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:58,036 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1690 transitions. [2023-04-02 05:21:58,036 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 05:21:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1690 transitions. [2023-04-02 05:21:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:21:58,039 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:58,039 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 05:21:58,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:21:58,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:58,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1784855818, now seen corresponding path program 1 times [2023-04-02 05:21:58,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:58,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598452631] [2023-04-02 05:21:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:58,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:58,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:21:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:21:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:21:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:21:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:21:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:21:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:21:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:21:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:59,558 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 05:21:59,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598452631] [2023-04-02 05:21:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598452631] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:59,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:21:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-04-02 05:21:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029549846] [2023-04-02 05:21:59,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:59,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 05:21:59,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:59,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 05:21:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:21:59,563 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 05:22:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:38,577 INFO L93 Difference]: Finished difference Result 6876 states and 9944 transitions. [2023-04-02 05:22:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2023-04-02 05:22:38,579 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 05:22:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:38,605 INFO L225 Difference]: With dead ends: 6876 [2023-04-02 05:22:38,606 INFO L226 Difference]: Without dead ends: 5742 [2023-04-02 05:22:38,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35638 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=10701, Invalid=77211, Unknown=0, NotChecked=0, Total=87912 [2023-04-02 05:22:38,621 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 6518 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 11374 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s 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, 7.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:38,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6537 Valid, 793 Invalid, 12193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [819 Valid, 11374 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-04-02 05:22:38,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2023-04-02 05:22:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5631. [2023-04-02 05:22:39,987 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 05:22:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 8168 transitions. [2023-04-02 05:22:40,007 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 8168 transitions. Word has length 134 [2023-04-02 05:22:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:40,007 INFO L495 AbstractCegarLoop]: Abstraction has 5631 states and 8168 transitions. [2023-04-02 05:22:40,008 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 05:22:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 8168 transitions. [2023-04-02 05:22:40,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:22:40,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:40,011 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] [2023-04-02 05:22:40,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:22:40,012 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:40,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash -18078840, now seen corresponding path program 1 times [2023-04-02 05:22:40,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:40,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292309341] [2023-04-02 05:22:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:40,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:22:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:22:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:22:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:22:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:22:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:22:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:22:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:22:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:40,537 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 05:22:40,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292309341] [2023-04-02 05:22:40,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292309341] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:40,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:40,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:22:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688159751] [2023-04-02 05:22:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:40,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:22:40,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:22:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:22:40,539 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 05:22:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:45,264 INFO L93 Difference]: Finished difference Result 13340 states and 19405 transitions. [2023-04-02 05:22:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-02 05:22:45,265 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 05:22:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:45,302 INFO L225 Difference]: With dead ends: 13340 [2023-04-02 05:22:45,303 INFO L226 Difference]: Without dead ends: 7788 [2023-04-02 05:22:45,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 05:22:45,319 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1515 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:45,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 149 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:22:45,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7788 states. [2023-04-02 05:22:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7788 to 7784. [2023-04-02 05:22:47,151 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 05:22:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 11255 transitions. [2023-04-02 05:22:47,173 INFO L78 Accepts]: Start accepts. Automaton has 7784 states and 11255 transitions. Word has length 135 [2023-04-02 05:22:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:47,174 INFO L495 AbstractCegarLoop]: Abstraction has 7784 states and 11255 transitions. [2023-04-02 05:22:47,174 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 05:22:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7784 states and 11255 transitions. [2023-04-02 05:22:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:22:47,180 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:47,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:47,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:22:47,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:47,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:47,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1629346121, now seen corresponding path program 1 times [2023-04-02 05:22:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:47,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786534929] [2023-04-02 05:22:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:47,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:22:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:22:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:22:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:22:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:22:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:47,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:22:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:22:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:22:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:48,057 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 05:22:48,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:48,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786534929] [2023-04-02 05:22:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786534929] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:48,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:48,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-04-02 05:22:48,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267089958] [2023-04-02 05:22:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:22:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:48,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:22:48,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:22:48,062 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 05:22:52,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:52,525 INFO L93 Difference]: Finished difference Result 8344 states and 12569 transitions. [2023-04-02 05:22:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:22:52,525 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 05:22:52,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:52,568 INFO L225 Difference]: With dead ends: 8344 [2023-04-02 05:22:52,569 INFO L226 Difference]: Without dead ends: 8342 [2023-04-02 05:22:52,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 05:22:52,575 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 768 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:52,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 393 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:22:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2023-04-02 05:22:54,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 7856. [2023-04-02 05:22:54,163 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 05:22:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7856 states to 7856 states and 11320 transitions. [2023-04-02 05:22:54,188 INFO L78 Accepts]: Start accepts. Automaton has 7856 states and 11320 transitions. Word has length 135 [2023-04-02 05:22:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:54,189 INFO L495 AbstractCegarLoop]: Abstraction has 7856 states and 11320 transitions. [2023-04-02 05:22:54,190 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 05:22:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7856 states and 11320 transitions. [2023-04-02 05:22:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:22:54,195 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:54,195 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 05:22:54,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:22:54,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:54,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1319375930, now seen corresponding path program 1 times [2023-04-02 05:22:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:54,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261885192] [2023-04-02 05:22:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:54,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:22:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:22:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:22:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:22:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:22:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:22:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:22:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:22:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:22:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:22:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:54,835 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 05:22:54,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:54,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261885192] [2023-04-02 05:22:54,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261885192] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:54,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:54,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:22:54,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195080076] [2023-04-02 05:22:54,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:54,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:22:54,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:54,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:22:54,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:22:54,838 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 05:23:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:01,210 INFO L93 Difference]: Finished difference Result 16021 states and 23192 transitions. [2023-04-02 05:23:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:23:01,211 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 05:23:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:01,251 INFO L225 Difference]: With dead ends: 16021 [2023-04-02 05:23:01,252 INFO L226 Difference]: Without dead ends: 10349 [2023-04-02 05:23:01,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:23:01,270 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2810 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 05:23:01,271 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 05:23:01,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10349 states. [2023-04-02 05:23:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10349 to 9119. [2023-04-02 05:23:03,256 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 05:23:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9119 states to 9119 states and 13177 transitions. [2023-04-02 05:23:03,277 INFO L78 Accepts]: Start accepts. Automaton has 9119 states and 13177 transitions. Word has length 136 [2023-04-02 05:23:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:03,277 INFO L495 AbstractCegarLoop]: Abstraction has 9119 states and 13177 transitions. [2023-04-02 05:23:03,278 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 05:23:03,278 INFO L276 IsEmpty]: Start isEmpty. Operand 9119 states and 13177 transitions. [2023-04-02 05:23:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:23:03,283 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:03,283 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 05:23:03,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:23:03,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:03,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash 460874294, now seen corresponding path program 1 times [2023-04-02 05:23:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:03,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626976386] [2023-04-02 05:23:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:03,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:23:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:23:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:23:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:23:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:23:03,929 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 119 [2023-04-02 05:23:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:03,959 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 05:23:03,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:03,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626976386] [2023-04-02 05:23:03,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626976386] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:03,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:03,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:23:03,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633145437] [2023-04-02 05:23:03,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:03,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:23:03,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:03,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:23:03,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:23:03,961 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 05:23:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:10,977 INFO L93 Difference]: Finished difference Result 24214 states and 35047 transitions. [2023-04-02 05:23:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:23:10,977 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 05:23:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:11,034 INFO L225 Difference]: With dead ends: 24214 [2023-04-02 05:23:11,035 INFO L226 Difference]: Without dead ends: 15180 [2023-04-02 05:23:11,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:23:11,061 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:11,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2340 Valid, 90 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:23:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15180 states. [2023-04-02 05:23:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15180 to 9046. [2023-04-02 05:23:13,127 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 05:23:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9046 states to 9046 states and 13067 transitions. [2023-04-02 05:23:13,149 INFO L78 Accepts]: Start accepts. Automaton has 9046 states and 13067 transitions. Word has length 136 [2023-04-02 05:23:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:13,150 INFO L495 AbstractCegarLoop]: Abstraction has 9046 states and 13067 transitions. [2023-04-02 05:23:13,150 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 05:23:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 9046 states and 13067 transitions. [2023-04-02 05:23:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:23:13,154 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:13,154 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 05:23:13,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:23:13,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:13,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash 79712838, now seen corresponding path program 1 times [2023-04-02 05:23:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:13,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052437043] [2023-04-02 05:23:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:13,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:23:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:23:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:23:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:23:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:23:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:13,735 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 05:23:13,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:13,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052437043] [2023-04-02 05:23:13,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052437043] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:13,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:13,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:23:13,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117514864] [2023-04-02 05:23:13,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:13,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:23:13,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:13,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:23:13,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:23:13,736 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 05:23:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:20,951 INFO L93 Difference]: Finished difference Result 23102 states and 33369 transitions. [2023-04-02 05:23:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:23:20,952 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 05:23:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:20,993 INFO L225 Difference]: With dead ends: 23102 [2023-04-02 05:23:20,994 INFO L226 Difference]: Without dead ends: 14161 [2023-04-02 05:23:21,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:23:21,014 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2174 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:21,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 95 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:23:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14161 states. [2023-04-02 05:23:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14161 to 8992. [2023-04-02 05:23:23,059 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 05:23:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8992 states to 8992 states and 12987 transitions. [2023-04-02 05:23:23,083 INFO L78 Accepts]: Start accepts. Automaton has 8992 states and 12987 transitions. Word has length 136 [2023-04-02 05:23:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:23,083 INFO L495 AbstractCegarLoop]: Abstraction has 8992 states and 12987 transitions. [2023-04-02 05:23:23,084 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 05:23:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 8992 states and 12987 transitions. [2023-04-02 05:23:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:23:23,087 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:23,087 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 05:23:23,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:23:23,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:23,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1968766262, now seen corresponding path program 1 times [2023-04-02 05:23:23,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:23,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366957778] [2023-04-02 05:23:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:23,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:23:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:23:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:23:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:23:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:23,668 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 05:23:23,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366957778] [2023-04-02 05:23:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366957778] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:23,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:23:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702138383] [2023-04-02 05:23:23,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:23,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:23:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:23:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:23:23,670 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 05:23:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:30,616 INFO L93 Difference]: Finished difference Result 22039 states and 31775 transitions. [2023-04-02 05:23:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:23:30,617 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 05:23:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:30,666 INFO L225 Difference]: With dead ends: 22039 [2023-04-02 05:23:30,666 INFO L226 Difference]: Without dead ends: 13170 [2023-04-02 05:23:30,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:23:30,686 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 05:23:30,687 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 05:23:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13170 states. [2023-04-02 05:23:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13170 to 8959. [2023-04-02 05:23:32,808 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 05:23:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8959 states to 8959 states and 12937 transitions. [2023-04-02 05:23:32,827 INFO L78 Accepts]: Start accepts. Automaton has 8959 states and 12937 transitions. Word has length 136 [2023-04-02 05:23:32,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:32,827 INFO L495 AbstractCegarLoop]: Abstraction has 8959 states and 12937 transitions. [2023-04-02 05:23:32,827 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 05:23:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 8959 states and 12937 transitions. [2023-04-02 05:23:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:23:32,830 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:32,830 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 05:23:32,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:23:32,831 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:32,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1775077578, now seen corresponding path program 1 times [2023-04-02 05:23:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:32,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225300253] [2023-04-02 05:23:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:23:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:23:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:33,410 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 05:23:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225300253] [2023-04-02 05:23:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225300253] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:33,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:33,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:23:33,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331801770] [2023-04-02 05:23:33,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:33,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:23:33,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:33,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:23:33,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:23:33,411 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 05:23:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:40,181 INFO L93 Difference]: Finished difference Result 20082 states and 28864 transitions. [2023-04-02 05:23:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:23:40,181 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 05:23:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:40,215 INFO L225 Difference]: With dead ends: 20082 [2023-04-02 05:23:40,216 INFO L226 Difference]: Without dead ends: 11282 [2023-04-02 05:23:40,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:23:40,233 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2957 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:40,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2957 Valid, 90 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:23:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11282 states. [2023-04-02 05:23:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11282 to 8976. [2023-04-02 05:23:42,517 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 05:23:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8976 states to 8976 states and 12954 transitions. [2023-04-02 05:23:42,532 INFO L78 Accepts]: Start accepts. Automaton has 8976 states and 12954 transitions. Word has length 136 [2023-04-02 05:23:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:42,533 INFO L495 AbstractCegarLoop]: Abstraction has 8976 states and 12954 transitions. [2023-04-02 05:23:42,533 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 05:23:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 8976 states and 12954 transitions. [2023-04-02 05:23:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:23:42,535 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:42,535 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 05:23:42,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:23:42,535 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:42,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:42,536 INFO L85 PathProgramCache]: Analyzing trace with hash -738709562, now seen corresponding path program 1 times [2023-04-02 05:23:42,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:42,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660458974] [2023-04-02 05:23:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:42,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:23:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:43,093 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 05:23:43,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660458974] [2023-04-02 05:23:43,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660458974] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:43,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:43,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:23:43,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005344952] [2023-04-02 05:23:43,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:43,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:23:43,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:43,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:23:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:23:43,095 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 05:23:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:49,667 INFO L93 Difference]: Finished difference Result 19184 states and 27518 transitions. [2023-04-02 05:23:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:23:49,668 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 05:23:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:49,693 INFO L225 Difference]: With dead ends: 19184 [2023-04-02 05:23:49,694 INFO L226 Difference]: Without dead ends: 10405 [2023-04-02 05:23:49,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:23:49,707 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2294 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:49,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 95 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:23:49,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10405 states. [2023-04-02 05:23:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10405 to 9003. [2023-04-02 05:23:51,926 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 05:23:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 12986 transitions. [2023-04-02 05:23:51,945 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 12986 transitions. Word has length 136 [2023-04-02 05:23:51,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:51,945 INFO L495 AbstractCegarLoop]: Abstraction has 9003 states and 12986 transitions. [2023-04-02 05:23:51,946 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 05:23:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 12986 transitions. [2023-04-02 05:23:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:23:51,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:51,947 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 05:23:51,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:23:51,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:51,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -858703434, now seen corresponding path program 1 times [2023-04-02 05:23:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:51,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997020132] [2023-04-02 05:23:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:23:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,518 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 05:23:52,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:52,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997020132] [2023-04-02 05:23:52,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997020132] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:52,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:52,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:23:52,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211920403] [2023-04-02 05:23:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:52,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:23:52,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:23:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:23:52,563 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 05:23:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:58,950 INFO L93 Difference]: Finished difference Result 18342 states and 26270 transitions. [2023-04-02 05:23:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:23:58,950 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 05:23:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:58,979 INFO L225 Difference]: With dead ends: 18342 [2023-04-02 05:23:58,979 INFO L226 Difference]: Without dead ends: 9572 [2023-04-02 05:23:58,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:23:58,995 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2699 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:58,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2699 Valid, 90 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:23:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9572 states. [2023-04-02 05:24:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9572 to 9015. [2023-04-02 05:24:01,313 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 05:24:01,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 12998 transitions. [2023-04-02 05:24:01,328 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 12998 transitions. Word has length 136 [2023-04-02 05:24:01,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:01,328 INFO L495 AbstractCegarLoop]: Abstraction has 9015 states and 12998 transitions. [2023-04-02 05:24:01,328 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 05:24:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 12998 transitions. [2023-04-02 05:24:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:01,330 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:01,330 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 05:24:01,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:24:01,330 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:01,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash 293945798, now seen corresponding path program 1 times [2023-04-02 05:24:01,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:01,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675163854] [2023-04-02 05:24:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:01,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:24:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:01,952 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 05:24:01,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:01,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675163854] [2023-04-02 05:24:01,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675163854] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:01,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:01,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:01,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997395617] [2023-04-02 05:24:01,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:01,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:01,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:01,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:01,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:01,953 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 05:24:09,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:09,008 INFO L93 Difference]: Finished difference Result 21193 states and 30469 transitions. [2023-04-02 05:24:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:09,008 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 05:24:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:09,031 INFO L225 Difference]: With dead ends: 21193 [2023-04-02 05:24:09,032 INFO L226 Difference]: Without dead ends: 12335 [2023-04-02 05:24:09,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:09,040 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2893 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:09,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 90 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:24:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12335 states. [2023-04-02 05:24:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12335 to 9371. [2023-04-02 05:24:11,388 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 05:24:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9371 states to 9371 states and 13519 transitions. [2023-04-02 05:24:11,409 INFO L78 Accepts]: Start accepts. Automaton has 9371 states and 13519 transitions. Word has length 136 [2023-04-02 05:24:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:11,410 INFO L495 AbstractCegarLoop]: Abstraction has 9371 states and 13519 transitions. [2023-04-02 05:24:11,410 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 05:24:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9371 states and 13519 transitions. [2023-04-02 05:24:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-02 05:24:11,411 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:11,411 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 05:24:11,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:24:11,412 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:11,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1658387286, now seen corresponding path program 1 times [2023-04-02 05:24:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:11,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992237905] [2023-04-02 05:24:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:11,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:24:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:24:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:24:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:24:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:24:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:24:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:24:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 05:24:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:12,027 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 05:24:12,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:12,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992237905] [2023-04-02 05:24:12,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992237905] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:12,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:12,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:24:12,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060642470] [2023-04-02 05:24:12,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:12,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:24:12,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:12,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:24:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:24:12,029 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 05:24:19,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:19,232 INFO L93 Difference]: Finished difference Result 19923 states and 28918 transitions. [2023-04-02 05:24:19,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 05:24:19,233 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 05:24:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:19,268 INFO L225 Difference]: With dead ends: 19923 [2023-04-02 05:24:19,268 INFO L226 Difference]: Without dead ends: 13086 [2023-04-02 05:24:19,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=601, Invalid=2155, Unknown=0, NotChecked=0, Total=2756 [2023-04-02 05:24:19,278 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2651 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:19,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2670 Valid, 151 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:24:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13086 states. [2023-04-02 05:24:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13086 to 11792. [2023-04-02 05:24:22,210 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 05:24:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11792 states to 11792 states and 16984 transitions. [2023-04-02 05:24:22,234 INFO L78 Accepts]: Start accepts. Automaton has 11792 states and 16984 transitions. Word has length 137 [2023-04-02 05:24:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 11792 states and 16984 transitions. [2023-04-02 05:24:22,234 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 05:24:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 11792 states and 16984 transitions. [2023-04-02 05:24:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-02 05:24:22,241 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:22,241 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 05:24:22,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:24:22,241 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:22,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2006852655, now seen corresponding path program 1 times [2023-04-02 05:24:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:22,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309288951] [2023-04-02 05:24:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:24:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:24:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:24:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:24:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:24:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 05:24:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:24:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 05:24:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 05:24:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 05:24:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 05:24:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 05:24:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 05:24:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,461 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 05:24:23,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309288951] [2023-04-02 05:24:23,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309288951] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:24:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510285] [2023-04-02 05:24:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:23,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:24:23,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:24:23,466 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 05:24:23,468 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 05:24:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:24:23,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:24:26,621 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 05:24:26,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:24:26,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:26,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:24:26,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [25] total 47 [2023-04-02 05:24:26,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612140415] [2023-04-02 05:24:26,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:26,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 05:24:26,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 05:24:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:24:26,623 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 05:24:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:33,095 INFO L93 Difference]: Finished difference Result 20235 states and 29244 transitions. [2023-04-02 05:24:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:24:33,097 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 05:24:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:33,138 INFO L225 Difference]: With dead ends: 20235 [2023-04-02 05:24:33,138 INFO L226 Difference]: Without dead ends: 19126 [2023-04-02 05:24:33,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=241, Invalid=2111, Unknown=0, NotChecked=0, Total=2352 [2023-04-02 05:24:33,145 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 2781 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 4943 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:33,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2787 Valid, 1697 Invalid, 5136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 4943 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 05:24:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2023-04-02 05:24:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19110. [2023-04-02 05:24:37,571 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 05:24:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19110 states to 19110 states and 27634 transitions. [2023-04-02 05:24:37,610 INFO L78 Accepts]: Start accepts. Automaton has 19110 states and 27634 transitions. Word has length 194 [2023-04-02 05:24:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:37,610 INFO L495 AbstractCegarLoop]: Abstraction has 19110 states and 27634 transitions. [2023-04-02 05:24:37,610 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 05:24:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19110 states and 27634 transitions. [2023-04-02 05:24:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-02 05:24:37,617 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:37,618 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 05:24:37,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 05:24:37,827 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 05:24:37,827 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:37,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash -226602431, now seen corresponding path program 1 times [2023-04-02 05:24:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830348012] [2023-04-02 05:24:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:37,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:24:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:24:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:24:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:24:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 05:24:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 05:24:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:24:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 05:24:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 05:24:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 05:24:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 05:24:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 05:24:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 05:24:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:38,994 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 05:24:38,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:38,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830348012] [2023-04-02 05:24:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830348012] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:24:38,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196356392] [2023-04-02 05:24:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:38,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:24:38,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:24:38,996 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 05:24:38,998 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 05:24:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:39,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:24:39,251 INFO L285 TraceCheckSpWp]: Computing forward predicates...