/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:26:51,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:26:51,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:26:51,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:26:51,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:26:51,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:26:51,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:26:51,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:26:51,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:26:51,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:26:51,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:26:51,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:26:51,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:26:51,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:26:51,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:26:51,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:26:51,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:26:51,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:26:51,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:26:51,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:26:51,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:26:51,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:26:51,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:26:51,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:26:51,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:26:51,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:26:51,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:26:51,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:26:51,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:26:51,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:26:51,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:26:51,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:26:51,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:26:51,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:26:51,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:26:51,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:26:51,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:26:51,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:26:51,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:26:51,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:26:51,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:26:51,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:26:51,846 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:26:51,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:26:51,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:26:51,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:26:51,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:26:51,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:26:51,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:26:51,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:26:51,852 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:26:51,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:26:51,853 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:26:51,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:26:51,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:26:51,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:26:51,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:26:51,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:26:51,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:26:51,854 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:26:51,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:26:51,854 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:26:51,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:26:51,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:26:51,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:26:51,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:26:51,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:26:51,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:26:51,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:26:51,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:26:51,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:26:51,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:26:51,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:26:51,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:26:51,856 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:26:51,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:26:51,856 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:26:51,856 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:26:52,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:26:52,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:26:52,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:26:52,141 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:26:52,141 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:26:52,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:26:53,382 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:26:53,712 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:26:53,713 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:26:53,734 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93755dfc8/847a6823ad21418291bd911020cedd9c/FLAGe6754428d [2023-04-02 06:26:53,746 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93755dfc8/847a6823ad21418291bd911020cedd9c [2023-04-02 06:26:53,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:26:53,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:26:53,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:26:53,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:26:53,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:26:53,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:26:53" (1/1) ... [2023-04-02 06:26:53,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d054c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:53, skipping insertion in model container [2023-04-02 06:26:53,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:26:53" (1/1) ... [2023-04-02 06:26:53,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:26:53,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:26:54,025 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9421,9434] [2023-04-02 06:26:54,043 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12913,12926] [2023-04-02 06:26:54,050 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14069,14082] [2023-04-02 06:26:54,055 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14725,14738] [2023-04-02 06:26:54,062 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16246,16259] [2023-04-02 06:26:54,066 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16902,16915] [2023-04-02 06:26:54,072 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17886,17899] [2023-04-02 06:26:54,083 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20224,20237] [2023-04-02 06:26:54,087 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20883,20896] [2023-04-02 06:26:54,092 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21907,21920] [2023-04-02 06:26:54,099 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23782,23795] [2023-04-02 06:26:54,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:26:54,211 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:26:54,256 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9421,9434] [2023-04-02 06:26:54,271 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12913,12926] [2023-04-02 06:26:54,277 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14069,14082] [2023-04-02 06:26:54,282 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14725,14738] [2023-04-02 06:26:54,290 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16246,16259] [2023-04-02 06:26:54,303 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16902,16915] [2023-04-02 06:26:54,309 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17886,17899] [2023-04-02 06:26:54,353 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20224,20237] [2023-04-02 06:26:54,362 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20883,20896] [2023-04-02 06:26:54,369 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21907,21920] [2023-04-02 06:26:54,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23782,23795] [2023-04-02 06:26:54,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:26:54,493 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:26:54,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54 WrapperNode [2023-04-02 06:26:54,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:26:54,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:26:54,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:26:54,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:26:54,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:26:54,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:26:54,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:26:54,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:26:54,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (1/1) ... [2023-04-02 06:26:54,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:26:54,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:26:54,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:26:54,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:26:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:26:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:26:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:26:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:26:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:26:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:26:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:26:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:26:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:26:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:26:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:26:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:26:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:26:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:26:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:26:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:26:54,915 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:26:54,917 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:26:56,007 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:26:56,023 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:26:56,024 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:26:56,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:26:56 BoogieIcfgContainer [2023-04-02 06:26:56,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:26:56,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:26:56,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:26:56,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:26:56,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:26:53" (1/3) ... [2023-04-02 06:26:56,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f75b9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:26:56, skipping insertion in model container [2023-04-02 06:26:56,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:26:54" (2/3) ... [2023-04-02 06:26:56,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f75b9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:26:56, skipping insertion in model container [2023-04-02 06:26:56,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:26:56" (3/3) ... [2023-04-02 06:26:56,036 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:26:56,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:26:56,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-04-02 06:26:56,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:26:56,119 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;@2f7aa533, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:26:56,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-04-02 06:26:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 364 states, 347 states have (on average 1.8357348703170029) internal successors, (637), 359 states have internal predecessors, (637), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:26:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 06:26:56,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:26:56,142 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] [2023-04-02 06:26:56,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:26:56,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:26:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1531487862, now seen corresponding path program 1 times [2023-04-02 06:26:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:26:56,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671377018] [2023-04-02 06:26:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:26:56,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:26:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:26:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:26:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:26:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:26:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:26:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671377018] [2023-04-02 06:26:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671377018] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:26:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:26:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:26:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935432232] [2023-04-02 06:26:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:26:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:26:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:26:57,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:26:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:26:57,099 INFO L87 Difference]: Start difference. First operand has 364 states, 347 states have (on average 1.8357348703170029) internal successors, (637), 359 states have internal predecessors, (637), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:26:58,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:26:58,939 INFO L93 Difference]: Finished difference Result 580 states and 982 transitions. [2023-04-02 06:26:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:26:58,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2023-04-02 06:26:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:26:58,951 INFO L225 Difference]: With dead ends: 580 [2023-04-02 06:26:58,951 INFO L226 Difference]: Without dead ends: 300 [2023-04-02 06:26:58,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:26:58,958 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1458 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:26:58,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 388 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:26:58,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-04-02 06:26:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-04-02 06:26:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 286 states have (on average 1.2867132867132867) internal successors, (368), 296 states have internal predecessors, (368), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:26:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 371 transitions. [2023-04-02 06:26:59,018 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 371 transitions. Word has length 63 [2023-04-02 06:26:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:26:59,018 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 371 transitions. [2023-04-02 06:26:59,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:26:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 371 transitions. [2023-04-02 06:26:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-02 06:26:59,021 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:26:59,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:26:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:26:59,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:26:59,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:26:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash 35278412, now seen corresponding path program 1 times [2023-04-02 06:26:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:26:59,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45877114] [2023-04-02 06:26:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:26:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:26:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:26:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:26:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:26:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:26:59,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:26:59,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45877114] [2023-04-02 06:26:59,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45877114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:26:59,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:26:59,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:26:59,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336890860] [2023-04-02 06:26:59,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:26:59,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:26:59,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:26:59,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:26:59,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:26:59,484 INFO L87 Difference]: Start difference. First operand 300 states and 371 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:00,561 INFO L93 Difference]: Finished difference Result 502 states and 637 transitions. [2023-04-02 06:27:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:27:00,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-04-02 06:27:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:00,564 INFO L225 Difference]: With dead ends: 502 [2023-04-02 06:27:00,564 INFO L226 Difference]: Without dead ends: 274 [2023-04-02 06:27:00,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:27:00,566 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 948 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:00,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 216 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:27:00,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-04-02 06:27:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-04-02 06:27:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 260 states have (on average 1.2961538461538462) internal successors, (337), 270 states have internal predecessors, (337), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 340 transitions. [2023-04-02 06:27:00,588 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 340 transitions. Word has length 64 [2023-04-02 06:27:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:00,588 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 340 transitions. [2023-04-02 06:27:00,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 340 transitions. [2023-04-02 06:27:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-02 06:27:00,590 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:00,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:27:00,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:27:00,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:00,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:00,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1105020168, now seen corresponding path program 1 times [2023-04-02 06:27:00,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:00,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078846726] [2023-04-02 06:27:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:00,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:00,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:01,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078846726] [2023-04-02 06:27:01,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078846726] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:01,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:01,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:27:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128755975] [2023-04-02 06:27:01,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:01,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:27:01,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:27:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:27:01,034 INFO L87 Difference]: Start difference. First operand 274 states and 340 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:02,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:02,033 INFO L93 Difference]: Finished difference Result 476 states and 605 transitions. [2023-04-02 06:27:02,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:27:02,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-04-02 06:27:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:02,035 INFO L225 Difference]: With dead ends: 476 [2023-04-02 06:27:02,035 INFO L226 Difference]: Without dead ends: 264 [2023-04-02 06:27:02,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:27:02,037 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 894 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:02,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 202 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:27:02,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-04-02 06:27:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-04-02 06:27:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 250 states have (on average 1.296) internal successors, (324), 260 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 327 transitions. [2023-04-02 06:27:02,066 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 327 transitions. Word has length 65 [2023-04-02 06:27:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:02,067 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 327 transitions. [2023-04-02 06:27:02,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 327 transitions. [2023-04-02 06:27:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 06:27:02,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:02,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:27:02,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:27:02,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:02,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1795655446, now seen corresponding path program 1 times [2023-04-02 06:27:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:02,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72180624] [2023-04-02 06:27:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:02,537 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 06:27:02,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:02,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72180624] [2023-04-02 06:27:02,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72180624] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:02,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:02,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:27:02,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816985031] [2023-04-02 06:27:02,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:02,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:27:02,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:27:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:27:02,539 INFO L87 Difference]: Start difference. First operand 264 states and 327 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:03,554 INFO L93 Difference]: Finished difference Result 599 states and 764 transitions. [2023-04-02 06:27:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:27:03,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-04-02 06:27:03,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:03,557 INFO L225 Difference]: With dead ends: 599 [2023-04-02 06:27:03,557 INFO L226 Difference]: Without dead ends: 383 [2023-04-02 06:27:03,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:27:03,559 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1229 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:03,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 294 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:27:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-04-02 06:27:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 341. [2023-04-02 06:27:03,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.3547400611620795) internal successors, (443), 337 states have internal predecessors, (443), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 446 transitions. [2023-04-02 06:27:03,603 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 446 transitions. Word has length 66 [2023-04-02 06:27:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:03,604 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 446 transitions. [2023-04-02 06:27:03,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 446 transitions. [2023-04-02 06:27:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 06:27:03,605 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:03,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:27:03,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:27:03,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:03,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1094127258, now seen corresponding path program 1 times [2023-04-02 06:27:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:03,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066495425] [2023-04-02 06:27:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:03,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:04,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:04,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066495425] [2023-04-02 06:27:04,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066495425] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:04,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:04,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:27:04,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958004074] [2023-04-02 06:27:04,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:04,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:27:04,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:04,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:27:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:27:04,378 INFO L87 Difference]: Start difference. First operand 341 states and 446 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:05,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:05,955 INFO L93 Difference]: Finished difference Result 739 states and 997 transitions. [2023-04-02 06:27:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:27:05,955 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-02 06:27:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:05,959 INFO L225 Difference]: With dead ends: 739 [2023-04-02 06:27:05,959 INFO L226 Difference]: Without dead ends: 734 [2023-04-02 06:27:05,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:27:05,960 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1533 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:05,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1058 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:27:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-04-02 06:27:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 341. [2023-04-02 06:27:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.348623853211009) internal successors, (441), 337 states have internal predecessors, (441), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 444 transitions. [2023-04-02 06:27:05,992 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 444 transitions. Word has length 67 [2023-04-02 06:27:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:05,993 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 444 transitions. [2023-04-02 06:27:05,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 444 transitions. [2023-04-02 06:27:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 06:27:05,994 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:05,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:27:05,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:27:05,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:05,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:05,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1479175419, now seen corresponding path program 1 times [2023-04-02 06:27:05,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:05,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644196127] [2023-04-02 06:27:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:05,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:06,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:06,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644196127] [2023-04-02 06:27:06,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644196127] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:06,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:06,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:27:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582458855] [2023-04-02 06:27:06,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:06,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:27:06,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:06,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:27:06,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:27:06,590 INFO L87 Difference]: Start difference. First operand 341 states and 444 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:07,778 INFO L93 Difference]: Finished difference Result 687 states and 896 transitions. [2023-04-02 06:27:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:27:07,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-02 06:27:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:07,782 INFO L225 Difference]: With dead ends: 687 [2023-04-02 06:27:07,782 INFO L226 Difference]: Without dead ends: 504 [2023-04-02 06:27:07,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:27:07,783 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1879 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:07,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 455 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:27:07,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-04-02 06:27:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 341. [2023-04-02 06:27:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.345565749235474) internal successors, (440), 337 states have internal predecessors, (440), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 443 transitions. [2023-04-02 06:27:07,817 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 443 transitions. Word has length 67 [2023-04-02 06:27:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:07,818 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 443 transitions. [2023-04-02 06:27:07,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:07,818 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 443 transitions. [2023-04-02 06:27:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 06:27:07,819 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:07,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:27:07,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:27:07,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:07,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1103407128, now seen corresponding path program 1 times [2023-04-02 06:27:07,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:07,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474218690] [2023-04-02 06:27:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:07,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:08,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:08,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474218690] [2023-04-02 06:27:08,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474218690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:08,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:08,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:27:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385377719] [2023-04-02 06:27:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:08,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:27:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:08,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:27:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:27:08,360 INFO L87 Difference]: Start difference. First operand 341 states and 443 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:09,863 INFO L93 Difference]: Finished difference Result 747 states and 1002 transitions. [2023-04-02 06:27:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:27:09,863 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-02 06:27:09,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:09,866 INFO L225 Difference]: With dead ends: 747 [2023-04-02 06:27:09,866 INFO L226 Difference]: Without dead ends: 742 [2023-04-02 06:27:09,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:27:09,868 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1000 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:09,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 886 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:27:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-04-02 06:27:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 341. [2023-04-02 06:27:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.342507645259939) internal successors, (439), 337 states have internal predecessors, (439), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 442 transitions. [2023-04-02 06:27:09,906 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 442 transitions. Word has length 67 [2023-04-02 06:27:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:09,907 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 442 transitions. [2023-04-02 06:27:09,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 442 transitions. [2023-04-02 06:27:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 06:27:09,908 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:09,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:27:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:27:09,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:09,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash 659451008, now seen corresponding path program 1 times [2023-04-02 06:27:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:09,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512674926] [2023-04-02 06:27:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:10,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:10,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:10,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512674926] [2023-04-02 06:27:10,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512674926] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:10,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:27:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453837069] [2023-04-02 06:27:10,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:10,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:10,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:10,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:10,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:10,525 INFO L87 Difference]: Start difference. First operand 341 states and 442 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:12,199 INFO L93 Difference]: Finished difference Result 881 states and 1187 transitions. [2023-04-02 06:27:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 06:27:12,199 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-02 06:27:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:12,202 INFO L225 Difference]: With dead ends: 881 [2023-04-02 06:27:12,202 INFO L226 Difference]: Without dead ends: 772 [2023-04-02 06:27:12,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=605, Unknown=0, NotChecked=0, Total=812 [2023-04-02 06:27:12,204 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1750 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:12,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 1117 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:27:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-04-02 06:27:12,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 348. [2023-04-02 06:27:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 334 states have (on average 1.344311377245509) internal successors, (449), 344 states have internal predecessors, (449), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 452 transitions. [2023-04-02 06:27:12,251 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 452 transitions. Word has length 67 [2023-04-02 06:27:12,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:12,252 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 452 transitions. [2023-04-02 06:27:12,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:12,252 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 452 transitions. [2023-04-02 06:27:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 06:27:12,252 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:12,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:27:12,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:27:12,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:12,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1706359776, now seen corresponding path program 1 times [2023-04-02 06:27:12,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:12,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050413948] [2023-04-02 06:27:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:12,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:12,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:12,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050413948] [2023-04-02 06:27:12,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050413948] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:12,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:12,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:27:12,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474938606] [2023-04-02 06:27:12,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:12,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:27:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:12,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:27:12,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:27:12,792 INFO L87 Difference]: Start difference. First operand 348 states and 452 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:14,150 INFO L93 Difference]: Finished difference Result 643 states and 870 transitions. [2023-04-02 06:27:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:27:14,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-02 06:27:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:14,152 INFO L225 Difference]: With dead ends: 643 [2023-04-02 06:27:14,152 INFO L226 Difference]: Without dead ends: 505 [2023-04-02 06:27:14,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:27:14,153 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1595 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:14,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 774 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:27:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-04-02 06:27:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 341. [2023-04-02 06:27:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.3394495412844036) internal successors, (438), 337 states have internal predecessors, (438), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 441 transitions. [2023-04-02 06:27:14,199 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 441 transitions. Word has length 67 [2023-04-02 06:27:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:14,201 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 441 transitions. [2023-04-02 06:27:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 441 transitions. [2023-04-02 06:27:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:27:14,202 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:14,202 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] [2023-04-02 06:27:14,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:27:14,202 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:14,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:14,203 INFO L85 PathProgramCache]: Analyzing trace with hash -126462660, now seen corresponding path program 1 times [2023-04-02 06:27:14,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:14,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798221881] [2023-04-02 06:27:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:14,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:14,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:14,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798221881] [2023-04-02 06:27:14,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798221881] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:14,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:14,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:27:14,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416873005] [2023-04-02 06:27:14,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:14,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:27:14,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:14,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:27:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:27:14,800 INFO L87 Difference]: Start difference. First operand 341 states and 441 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:16,215 INFO L93 Difference]: Finished difference Result 878 states and 1196 transitions. [2023-04-02 06:27:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:27:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:27:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:16,220 INFO L225 Difference]: With dead ends: 878 [2023-04-02 06:27:16,220 INFO L226 Difference]: Without dead ends: 762 [2023-04-02 06:27:16,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:27:16,222 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1862 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:16,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 946 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:27:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-04-02 06:27:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 341. [2023-04-02 06:27:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.3363914373088686) internal successors, (437), 337 states have internal predecessors, (437), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 440 transitions. [2023-04-02 06:27:16,276 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 440 transitions. Word has length 69 [2023-04-02 06:27:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:16,277 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 440 transitions. [2023-04-02 06:27:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 440 transitions. [2023-04-02 06:27:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:27:16,278 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:16,278 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] [2023-04-02 06:27:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:27:16,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:16,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 678919910, now seen corresponding path program 1 times [2023-04-02 06:27:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:16,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749548513] [2023-04-02 06:27:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:16,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:16,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:16,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:16,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749548513] [2023-04-02 06:27:16,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749548513] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:16,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:16,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:27:16,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122908608] [2023-04-02 06:27:16,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:16,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:27:16,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:16,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:27:16,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:27:16,793 INFO L87 Difference]: Start difference. First operand 341 states and 440 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:18,223 INFO L93 Difference]: Finished difference Result 848 states and 1148 transitions. [2023-04-02 06:27:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:27:18,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:27:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:18,226 INFO L225 Difference]: With dead ends: 848 [2023-04-02 06:27:18,226 INFO L226 Difference]: Without dead ends: 742 [2023-04-02 06:27:18,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:27:18,227 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 974 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:18,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 904 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:27:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-04-02 06:27:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 341. [2023-04-02 06:27:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.3333333333333333) internal successors, (436), 337 states have internal predecessors, (436), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 439 transitions. [2023-04-02 06:27:18,281 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 439 transitions. Word has length 69 [2023-04-02 06:27:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:18,282 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 439 transitions. [2023-04-02 06:27:18,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 439 transitions. [2023-04-02 06:27:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:27:18,282 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:18,283 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] [2023-04-02 06:27:18,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:27:18,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:18,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:18,283 INFO L85 PathProgramCache]: Analyzing trace with hash 567184146, now seen corresponding path program 1 times [2023-04-02 06:27:18,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:18,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877619109] [2023-04-02 06:27:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:18,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:18,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:18,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877619109] [2023-04-02 06:27:18,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877619109] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:18,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:18,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:27:18,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859929085] [2023-04-02 06:27:18,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:18,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:27:18,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:18,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:27:18,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:27:18,811 INFO L87 Difference]: Start difference. First operand 341 states and 439 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:20,235 INFO L93 Difference]: Finished difference Result 851 states and 1150 transitions. [2023-04-02 06:27:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:27:20,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:27:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:20,238 INFO L225 Difference]: With dead ends: 851 [2023-04-02 06:27:20,238 INFO L226 Difference]: Without dead ends: 742 [2023-04-02 06:27:20,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:27:20,239 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1812 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:20,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 937 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:27:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-04-02 06:27:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 341. [2023-04-02 06:27:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.3302752293577982) internal successors, (435), 337 states have internal predecessors, (435), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 438 transitions. [2023-04-02 06:27:20,299 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 438 transitions. Word has length 69 [2023-04-02 06:27:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:20,299 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 438 transitions. [2023-04-02 06:27:20,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 438 transitions. [2023-04-02 06:27:20,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:27:20,300 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:20,300 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] [2023-04-02 06:27:20,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:27:20,300 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:20,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1798626638, now seen corresponding path program 1 times [2023-04-02 06:27:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626205443] [2023-04-02 06:27:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:20,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:20,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:20,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626205443] [2023-04-02 06:27:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626205443] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:20,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:20,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:27:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429305084] [2023-04-02 06:27:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:20,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:20,977 INFO L87 Difference]: Start difference. First operand 341 states and 438 transitions. Second operand has 13 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:23,825 INFO L93 Difference]: Finished difference Result 1612 states and 2249 transitions. [2023-04-02 06:27:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 06:27:23,825 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:27:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:23,829 INFO L225 Difference]: With dead ends: 1612 [2023-04-02 06:27:23,829 INFO L226 Difference]: Without dead ends: 1491 [2023-04-02 06:27:23,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:27:23,831 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 3203 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:23,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3203 Valid, 1572 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:27:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2023-04-02 06:27:23,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 345. [2023-04-02 06:27:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 331 states have (on average 1.3262839879154078) internal successors, (439), 341 states have internal predecessors, (439), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 442 transitions. [2023-04-02 06:27:23,911 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 442 transitions. Word has length 69 [2023-04-02 06:27:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:23,911 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 442 transitions. [2023-04-02 06:27:23,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 442 transitions. [2023-04-02 06:27:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:27:23,912 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:23,912 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] [2023-04-02 06:27:23,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:27:23,912 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:23,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash 10920860, now seen corresponding path program 1 times [2023-04-02 06:27:23,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:23,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337785459] [2023-04-02 06:27:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:23,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:24,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:24,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337785459] [2023-04-02 06:27:24,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337785459] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:24,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:24,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:27:24,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667480497] [2023-04-02 06:27:24,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:24,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:27:24,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:24,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:27:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:27:24,425 INFO L87 Difference]: Start difference. First operand 345 states and 442 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:25,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:25,853 INFO L93 Difference]: Finished difference Result 779 states and 1044 transitions. [2023-04-02 06:27:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:27:25,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:27:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:25,855 INFO L225 Difference]: With dead ends: 779 [2023-04-02 06:27:25,855 INFO L226 Difference]: Without dead ends: 762 [2023-04-02 06:27:25,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:27:25,856 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1256 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:25,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 1128 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:27:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-04-02 06:27:25,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 345. [2023-04-02 06:27:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 331 states have (on average 1.3202416918429003) internal successors, (437), 341 states have internal predecessors, (437), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 440 transitions. [2023-04-02 06:27:25,942 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 440 transitions. Word has length 69 [2023-04-02 06:27:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:25,942 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 440 transitions. [2023-04-02 06:27:25,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 440 transitions. [2023-04-02 06:27:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:27:25,943 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:25,943 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] [2023-04-02 06:27:25,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:27:25,944 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:25,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash -848871226, now seen corresponding path program 1 times [2023-04-02 06:27:25,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:25,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682235996] [2023-04-02 06:27:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:25,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:26,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:26,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:26,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682235996] [2023-04-02 06:27:26,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682235996] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:26,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:26,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:27:26,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766996019] [2023-04-02 06:27:26,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:26,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:27:26,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:26,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:27:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:27:26,561 INFO L87 Difference]: Start difference. First operand 345 states and 440 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:28,493 INFO L93 Difference]: Finished difference Result 812 states and 1103 transitions. [2023-04-02 06:27:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 06:27:28,493 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:27:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:28,495 INFO L225 Difference]: With dead ends: 812 [2023-04-02 06:27:28,495 INFO L226 Difference]: Without dead ends: 644 [2023-04-02 06:27:28,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:27:28,496 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1391 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:28,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1253 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:27:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-04-02 06:27:28,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 345. [2023-04-02 06:27:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 331 states have (on average 1.3141993957703928) internal successors, (435), 341 states have internal predecessors, (435), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 438 transitions. [2023-04-02 06:27:28,583 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 438 transitions. Word has length 69 [2023-04-02 06:27:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:28,583 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 438 transitions. [2023-04-02 06:27:28,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 438 transitions. [2023-04-02 06:27:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:27:28,585 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:28,585 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] [2023-04-02 06:27:28,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:27:28,585 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:28,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:28,585 INFO L85 PathProgramCache]: Analyzing trace with hash -28061119, now seen corresponding path program 1 times [2023-04-02 06:27:28,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:28,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814267144] [2023-04-02 06:27:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:28,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:29,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814267144] [2023-04-02 06:27:29,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814267144] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:29,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:27:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349602163] [2023-04-02 06:27:29,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:29,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:27:29,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:29,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:27:29,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:27:29,055 INFO L87 Difference]: Start difference. First operand 345 states and 438 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:30,777 INFO L93 Difference]: Finished difference Result 883 states and 1193 transitions. [2023-04-02 06:27:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:27:30,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-02 06:27:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:30,780 INFO L225 Difference]: With dead ends: 883 [2023-04-02 06:27:30,780 INFO L226 Difference]: Without dead ends: 762 [2023-04-02 06:27:30,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:27:30,781 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 1326 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:30,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 1192 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:27:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-04-02 06:27:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 341. [2023-04-02 06:27:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 327 states have (on average 1.3149847094801224) internal successors, (430), 337 states have internal predecessors, (430), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 433 transitions. [2023-04-02 06:27:30,868 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 433 transitions. Word has length 70 [2023-04-02 06:27:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:30,868 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 433 transitions. [2023-04-02 06:27:30,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:30,868 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 433 transitions. [2023-04-02 06:27:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:27:30,869 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:30,869 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] [2023-04-02 06:27:30,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:27:30,869 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:30,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:30,869 INFO L85 PathProgramCache]: Analyzing trace with hash 191864440, now seen corresponding path program 1 times [2023-04-02 06:27:30,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:30,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255805391] [2023-04-02 06:27:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:30,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:31,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:31,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:31,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255805391] [2023-04-02 06:27:31,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255805391] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:31,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:31,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:27:31,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815991787] [2023-04-02 06:27:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:31,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:31,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:31,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:31,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:31,643 INFO L87 Difference]: Start difference. First operand 341 states and 433 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:33,485 INFO L93 Difference]: Finished difference Result 794 states and 1082 transitions. [2023-04-02 06:27:33,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:27:33,486 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:27:33,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:33,488 INFO L225 Difference]: With dead ends: 794 [2023-04-02 06:27:33,488 INFO L226 Difference]: Without dead ends: 666 [2023-04-02 06:27:33,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:27:33,489 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1527 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:33,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1857 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:27:33,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-04-02 06:27:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 317. [2023-04-02 06:27:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 304 states have (on average 1.3157894736842106) internal successors, (400), 313 states have internal predecessors, (400), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 403 transitions. [2023-04-02 06:27:33,582 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 403 transitions. Word has length 71 [2023-04-02 06:27:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:33,582 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 403 transitions. [2023-04-02 06:27:33,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:33,582 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 403 transitions. [2023-04-02 06:27:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:27:33,583 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:33,583 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] [2023-04-02 06:27:33,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:27:33,583 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:33,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1372435754, now seen corresponding path program 1 times [2023-04-02 06:27:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:33,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624861803] [2023-04-02 06:27:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:33,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:34,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:34,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624861803] [2023-04-02 06:27:34,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624861803] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:34,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:34,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:27:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321010625] [2023-04-02 06:27:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:34,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:34,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:34,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:34,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:34,280 INFO L87 Difference]: Start difference. First operand 317 states and 403 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:36,748 INFO L93 Difference]: Finished difference Result 1067 states and 1466 transitions. [2023-04-02 06:27:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:27:36,749 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:27:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:36,751 INFO L225 Difference]: With dead ends: 1067 [2023-04-02 06:27:36,751 INFO L226 Difference]: Without dead ends: 952 [2023-04-02 06:27:36,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:27:36,752 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1340 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:36,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3074 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:27:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-04-02 06:27:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 306. [2023-04-02 06:27:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 294 states have (on average 1.3129251700680271) internal successors, (386), 302 states have internal predecessors, (386), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 389 transitions. [2023-04-02 06:27:36,857 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 389 transitions. Word has length 71 [2023-04-02 06:27:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:36,857 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 389 transitions. [2023-04-02 06:27:36,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 389 transitions. [2023-04-02 06:27:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:27:36,858 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:36,858 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] [2023-04-02 06:27:36,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:27:36,859 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:36,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1355778605, now seen corresponding path program 1 times [2023-04-02 06:27:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:36,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676588379] [2023-04-02 06:27:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:36,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:37,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:37,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676588379] [2023-04-02 06:27:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676588379] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:37,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:37,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:27:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048852157] [2023-04-02 06:27:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:37,595 INFO L87 Difference]: Start difference. First operand 306 states and 389 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:39,218 INFO L93 Difference]: Finished difference Result 594 states and 779 transitions. [2023-04-02 06:27:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:27:39,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:27:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:39,220 INFO L225 Difference]: With dead ends: 594 [2023-04-02 06:27:39,220 INFO L226 Difference]: Without dead ends: 486 [2023-04-02 06:27:39,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:27:39,221 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1410 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:39,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 1285 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:27:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-04-02 06:27:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 302. [2023-04-02 06:27:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.309278350515464) internal successors, (381), 298 states have internal predecessors, (381), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 384 transitions. [2023-04-02 06:27:39,344 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 384 transitions. Word has length 71 [2023-04-02 06:27:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:39,344 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 384 transitions. [2023-04-02 06:27:39,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 384 transitions. [2023-04-02 06:27:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:27:39,345 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:39,345 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] [2023-04-02 06:27:39,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:27:39,345 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:39,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:39,346 INFO L85 PathProgramCache]: Analyzing trace with hash 904774625, now seen corresponding path program 1 times [2023-04-02 06:27:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:39,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340247057] [2023-04-02 06:27:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:40,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340247057] [2023-04-02 06:27:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340247057] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:40,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:40,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:27:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987172415] [2023-04-02 06:27:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:40,070 INFO L87 Difference]: Start difference. First operand 302 states and 384 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:42,499 INFO L93 Difference]: Finished difference Result 1054 states and 1447 transitions. [2023-04-02 06:27:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:27:42,500 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:27:42,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:42,503 INFO L225 Difference]: With dead ends: 1054 [2023-04-02 06:27:42,503 INFO L226 Difference]: Without dead ends: 928 [2023-04-02 06:27:42,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:27:42,504 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1577 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:42,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 2987 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:27:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2023-04-02 06:27:42,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 280. [2023-04-02 06:27:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 271 states have (on average 1.2952029520295203) internal successors, (351), 276 states have internal predecessors, (351), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 354 transitions. [2023-04-02 06:27:42,617 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 354 transitions. Word has length 71 [2023-04-02 06:27:42,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:42,617 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 354 transitions. [2023-04-02 06:27:42,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:42,617 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 354 transitions. [2023-04-02 06:27:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:27:42,618 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:42,618 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] [2023-04-02 06:27:42,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:27:42,618 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:42,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:42,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1570229689, now seen corresponding path program 1 times [2023-04-02 06:27:42,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:42,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674654566] [2023-04-02 06:27:42,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:42,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:43,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674654566] [2023-04-02 06:27:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674654566] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:43,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:43,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:27:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250854805] [2023-04-02 06:27:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:43,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:43,338 INFO L87 Difference]: Start difference. First operand 280 states and 354 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:44,933 INFO L93 Difference]: Finished difference Result 460 states and 588 transitions. [2023-04-02 06:27:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:27:44,934 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:27:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:44,935 INFO L225 Difference]: With dead ends: 460 [2023-04-02 06:27:44,935 INFO L226 Difference]: Without dead ends: 456 [2023-04-02 06:27:44,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:27:44,936 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1073 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:44,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1458 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:27:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-04-02 06:27:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 276. [2023-04-02 06:27:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 268 states have (on average 1.294776119402985) internal successors, (347), 272 states have internal predecessors, (347), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 350 transitions. [2023-04-02 06:27:45,052 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 350 transitions. Word has length 71 [2023-04-02 06:27:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:45,052 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 350 transitions. [2023-04-02 06:27:45,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 350 transitions. [2023-04-02 06:27:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:27:45,053 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:45,053 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] [2023-04-02 06:27:45,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:27:45,054 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:45,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1369466207, now seen corresponding path program 1 times [2023-04-02 06:27:45,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:45,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237882267] [2023-04-02 06:27:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:45,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:45,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:45,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237882267] [2023-04-02 06:27:45,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237882267] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:45,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:45,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:27:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117678715] [2023-04-02 06:27:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:45,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:45,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:45,774 INFO L87 Difference]: Start difference. First operand 276 states and 350 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:47,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:47,455 INFO L93 Difference]: Finished difference Result 550 states and 726 transitions. [2023-04-02 06:27:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:27:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:27:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:47,458 INFO L225 Difference]: With dead ends: 550 [2023-04-02 06:27:47,458 INFO L226 Difference]: Without dead ends: 444 [2023-04-02 06:27:47,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:27:47,459 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1244 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:47,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1318 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:27:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-04-02 06:27:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 266. [2023-04-02 06:27:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 258 states have (on average 1.2868217054263567) internal successors, (332), 262 states have internal predecessors, (332), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2023-04-02 06:27:47,549 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 71 [2023-04-02 06:27:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:47,549 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2023-04-02 06:27:47,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2023-04-02 06:27:47,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:27:47,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:47,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:27:47,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:27:47,550 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:47,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1813914174, now seen corresponding path program 1 times [2023-04-02 06:27:47,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:47,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121786496] [2023-04-02 06:27:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:47,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:48,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:48,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121786496] [2023-04-02 06:27:48,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121786496] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:48,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:48,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 06:27:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102625622] [2023-04-02 06:27:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:48,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 06:27:48,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:48,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 06:27:48,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:27:48,615 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:50,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:50,447 INFO L93 Difference]: Finished difference Result 337 states and 409 transitions. [2023-04-02 06:27:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 06:27:50,447 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:27:50,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:50,448 INFO L225 Difference]: With dead ends: 337 [2023-04-02 06:27:50,449 INFO L226 Difference]: Without dead ends: 331 [2023-04-02 06:27:50,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 06:27:50,449 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 529 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:50,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 2645 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:27:50,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-04-02 06:27:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 273. [2023-04-02 06:27:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 265 states have (on average 1.2867924528301886) internal successors, (341), 269 states have internal predecessors, (341), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 344 transitions. [2023-04-02 06:27:50,577 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 344 transitions. Word has length 71 [2023-04-02 06:27:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:50,577 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 344 transitions. [2023-04-02 06:27:50,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 21 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 344 transitions. [2023-04-02 06:27:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:27:50,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:50,578 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 06:27:50,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:27:50,578 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:50,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:50,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2103332758, now seen corresponding path program 1 times [2023-04-02 06:27:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:50,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79641274] [2023-04-02 06:27:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:50,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:51,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:51,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79641274] [2023-04-02 06:27:51,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79641274] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:51,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:51,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:27:51,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325923289] [2023-04-02 06:27:51,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:51,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:27:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:27:51,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:27:51,151 INFO L87 Difference]: Start difference. First operand 273 states and 344 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:52,279 INFO L93 Difference]: Finished difference Result 421 states and 549 transitions. [2023-04-02 06:27:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:27:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:27:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:52,280 INFO L225 Difference]: With dead ends: 421 [2023-04-02 06:27:52,280 INFO L226 Difference]: Without dead ends: 386 [2023-04-02 06:27:52,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-04-02 06:27:52,281 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 692 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:52,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1392 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:27:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-04-02 06:27:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 238. [2023-04-02 06:27:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.2887931034482758) internal successors, (299), 234 states have internal predecessors, (299), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 302 transitions. [2023-04-02 06:27:52,374 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 302 transitions. Word has length 72 [2023-04-02 06:27:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:52,374 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 302 transitions. [2023-04-02 06:27:52,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 302 transitions. [2023-04-02 06:27:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:27:52,375 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:52,375 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 06:27:52,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:27:52,375 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:52,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1974667496, now seen corresponding path program 1 times [2023-04-02 06:27:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:52,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712275379] [2023-04-02 06:27:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:52,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:52,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:52,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712275379] [2023-04-02 06:27:52,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712275379] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:52,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:52,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:27:52,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270985024] [2023-04-02 06:27:52,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:52,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:52,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:52,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:52,957 INFO L87 Difference]: Start difference. First operand 238 states and 302 transitions. Second operand has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:54,741 INFO L93 Difference]: Finished difference Result 682 states and 918 transitions. [2023-04-02 06:27:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:27:54,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:27:54,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:54,743 INFO L225 Difference]: With dead ends: 682 [2023-04-02 06:27:54,743 INFO L226 Difference]: Without dead ends: 675 [2023-04-02 06:27:54,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-04-02 06:27:54,744 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 2168 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:54,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 569 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:27:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-04-02 06:27:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 242. [2023-04-02 06:27:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.2838983050847457) internal successors, (303), 238 states have internal predecessors, (303), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 306 transitions. [2023-04-02 06:27:54,852 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 306 transitions. Word has length 72 [2023-04-02 06:27:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:54,852 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 306 transitions. [2023-04-02 06:27:54,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 306 transitions. [2023-04-02 06:27:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:27:54,853 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:54,853 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 06:27:54,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:27:54,853 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:54,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:54,853 INFO L85 PathProgramCache]: Analyzing trace with hash -267754415, now seen corresponding path program 1 times [2023-04-02 06:27:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:54,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527769982] [2023-04-02 06:27:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:55,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:55,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527769982] [2023-04-02 06:27:55,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527769982] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:55,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:55,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:27:55,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791582612] [2023-04-02 06:27:55,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:55,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:27:55,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:55,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:27:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:27:55,454 INFO L87 Difference]: Start difference. First operand 242 states and 306 transitions. Second operand has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:58,349 INFO L93 Difference]: Finished difference Result 1506 states and 2103 transitions. [2023-04-02 06:27:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 06:27:58,349 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:27:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:58,353 INFO L225 Difference]: With dead ends: 1506 [2023-04-02 06:27:58,353 INFO L226 Difference]: Without dead ends: 1372 [2023-04-02 06:27:58,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:27:58,354 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 2873 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:58,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2873 Valid, 1224 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:27:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2023-04-02 06:27:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 250. [2023-04-02 06:27:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 244 states have (on average 1.2745901639344261) internal successors, (311), 246 states have internal predecessors, (311), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 314 transitions. [2023-04-02 06:27:58,469 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 314 transitions. Word has length 72 [2023-04-02 06:27:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:58,470 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 314 transitions. [2023-04-02 06:27:58,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 314 transitions. [2023-04-02 06:27:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:27:58,470 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:58,470 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] [2023-04-02 06:27:58,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:27:58,470 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:58,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1596093643, now seen corresponding path program 1 times [2023-04-02 06:27:58,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:58,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579121016] [2023-04-02 06:27:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:58,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:58,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:58,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579121016] [2023-04-02 06:27:58,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579121016] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:27:58,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:27:58,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:27:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163216295] [2023-04-02 06:27:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:27:58,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:27:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:27:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:27:58,848 INFO L87 Difference]: Start difference. First operand 250 states and 314 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:27:59,826 INFO L93 Difference]: Finished difference Result 407 states and 523 transitions. [2023-04-02 06:27:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:27:59,827 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-02 06:27:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:27:59,828 INFO L225 Difference]: With dead ends: 407 [2023-04-02 06:27:59,828 INFO L226 Difference]: Without dead ends: 400 [2023-04-02 06:27:59,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:27:59,829 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 516 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:27:59,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 475 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:27:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-04-02 06:27:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 246. [2023-04-02 06:27:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 240 states have (on average 1.275) internal successors, (306), 242 states have internal predecessors, (306), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 309 transitions. [2023-04-02 06:27:59,955 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 309 transitions. Word has length 73 [2023-04-02 06:27:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:27:59,955 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 309 transitions. [2023-04-02 06:27:59,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:27:59,955 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 309 transitions. [2023-04-02 06:27:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:27:59,956 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:27:59,956 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] [2023-04-02 06:27:59,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:27:59,956 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:27:59,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:27:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash -471613161, now seen corresponding path program 1 times [2023-04-02 06:27:59,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:27:59,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210373416] [2023-04-02 06:27:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:59,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:27:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:00,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210373416] [2023-04-02 06:28:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210373416] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:00,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:00,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:00,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975859362] [2023-04-02 06:28:00,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:00,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:00,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:00,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:00,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:00,372 INFO L87 Difference]: Start difference. First operand 246 states and 309 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:01,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:01,577 INFO L93 Difference]: Finished difference Result 544 states and 716 transitions. [2023-04-02 06:28:01,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:28:01,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-02 06:28:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:01,579 INFO L225 Difference]: With dead ends: 544 [2023-04-02 06:28:01,579 INFO L226 Difference]: Without dead ends: 410 [2023-04-02 06:28:01,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:28:01,581 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 873 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:01,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 636 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:28:01,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-04-02 06:28:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 238. [2023-04-02 06:28:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.2758620689655173) internal successors, (296), 234 states have internal predecessors, (296), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 299 transitions. [2023-04-02 06:28:01,693 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 299 transitions. Word has length 73 [2023-04-02 06:28:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:01,693 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 299 transitions. [2023-04-02 06:28:01,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 299 transitions. [2023-04-02 06:28:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:28:01,694 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:01,694 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] [2023-04-02 06:28:01,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:28:01,694 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:01,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1895596241, now seen corresponding path program 1 times [2023-04-02 06:28:01,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:01,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288941101] [2023-04-02 06:28:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:01,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:02,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:02,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:02,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288941101] [2023-04-02 06:28:02,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288941101] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:02,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:02,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 06:28:02,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627447670] [2023-04-02 06:28:02,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:02,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 06:28:02,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:02,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 06:28:02,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:28:02,572 INFO L87 Difference]: Start difference. First operand 238 states and 299 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:04,221 INFO L93 Difference]: Finished difference Result 266 states and 327 transitions. [2023-04-02 06:28:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 06:28:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-02 06:28:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:04,223 INFO L225 Difference]: With dead ends: 266 [2023-04-02 06:28:04,223 INFO L226 Difference]: Without dead ends: 246 [2023-04-02 06:28:04,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2023-04-02 06:28:04,224 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 559 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:04,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1237 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:28:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-04-02 06:28:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2023-04-02 06:28:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.271551724137931) internal successors, (295), 234 states have internal predecessors, (295), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 298 transitions. [2023-04-02 06:28:04,330 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 298 transitions. Word has length 74 [2023-04-02 06:28:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:04,330 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 298 transitions. [2023-04-02 06:28:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 298 transitions. [2023-04-02 06:28:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:28:04,331 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:04,331 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] [2023-04-02 06:28:04,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:28:04,331 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:04,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1532854129, now seen corresponding path program 1 times [2023-04-02 06:28:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297402010] [2023-04-02 06:28:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:05,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297402010] [2023-04-02 06:28:05,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297402010] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:05,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:05,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-02 06:28:05,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240648316] [2023-04-02 06:28:05,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:05,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 06:28:05,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 06:28:05,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:28:05,550 INFO L87 Difference]: Start difference. First operand 238 states and 298 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:08,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:08,557 INFO L93 Difference]: Finished difference Result 503 states and 661 transitions. [2023-04-02 06:28:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-02 06:28:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-02 06:28:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:08,558 INFO L225 Difference]: With dead ends: 503 [2023-04-02 06:28:08,559 INFO L226 Difference]: Without dead ends: 497 [2023-04-02 06:28:08,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=300, Invalid=1592, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 06:28:08,560 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 999 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:08,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 3260 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:28:08,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-04-02 06:28:08,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 249. [2023-04-02 06:28:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 243 states have (on average 1.271604938271605) internal successors, (309), 245 states have internal predecessors, (309), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 312 transitions. [2023-04-02 06:28:08,668 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 312 transitions. Word has length 74 [2023-04-02 06:28:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:08,668 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 312 transitions. [2023-04-02 06:28:08,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 312 transitions. [2023-04-02 06:28:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:28:08,669 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:08,669 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] [2023-04-02 06:28:08,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:28:08,669 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:08,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash 692440295, now seen corresponding path program 1 times [2023-04-02 06:28:08,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:08,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119466459] [2023-04-02 06:28:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:08,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:09,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:09,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119466459] [2023-04-02 06:28:09,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119466459] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:09,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:09,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:28:09,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383088475] [2023-04-02 06:28:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:09,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:28:09,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:09,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:28:09,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:28:09,278 INFO L87 Difference]: Start difference. First operand 249 states and 312 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:11,336 INFO L93 Difference]: Finished difference Result 629 states and 842 transitions. [2023-04-02 06:28:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:28:11,337 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-02 06:28:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:11,339 INFO L225 Difference]: With dead ends: 629 [2023-04-02 06:28:11,339 INFO L226 Difference]: Without dead ends: 623 [2023-04-02 06:28:11,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:28:11,340 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 994 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:11,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 2068 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:28:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-04-02 06:28:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 232. [2023-04-02 06:28:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.2687224669603525) internal successors, (288), 228 states have internal predecessors, (288), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 291 transitions. [2023-04-02 06:28:11,448 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 291 transitions. Word has length 75 [2023-04-02 06:28:11,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:11,448 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 291 transitions. [2023-04-02 06:28:11,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:11,449 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 291 transitions. [2023-04-02 06:28:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:28:11,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:11,449 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] [2023-04-02 06:28:11,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:28:11,450 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:11,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1855271168, now seen corresponding path program 1 times [2023-04-02 06:28:11,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:11,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37128853] [2023-04-02 06:28:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:11,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:12,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:12,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37128853] [2023-04-02 06:28:12,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37128853] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:12,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:12,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:28:12,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007595054] [2023-04-02 06:28:12,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:12,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:28:12,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:28:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:28:12,022 INFO L87 Difference]: Start difference. First operand 232 states and 291 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:13,633 INFO L93 Difference]: Finished difference Result 558 states and 761 transitions. [2023-04-02 06:28:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:28:13,633 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-02 06:28:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:13,635 INFO L225 Difference]: With dead ends: 558 [2023-04-02 06:28:13,635 INFO L226 Difference]: Without dead ends: 534 [2023-04-02 06:28:13,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:28:13,636 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1184 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:13,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 870 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:28:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-04-02 06:28:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 208. [2023-04-02 06:28:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.2843137254901962) internal successors, (262), 204 states have internal predecessors, (262), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 265 transitions. [2023-04-02 06:28:13,742 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 265 transitions. Word has length 75 [2023-04-02 06:28:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:13,742 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 265 transitions. [2023-04-02 06:28:13,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 265 transitions. [2023-04-02 06:28:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:28:13,743 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:13,743 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] [2023-04-02 06:28:13,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:28:13,743 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:13,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1103141339, now seen corresponding path program 1 times [2023-04-02 06:28:13,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:13,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904356214] [2023-04-02 06:28:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:14,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:14,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904356214] [2023-04-02 06:28:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904356214] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:14,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:14,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:28:14,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121276614] [2023-04-02 06:28:14,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:14,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:28:14,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:14,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:28:14,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:28:14,046 INFO L87 Difference]: Start difference. First operand 208 states and 265 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:15,387 INFO L93 Difference]: Finished difference Result 1040 states and 1481 transitions. [2023-04-02 06:28:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:28:15,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2023-04-02 06:28:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:15,389 INFO L225 Difference]: With dead ends: 1040 [2023-04-02 06:28:15,389 INFO L226 Difference]: Without dead ends: 936 [2023-04-02 06:28:15,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:28:15,390 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 825 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:15,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1264 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:28:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2023-04-02 06:28:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 310. [2023-04-02 06:28:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 306 states have (on average 1.3431372549019607) internal successors, (411), 306 states have internal predecessors, (411), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 414 transitions. [2023-04-02 06:28:15,588 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 414 transitions. Word has length 97 [2023-04-02 06:28:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:15,588 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 414 transitions. [2023-04-02 06:28:15,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 414 transitions. [2023-04-02 06:28:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:28:15,589 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:15,589 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] [2023-04-02 06:28:15,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-02 06:28:15,589 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:15,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1421020674, now seen corresponding path program 1 times [2023-04-02 06:28:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:15,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115635821] [2023-04-02 06:28:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:15,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:15,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115635821] [2023-04-02 06:28:15,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115635821] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:15,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:15,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:28:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052982207] [2023-04-02 06:28:15,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:15,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:28:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:15,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:28:15,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:28:15,882 INFO L87 Difference]: Start difference. First operand 310 states and 414 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:17,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:17,281 INFO L93 Difference]: Finished difference Result 1238 states and 1768 transitions. [2023-04-02 06:28:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:28:17,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:28:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:17,284 INFO L225 Difference]: With dead ends: 1238 [2023-04-02 06:28:17,284 INFO L226 Difference]: Without dead ends: 1032 [2023-04-02 06:28:17,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:28:17,285 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 631 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:17,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 777 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:28:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2023-04-02 06:28:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 412. [2023-04-02 06:28:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 408 states have (on average 1.3725490196078431) internal successors, (560), 408 states have internal predecessors, (560), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 563 transitions. [2023-04-02 06:28:17,575 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 563 transitions. Word has length 99 [2023-04-02 06:28:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:17,575 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 563 transitions. [2023-04-02 06:28:17,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 563 transitions. [2023-04-02 06:28:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:28:17,576 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:17,576 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] [2023-04-02 06:28:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-02 06:28:17,576 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:17,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:17,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1965301700, now seen corresponding path program 1 times [2023-04-02 06:28:17,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:17,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445617615] [2023-04-02 06:28:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:17,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445617615] [2023-04-02 06:28:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445617615] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:17,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:17,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:28:17,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453099466] [2023-04-02 06:28:17,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:28:17,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:17,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:28:17,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:28:17,879 INFO L87 Difference]: Start difference. First operand 412 states and 563 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:19,402 INFO L93 Difference]: Finished difference Result 1340 states and 1917 transitions. [2023-04-02 06:28:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:28:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:28:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:19,405 INFO L225 Difference]: With dead ends: 1340 [2023-04-02 06:28:19,405 INFO L226 Difference]: Without dead ends: 1134 [2023-04-02 06:28:19,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:28:19,406 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 631 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:19,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 706 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:28:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2023-04-02 06:28:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 616. [2023-04-02 06:28:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 612 states have (on average 1.4019607843137254) internal successors, (858), 612 states have internal predecessors, (858), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 861 transitions. [2023-04-02 06:28:19,886 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 861 transitions. Word has length 99 [2023-04-02 06:28:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:19,887 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 861 transitions. [2023-04-02 06:28:19,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 861 transitions. [2023-04-02 06:28:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:28:19,888 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:19,888 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] [2023-04-02 06:28:19,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-02 06:28:19,888 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:19,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 304365447, now seen corresponding path program 1 times [2023-04-02 06:28:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301266178] [2023-04-02 06:28:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:20,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:20,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301266178] [2023-04-02 06:28:20,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301266178] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:20,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:20,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:28:20,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574122861] [2023-04-02 06:28:20,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:20,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:28:20,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:28:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:28:20,293 INFO L87 Difference]: Start difference. First operand 616 states and 861 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:21,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:21,521 INFO L93 Difference]: Finished difference Result 1334 states and 1908 transitions. [2023-04-02 06:28:21,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:28:21,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:28:21,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:21,524 INFO L225 Difference]: With dead ends: 1334 [2023-04-02 06:28:21,524 INFO L226 Difference]: Without dead ends: 822 [2023-04-02 06:28:21,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:21,525 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 262 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:21,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 379 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:28:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-04-02 06:28:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 820. [2023-04-02 06:28:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 816 states have (on average 1.4068627450980393) internal successors, (1148), 816 states have internal predecessors, (1148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1151 transitions. [2023-04-02 06:28:22,214 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1151 transitions. Word has length 99 [2023-04-02 06:28:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:22,214 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1151 transitions. [2023-04-02 06:28:22,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1151 transitions. [2023-04-02 06:28:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:28:22,215 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:22,215 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] [2023-04-02 06:28:22,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-02 06:28:22,215 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:22,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash -435374874, now seen corresponding path program 1 times [2023-04-02 06:28:22,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:22,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761045618] [2023-04-02 06:28:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:22,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:22,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761045618] [2023-04-02 06:28:22,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761045618] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:22,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:22,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:28:22,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768422996] [2023-04-02 06:28:22,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:22,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:28:22,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:22,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:28:22,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:28:22,486 INFO L87 Difference]: Start difference. First operand 820 states and 1151 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:23,378 INFO L93 Difference]: Finished difference Result 1544 states and 2197 transitions. [2023-04-02 06:28:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:28:23,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:28:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:23,381 INFO L225 Difference]: With dead ends: 1544 [2023-04-02 06:28:23,381 INFO L226 Difference]: Without dead ends: 814 [2023-04-02 06:28:23,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:28:23,382 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:23,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 310 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:28:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-04-02 06:28:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2023-04-02 06:28:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 810 states have (on average 1.3925925925925926) internal successors, (1128), 810 states have internal predecessors, (1128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1131 transitions. [2023-04-02 06:28:24,037 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1131 transitions. Word has length 99 [2023-04-02 06:28:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:24,037 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1131 transitions. [2023-04-02 06:28:24,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1131 transitions. [2023-04-02 06:28:24,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:28:24,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:24,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:24,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-02 06:28:24,038 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:24,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1342819888, now seen corresponding path program 1 times [2023-04-02 06:28:24,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:24,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087617828] [2023-04-02 06:28:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:24,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:24,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087617828] [2023-04-02 06:28:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087617828] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:24,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:24,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:28:24,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765578940] [2023-04-02 06:28:24,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:24,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:28:24,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:24,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:28:24,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:28:24,367 INFO L87 Difference]: Start difference. First operand 814 states and 1131 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:26,164 INFO L93 Difference]: Finished difference Result 1632 states and 2304 transitions. [2023-04-02 06:28:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:28:26,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:28:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:26,168 INFO L225 Difference]: With dead ends: 1632 [2023-04-02 06:28:26,168 INFO L226 Difference]: Without dead ends: 1428 [2023-04-02 06:28:26,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:28:26,169 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 596 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:26,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 741 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:28:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2023-04-02 06:28:27,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1016. [2023-04-02 06:28:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1012 states have (on average 1.401185770750988) internal successors, (1418), 1012 states have internal predecessors, (1418), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1421 transitions. [2023-04-02 06:28:27,009 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1421 transitions. Word has length 99 [2023-04-02 06:28:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:27,010 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1421 transitions. [2023-04-02 06:28:27,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1421 transitions. [2023-04-02 06:28:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:28:27,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:27,011 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] [2023-04-02 06:28:27,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-02 06:28:27,011 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:27,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:27,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1832727818, now seen corresponding path program 1 times [2023-04-02 06:28:27,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:27,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319664727] [2023-04-02 06:28:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:27,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:27,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319664727] [2023-04-02 06:28:27,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319664727] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:27,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:27,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:28:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782890211] [2023-04-02 06:28:27,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:27,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:28:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:28:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:28:27,308 INFO L87 Difference]: Start difference. First operand 1016 states and 1421 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:29,319 INFO L93 Difference]: Finished difference Result 1834 states and 2594 transitions. [2023-04-02 06:28:29,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:28:29,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:28:29,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:29,323 INFO L225 Difference]: With dead ends: 1834 [2023-04-02 06:28:29,323 INFO L226 Difference]: Without dead ends: 1630 [2023-04-02 06:28:29,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:28:29,325 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 565 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:29,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 805 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:28:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-04-02 06:28:30,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1218. [2023-04-02 06:28:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1214 states have (on average 1.4069192751235584) internal successors, (1708), 1214 states have internal predecessors, (1708), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1711 transitions. [2023-04-02 06:28:30,371 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1711 transitions. Word has length 99 [2023-04-02 06:28:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:30,372 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1711 transitions. [2023-04-02 06:28:30,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1711 transitions. [2023-04-02 06:28:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:28:30,373 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:30,373 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] [2023-04-02 06:28:30,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-02 06:28:30,373 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:30,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:30,373 INFO L85 PathProgramCache]: Analyzing trace with hash 786226718, now seen corresponding path program 1 times [2023-04-02 06:28:30,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:30,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864989478] [2023-04-02 06:28:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:30,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864989478] [2023-04-02 06:28:30,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864989478] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:30,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:30,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:28:30,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758727201] [2023-04-02 06:28:30,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:30,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:28:30,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:30,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:28:30,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:28:30,642 INFO L87 Difference]: Start difference. First operand 1218 states and 1711 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:33,141 INFO L93 Difference]: Finished difference Result 3358 states and 4753 transitions. [2023-04-02 06:28:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:28:33,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:28:33,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:33,145 INFO L225 Difference]: With dead ends: 3358 [2023-04-02 06:28:33,145 INFO L226 Difference]: Without dead ends: 2244 [2023-04-02 06:28:33,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:28:33,147 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 77 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:33,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 335 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:28:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2023-04-02 06:28:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2154. [2023-04-02 06:28:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2150 states have (on average 1.3990697674418604) internal successors, (3008), 2150 states have internal predecessors, (3008), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3011 transitions. [2023-04-02 06:28:35,025 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3011 transitions. Word has length 100 [2023-04-02 06:28:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:35,025 INFO L495 AbstractCegarLoop]: Abstraction has 2154 states and 3011 transitions. [2023-04-02 06:28:35,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3011 transitions. [2023-04-02 06:28:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 06:28:35,026 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:35,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:35,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-02 06:28:35,026 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:35,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash 778756560, now seen corresponding path program 1 times [2023-04-02 06:28:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:35,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208017635] [2023-04-02 06:28:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:35,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:35,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208017635] [2023-04-02 06:28:35,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208017635] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:35,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:35,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:28:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645542722] [2023-04-02 06:28:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:28:35,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:28:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:28:35,307 INFO L87 Difference]: Start difference. First operand 2154 states and 3011 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:39,416 INFO L93 Difference]: Finished difference Result 6078 states and 8499 transitions. [2023-04-02 06:28:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:28:39,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-02 06:28:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:39,421 INFO L225 Difference]: With dead ends: 6078 [2023-04-02 06:28:39,421 INFO L226 Difference]: Without dead ends: 4028 [2023-04-02 06:28:39,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:28:39,424 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 70 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:39,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 335 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:28:39,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2023-04-02 06:28:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 3850. [2023-04-02 06:28:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3846 states have (on average 1.3866354654186168) internal successors, (5333), 3846 states have internal predecessors, (5333), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5336 transitions. [2023-04-02 06:28:42,993 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5336 transitions. Word has length 101 [2023-04-02 06:28:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:42,993 INFO L495 AbstractCegarLoop]: Abstraction has 3850 states and 5336 transitions. [2023-04-02 06:28:42,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5336 transitions. [2023-04-02 06:28:42,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:28:42,994 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:42,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:42,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-02 06:28:42,994 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:42,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:42,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1718667191, now seen corresponding path program 1 times [2023-04-02 06:28:42,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:42,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62744951] [2023-04-02 06:28:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:42,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:43,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:43,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62744951] [2023-04-02 06:28:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62744951] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:43,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:28:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080219233] [2023-04-02 06:28:43,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:43,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:28:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:28:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:28:43,282 INFO L87 Difference]: Start difference. First operand 3850 states and 5336 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:50,339 INFO L93 Difference]: Finished difference Result 10990 states and 15166 transitions. [2023-04-02 06:28:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:28:50,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-02 06:28:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:50,348 INFO L225 Difference]: With dead ends: 10990 [2023-04-02 06:28:50,348 INFO L226 Difference]: Without dead ends: 7244 [2023-04-02 06:28:50,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:28:50,354 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 63 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:50,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 334 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:28:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7244 states. [2023-04-02 06:28:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7244 to 6890. [2023-04-02 06:28:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6890 states, 6886 states have (on average 1.3666860296253267) internal successors, (9411), 6886 states have internal predecessors, (9411), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 9414 transitions. [2023-04-02 06:28:56,750 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 9414 transitions. Word has length 102 [2023-04-02 06:28:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:56,750 INFO L495 AbstractCegarLoop]: Abstraction has 6890 states and 9414 transitions. [2023-04-02 06:28:56,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 9414 transitions. [2023-04-02 06:28:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:28:56,751 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:56,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:56,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-04-02 06:28:56,751 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:56,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash -43122609, now seen corresponding path program 1 times [2023-04-02 06:28:56,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:56,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574846046] [2023-04-02 06:28:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:57,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574846046] [2023-04-02 06:28:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574846046] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:57,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:57,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:28:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306093771] [2023-04-02 06:28:57,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:57,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:28:57,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:57,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:28:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:28:57,102 INFO L87 Difference]: Start difference. First operand 6890 states and 9414 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:09,727 INFO L93 Difference]: Finished difference Result 19758 states and 26784 transitions. [2023-04-02 06:29:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:29:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-02 06:29:09,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:09,755 INFO L225 Difference]: With dead ends: 19758 [2023-04-02 06:29:09,756 INFO L226 Difference]: Without dead ends: 12972 [2023-04-02 06:29:09,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:29:09,768 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 53 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:09,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 333 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:29:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12972 states. [2023-04-02 06:29:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12972 to 12266. [2023-04-02 06:29:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12266 states, 12262 states have (on average 1.3393410536617192) internal successors, (16423), 12262 states have internal predecessors, (16423), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12266 states to 12266 states and 16426 transitions. [2023-04-02 06:29:21,483 INFO L78 Accepts]: Start accepts. Automaton has 12266 states and 16426 transitions. Word has length 103 [2023-04-02 06:29:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:21,484 INFO L495 AbstractCegarLoop]: Abstraction has 12266 states and 16426 transitions. [2023-04-02 06:29:21,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 12266 states and 16426 transitions. [2023-04-02 06:29:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:29:21,486 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:21,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:21,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-04-02 06:29:21,487 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:21,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash -914102308, now seen corresponding path program 1 times [2023-04-02 06:29:21,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:21,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992442088] [2023-04-02 06:29:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:21,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992442088] [2023-04-02 06:29:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992442088] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:21,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:29:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599936591] [2023-04-02 06:29:21,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:21,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:29:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:29:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:29:21,925 INFO L87 Difference]: Start difference. First operand 12266 states and 16426 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:36,998 INFO L93 Difference]: Finished difference Result 14550 states and 19252 transitions. [2023-04-02 06:29:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:29:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-04-02 06:29:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:37,027 INFO L225 Difference]: With dead ends: 14550 [2023-04-02 06:29:37,027 INFO L226 Difference]: Without dead ends: 14548 [2023-04-02 06:29:37,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:29:37,033 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 251 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:37,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 799 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:29:37,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14548 states. [2023-04-02 06:29:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14548 to 12266. [2023-04-02 06:29:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12266 states, 12262 states have (on average 1.3236829228510847) internal successors, (16231), 12262 states have internal predecessors, (16231), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12266 states to 12266 states and 16234 transitions. [2023-04-02 06:29:49,037 INFO L78 Accepts]: Start accepts. Automaton has 12266 states and 16234 transitions. Word has length 104 [2023-04-02 06:29:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:49,037 INFO L495 AbstractCegarLoop]: Abstraction has 12266 states and 16234 transitions. [2023-04-02 06:29:49,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 12266 states and 16234 transitions. [2023-04-02 06:29:49,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-02 06:29:49,042 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:49,043 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:49,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-04-02 06:29:49,043 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:49,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:49,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1231435975, now seen corresponding path program 1 times [2023-04-02 06:29:49,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485464858] [2023-04-02 06:29:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:49,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 06:29:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:49,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485464858] [2023-04-02 06:29:49,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485464858] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:49,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:49,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:29:49,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121172635] [2023-04-02 06:29:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:49,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:29:49,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:49,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:29:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:29:49,547 INFO L87 Difference]: Start difference. First operand 12266 states and 16234 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:15,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:15,108 INFO L93 Difference]: Finished difference Result 36980 states and 48870 transitions. [2023-04-02 06:30:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:30:15,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132 [2023-04-02 06:30:15,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:15,159 INFO L225 Difference]: With dead ends: 36980 [2023-04-02 06:30:15,159 INFO L226 Difference]: Without dead ends: 24806 [2023-04-02 06:30:15,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:30:15,182 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 669 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:15,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 461 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:30:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24806 states. [2023-04-02 06:30:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24806 to 12266. [2023-04-02 06:30:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12266 states, 12262 states have (on average 1.3235198173218072) internal successors, (16229), 12262 states have internal predecessors, (16229), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12266 states to 12266 states and 16232 transitions. [2023-04-02 06:30:27,533 INFO L78 Accepts]: Start accepts. Automaton has 12266 states and 16232 transitions. Word has length 132 [2023-04-02 06:30:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:27,533 INFO L495 AbstractCegarLoop]: Abstraction has 12266 states and 16232 transitions. [2023-04-02 06:30:27,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 12266 states and 16232 transitions. [2023-04-02 06:30:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:30:27,539 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:27,539 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:30:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-04-02 06:30:27,539 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:27,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1575685198, now seen corresponding path program 1 times [2023-04-02 06:30:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:27,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819942985] [2023-04-02 06:30:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:28,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:30:28,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:28,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819942985] [2023-04-02 06:30:28,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819942985] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:30:28,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497818278] [2023-04-02 06:30:28,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:28,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:30:28,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:30:28,292 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 06:30:28,295 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 06:30:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:28,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 06:30:28,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:30:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:30:29,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 06:30:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:30:31,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497818278] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 06:30:31,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 06:30:31,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2023-04-02 06:30:31,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874843706] [2023-04-02 06:30:31,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 06:30:31,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 06:30:31,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:31,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 06:30:31,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:30:31,218 INFO L87 Difference]: Start difference. First operand 12266 states and 16232 transitions. Second operand has 27 states, 27 states have (on average 11.222222222222221) internal successors, (303), 25 states have internal predecessors, (303), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)