/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:37:50,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:37:50,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:37:50,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:37:50,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:37:50,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:37:50,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:37:50,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:37:50,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:37:50,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:37:50,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:37:50,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:37:50,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:37:50,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:37:50,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:37:50,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:37:50,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:37:50,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:37:50,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:37:50,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:37:50,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:37:50,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:37:50,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:37:50,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:37:50,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:37:50,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:37:50,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:37:50,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:37:50,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:37:50,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:37:50,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:37:50,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:37:50,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:37:50,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:37:50,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:37:50,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:37:50,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:37:50,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:37:50,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:37:50,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:37:50,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:37:50,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:37:50,954 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:37:50,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:37:50,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:37:50,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:37:50,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:37:50,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:37:50,956 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:37:50,956 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:37:50,956 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:37:50,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:37:50,957 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:37:50,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:37:50,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:37:50,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:37:50,958 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:37:50,958 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:37:50,958 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:37:50,958 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:37:50,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:37:50,959 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:37:50,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:37:50,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:37:50,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:37:50,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:37:50,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:37:50,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:37:50,960 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:37:50,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:37:50,960 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:37:50,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:37:50,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:37:50,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:37:50,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:37:50,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:37:50,961 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:37:50,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:37:50,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:37:50,961 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:37:50,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:37:50,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:37:50,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:37:50,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:37:51,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:37:51,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:37:51,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:37:51,200 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:37:51,201 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:37:51,202 INFO L432 ainManager$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+sep-reducer.c [2023-04-01 06:37:52,309 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:37:52,648 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:37:52,648 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+sep-reducer.c [2023-04-01 06:37:52,674 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9aa1a1549/ba8d1a1bef4b46f2b924ac845ba9a43f/FLAG0bedf5ea1 [2023-04-01 06:37:52,685 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9aa1a1549/ba8d1a1bef4b46f2b924ac845ba9a43f [2023-04-01 06:37:52,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:37:52,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:37:52,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:37:52,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:37:52,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:37:52,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:37:52" (1/1) ... [2023-04-01 06:37:52,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff40f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:52, skipping insertion in model container [2023-04-01 06:37:52,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:37:52" (1/1) ... [2023-04-01 06:37:52,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:37:52,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:37:53,106 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+sep-reducer.c[18857,18870] [2023-04-01 06:37:53,146 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+sep-reducer.c[25957,25970] [2023-04-01 06:37:53,160 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+sep-reducer.c[29482,29495] [2023-04-01 06:37:53,170 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+sep-reducer.c[32880,32893] [2023-04-01 06:37:53,184 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+sep-reducer.c[36938,36951] [2023-04-01 06:37:53,196 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+sep-reducer.c[40412,40425] [2023-04-01 06:37:53,205 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+sep-reducer.c[43977,43990] [2023-04-01 06:37:53,214 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+sep-reducer.c[47412,47425] [2023-04-01 06:37:53,224 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+sep-reducer.c[51091,51104] [2023-04-01 06:37:53,241 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+sep-reducer.c[54693,54706] [2023-04-01 06:37:53,249 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+sep-reducer.c[58222,58235] [2023-04-01 06:37:53,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:37:53,323 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:37:53,417 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+sep-reducer.c[18857,18870] [2023-04-01 06:37:53,445 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+sep-reducer.c[25957,25970] [2023-04-01 06:37:53,460 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+sep-reducer.c[29482,29495] [2023-04-01 06:37:53,480 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+sep-reducer.c[32880,32893] [2023-04-01 06:37:53,508 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+sep-reducer.c[36938,36951] [2023-04-01 06:37:53,522 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+sep-reducer.c[40412,40425] [2023-04-01 06:37:53,535 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+sep-reducer.c[43977,43990] [2023-04-01 06:37:53,547 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+sep-reducer.c[47412,47425] [2023-04-01 06:37:53,561 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+sep-reducer.c[51091,51104] [2023-04-01 06:37:53,574 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+sep-reducer.c[54693,54706] [2023-04-01 06:37:53,587 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+sep-reducer.c[58222,58235] [2023-04-01 06:37:53,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:37:53,625 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:37:53,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53 WrapperNode [2023-04-01 06:37:53,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:37:53,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:37:53,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:37:53,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:37:53,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,758 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:37:53,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:37:53,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:37:53,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:37:53,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (1/1) ... [2023-04-01 06:37:53,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:37:53,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:37:53,819 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) [2023-04-01 06:37:53,839 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 [2023-04-01 06:37:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:37:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:37:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:37:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:37:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:37:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:37:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:37:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:37:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:37:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:37:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:37:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:37:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:37:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:37:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:37:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:37:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:37:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:37:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:37:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:37:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:37:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:37:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:37:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:37:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:37:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:37:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:37:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:37:54,022 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:37:54,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:37:55,567 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:37:55,640 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:37:55,641 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:37:55,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:37:55 BoogieIcfgContainer [2023-04-01 06:37:55,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:37:55,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:37:55,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:37:55,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:37:55,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:37:52" (1/3) ... [2023-04-01 06:37:55,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bcd336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:37:55, skipping insertion in model container [2023-04-01 06:37:55,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:37:53" (2/3) ... [2023-04-01 06:37:55,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bcd336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:37:55, skipping insertion in model container [2023-04-01 06:37:55,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:37:55" (3/3) ... [2023-04-01 06:37:55,653 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-01 06:37:55,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:37:55,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-04-01 06:37:55,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:37:55,743 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=FINITE_AUTOMATA, 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;@33ea4899, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:37:55,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-04-01 06:37:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 557 states, 541 states have (on average 1.7818853974121995) internal successors, (964), 552 states have internal predecessors, (964), 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) [2023-04-01 06:37:55,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-01 06:37:55,769 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:37:55,770 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] [2023-04-01 06:37:55,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr7ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:37:55,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:37:55,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1547624305, now seen corresponding path program 1 times [2023-04-01 06:37:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:37:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214570244] [2023-04-01 06:37:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:37:55,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:37:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:37:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:37:56,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:37:56,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214570244] [2023-04-01 06:37:56,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214570244] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:37:56,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:37:56,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:37:56,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550924273] [2023-04-01 06:37:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:37:56,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:37:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:37:56,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:37:56,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:37:56,509 INFO L87 Difference]: Start difference. First operand has 557 states, 541 states have (on average 1.7818853974121995) internal successors, (964), 552 states have internal predecessors, (964), 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 5 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) [2023-04-01 06:37:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:37:57,055 INFO L93 Difference]: Finished difference Result 650 states and 1099 transitions. [2023-04-01 06:37:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:37:57,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2023-04-01 06:37:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:37:57,074 INFO L225 Difference]: With dead ends: 650 [2023-04-01 06:37:57,075 INFO L226 Difference]: Without dead ends: 369 [2023-04-01 06:37:57,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:37:57,086 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1765 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:37:57,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 441 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:37:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-04-01 06:37:57,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-04-01 06:37:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 355 states have (on average 1.2394366197183098) internal successors, (440), 365 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) [2023-04-01 06:37:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 443 transitions. [2023-04-01 06:37:57,163 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 443 transitions. Word has length 63 [2023-04-01 06:37:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:37:57,164 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 443 transitions. [2023-04-01 06:37:57,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-04-01 06:37:57,164 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 443 transitions. [2023-04-01 06:37:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-01 06:37:57,171 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:37:57,171 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] [2023-04-01 06:37:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:37:57,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:37:57,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:37:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1484569249, now seen corresponding path program 1 times [2023-04-01 06:37:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:37:57,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908447143] [2023-04-01 06:37:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:37:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:37:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:37:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:37:57,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:37:57,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908447143] [2023-04-01 06:37:57,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908447143] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:37:57,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:37:57,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:37:57,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114704545] [2023-04-01 06:37:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:37:57,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:37:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:37:57,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:37:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:37:57,473 INFO L87 Difference]: Start difference. First operand 369 states and 443 transitions. Second operand has 5 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) [2023-04-01 06:37:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:37:57,717 INFO L93 Difference]: Finished difference Result 510 states and 617 transitions. [2023-04-01 06:37:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:37:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2023-04-01 06:37:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:37:57,720 INFO L225 Difference]: With dead ends: 510 [2023-04-01 06:37:57,720 INFO L226 Difference]: Without dead ends: 337 [2023-04-01 06:37:57,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:37:57,723 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1132 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:37:57,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 237 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:37:57,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-04-01 06:37:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2023-04-01 06:37:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 323 states have (on average 1.2476780185758514) internal successors, (403), 333 states have internal predecessors, (403), 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) [2023-04-01 06:37:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 406 transitions. [2023-04-01 06:37:57,759 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 406 transitions. Word has length 63 [2023-04-01 06:37:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:37:57,760 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 406 transitions. [2023-04-01 06:37:57,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-04-01 06:37:57,761 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 406 transitions. [2023-04-01 06:37:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-01 06:37:57,762 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:37:57,762 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] [2023-04-01 06:37:57,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:37:57,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:37:57,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:37:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1320704191, now seen corresponding path program 1 times [2023-04-01 06:37:57,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:37:57,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169577988] [2023-04-01 06:37:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:37:57,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:37:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:37:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:37:58,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:37:58,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169577988] [2023-04-01 06:37:58,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169577988] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:37:58,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:37:58,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:37:58,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764995044] [2023-04-01 06:37:58,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:37:58,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:37:58,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:37:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:37:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:37:58,006 INFO L87 Difference]: Start difference. First operand 337 states and 406 transitions. Second operand has 5 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) [2023-04-01 06:37:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:37:58,177 INFO L93 Difference]: Finished difference Result 442 states and 531 transitions. [2023-04-01 06:37:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:37:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2023-04-01 06:37:58,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:37:58,180 INFO L225 Difference]: With dead ends: 442 [2023-04-01 06:37:58,180 INFO L226 Difference]: Without dead ends: 273 [2023-04-01 06:37:58,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:37:58,182 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 923 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:37:58,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 205 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:37:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-04-01 06:37:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-04-01 06:37:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.250965250965251) internal successors, (324), 269 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) [2023-04-01 06:37:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 327 transitions. [2023-04-01 06:37:58,205 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 327 transitions. Word has length 63 [2023-04-01 06:37:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:37:58,206 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 327 transitions. [2023-04-01 06:37:58,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-04-01 06:37:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 327 transitions. [2023-04-01 06:37:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-01 06:37:58,208 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:37:58,208 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] [2023-04-01 06:37:58,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:37:58,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:37:58,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:37:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1651845730, now seen corresponding path program 1 times [2023-04-01 06:37:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:37:58,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932141289] [2023-04-01 06:37:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:37:58,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:37:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:37:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:37:58,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:37:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932141289] [2023-04-01 06:37:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932141289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:37:58,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:37:58,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:37:58,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143468994] [2023-04-01 06:37:58,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:37:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:37:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:37:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:37:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:37:58,451 INFO L87 Difference]: Start difference. First operand 273 states and 327 transitions. Second operand has 5 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) [2023-04-01 06:37:58,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:37:58,680 INFO L93 Difference]: Finished difference Result 515 states and 624 transitions. [2023-04-01 06:37:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:37:58,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2023-04-01 06:37:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:37:58,684 INFO L225 Difference]: With dead ends: 515 [2023-04-01 06:37:58,684 INFO L226 Difference]: Without dead ends: 372 [2023-04-01 06:37:58,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:37:58,685 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1096 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:37:58,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 290 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:37:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-04-01 06:37:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 326. [2023-04-01 06:37:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.294871794871795) internal successors, (404), 322 states have internal predecessors, (404), 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) [2023-04-01 06:37:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 407 transitions. [2023-04-01 06:37:58,721 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 407 transitions. Word has length 65 [2023-04-01 06:37:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:37:58,723 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 407 transitions. [2023-04-01 06:37:58,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-04-01 06:37:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 407 transitions. [2023-04-01 06:37:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 06:37:58,725 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:37:58,725 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] [2023-04-01 06:37:58,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:37:58,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:37:58,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:37:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1453325668, now seen corresponding path program 1 times [2023-04-01 06:37:58,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:37:58,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953677438] [2023-04-01 06:37:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:37:58,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:37:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:37:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:37:59,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:37:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953677438] [2023-04-01 06:37:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953677438] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:37:59,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:37:59,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:37:59,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237698653] [2023-04-01 06:37:59,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:37:59,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:37:59,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:37:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:37:59,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:37:59,235 INFO L87 Difference]: Start difference. First operand 326 states and 407 transitions. Second operand has 9 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) [2023-04-01 06:37:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:37:59,839 INFO L93 Difference]: Finished difference Result 641 states and 804 transitions. [2023-04-01 06:37:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:37:59,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 [2023-04-01 06:37:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:37:59,843 INFO L225 Difference]: With dead ends: 641 [2023-04-01 06:37:59,843 INFO L226 Difference]: Without dead ends: 531 [2023-04-01 06:37:59,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:37:59,844 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1752 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:37:59,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 836 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:37:59,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2023-04-01 06:37:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 326. [2023-04-01 06:37:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2916666666666667) internal successors, (403), 322 states have internal predecessors, (403), 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) [2023-04-01 06:37:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 406 transitions. [2023-04-01 06:37:59,903 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 406 transitions. Word has length 67 [2023-04-01 06:37:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:37:59,904 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 406 transitions. [2023-04-01 06:37:59,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2023-04-01 06:37:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 406 transitions. [2023-04-01 06:37:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 06:37:59,905 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:37:59,905 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] [2023-04-01 06:37:59,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:37:59,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:37:59,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:37:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1155583748, now seen corresponding path program 1 times [2023-04-01 06:37:59,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:37:59,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870313616] [2023-04-01 06:37:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:37:59,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:37:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:00,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:00,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870313616] [2023-04-01 06:38:00,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870313616] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:00,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:00,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:00,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328547871] [2023-04-01 06:38:00,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:00,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:00,298 INFO L87 Difference]: Start difference. First operand 326 states and 406 transitions. Second operand has 9 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) [2023-04-01 06:38:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:01,059 INFO L93 Difference]: Finished difference Result 748 states and 951 transitions. [2023-04-01 06:38:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:38:01,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 [2023-04-01 06:38:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:01,063 INFO L225 Difference]: With dead ends: 748 [2023-04-01 06:38:01,063 INFO L226 Difference]: Without dead ends: 662 [2023-04-01 06:38:01,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:38:01,065 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1576 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:01,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 962 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:38:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-04-01 06:38:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 326. [2023-04-01 06:38:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2884615384615385) internal successors, (402), 322 states have internal predecessors, (402), 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) [2023-04-01 06:38:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 405 transitions. [2023-04-01 06:38:01,112 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 405 transitions. Word has length 67 [2023-04-01 06:38:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:01,113 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 405 transitions. [2023-04-01 06:38:01,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2023-04-01 06:38:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 405 transitions. [2023-04-01 06:38:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 06:38:01,114 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:01,114 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] [2023-04-01 06:38:01,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:38:01,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:01,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1230937404, now seen corresponding path program 1 times [2023-04-01 06:38:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:01,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025681936] [2023-04-01 06:38:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:01,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:01,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:01,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025681936] [2023-04-01 06:38:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025681936] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:01,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 06:38:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712421282] [2023-04-01 06:38:01,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:01,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 06:38:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:01,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 06:38:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:38:01,592 INFO L87 Difference]: Start difference. First operand 326 states and 405 transitions. Second operand has 8 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) [2023-04-01 06:38:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:01,994 INFO L93 Difference]: Finished difference Result 625 states and 763 transitions. [2023-04-01 06:38:01,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 06:38:01,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 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 [2023-04-01 06:38:01,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:01,997 INFO L225 Difference]: With dead ends: 625 [2023-04-01 06:38:01,997 INFO L226 Difference]: Without dead ends: 466 [2023-04-01 06:38:01,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-01 06:38:01,998 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1733 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:01,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 433 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:38:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-04-01 06:38:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 326. [2023-04-01 06:38:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2852564102564104) internal successors, (401), 322 states have internal predecessors, (401), 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) [2023-04-01 06:38:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 404 transitions. [2023-04-01 06:38:02,042 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 404 transitions. Word has length 67 [2023-04-01 06:38:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:02,042 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 404 transitions. [2023-04-01 06:38:02,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 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) [2023-04-01 06:38:02,042 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 404 transitions. [2023-04-01 06:38:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 06:38:02,043 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:02,043 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] [2023-04-01 06:38:02,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:38:02,044 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:02,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:02,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1598437951, now seen corresponding path program 1 times [2023-04-01 06:38:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:02,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536236348] [2023-04-01 06:38:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:02,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:02,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:02,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536236348] [2023-04-01 06:38:02,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536236348] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:02,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:02,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:02,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220997379] [2023-04-01 06:38:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:02,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:02,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:02,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:02,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:02,403 INFO L87 Difference]: Start difference. First operand 326 states and 404 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 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) [2023-04-01 06:38:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:03,088 INFO L93 Difference]: Finished difference Result 716 states and 900 transitions. [2023-04-01 06:38:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:38:03,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 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 68 [2023-04-01 06:38:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:03,091 INFO L225 Difference]: With dead ends: 716 [2023-04-01 06:38:03,092 INFO L226 Difference]: Without dead ends: 641 [2023-04-01 06:38:03,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:38:03,094 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1621 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:03,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 856 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:38:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-04-01 06:38:03,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 326. [2023-04-01 06:38:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2820512820512822) internal successors, (400), 322 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) [2023-04-01 06:38:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 403 transitions. [2023-04-01 06:38:03,167 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 403 transitions. Word has length 68 [2023-04-01 06:38:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:03,168 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 403 transitions. [2023-04-01 06:38:03,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 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) [2023-04-01 06:38:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 403 transitions. [2023-04-01 06:38:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 06:38:03,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:03,169 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] [2023-04-01 06:38:03,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:38:03,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:03,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:03,169 INFO L85 PathProgramCache]: Analyzing trace with hash 842669225, now seen corresponding path program 1 times [2023-04-01 06:38:03,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:03,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360611147] [2023-04-01 06:38:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:03,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:03,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:03,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360611147] [2023-04-01 06:38:03,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360611147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:03,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086617821] [2023-04-01 06:38:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:03,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:03,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:03,523 INFO L87 Difference]: Start difference. First operand 326 states and 403 transitions. Second operand has 9 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) [2023-04-01 06:38:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:04,247 INFO L93 Difference]: Finished difference Result 647 states and 805 transitions. [2023-04-01 06:38:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:38:04,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 [2023-04-01 06:38:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:04,250 INFO L225 Difference]: With dead ends: 647 [2023-04-01 06:38:04,250 INFO L226 Difference]: Without dead ends: 641 [2023-04-01 06:38:04,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:38:04,251 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1617 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:04,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 881 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:38:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-04-01 06:38:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 326. [2023-04-01 06:38:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2756410256410255) internal successors, (398), 322 states have internal predecessors, (398), 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) [2023-04-01 06:38:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 401 transitions. [2023-04-01 06:38:04,303 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 401 transitions. Word has length 69 [2023-04-01 06:38:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:04,304 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 401 transitions. [2023-04-01 06:38:04,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2023-04-01 06:38:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 401 transitions. [2023-04-01 06:38:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 06:38:04,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:04,305 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] [2023-04-01 06:38:04,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:38:04,305 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:04,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash 973053257, now seen corresponding path program 1 times [2023-04-01 06:38:04,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:04,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459082653] [2023-04-01 06:38:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:04,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:04,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:04,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459082653] [2023-04-01 06:38:04,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459082653] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:04,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:04,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163385268] [2023-04-01 06:38:04,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:04,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:04,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:04,649 INFO L87 Difference]: Start difference. First operand 326 states and 401 transitions. Second operand has 9 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) [2023-04-01 06:38:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:05,357 INFO L93 Difference]: Finished difference Result 681 states and 854 transitions. [2023-04-01 06:38:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:38:05,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 [2023-04-01 06:38:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:05,361 INFO L225 Difference]: With dead ends: 681 [2023-04-01 06:38:05,361 INFO L226 Difference]: Without dead ends: 662 [2023-04-01 06:38:05,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:38:05,362 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1534 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:05,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 999 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:38:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-04-01 06:38:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 326. [2023-04-01 06:38:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2692307692307692) internal successors, (396), 322 states have internal predecessors, (396), 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) [2023-04-01 06:38:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 399 transitions. [2023-04-01 06:38:05,420 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 399 transitions. Word has length 69 [2023-04-01 06:38:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:05,420 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 399 transitions. [2023-04-01 06:38:05,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2023-04-01 06:38:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 399 transitions. [2023-04-01 06:38:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 06:38:05,421 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:05,421 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] [2023-04-01 06:38:05,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:38:05,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:05,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1925442519, now seen corresponding path program 1 times [2023-04-01 06:38:05,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39615800] [2023-04-01 06:38:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:05,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:05,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39615800] [2023-04-01 06:38:05,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39615800] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:05,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:05,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183247854] [2023-04-01 06:38:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:05,735 INFO L87 Difference]: Start difference. First operand 326 states and 399 transitions. Second operand has 9 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) [2023-04-01 06:38:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:06,277 INFO L93 Difference]: Finished difference Result 549 states and 686 transitions. [2023-04-01 06:38:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 06:38:06,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 [2023-04-01 06:38:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:06,280 INFO L225 Difference]: With dead ends: 549 [2023-04-01 06:38:06,280 INFO L226 Difference]: Without dead ends: 406 [2023-04-01 06:38:06,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:38:06,281 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 675 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:06,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 810 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:38:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-04-01 06:38:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 326. [2023-04-01 06:38:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2628205128205128) internal successors, (394), 322 states have internal predecessors, (394), 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) [2023-04-01 06:38:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2023-04-01 06:38:06,340 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 69 [2023-04-01 06:38:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:06,340 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2023-04-01 06:38:06,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2023-04-01 06:38:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2023-04-01 06:38:06,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 06:38:06,341 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:06,341 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] [2023-04-01 06:38:06,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 06:38:06,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:06,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:06,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1609588343, now seen corresponding path program 1 times [2023-04-01 06:38:06,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:06,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170516822] [2023-04-01 06:38:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:06,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:06,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170516822] [2023-04-01 06:38:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170516822] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:06,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:06,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:06,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590099236] [2023-04-01 06:38:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:06,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:06,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:06,665 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand has 9 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) [2023-04-01 06:38:07,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:07,444 INFO L93 Difference]: Finished difference Result 719 states and 896 transitions. [2023-04-01 06:38:07,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:38:07,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 [2023-04-01 06:38:07,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:07,447 INFO L225 Difference]: With dead ends: 719 [2023-04-01 06:38:07,447 INFO L226 Difference]: Without dead ends: 641 [2023-04-01 06:38:07,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:38:07,448 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1525 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:07,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 947 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:38:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-04-01 06:38:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 326. [2023-04-01 06:38:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 312 states have (on average 1.2596153846153846) internal successors, (393), 322 states have internal predecessors, (393), 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) [2023-04-01 06:38:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2023-04-01 06:38:07,519 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 69 [2023-04-01 06:38:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:07,519 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2023-04-01 06:38:07,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2023-04-01 06:38:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2023-04-01 06:38:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 06:38:07,520 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:07,520 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] [2023-04-01 06:38:07,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 06:38:07,520 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:07,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 238367849, now seen corresponding path program 1 times [2023-04-01 06:38:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88333075] [2023-04-01 06:38:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:08,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88333075] [2023-04-01 06:38:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88333075] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:08,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:08,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:38:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614252171] [2023-04-01 06:38:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:08,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:38:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:38:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:38:08,127 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand has 12 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) [2023-04-01 06:38:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:09,865 INFO L93 Difference]: Finished difference Result 1093 states and 1389 transitions. [2023-04-01 06:38:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 06:38:09,866 INFO L78 Accepts]: Start accepts. Automaton has has 12 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 [2023-04-01 06:38:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:09,869 INFO L225 Difference]: With dead ends: 1093 [2023-04-01 06:38:09,870 INFO L226 Difference]: Without dead ends: 1002 [2023-04-01 06:38:09,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 06:38:09,871 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2425 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2425 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:09,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2425 Valid, 1282 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:38:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-04-01 06:38:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 331. [2023-04-01 06:38:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 317 states have (on average 1.2555205047318612) internal successors, (398), 327 states have internal predecessors, (398), 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) [2023-04-01 06:38:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 401 transitions. [2023-04-01 06:38:09,955 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 401 transitions. Word has length 69 [2023-04-01 06:38:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:09,955 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 401 transitions. [2023-04-01 06:38:09,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 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) [2023-04-01 06:38:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 401 transitions. [2023-04-01 06:38:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 06:38:09,956 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:09,956 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] [2023-04-01 06:38:09,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 06:38:09,956 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:09,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1857453417, now seen corresponding path program 1 times [2023-04-01 06:38:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:09,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738095220] [2023-04-01 06:38:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:10,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738095220] [2023-04-01 06:38:10,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738095220] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:10,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:10,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:10,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849059478] [2023-04-01 06:38:10,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:10,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:10,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:10,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:10,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:10,226 INFO L87 Difference]: Start difference. First operand 331 states and 401 transitions. Second operand has 9 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) [2023-04-01 06:38:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:11,001 INFO L93 Difference]: Finished difference Result 652 states and 803 transitions. [2023-04-01 06:38:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:38:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 [2023-04-01 06:38:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:11,003 INFO L225 Difference]: With dead ends: 652 [2023-04-01 06:38:11,004 INFO L226 Difference]: Without dead ends: 646 [2023-04-01 06:38:11,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:38:11,005 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1182 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:11,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 954 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:38:11,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-04-01 06:38:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 331. [2023-04-01 06:38:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 317 states have (on average 1.252365930599369) internal successors, (397), 327 states have internal predecessors, (397), 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) [2023-04-01 06:38:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 400 transitions. [2023-04-01 06:38:11,099 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 400 transitions. Word has length 69 [2023-04-01 06:38:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:11,099 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 400 transitions. [2023-04-01 06:38:11,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2023-04-01 06:38:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 400 transitions. [2023-04-01 06:38:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 06:38:11,100 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:11,100 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] [2023-04-01 06:38:11,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 06:38:11,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:11,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash 914386266, now seen corresponding path program 1 times [2023-04-01 06:38:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:11,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323489592] [2023-04-01 06:38:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:11,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:12,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323489592] [2023-04-01 06:38:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323489592] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:12,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:12,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-01 06:38:12,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107825319] [2023-04-01 06:38:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:12,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 06:38:12,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:12,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 06:38:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2023-04-01 06:38:12,701 INFO L87 Difference]: Start difference. First operand 331 states and 400 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:15,589 INFO L93 Difference]: Finished difference Result 673 states and 815 transitions. [2023-04-01 06:38:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-01 06:38:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 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 [2023-04-01 06:38:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:15,592 INFO L225 Difference]: With dead ends: 673 [2023-04-01 06:38:15,592 INFO L226 Difference]: Without dead ends: 600 [2023-04-01 06:38:15,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=382, Invalid=1970, Unknown=0, NotChecked=0, Total=2352 [2023-04-01 06:38:15,595 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1705 mSDsluCounter, 3910 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:15,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 4267 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 06:38:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-04-01 06:38:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 330. [2023-04-01 06:38:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 316 states have (on average 1.25) internal successors, (395), 326 states have internal predecessors, (395), 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) [2023-04-01 06:38:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 398 transitions. [2023-04-01 06:38:15,700 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 398 transitions. Word has length 70 [2023-04-01 06:38:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:15,700 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 398 transitions. [2023-04-01 06:38:15,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 398 transitions. [2023-04-01 06:38:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 06:38:15,701 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:15,702 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] [2023-04-01 06:38:15,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 06:38:15,702 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:15,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash -832033254, now seen corresponding path program 1 times [2023-04-01 06:38:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:15,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014096764] [2023-04-01 06:38:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:15,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:17,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:17,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014096764] [2023-04-01 06:38:17,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014096764] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:17,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:17,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-01 06:38:17,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765801396] [2023-04-01 06:38:17,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:17,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 06:38:17,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:17,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 06:38:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-04-01 06:38:17,197 INFO L87 Difference]: Start difference. First operand 330 states and 398 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:20,752 INFO L93 Difference]: Finished difference Result 805 states and 994 transitions. [2023-04-01 06:38:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 06:38:20,753 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 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 [2023-04-01 06:38:20,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:20,755 INFO L225 Difference]: With dead ends: 805 [2023-04-01 06:38:20,755 INFO L226 Difference]: Without dead ends: 732 [2023-04-01 06:38:20,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=418, Invalid=2032, Unknown=0, NotChecked=0, Total=2450 [2023-04-01 06:38:20,757 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2237 mSDsluCounter, 7274 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 7771 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:20,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 7771 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3398 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 06:38:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-04-01 06:38:20,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 336. [2023-04-01 06:38:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 322 states have (on average 1.2546583850931676) internal successors, (404), 332 states have internal predecessors, (404), 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) [2023-04-01 06:38:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 407 transitions. [2023-04-01 06:38:20,873 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 407 transitions. Word has length 70 [2023-04-01 06:38:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:20,873 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 407 transitions. [2023-04-01 06:38:20,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 407 transitions. [2023-04-01 06:38:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 06:38:20,874 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:20,875 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] [2023-04-01 06:38:20,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 06:38:20,875 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:20,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1979756902, now seen corresponding path program 1 times [2023-04-01 06:38:20,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:20,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67904024] [2023-04-01 06:38:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:20,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:22,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67904024] [2023-04-01 06:38:22,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67904024] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:22,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:22,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-01 06:38:22,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445773948] [2023-04-01 06:38:22,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:22,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 06:38:22,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:22,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 06:38:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2023-04-01 06:38:22,375 INFO L87 Difference]: Start difference. First operand 336 states and 407 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:25,621 INFO L93 Difference]: Finished difference Result 652 states and 793 transitions. [2023-04-01 06:38:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-01 06:38:25,622 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 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 [2023-04-01 06:38:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:25,624 INFO L225 Difference]: With dead ends: 652 [2023-04-01 06:38:25,624 INFO L226 Difference]: Without dead ends: 579 [2023-04-01 06:38:25,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=503, Invalid=2047, Unknown=0, NotChecked=0, Total=2550 [2023-04-01 06:38:25,625 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 2160 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 4883 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 4883 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2519 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 06:38:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-04-01 06:38:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 343. [2023-04-01 06:38:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 329 states have (on average 1.2522796352583587) internal successors, (412), 339 states have internal predecessors, (412), 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) [2023-04-01 06:38:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 415 transitions. [2023-04-01 06:38:25,747 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 415 transitions. Word has length 70 [2023-04-01 06:38:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:25,747 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 415 transitions. [2023-04-01 06:38:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 415 transitions. [2023-04-01 06:38:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 06:38:25,748 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:25,748 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] [2023-04-01 06:38:25,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 06:38:25,749 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:25,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1991870918, now seen corresponding path program 1 times [2023-04-01 06:38:25,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:25,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673720549] [2023-04-01 06:38:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:26,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:26,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673720549] [2023-04-01 06:38:26,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673720549] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:26,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:26,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-01 06:38:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817237096] [2023-04-01 06:38:26,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:26,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 06:38:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 06:38:26,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-04-01 06:38:26,625 INFO L87 Difference]: Start difference. First operand 343 states and 415 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:28,456 INFO L93 Difference]: Finished difference Result 962 states and 1204 transitions. [2023-04-01 06:38:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 06:38:28,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 1 states have call successors, (2), 1 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 [2023-04-01 06:38:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:28,459 INFO L225 Difference]: With dead ends: 962 [2023-04-01 06:38:28,460 INFO L226 Difference]: Without dead ends: 886 [2023-04-01 06:38:28,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 06:38:28,461 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1421 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:28,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 3775 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:38:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-04-01 06:38:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 343. [2023-04-01 06:38:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 329 states have (on average 1.2462006079027355) internal successors, (410), 339 states have internal predecessors, (410), 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) [2023-04-01 06:38:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 413 transitions. [2023-04-01 06:38:28,581 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 413 transitions. Word has length 70 [2023-04-01 06:38:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:28,581 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 413 transitions. [2023-04-01 06:38:28,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 413 transitions. [2023-04-01 06:38:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 06:38:28,582 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:28,582 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] [2023-04-01 06:38:28,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 06:38:28,583 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:28,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1345143842, now seen corresponding path program 1 times [2023-04-01 06:38:28,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025035183] [2023-04-01 06:38:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:28,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:28,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025035183] [2023-04-01 06:38:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025035183] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:28,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:38:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359003137] [2023-04-01 06:38:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:28,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:38:28,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:38:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:38:28,875 INFO L87 Difference]: Start difference. First operand 343 states and 413 transitions. Second operand has 9 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) [2023-04-01 06:38:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:29,889 INFO L93 Difference]: Finished difference Result 758 states and 945 transitions. [2023-04-01 06:38:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:38:29,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 [2023-04-01 06:38:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:29,894 INFO L225 Difference]: With dead ends: 758 [2023-04-01 06:38:29,894 INFO L226 Difference]: Without dead ends: 667 [2023-04-01 06:38:29,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:38:29,895 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 1253 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:29,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1175 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:38:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-04-01 06:38:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 343. [2023-04-01 06:38:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 329 states have (on average 1.243161094224924) internal successors, (409), 339 states have internal predecessors, (409), 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) [2023-04-01 06:38:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 412 transitions. [2023-04-01 06:38:30,041 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 412 transitions. Word has length 70 [2023-04-01 06:38:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:30,041 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 412 transitions. [2023-04-01 06:38:30,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2023-04-01 06:38:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 412 transitions. [2023-04-01 06:38:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 06:38:30,042 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:30,042 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] [2023-04-01 06:38:30,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 06:38:30,043 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:30,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash -539180530, now seen corresponding path program 1 times [2023-04-01 06:38:30,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419943319] [2023-04-01 06:38:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:30,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:31,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:31,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419943319] [2023-04-01 06:38:31,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419943319] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:31,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:31,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-01 06:38:31,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155321024] [2023-04-01 06:38:31,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:31,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 06:38:31,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 06:38:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-04-01 06:38:31,351 INFO L87 Difference]: Start difference. First operand 343 states and 412 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:33,622 INFO L93 Difference]: Finished difference Result 681 states and 823 transitions. [2023-04-01 06:38:33,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-01 06:38:33,622 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 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 [2023-04-01 06:38:33,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:33,624 INFO L225 Difference]: With dead ends: 681 [2023-04-01 06:38:33,624 INFO L226 Difference]: Without dead ends: 605 [2023-04-01 06:38:33,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 06:38:33,626 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1627 mSDsluCounter, 4487 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 4858 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:33,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 4858 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 06:38:33,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-04-01 06:38:33,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 354. [2023-04-01 06:38:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.25) internal successors, (425), 350 states have internal predecessors, (425), 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) [2023-04-01 06:38:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 428 transitions. [2023-04-01 06:38:33,744 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 428 transitions. Word has length 71 [2023-04-01 06:38:33,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:33,745 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 428 transitions. [2023-04-01 06:38:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 428 transitions. [2023-04-01 06:38:33,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 06:38:33,746 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:33,746 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] [2023-04-01 06:38:33,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 06:38:33,746 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:33,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:33,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1829131630, now seen corresponding path program 1 times [2023-04-01 06:38:33,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:33,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398898041] [2023-04-01 06:38:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:34,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:34,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398898041] [2023-04-01 06:38:34,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398898041] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:34,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:34,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:38:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106045753] [2023-04-01 06:38:34,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:34,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:38:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:38:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:38:34,239 INFO L87 Difference]: Start difference. First operand 354 states and 428 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:35,047 INFO L93 Difference]: Finished difference Result 597 states and 740 transitions. [2023-04-01 06:38:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 06:38:35,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 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 [2023-04-01 06:38:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:35,052 INFO L225 Difference]: With dead ends: 597 [2023-04-01 06:38:35,052 INFO L226 Difference]: Without dead ends: 516 [2023-04-01 06:38:35,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:38:35,057 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1134 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:35,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 2065 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:38:35,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-04-01 06:38:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 310. [2023-04-01 06:38:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 299 states have (on average 1.2441471571906355) internal successors, (372), 306 states have internal predecessors, (372), 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) [2023-04-01 06:38:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 375 transitions. [2023-04-01 06:38:35,219 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 375 transitions. Word has length 71 [2023-04-01 06:38:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:35,220 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 375 transitions. [2023-04-01 06:38:35,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 375 transitions. [2023-04-01 06:38:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 06:38:35,221 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:35,221 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] [2023-04-01 06:38:35,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 06:38:35,221 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:35,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1208477934, now seen corresponding path program 1 times [2023-04-01 06:38:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:35,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127885177] [2023-04-01 06:38:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:38:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:38:36,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:38:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127885177] [2023-04-01 06:38:36,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127885177] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:38:36,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:38:36,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-01 06:38:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455013497] [2023-04-01 06:38:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:38:36,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 06:38:36,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:38:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 06:38:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-04-01 06:38:36,534 INFO L87 Difference]: Start difference. First operand 310 states and 375 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:38:38,937 INFO L93 Difference]: Finished difference Result 636 states and 771 transitions. [2023-04-01 06:38:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-01 06:38:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 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 [2023-04-01 06:38:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:38:38,939 INFO L225 Difference]: With dead ends: 636 [2023-04-01 06:38:38,939 INFO L226 Difference]: Without dead ends: 560 [2023-04-01 06:38:38,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 06:38:38,941 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1647 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:38:38,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 4410 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 06:38:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-04-01 06:38:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 317. [2023-04-01 06:38:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 306 states have (on average 1.2450980392156863) internal successors, (381), 313 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) [2023-04-01 06:38:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 384 transitions. [2023-04-01 06:38:39,112 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 384 transitions. Word has length 71 [2023-04-01 06:38:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:38:39,112 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 384 transitions. [2023-04-01 06:38:39,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:38:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 384 transitions. [2023-04-01 06:38:39,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 06:38:39,113 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:38:39,114 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] [2023-04-01 06:38:39,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-01 06:38:39,114 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-01 06:38:39,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:38:39,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1318617010, now seen corresponding path program 1 times [2023-04-01 06:38:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:38:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812861827] [2023-04-01 06:38:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:38:39,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:38:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat