/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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:16:59,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:16:59,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:16:59,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:16:59,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:16:59,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:16:59,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:16:59,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:16:59,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:16:59,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:16:59,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:16:59,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 03:16:59,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 03:16:59,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 03:16:59,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 03:16:59,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 03:16:59,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 03:16:59,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 03:16:59,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 03:16:59,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 03:16:59,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 03:16:59,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 03:16:59,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 03:16:59,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 03:16:59,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 03:16:59,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 03:16:59,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 03:16:59,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 03:16:59,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 03:16:59,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 03:16:59,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 03:16:59,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 03:16:59,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 03:16:59,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 03:16:59,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 03:16:59,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 03:16:59,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 03:16:59,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 03:16:59,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:16:59,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:16:59,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:16:59,817 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 [2023-04-03 03:16:59,848 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:16:59,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:16:59,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:16:59,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:16:59,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:16:59,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:16:59,850 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:16:59,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:16:59,850 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:16:59,850 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:16:59,850 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:16:59,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:16:59,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:16:59,851 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:16:59,851 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:16:59,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:16:59,851 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:16:59,851 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:16:59,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:16:59,852 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:16:59,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:16:59,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:16:59,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:16:59,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:16:59,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:16:59,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:16:59,853 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:16:59,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:16:59,854 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:16:59,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:16:59,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:16:59,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:16:59,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:16:59,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:16:59,855 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:16:59,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:16:59,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:16:59,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:16:59,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:16:59,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:16:59,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:16:59,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:17:00,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:17:00,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:17:00,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:17:00,108 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:17:00,109 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:17:00,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:17:01,434 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:17:01,864 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:17:01,864 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:17:01,899 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca18dcce/f58c696648604128aa168f31cc3abc33/FLAG9922e3f5e [2023-04-03 03:17:01,915 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aca18dcce/f58c696648604128aa168f31cc3abc33 [2023-04-03 03:17:01,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:17:01,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:17:01,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:17:01,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:17:01,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:17:01,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:17:01" (1/1) ... [2023-04-03 03:17:01,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248cc861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:01, skipping insertion in model container [2023-04-03 03:17:01,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:17:01" (1/1) ... [2023-04-03 03:17:01,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:17:02,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:17:02,652 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2023-04-03 03:17:02,685 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2023-04-03 03:17:02,700 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2023-04-03 03:17:02,706 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2023-04-03 03:17:02,735 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2023-04-03 03:17:02,739 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2023-04-03 03:17:02,744 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2023-04-03 03:17:02,755 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2023-04-03 03:17:02,759 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2023-04-03 03:17:02,764 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2023-04-03 03:17:02,772 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2023-04-03 03:17:02,788 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2023-04-03 03:17:02,792 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2023-04-03 03:17:02,810 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2023-04-03 03:17:02,818 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2023-04-03 03:17:02,831 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2023-04-03 03:17:02,852 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2023-04-03 03:17:02,856 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2023-04-03 03:17:02,861 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2023-04-03 03:17:02,868 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2023-04-03 03:17:02,882 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2023-04-03 03:17:02,903 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2023-04-03 03:17:02,947 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2023-04-03 03:17:02,950 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2023-04-03 03:17:02,955 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2023-04-03 03:17:02,963 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2023-04-03 03:17:02,975 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2023-04-03 03:17:02,993 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2023-04-03 03:17:03,033 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2023-04-03 03:17:03,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:17:03,533 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:17:03,664 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2023-04-03 03:17:03,706 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2023-04-03 03:17:03,724 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2023-04-03 03:17:03,736 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2023-04-03 03:17:03,757 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2023-04-03 03:17:03,769 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2023-04-03 03:17:03,787 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2023-04-03 03:17:03,818 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2023-04-03 03:17:03,831 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2023-04-03 03:17:03,846 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2023-04-03 03:17:03,916 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2023-04-03 03:17:03,939 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2023-04-03 03:17:03,943 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2023-04-03 03:17:03,948 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2023-04-03 03:17:03,959 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2023-04-03 03:17:03,970 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2023-04-03 03:17:03,987 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2023-04-03 03:17:03,990 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2023-04-03 03:17:03,995 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2023-04-03 03:17:04,001 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2023-04-03 03:17:04,013 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2023-04-03 03:17:04,031 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2023-04-03 03:17:04,062 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2023-04-03 03:17:04,065 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2023-04-03 03:17:04,069 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2023-04-03 03:17:04,103 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2023-04-03 03:17:04,113 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2023-04-03 03:17:04,128 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2023-04-03 03:17:04,151 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2023-04-03 03:17:04,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:17:04,569 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:17:04,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04 WrapperNode [2023-04-03 03:17:04,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:17:04,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:17:04,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:17:04,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:17:04,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:17:04,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:17:04,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:17:04,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:17:04,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (1/1) ... [2023-04-03 03:17:04,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:17:04,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:17:04,975 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) [2023-04-03 03:17:04,983 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 [2023-04-03 03:17:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:17:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:17:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:17:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:17:05,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 03:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 03:17:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-03 03:17:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:17:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:17:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:17:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:17:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:17:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:17:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:17:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:17:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:17:05,472 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:17:05,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:17:09,629 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:17:10,062 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:17:10,062 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:17:10,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:17:10 BoogieIcfgContainer [2023-04-03 03:17:10,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:17:10,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:17:10,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:17:10,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:17:10,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:17:01" (1/3) ... [2023-04-03 03:17:10,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657743a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:17:10, skipping insertion in model container [2023-04-03 03:17:10,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:17:04" (2/3) ... [2023-04-03 03:17:10,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657743a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:17:10, skipping insertion in model container [2023-04-03 03:17:10,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:17:10" (3/3) ... [2023-04-03 03:17:10,138 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:17:10,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:17:10,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-04-03 03:17:10,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:17:10,246 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;@20a60fb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:17:10,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-04-03 03:17:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 1994 states, 1959 states have (on average 1.8723838693210821) internal successors, (3668), 1989 states have internal predecessors, (3668), 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) [2023-04-03 03:17:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:17:10,290 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:10,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:10,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:10,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash -927992440, now seen corresponding path program 1 times [2023-04-03 03:17:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:10,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094544368] [2023-04-03 03:17:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:10,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:11,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094544368] [2023-04-03 03:17:11,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094544368] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:11,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:11,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:11,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291090997] [2023-04-03 03:17:11,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:11,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:11,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:11,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:11,262 INFO L87 Difference]: Start difference. First operand has 1994 states, 1959 states have (on average 1.8723838693210821) internal successors, (3668), 1989 states have internal predecessors, (3668), 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 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-04-03 03:17:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:12,752 INFO L93 Difference]: Finished difference Result 2919 states and 5201 transitions. [2023-04-03 03:17:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:12,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 103 [2023-04-03 03:17:12,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:12,775 INFO L225 Difference]: With dead ends: 2919 [2023-04-03 03:17:12,776 INFO L226 Difference]: Without dead ends: 1573 [2023-04-03 03:17:12,784 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 [2023-04-03 03:17:12,793 INFO L413 NwaCegarLoop]: 1722 mSDtfsCounter, 8132 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8132 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:12,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8132 Valid, 1819 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:17:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-04-03 03:17:12,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1573. [2023-04-03 03:17:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1541 states have (on average 1.2900713822193381) internal successors, (1988), 1569 states have internal predecessors, (1988), 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) [2023-04-03 03:17:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1991 transitions. [2023-04-03 03:17:12,899 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1991 transitions. Word has length 103 [2023-04-03 03:17:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:12,899 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 1991 transitions. [2023-04-03 03:17:12,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2023-04-03 03:17:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1991 transitions. [2023-04-03 03:17:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-03 03:17:12,904 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:12,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:12,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:17:12,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:12,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash 634563140, now seen corresponding path program 1 times [2023-04-03 03:17:12,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:12,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177998255] [2023-04-03 03:17:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:12,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:13,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177998255] [2023-04-03 03:17:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177998255] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:13,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423822769] [2023-04-03 03:17:13,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:13,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:13,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:13,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:13,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:13,236 INFO L87 Difference]: Start difference. First operand 1573 states and 1991 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-04-03 03:17:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:14,015 INFO L93 Difference]: Finished difference Result 2485 states and 3258 transitions. [2023-04-03 03:17:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:14,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 104 [2023-04-03 03:17:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:14,021 INFO L225 Difference]: With dead ends: 2485 [2023-04-03 03:17:14,021 INFO L226 Difference]: Without dead ends: 1275 [2023-04-03 03:17:14,023 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 [2023-04-03 03:17:14,024 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 4896 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4896 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:14,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4896 Valid, 934 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:17:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-04-03 03:17:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1275. [2023-04-03 03:17:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1243 states have (on average 1.333065164923572) internal successors, (1657), 1271 states have internal predecessors, (1657), 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) [2023-04-03 03:17:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1660 transitions. [2023-04-03 03:17:14,074 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1660 transitions. Word has length 104 [2023-04-03 03:17:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:14,075 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1660 transitions. [2023-04-03 03:17:14,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-04-03 03:17:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1660 transitions. [2023-04-03 03:17:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-03 03:17:14,078 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:14,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:14,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:17:14,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:14,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash -56010226, now seen corresponding path program 1 times [2023-04-03 03:17:14,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:14,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266846865] [2023-04-03 03:17:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:14,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:14,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:14,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266846865] [2023-04-03 03:17:14,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266846865] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:14,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:14,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114064079] [2023-04-03 03:17:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:14,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:14,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:14,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:14,442 INFO L87 Difference]: Start difference. First operand 1275 states and 1660 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-04-03 03:17:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:15,287 INFO L93 Difference]: Finished difference Result 2187 states and 2926 transitions. [2023-04-03 03:17:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:15,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 105 [2023-04-03 03:17:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:15,292 INFO L225 Difference]: With dead ends: 2187 [2023-04-03 03:17:15,292 INFO L226 Difference]: Without dead ends: 1129 [2023-04-03 03:17:15,295 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 [2023-04-03 03:17:15,296 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 4394 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4394 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:15,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4394 Valid, 834 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:17:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2023-04-03 03:17:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1129. [2023-04-03 03:17:15,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1097 states have (on average 1.3618960802187785) internal successors, (1494), 1125 states have internal predecessors, (1494), 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) [2023-04-03 03:17:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1497 transitions. [2023-04-03 03:17:15,361 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1497 transitions. Word has length 105 [2023-04-03 03:17:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:15,361 INFO L495 AbstractCegarLoop]: Abstraction has 1129 states and 1497 transitions. [2023-04-03 03:17:15,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-04-03 03:17:15,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1497 transitions. [2023-04-03 03:17:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-03 03:17:15,365 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:15,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:15,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:17:15,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:15,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:15,366 INFO L85 PathProgramCache]: Analyzing trace with hash -470248346, now seen corresponding path program 1 times [2023-04-03 03:17:15,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:15,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808776968] [2023-04-03 03:17:15,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:15,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:15,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:15,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808776968] [2023-04-03 03:17:15,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808776968] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:15,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:15,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:15,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263103418] [2023-04-03 03:17:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:15,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:15,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:15,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:15,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:15,655 INFO L87 Difference]: Start difference. First operand 1129 states and 1497 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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) [2023-04-03 03:17:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:16,556 INFO L93 Difference]: Finished difference Result 2041 states and 2762 transitions. [2023-04-03 03:17:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:16,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 106 [2023-04-03 03:17:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:16,588 INFO L225 Difference]: With dead ends: 2041 [2023-04-03 03:17:16,588 INFO L226 Difference]: Without dead ends: 1089 [2023-04-03 03:17:16,589 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 [2023-04-03 03:17:16,590 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 4146 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:16,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 662 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-04-03 03:17:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2023-04-03 03:17:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1057 states have (on average 1.3670766319772942) internal successors, (1445), 1085 states have internal predecessors, (1445), 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) [2023-04-03 03:17:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1448 transitions. [2023-04-03 03:17:16,653 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1448 transitions. Word has length 106 [2023-04-03 03:17:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:16,653 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1448 transitions. [2023-04-03 03:17:16,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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) [2023-04-03 03:17:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1448 transitions. [2023-04-03 03:17:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-03 03:17:16,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:16,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:16,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:17:16,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:16,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1143943596, now seen corresponding path program 1 times [2023-04-03 03:17:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55200906] [2023-04-03 03:17:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:16,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:16,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55200906] [2023-04-03 03:17:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55200906] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:16,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:16,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:16,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261313661] [2023-04-03 03:17:16,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:16,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:16,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:16,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:16,933 INFO L87 Difference]: Start difference. First operand 1089 states and 1448 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-04-03 03:17:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:17,668 INFO L93 Difference]: Finished difference Result 2001 states and 2712 transitions. [2023-04-03 03:17:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 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 107 [2023-04-03 03:17:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:17,673 INFO L225 Difference]: With dead ends: 2001 [2023-04-03 03:17:17,675 INFO L226 Difference]: Without dead ends: 1039 [2023-04-03 03:17:17,679 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 [2023-04-03 03:17:17,681 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 4067 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:17,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4067 Valid, 760 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:17:17,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-04-03 03:17:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2023-04-03 03:17:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1007 states have (on average 1.3803376365441906) internal successors, (1390), 1035 states have internal predecessors, (1390), 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) [2023-04-03 03:17:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1393 transitions. [2023-04-03 03:17:17,746 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1393 transitions. Word has length 107 [2023-04-03 03:17:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:17,747 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1393 transitions. [2023-04-03 03:17:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-04-03 03:17:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1393 transitions. [2023-04-03 03:17:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-03 03:17:17,752 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:17,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:17:17,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:17,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash -824584372, now seen corresponding path program 1 times [2023-04-03 03:17:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:17,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431604154] [2023-04-03 03:17:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:17,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431604154] [2023-04-03 03:17:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431604154] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:17,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:17,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:17,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199897614] [2023-04-03 03:17:17,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:17,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:17,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:17,995 INFO L87 Difference]: Start difference. First operand 1039 states and 1393 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 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) [2023-04-03 03:17:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:18,798 INFO L93 Difference]: Finished difference Result 1951 states and 2656 transitions. [2023-04-03 03:17:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 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 108 [2023-04-03 03:17:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:18,802 INFO L225 Difference]: With dead ends: 1951 [2023-04-03 03:17:18,803 INFO L226 Difference]: Without dead ends: 1017 [2023-04-03 03:17:18,804 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 [2023-04-03 03:17:18,805 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 3973 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3973 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:18,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3973 Valid, 730 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:17:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2023-04-03 03:17:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1017. [2023-04-03 03:17:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 985 states have (on average 1.385786802030457) internal successors, (1365), 1013 states have internal predecessors, (1365), 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) [2023-04-03 03:17:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1368 transitions. [2023-04-03 03:17:18,871 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1368 transitions. Word has length 108 [2023-04-03 03:17:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:18,871 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1368 transitions. [2023-04-03 03:17:18,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 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) [2023-04-03 03:17:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1368 transitions. [2023-04-03 03:17:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 03:17:18,874 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:18,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:18,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:17:18,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:18,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1273501102, now seen corresponding path program 1 times [2023-04-03 03:17:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843480180] [2023-04-03 03:17:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:19,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:19,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843480180] [2023-04-03 03:17:19,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843480180] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:19,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:19,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:17:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71443802] [2023-04-03 03:17:19,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:19,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:17:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:17:19,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:17:19,127 INFO L87 Difference]: Start difference. First operand 1017 states and 1368 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 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) [2023-04-03 03:17:20,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:20,202 INFO L93 Difference]: Finished difference Result 2469 states and 3360 transitions. [2023-04-03 03:17:20,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:17:20,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 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 109 [2023-04-03 03:17:20,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:20,209 INFO L225 Difference]: With dead ends: 2469 [2023-04-03 03:17:20,209 INFO L226 Difference]: Without dead ends: 1534 [2023-04-03 03:17:20,211 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 [2023-04-03 03:17:20,212 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 5335 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5335 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:20,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5335 Valid, 1144 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:17:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-04-03 03:17:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1432. [2023-04-03 03:17:20,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4192857142857143) internal successors, (1987), 1428 states have internal predecessors, (1987), 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) [2023-04-03 03:17:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1990 transitions. [2023-04-03 03:17:20,329 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1990 transitions. Word has length 109 [2023-04-03 03:17:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:20,329 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1990 transitions. [2023-04-03 03:17:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 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) [2023-04-03 03:17:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1990 transitions. [2023-04-03 03:17:20,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-03 03:17:20,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:20,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:20,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:17:20,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:20,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash -813251844, now seen corresponding path program 1 times [2023-04-03 03:17:20,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:20,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061398710] [2023-04-03 03:17:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:20,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:21,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061398710] [2023-04-03 03:17:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061398710] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:21,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:17:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172753122] [2023-04-03 03:17:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:21,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:17:21,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:17:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:17:21,060 INFO L87 Difference]: Start difference. First operand 1432 states and 1990 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 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) [2023-04-03 03:17:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:23,602 INFO L93 Difference]: Finished difference Result 2533 states and 3490 transitions. [2023-04-03 03:17:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:17:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 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 110 [2023-04-03 03:17:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:23,612 INFO L225 Difference]: With dead ends: 2533 [2023-04-03 03:17:23,612 INFO L226 Difference]: Without dead ends: 2385 [2023-04-03 03:17:23,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:17:23,614 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 5731 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 4159 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5731 SdHoareTripleChecker+Valid, 4485 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:23,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5731 Valid, 4485 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4159 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-03 03:17:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2023-04-03 03:17:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1432. [2023-04-03 03:17:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.417857142857143) internal successors, (1985), 1428 states have internal predecessors, (1985), 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) [2023-04-03 03:17:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1988 transitions. [2023-04-03 03:17:23,761 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1988 transitions. Word has length 110 [2023-04-03 03:17:23,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:23,761 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1988 transitions. [2023-04-03 03:17:23,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 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) [2023-04-03 03:17:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1988 transitions. [2023-04-03 03:17:23,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-03 03:17:23,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:23,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:23,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:17:23,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:23,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash -721713355, now seen corresponding path program 1 times [2023-04-03 03:17:23,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952396604] [2023-04-03 03:17:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:23,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:24,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:24,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952396604] [2023-04-03 03:17:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952396604] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:24,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:17:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597489454] [2023-04-03 03:17:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:24,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:17:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:17:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:17:24,464 INFO L87 Difference]: Start difference. First operand 1432 states and 1988 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 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) [2023-04-03 03:17:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:26,634 INFO L93 Difference]: Finished difference Result 2459 states and 3366 transitions. [2023-04-03 03:17:26,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:17:26,635 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 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 110 [2023-04-03 03:17:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:26,643 INFO L225 Difference]: With dead ends: 2459 [2023-04-03 03:17:26,643 INFO L226 Difference]: Without dead ends: 2337 [2023-04-03 03:17:26,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:17:26,647 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 4043 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4043 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:26,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4043 Valid, 3789 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:17:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2023-04-03 03:17:26,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1432. [2023-04-03 03:17:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4164285714285714) internal successors, (1983), 1428 states have internal predecessors, (1983), 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) [2023-04-03 03:17:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1986 transitions. [2023-04-03 03:17:26,807 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1986 transitions. Word has length 110 [2023-04-03 03:17:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:26,807 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1986 transitions. [2023-04-03 03:17:26,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 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) [2023-04-03 03:17:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1986 transitions. [2023-04-03 03:17:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-03 03:17:26,813 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:26,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:26,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:17:26,813 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:26,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash -69611967, now seen corresponding path program 1 times [2023-04-03 03:17:26,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:26,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672090856] [2023-04-03 03:17:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:26,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:27,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:27,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672090856] [2023-04-03 03:17:27,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672090856] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:27,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:27,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:17:27,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782661114] [2023-04-03 03:17:27,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:17:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:17:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:17:27,341 INFO L87 Difference]: Start difference. First operand 1432 states and 1986 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 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) [2023-04-03 03:17:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:28,701 INFO L93 Difference]: Finished difference Result 2406 states and 3197 transitions. [2023-04-03 03:17:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 03:17:28,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 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 110 [2023-04-03 03:17:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:28,708 INFO L225 Difference]: With dead ends: 2406 [2023-04-03 03:17:28,708 INFO L226 Difference]: Without dead ends: 1816 [2023-04-03 03:17:28,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-04-03 03:17:28,711 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 7243 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7243 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:28,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7243 Valid, 1472 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:17:28,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2023-04-03 03:17:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1432. [2023-04-03 03:17:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4157142857142857) internal successors, (1982), 1428 states have internal predecessors, (1982), 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) [2023-04-03 03:17:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1985 transitions. [2023-04-03 03:17:28,899 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1985 transitions. Word has length 110 [2023-04-03 03:17:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:28,899 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1985 transitions. [2023-04-03 03:17:28,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 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) [2023-04-03 03:17:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1985 transitions. [2023-04-03 03:17:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-03 03:17:28,903 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:28,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:28,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:17:28,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr27ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:28,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash -53744971, now seen corresponding path program 1 times [2023-04-03 03:17:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290769960] [2023-04-03 03:17:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:29,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:29,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290769960] [2023-04-03 03:17:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290769960] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:29,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:29,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801816201] [2023-04-03 03:17:29,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:29,497 INFO L87 Difference]: Start difference. First operand 1432 states and 1985 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 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) [2023-04-03 03:17:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:31,126 INFO L93 Difference]: Finished difference Result 1846 states and 2547 transitions. [2023-04-03 03:17:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:31,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 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 110 [2023-04-03 03:17:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:31,132 INFO L225 Difference]: With dead ends: 1846 [2023-04-03 03:17:31,132 INFO L226 Difference]: Without dead ends: 1544 [2023-04-03 03:17:31,133 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 [2023-04-03 03:17:31,134 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 5421 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5421 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:31,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5421 Valid, 3048 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2734 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:17:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-04-03 03:17:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1432. [2023-04-03 03:17:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.415) internal successors, (1981), 1428 states have internal predecessors, (1981), 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) [2023-04-03 03:17:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1984 transitions. [2023-04-03 03:17:31,332 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1984 transitions. Word has length 110 [2023-04-03 03:17:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:31,332 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1984 transitions. [2023-04-03 03:17:31,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 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) [2023-04-03 03:17:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1984 transitions. [2023-04-03 03:17:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-03 03:17:31,337 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:31,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:31,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:17:31,340 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr28ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:31,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:31,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1868098175, now seen corresponding path program 1 times [2023-04-03 03:17:31,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:31,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680721269] [2023-04-03 03:17:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:31,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:31,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:31,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680721269] [2023-04-03 03:17:31,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680721269] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:31,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772547244] [2023-04-03 03:17:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:31,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:31,850 INFO L87 Difference]: Start difference. First operand 1432 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 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) [2023-04-03 03:17:33,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:33,636 INFO L93 Difference]: Finished difference Result 2461 states and 3359 transitions. [2023-04-03 03:17:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:33,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 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 110 [2023-04-03 03:17:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:33,644 INFO L225 Difference]: With dead ends: 2461 [2023-04-03 03:17:33,644 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:17:33,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:33,646 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 5575 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:33,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 3179 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:17:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:17:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:17:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4142857142857144) internal successors, (1980), 1428 states have internal predecessors, (1980), 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) [2023-04-03 03:17:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1983 transitions. [2023-04-03 03:17:33,853 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1983 transitions. Word has length 110 [2023-04-03 03:17:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:33,854 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1983 transitions. [2023-04-03 03:17:33,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 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) [2023-04-03 03:17:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1983 transitions. [2023-04-03 03:17:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:33,857 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:33,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:33,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:17:33,858 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:33,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:33,858 INFO L85 PathProgramCache]: Analyzing trace with hash 41752470, now seen corresponding path program 1 times [2023-04-03 03:17:33,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:33,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939891953] [2023-04-03 03:17:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:33,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:34,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:34,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939891953] [2023-04-03 03:17:34,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939891953] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:34,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385083033] [2023-04-03 03:17:34,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:34,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:34,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:34,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:34,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:34,417 INFO L87 Difference]: Start difference. First operand 1432 states and 1983 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:17:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:36,530 INFO L93 Difference]: Finished difference Result 2733 states and 3770 transitions. [2023-04-03 03:17:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:36,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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 112 [2023-04-03 03:17:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:36,538 INFO L225 Difference]: With dead ends: 2733 [2023-04-03 03:17:36,539 INFO L226 Difference]: Without dead ends: 2429 [2023-04-03 03:17:36,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:36,540 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 4838 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4838 SdHoareTripleChecker+Valid, 4664 SdHoareTripleChecker+Invalid, 4164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:36,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4838 Valid, 4664 Invalid, 4164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:17:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-04-03 03:17:36,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1432. [2023-04-03 03:17:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4128571428571428) internal successors, (1978), 1428 states have internal predecessors, (1978), 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) [2023-04-03 03:17:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1981 transitions. [2023-04-03 03:17:36,751 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1981 transitions. Word has length 112 [2023-04-03 03:17:36,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:36,751 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1981 transitions. [2023-04-03 03:17:36,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:17:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1981 transitions. [2023-04-03 03:17:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:36,754 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:36,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:36,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:17:36,755 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:36,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:36,755 INFO L85 PathProgramCache]: Analyzing trace with hash -861827616, now seen corresponding path program 1 times [2023-04-03 03:17:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:36,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984469302] [2023-04-03 03:17:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:36,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:37,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:37,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984469302] [2023-04-03 03:17:37,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984469302] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:37,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:37,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:37,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631309451] [2023-04-03 03:17:37,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:37,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:37,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:37,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:37,519 INFO L87 Difference]: Start difference. First operand 1432 states and 1981 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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) [2023-04-03 03:17:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:39,878 INFO L93 Difference]: Finished difference Result 2657 states and 3616 transitions. [2023-04-03 03:17:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:17:39,879 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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 112 [2023-04-03 03:17:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:39,886 INFO L225 Difference]: With dead ends: 2657 [2023-04-03 03:17:39,887 INFO L226 Difference]: Without dead ends: 2531 [2023-04-03 03:17:39,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:17:39,888 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 4001 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4001 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 4223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:39,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4001 Valid, 4373 Invalid, 4223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4199 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:17:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2023-04-03 03:17:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1466. [2023-04-03 03:17:40,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1434 states have (on average 1.4156206415620642) internal successors, (2030), 1462 states have internal predecessors, (2030), 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) [2023-04-03 03:17:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2033 transitions. [2023-04-03 03:17:40,123 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2033 transitions. Word has length 112 [2023-04-03 03:17:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:40,123 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 2033 transitions. [2023-04-03 03:17:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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) [2023-04-03 03:17:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2033 transitions. [2023-04-03 03:17:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:40,127 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:40,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:40,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:17:40,127 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:40,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash -511194546, now seen corresponding path program 1 times [2023-04-03 03:17:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:40,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322040706] [2023-04-03 03:17:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:40,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:40,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:40,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322040706] [2023-04-03 03:17:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322040706] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:40,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:40,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150474735] [2023-04-03 03:17:40,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:40,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:40,820 INFO L87 Difference]: Start difference. First operand 1466 states and 2033 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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) [2023-04-03 03:17:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:42,993 INFO L93 Difference]: Finished difference Result 2667 states and 3623 transitions. [2023-04-03 03:17:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:17:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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 112 [2023-04-03 03:17:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:43,001 INFO L225 Difference]: With dead ends: 2667 [2023-04-03 03:17:43,002 INFO L226 Difference]: Without dead ends: 2539 [2023-04-03 03:17:43,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:17:43,003 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 9626 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9626 SdHoareTripleChecker+Valid, 3915 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:43,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9626 Valid, 3915 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 03:17:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2023-04-03 03:17:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 1486. [2023-04-03 03:17:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1454 states have (on average 1.4140302613480056) internal successors, (2056), 1482 states have internal predecessors, (2056), 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) [2023-04-03 03:17:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2059 transitions. [2023-04-03 03:17:43,248 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2059 transitions. Word has length 112 [2023-04-03 03:17:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:43,248 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2059 transitions. [2023-04-03 03:17:43,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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) [2023-04-03 03:17:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2059 transitions. [2023-04-03 03:17:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:43,252 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:43,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:17:43,252 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:43,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1854616238, now seen corresponding path program 1 times [2023-04-03 03:17:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:43,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936853690] [2023-04-03 03:17:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:43,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:43,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936853690] [2023-04-03 03:17:43,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936853690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:43,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:43,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798787185] [2023-04-03 03:17:43,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:43,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:43,952 INFO L87 Difference]: Start difference. First operand 1486 states and 2059 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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) [2023-04-03 03:17:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:46,249 INFO L93 Difference]: Finished difference Result 2777 states and 3796 transitions. [2023-04-03 03:17:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:17:46,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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 112 [2023-04-03 03:17:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:46,255 INFO L225 Difference]: With dead ends: 2777 [2023-04-03 03:17:46,255 INFO L226 Difference]: Without dead ends: 2617 [2023-04-03 03:17:46,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:17:46,257 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 6186 mSDsluCounter, 3655 mSDsCounter, 0 mSdLazyCounter, 3941 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6186 SdHoareTripleChecker+Valid, 4411 SdHoareTripleChecker+Invalid, 3972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:46,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6186 Valid, 4411 Invalid, 3972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3941 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 03:17:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2023-04-03 03:17:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1486. [2023-04-03 03:17:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1454 states have (on average 1.4126547455295735) internal successors, (2054), 1482 states have internal predecessors, (2054), 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) [2023-04-03 03:17:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2057 transitions. [2023-04-03 03:17:46,491 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2057 transitions. Word has length 112 [2023-04-03 03:17:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:46,492 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2057 transitions. [2023-04-03 03:17:46,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 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) [2023-04-03 03:17:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2057 transitions. [2023-04-03 03:17:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:46,495 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:46,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:46,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:17:46,495 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:46,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash -381743801, now seen corresponding path program 1 times [2023-04-03 03:17:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:46,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596004085] [2023-04-03 03:17:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:47,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596004085] [2023-04-03 03:17:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596004085] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:47,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:47,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:17:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798149394] [2023-04-03 03:17:47,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:47,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:17:47,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:47,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:17:47,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:17:47,272 INFO L87 Difference]: Start difference. First operand 1486 states and 2057 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 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) [2023-04-03 03:17:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:49,480 INFO L93 Difference]: Finished difference Result 2198 states and 3021 transitions. [2023-04-03 03:17:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 03:17:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 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 112 [2023-04-03 03:17:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:49,484 INFO L225 Difference]: With dead ends: 2198 [2023-04-03 03:17:49,484 INFO L226 Difference]: Without dead ends: 1618 [2023-04-03 03:17:49,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2023-04-03 03:17:49,486 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 5760 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5760 SdHoareTripleChecker+Valid, 4587 SdHoareTripleChecker+Invalid, 4332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:49,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5760 Valid, 4587 Invalid, 4332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 03:17:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2023-04-03 03:17:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1432. [2023-04-03 03:17:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4114285714285715) internal successors, (1976), 1428 states have internal predecessors, (1976), 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) [2023-04-03 03:17:49,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1979 transitions. [2023-04-03 03:17:49,716 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1979 transitions. Word has length 112 [2023-04-03 03:17:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:49,717 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1979 transitions. [2023-04-03 03:17:49,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 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) [2023-04-03 03:17:49,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1979 transitions. [2023-04-03 03:17:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:49,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:49,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:49,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 03:17:49,720 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr27ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:49,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:49,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1378686088, now seen corresponding path program 1 times [2023-04-03 03:17:49,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:49,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265969203] [2023-04-03 03:17:49,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:49,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:50,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265969203] [2023-04-03 03:17:50,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265969203] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:50,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906315162] [2023-04-03 03:17:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:50,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:50,228 INFO L87 Difference]: Start difference. First operand 1432 states and 1979 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:17:52,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:52,079 INFO L93 Difference]: Finished difference Result 2461 states and 3354 transitions. [2023-04-03 03:17:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:52,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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 112 [2023-04-03 03:17:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:52,083 INFO L225 Difference]: With dead ends: 2461 [2023-04-03 03:17:52,083 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:17:52,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:52,084 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 6202 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 2969 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6202 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:52,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6202 Valid, 3176 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2969 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:17:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:17:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:17:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4107142857142858) internal successors, (1975), 1428 states have internal predecessors, (1975), 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) [2023-04-03 03:17:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1978 transitions. [2023-04-03 03:17:52,287 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1978 transitions. Word has length 112 [2023-04-03 03:17:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:52,288 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1978 transitions. [2023-04-03 03:17:52,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:17:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1978 transitions. [2023-04-03 03:17:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:52,291 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:52,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:52,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 03:17:52,291 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr26ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:52,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash -472457399, now seen corresponding path program 1 times [2023-04-03 03:17:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:52,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176111855] [2023-04-03 03:17:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:52,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:52,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:52,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176111855] [2023-04-03 03:17:52,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176111855] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:52,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:52,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:52,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427953856] [2023-04-03 03:17:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:52,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:52,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:52,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:52,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:52,741 INFO L87 Difference]: Start difference. First operand 1432 states and 1978 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:17:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:54,665 INFO L93 Difference]: Finished difference Result 2522 states and 3455 transitions. [2023-04-03 03:17:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:54,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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 112 [2023-04-03 03:17:54,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:54,674 INFO L225 Difference]: With dead ends: 2522 [2023-04-03 03:17:54,674 INFO L226 Difference]: Without dead ends: 2393 [2023-04-03 03:17:54,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:54,675 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 3632 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:54,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3632 Valid, 3245 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:17:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2023-04-03 03:17:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 1432. [2023-04-03 03:17:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.41) internal successors, (1974), 1428 states have internal predecessors, (1974), 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) [2023-04-03 03:17:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1977 transitions. [2023-04-03 03:17:54,914 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1977 transitions. Word has length 112 [2023-04-03 03:17:54,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:54,914 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1977 transitions. [2023-04-03 03:17:54,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:17:54,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1977 transitions. [2023-04-03 03:17:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:54,917 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:54,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:54,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 03:17:54,918 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr23ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:54,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:54,918 INFO L85 PathProgramCache]: Analyzing trace with hash -121824329, now seen corresponding path program 1 times [2023-04-03 03:17:54,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:54,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117704839] [2023-04-03 03:17:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:54,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:55,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:55,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117704839] [2023-04-03 03:17:55,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117704839] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:55,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:55,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596699484] [2023-04-03 03:17:55,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:55,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:55,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:55,398 INFO L87 Difference]: Start difference. First operand 1432 states and 1977 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:17:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:57,516 INFO L93 Difference]: Finished difference Result 2647 states and 3636 transitions. [2023-04-03 03:17:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:57,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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 112 [2023-04-03 03:17:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:57,524 INFO L225 Difference]: With dead ends: 2647 [2023-04-03 03:17:57,524 INFO L226 Difference]: Without dead ends: 2429 [2023-04-03 03:17:57,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:57,529 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 5702 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5702 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:57,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5702 Valid, 4534 Invalid, 3955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3938 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:17:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-04-03 03:17:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1432. [2023-04-03 03:17:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4092857142857143) internal successors, (1973), 1428 states have internal predecessors, (1973), 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) [2023-04-03 03:17:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1976 transitions. [2023-04-03 03:17:57,767 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1976 transitions. Word has length 112 [2023-04-03 03:17:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:57,768 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1976 transitions. [2023-04-03 03:17:57,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:17:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1976 transitions. [2023-04-03 03:17:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:17:57,770 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:57,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:57,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 03:17:57,771 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:17:57,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:57,771 INFO L85 PathProgramCache]: Analyzing trace with hash 403998734, now seen corresponding path program 1 times [2023-04-03 03:17:57,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:57,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584452196] [2023-04-03 03:17:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:57,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:58,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:58,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584452196] [2023-04-03 03:17:58,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584452196] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:58,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:58,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:58,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547217097] [2023-04-03 03:17:58,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:58,207 INFO L87 Difference]: Start difference. First operand 1432 states and 1976 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:18:00,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:00,078 INFO L93 Difference]: Finished difference Result 2457 states and 3346 transitions. [2023-04-03 03:18:00,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:00,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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 112 [2023-04-03 03:18:00,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:00,082 INFO L225 Difference]: With dead ends: 2457 [2023-04-03 03:18:00,082 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:18:00,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:00,083 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 3658 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3658 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:00,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3658 Valid, 3223 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:18:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:18:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4085714285714286) internal successors, (1972), 1428 states have internal predecessors, (1972), 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) [2023-04-03 03:18:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1975 transitions. [2023-04-03 03:18:00,296 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1975 transitions. Word has length 112 [2023-04-03 03:18:00,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:00,296 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1975 transitions. [2023-04-03 03:18:00,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:18:00,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1975 transitions. [2023-04-03 03:18:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:18:00,299 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:00,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 03:18:00,299 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:00,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash 955866662, now seen corresponding path program 1 times [2023-04-03 03:18:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:00,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318892661] [2023-04-03 03:18:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:00,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:00,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318892661] [2023-04-03 03:18:00,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318892661] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:00,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:00,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:00,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886613230] [2023-04-03 03:18:00,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:00,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:00,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:00,726 INFO L87 Difference]: Start difference. First operand 1432 states and 1975 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:18:02,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:02,596 INFO L93 Difference]: Finished difference Result 2457 states and 3344 transitions. [2023-04-03 03:18:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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 112 [2023-04-03 03:18:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:02,603 INFO L225 Difference]: With dead ends: 2457 [2023-04-03 03:18:02,603 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:18:02,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:02,605 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 5443 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5443 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:02,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5443 Valid, 3260 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3011 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:18:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:18:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:18:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.407857142857143) internal successors, (1971), 1428 states have internal predecessors, (1971), 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) [2023-04-03 03:18:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1974 transitions. [2023-04-03 03:18:02,928 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1974 transitions. Word has length 112 [2023-04-03 03:18:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:02,928 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1974 transitions. [2023-04-03 03:18:02,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:18:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1974 transitions. [2023-04-03 03:18:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:18:02,930 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:02,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:02,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 03:18:02,931 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr28ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:02,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash -58218802, now seen corresponding path program 1 times [2023-04-03 03:18:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:02,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833477882] [2023-04-03 03:18:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:03,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:03,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833477882] [2023-04-03 03:18:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833477882] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:03,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:03,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098796219] [2023-04-03 03:18:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:03,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:03,376 INFO L87 Difference]: Start difference. First operand 1432 states and 1974 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:18:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:05,724 INFO L93 Difference]: Finished difference Result 2624 states and 3607 transitions. [2023-04-03 03:18:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:05,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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 112 [2023-04-03 03:18:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:05,729 INFO L225 Difference]: With dead ends: 2624 [2023-04-03 03:18:05,729 INFO L226 Difference]: Without dead ends: 2429 [2023-04-03 03:18:05,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:05,731 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 4621 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 4461 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 4476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:05,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4621 Valid, 5328 Invalid, 4476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4461 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 03:18:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-04-03 03:18:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1432. [2023-04-03 03:18:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4071428571428573) internal successors, (1970), 1428 states have internal predecessors, (1970), 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) [2023-04-03 03:18:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1973 transitions. [2023-04-03 03:18:05,997 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1973 transitions. Word has length 112 [2023-04-03 03:18:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:05,997 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1973 transitions. [2023-04-03 03:18:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:18:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1973 transitions. [2023-04-03 03:18:05,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 03:18:05,999 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:05,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:05,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 03:18:05,999 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:06,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1884948457, now seen corresponding path program 1 times [2023-04-03 03:18:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:06,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878107965] [2023-04-03 03:18:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:06,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:06,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:06,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878107965] [2023-04-03 03:18:06,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878107965] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:06,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:06,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:06,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477680852] [2023-04-03 03:18:06,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:06,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:06,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:06,419 INFO L87 Difference]: Start difference. First operand 1432 states and 1973 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:18:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:08,324 INFO L93 Difference]: Finished difference Result 2457 states and 3342 transitions. [2023-04-03 03:18:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:08,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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 112 [2023-04-03 03:18:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:08,327 INFO L225 Difference]: With dead ends: 2457 [2023-04-03 03:18:08,327 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:18:08,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:08,329 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 3623 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3623 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:08,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3623 Valid, 3257 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:18:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:18:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4064285714285714) internal successors, (1969), 1428 states have internal predecessors, (1969), 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) [2023-04-03 03:18:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1972 transitions. [2023-04-03 03:18:08,628 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1972 transitions. Word has length 112 [2023-04-03 03:18:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:08,629 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1972 transitions. [2023-04-03 03:18:08,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 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) [2023-04-03 03:18:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1972 transitions. [2023-04-03 03:18:08,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:08,631 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:08,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:08,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 03:18:08,632 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:08,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash 699127679, now seen corresponding path program 1 times [2023-04-03 03:18:08,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:08,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42684895] [2023-04-03 03:18:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:08,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:09,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42684895] [2023-04-03 03:18:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42684895] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:09,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:09,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890329721] [2023-04-03 03:18:09,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:09,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:09,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:09,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:09,084 INFO L87 Difference]: Start difference. First operand 1432 states and 1972 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:11,244 INFO L93 Difference]: Finished difference Result 2613 states and 3586 transitions. [2023-04-03 03:18:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:11,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:11,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:11,248 INFO L225 Difference]: With dead ends: 2613 [2023-04-03 03:18:11,248 INFO L226 Difference]: Without dead ends: 2417 [2023-04-03 03:18:11,249 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 [2023-04-03 03:18:11,250 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 6544 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6544 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:11,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6544 Valid, 4135 Invalid, 3604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:18:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2023-04-03 03:18:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1432. [2023-04-03 03:18:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.405) internal successors, (1967), 1428 states have internal predecessors, (1967), 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) [2023-04-03 03:18:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1970 transitions. [2023-04-03 03:18:11,595 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1970 transitions. Word has length 114 [2023-04-03 03:18:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:11,595 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1970 transitions. [2023-04-03 03:18:11,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1970 transitions. [2023-04-03 03:18:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:11,597 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:11,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:11,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 03:18:11,598 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:11,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:11,598 INFO L85 PathProgramCache]: Analyzing trace with hash 147259751, now seen corresponding path program 1 times [2023-04-03 03:18:11,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:11,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872371156] [2023-04-03 03:18:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:11,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:11,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872371156] [2023-04-03 03:18:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872371156] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865086108] [2023-04-03 03:18:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:11,970 INFO L87 Difference]: Start difference. First operand 1432 states and 1970 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:13,873 INFO L93 Difference]: Finished difference Result 2465 states and 3349 transitions. [2023-04-03 03:18:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:13,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:13,876 INFO L225 Difference]: With dead ends: 2465 [2023-04-03 03:18:13,876 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:18:13,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:13,877 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 5402 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 2995 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5402 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:13,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5402 Valid, 3256 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2995 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:18:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:18:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:18:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4035714285714285) internal successors, (1965), 1428 states have internal predecessors, (1965), 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) [2023-04-03 03:18:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1968 transitions. [2023-04-03 03:18:14,166 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1968 transitions. Word has length 114 [2023-04-03 03:18:14,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:14,166 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1968 transitions. [2023-04-03 03:18:14,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:14,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1968 transitions. [2023-04-03 03:18:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:14,167 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:14,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:14,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 03:18:14,168 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:14,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1239707306, now seen corresponding path program 1 times [2023-04-03 03:18:14,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:14,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826721240] [2023-04-03 03:18:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:14,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:14,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826721240] [2023-04-03 03:18:14,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826721240] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:14,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:14,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:14,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815076780] [2023-04-03 03:18:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:14,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:14,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:14,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:14,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:14,850 INFO L87 Difference]: Start difference. First operand 1432 states and 1968 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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) [2023-04-03 03:18:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:18,653 INFO L93 Difference]: Finished difference Result 3391 states and 4625 transitions. [2023-04-03 03:18:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:18:18,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:18,657 INFO L225 Difference]: With dead ends: 3391 [2023-04-03 03:18:18,657 INFO L226 Difference]: Without dead ends: 3189 [2023-04-03 03:18:18,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:18:18,658 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 10135 mSDsluCounter, 4116 mSDsCounter, 0 mSdLazyCounter, 4846 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10135 SdHoareTripleChecker+Valid, 5217 SdHoareTripleChecker+Invalid, 5196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 4846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:18,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10135 Valid, 5217 Invalid, 5196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 4846 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 03:18:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2023-04-03 03:18:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 1440. [2023-04-03 03:18:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.4012784090909092) internal successors, (1973), 1436 states have internal predecessors, (1973), 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) [2023-04-03 03:18:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1976 transitions. [2023-04-03 03:18:18,997 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1976 transitions. Word has length 114 [2023-04-03 03:18:18,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:18,998 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1976 transitions. [2023-04-03 03:18:18,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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) [2023-04-03 03:18:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1976 transitions. [2023-04-03 03:18:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:18,999 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:18,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:18,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-03 03:18:19,000 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:19,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -551363698, now seen corresponding path program 1 times [2023-04-03 03:18:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:19,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468954558] [2023-04-03 03:18:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:19,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:19,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468954558] [2023-04-03 03:18:19,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468954558] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:19,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:19,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:19,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517409766] [2023-04-03 03:18:19,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:19,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:19,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:19,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:19,409 INFO L87 Difference]: Start difference. First operand 1440 states and 1976 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:21,436 INFO L93 Difference]: Finished difference Result 2479 states and 3360 transitions. [2023-04-03 03:18:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:21,439 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:18:21,439 INFO L226 Difference]: Without dead ends: 2353 [2023-04-03 03:18:21,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:21,440 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 5408 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5408 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:21,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5408 Valid, 3251 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:18:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2023-04-03 03:18:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1440. [2023-04-03 03:18:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.3998579545454546) internal successors, (1971), 1436 states have internal predecessors, (1971), 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) [2023-04-03 03:18:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1974 transitions. [2023-04-03 03:18:21,726 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1974 transitions. Word has length 114 [2023-04-03 03:18:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:21,727 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1974 transitions. [2023-04-03 03:18:21,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1974 transitions. [2023-04-03 03:18:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:21,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:21,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:21,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-03 03:18:21,729 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:21,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash -200730628, now seen corresponding path program 1 times [2023-04-03 03:18:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:21,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365306474] [2023-04-03 03:18:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:22,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:22,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365306474] [2023-04-03 03:18:22,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365306474] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:22,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:22,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437656443] [2023-04-03 03:18:22,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:22,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:22,128 INFO L87 Difference]: Start difference. First operand 1440 states and 1974 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:24,174 INFO L93 Difference]: Finished difference Result 2481 states and 3357 transitions. [2023-04-03 03:18:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:24,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:24,177 INFO L225 Difference]: With dead ends: 2481 [2023-04-03 03:18:24,177 INFO L226 Difference]: Without dead ends: 2353 [2023-04-03 03:18:24,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:24,178 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 5702 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5702 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:24,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5702 Valid, 3191 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2838 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:18:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2023-04-03 03:18:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1440. [2023-04-03 03:18:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.3984375) internal successors, (1969), 1436 states have internal predecessors, (1969), 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) [2023-04-03 03:18:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1972 transitions. [2023-04-03 03:18:24,501 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1972 transitions. Word has length 114 [2023-04-03 03:18:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:24,501 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1972 transitions. [2023-04-03 03:18:24,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1972 transitions. [2023-04-03 03:18:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:24,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:24,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:24,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-03 03:18:24,503 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:24,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2129887140, now seen corresponding path program 1 times [2023-04-03 03:18:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:24,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626759824] [2023-04-03 03:18:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:24,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:24,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626759824] [2023-04-03 03:18:24,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626759824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:24,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:24,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:24,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137956518] [2023-04-03 03:18:24,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:24,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:24,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:24,858 INFO L87 Difference]: Start difference. First operand 1440 states and 1972 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:27,162 INFO L93 Difference]: Finished difference Result 2635 states and 3601 transitions. [2023-04-03 03:18:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:27,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:27,165 INFO L225 Difference]: With dead ends: 2635 [2023-04-03 03:18:27,165 INFO L226 Difference]: Without dead ends: 2417 [2023-04-03 03:18:27,166 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 [2023-04-03 03:18:27,167 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 6556 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 3581 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6556 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:27,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6556 Valid, 4038 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3581 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:18:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2023-04-03 03:18:27,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1440. [2023-04-03 03:18:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.3970170454545454) internal successors, (1967), 1436 states have internal predecessors, (1967), 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) [2023-04-03 03:18:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1970 transitions. [2023-04-03 03:18:27,463 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1970 transitions. Word has length 114 [2023-04-03 03:18:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:27,464 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1970 transitions. [2023-04-03 03:18:27,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1970 transitions. [2023-04-03 03:18:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:27,466 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:27,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-03 03:18:27,467 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:27,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1988522260, now seen corresponding path program 1 times [2023-04-03 03:18:27,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:27,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460033795] [2023-04-03 03:18:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:28,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:28,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460033795] [2023-04-03 03:18:28,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460033795] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:28,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:28,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252830178] [2023-04-03 03:18:28,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:28,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:28,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:28,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:28,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:28,119 INFO L87 Difference]: Start difference. First operand 1440 states and 1970 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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) [2023-04-03 03:18:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:32,247 INFO L93 Difference]: Finished difference Result 3629 states and 4938 transitions. [2023-04-03 03:18:32,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:18:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:32,252 INFO L225 Difference]: With dead ends: 3629 [2023-04-03 03:18:32,252 INFO L226 Difference]: Without dead ends: 3271 [2023-04-03 03:18:32,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:18:32,254 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 9784 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 4942 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9784 SdHoareTripleChecker+Valid, 5359 SdHoareTripleChecker+Invalid, 5271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 4942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:32,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9784 Valid, 5359 Invalid, 5271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 4942 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-03 03:18:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2023-04-03 03:18:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 1448. [2023-04-03 03:18:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.3947740112994351) internal successors, (1975), 1444 states have internal predecessors, (1975), 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) [2023-04-03 03:18:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1978 transitions. [2023-04-03 03:18:32,620 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1978 transitions. Word has length 114 [2023-04-03 03:18:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:32,621 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1978 transitions. [2023-04-03 03:18:32,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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) [2023-04-03 03:18:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1978 transitions. [2023-04-03 03:18:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:32,622 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:32,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:32,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-03 03:18:32,623 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:32,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:32,623 INFO L85 PathProgramCache]: Analyzing trace with hash -746194069, now seen corresponding path program 1 times [2023-04-03 03:18:32,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:32,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689128570] [2023-04-03 03:18:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:32,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:33,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:33,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689128570] [2023-04-03 03:18:33,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689128570] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:33,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:33,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298982781] [2023-04-03 03:18:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:33,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:33,014 INFO L87 Difference]: Start difference. First operand 1448 states and 1978 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:35,444 INFO L93 Difference]: Finished difference Result 2574 states and 3513 transitions. [2023-04-03 03:18:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:35,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:35,446 INFO L225 Difference]: With dead ends: 2574 [2023-04-03 03:18:35,446 INFO L226 Difference]: Without dead ends: 2425 [2023-04-03 03:18:35,447 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 [2023-04-03 03:18:35,447 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 6657 mSDsluCounter, 3048 mSDsCounter, 0 mSdLazyCounter, 3448 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6657 SdHoareTripleChecker+Valid, 3979 SdHoareTripleChecker+Invalid, 3465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:35,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6657 Valid, 3979 Invalid, 3465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3448 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:18:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2023-04-03 03:18:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1448. [2023-04-03 03:18:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.3940677966101696) internal successors, (1974), 1444 states have internal predecessors, (1974), 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) [2023-04-03 03:18:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1977 transitions. [2023-04-03 03:18:35,794 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1977 transitions. Word has length 114 [2023-04-03 03:18:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:35,795 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1977 transitions. [2023-04-03 03:18:35,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1977 transitions. [2023-04-03 03:18:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:35,796 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:35,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:35,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-03 03:18:35,797 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:35,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:35,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1907417334, now seen corresponding path program 1 times [2023-04-03 03:18:35,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:35,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652906981] [2023-04-03 03:18:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:36,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652906981] [2023-04-03 03:18:36,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652906981] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:36,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:36,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769281938] [2023-04-03 03:18:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:36,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:36,193 INFO L87 Difference]: Start difference. First operand 1448 states and 1977 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:38,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:38,547 INFO L93 Difference]: Finished difference Result 2528 states and 3437 transitions. [2023-04-03 03:18:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:38,550 INFO L225 Difference]: With dead ends: 2528 [2023-04-03 03:18:38,550 INFO L226 Difference]: Without dead ends: 2409 [2023-04-03 03:18:38,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:18:38,551 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 6861 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6861 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:38,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6861 Valid, 3730 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3290 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:18:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2023-04-03 03:18:38,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 1448. [2023-04-03 03:18:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.393361581920904) internal successors, (1973), 1444 states have internal predecessors, (1973), 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) [2023-04-03 03:18:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1976 transitions. [2023-04-03 03:18:38,934 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1976 transitions. Word has length 114 [2023-04-03 03:18:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:38,934 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1976 transitions. [2023-04-03 03:18:38,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1976 transitions. [2023-04-03 03:18:38,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:38,935 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:38,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:38,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-03 03:18:38,936 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr23ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:38,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:38,936 INFO L85 PathProgramCache]: Analyzing trace with hash 725845532, now seen corresponding path program 1 times [2023-04-03 03:18:38,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:38,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592209835] [2023-04-03 03:18:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:38,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:39,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:39,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592209835] [2023-04-03 03:18:39,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592209835] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:39,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:39,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397298772] [2023-04-03 03:18:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:39,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:39,229 INFO L87 Difference]: Start difference. First operand 1448 states and 1976 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:41,671 INFO L93 Difference]: Finished difference Result 2593 states and 3533 transitions. [2023-04-03 03:18:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:41,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:41,673 INFO L225 Difference]: With dead ends: 2593 [2023-04-03 03:18:41,673 INFO L226 Difference]: Without dead ends: 2425 [2023-04-03 03:18:41,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:41,674 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 4812 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4812 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:41,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4812 Valid, 4053 Invalid, 3645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3629 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:18:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2023-04-03 03:18:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1448. [2023-04-03 03:18:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.3926553672316384) internal successors, (1972), 1444 states have internal predecessors, (1972), 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) [2023-04-03 03:18:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1975 transitions. [2023-04-03 03:18:42,054 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1975 transitions. Word has length 114 [2023-04-03 03:18:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:42,055 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1975 transitions. [2023-04-03 03:18:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1975 transitions. [2023-04-03 03:18:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:42,057 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:42,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:42,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-03 03:18:42,057 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr28ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:42,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1349642538, now seen corresponding path program 1 times [2023-04-03 03:18:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:42,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094489706] [2023-04-03 03:18:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:42,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:42,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094489706] [2023-04-03 03:18:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094489706] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:42,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:42,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165083068] [2023-04-03 03:18:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:42,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:42,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:42,589 INFO L87 Difference]: Start difference. First operand 1448 states and 1975 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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) [2023-04-03 03:18:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:46,723 INFO L93 Difference]: Finished difference Result 3286 states and 4467 transitions. [2023-04-03 03:18:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:18:46,724 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:46,727 INFO L225 Difference]: With dead ends: 3286 [2023-04-03 03:18:46,727 INFO L226 Difference]: Without dead ends: 3133 [2023-04-03 03:18:46,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:18:46,728 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 10433 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 4364 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10433 SdHoareTripleChecker+Valid, 4677 SdHoareTripleChecker+Invalid, 4734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 4364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:46,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10433 Valid, 4677 Invalid, 4734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 4364 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-03 03:18:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2023-04-03 03:18:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 1452. [2023-04-03 03:18:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1420 states have (on average 1.3915492957746478) internal successors, (1976), 1448 states have internal predecessors, (1976), 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) [2023-04-03 03:18:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1979 transitions. [2023-04-03 03:18:47,125 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1979 transitions. Word has length 114 [2023-04-03 03:18:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:47,125 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1979 transitions. [2023-04-03 03:18:47,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 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) [2023-04-03 03:18:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1979 transitions. [2023-04-03 03:18:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:47,127 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:47,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:47,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-03 03:18:47,127 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:47,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash -157641435, now seen corresponding path program 1 times [2023-04-03 03:18:47,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:47,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526878949] [2023-04-03 03:18:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:47,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:47,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526878949] [2023-04-03 03:18:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526878949] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:47,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:47,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:47,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045599468] [2023-04-03 03:18:47,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:47,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:47,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:47,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:47,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:47,457 INFO L87 Difference]: Start difference. First operand 1452 states and 1979 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:49,920 INFO L93 Difference]: Finished difference Result 2530 states and 3437 transitions. [2023-04-03 03:18:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:49,923 INFO L225 Difference]: With dead ends: 2530 [2023-04-03 03:18:49,924 INFO L226 Difference]: Without dead ends: 2413 [2023-04-03 03:18:49,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:18:49,925 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 6617 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 3397 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6617 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:49,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6617 Valid, 3911 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3397 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:18:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2023-04-03 03:18:50,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1452. [2023-04-03 03:18:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1420 states have (on average 1.3908450704225352) internal successors, (1975), 1448 states have internal predecessors, (1975), 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) [2023-04-03 03:18:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1978 transitions. [2023-04-03 03:18:50,325 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1978 transitions. Word has length 114 [2023-04-03 03:18:50,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:50,325 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1978 transitions. [2023-04-03 03:18:50,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1978 transitions. [2023-04-03 03:18:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-03 03:18:50,327 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:50,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-03 03:18:50,327 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:50,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash -57147381, now seen corresponding path program 1 times [2023-04-03 03:18:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549134559] [2023-04-03 03:18:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:50,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:50,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549134559] [2023-04-03 03:18:50,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549134559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:50,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:50,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546102288] [2023-04-03 03:18:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:50,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:50,703 INFO L87 Difference]: Start difference. First operand 1452 states and 1978 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:53,196 INFO L93 Difference]: Finished difference Result 2566 states and 3499 transitions. [2023-04-03 03:18:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 114 [2023-04-03 03:18:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:53,198 INFO L225 Difference]: With dead ends: 2566 [2023-04-03 03:18:53,199 INFO L226 Difference]: Without dead ends: 2425 [2023-04-03 03:18:53,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:18:53,199 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 6756 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 3415 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6756 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:53,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6756 Valid, 3881 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3415 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:18:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2023-04-03 03:18:53,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1452. [2023-04-03 03:18:53,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1420 states have (on average 1.3901408450704225) internal successors, (1974), 1448 states have internal predecessors, (1974), 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) [2023-04-03 03:18:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1977 transitions. [2023-04-03 03:18:53,606 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1977 transitions. Word has length 114 [2023-04-03 03:18:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:53,607 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1977 transitions. [2023-04-03 03:18:53,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-04-03 03:18:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1977 transitions. [2023-04-03 03:18:53,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:18:53,608 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:53,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:53,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-03 03:18:53,609 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:53,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1271660372, now seen corresponding path program 1 times [2023-04-03 03:18:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:53,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524217200] [2023-04-03 03:18:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:53,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:53,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:53,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524217200] [2023-04-03 03:18:53,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524217200] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:53,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:53,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:53,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920594795] [2023-04-03 03:18:53,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:53,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:53,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:53,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:53,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:53,923 INFO L87 Difference]: Start difference. First operand 1452 states and 1977 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:18:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:56,317 INFO L93 Difference]: Finished difference Result 2573 states and 3491 transitions. [2023-04-03 03:18:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:56,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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 115 [2023-04-03 03:18:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:56,319 INFO L225 Difference]: With dead ends: 2573 [2023-04-03 03:18:56,319 INFO L226 Difference]: Without dead ends: 2413 [2023-04-03 03:18:56,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:56,320 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 3360 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 3365 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:56,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3360 Valid, 3924 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3365 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:18:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2023-04-03 03:18:56,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1452. [2023-04-03 03:18:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1420 states have (on average 1.388732394366197) internal successors, (1972), 1448 states have internal predecessors, (1972), 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) [2023-04-03 03:18:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1975 transitions. [2023-04-03 03:18:56,737 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1975 transitions. Word has length 115 [2023-04-03 03:18:56,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:56,737 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1975 transitions. [2023-04-03 03:18:56,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:18:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1975 transitions. [2023-04-03 03:18:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:18:56,740 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:56,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:56,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-03 03:18:56,740 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:18:56,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash -964699667, now seen corresponding path program 1 times [2023-04-03 03:18:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993041612] [2023-04-03 03:18:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:56,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:57,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:57,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993041612] [2023-04-03 03:18:57,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993041612] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:57,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:57,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:57,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381268429] [2023-04-03 03:18:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:57,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:57,042 INFO L87 Difference]: Start difference. First operand 1452 states and 1975 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:18:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:59,599 INFO L93 Difference]: Finished difference Result 2799 states and 3802 transitions. [2023-04-03 03:18:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:59,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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 115 [2023-04-03 03:18:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:59,601 INFO L225 Difference]: With dead ends: 2799 [2023-04-03 03:18:59,601 INFO L226 Difference]: Without dead ends: 2441 [2023-04-03 03:18:59,602 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 [2023-04-03 03:18:59,602 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 5837 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 3795 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5837 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:59,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5837 Valid, 4415 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3795 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:18:59,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2023-04-03 03:19:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 1444. [2023-04-03 03:19:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1412 states have (on average 1.3895184135977336) internal successors, (1962), 1440 states have internal predecessors, (1962), 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) [2023-04-03 03:19:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1965 transitions. [2023-04-03 03:19:00,034 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1965 transitions. Word has length 115 [2023-04-03 03:19:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:00,034 INFO L495 AbstractCegarLoop]: Abstraction has 1444 states and 1965 transitions. [2023-04-03 03:19:00,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:19:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1965 transitions. [2023-04-03 03:19:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:00,036 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:00,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:00,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-03 03:19:00,036 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:00,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2105253693, now seen corresponding path program 1 times [2023-04-03 03:19:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035560027] [2023-04-03 03:19:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:00,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:00,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035560027] [2023-04-03 03:19:00,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035560027] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:00,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:00,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962217214] [2023-04-03 03:19:00,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:00,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:00,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:00,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:00,337 INFO L87 Difference]: Start difference. First operand 1444 states and 1965 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:19:03,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:03,011 INFO L93 Difference]: Finished difference Result 2619 states and 3563 transitions. [2023-04-03 03:19:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:03,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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 115 [2023-04-03 03:19:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:03,014 INFO L225 Difference]: With dead ends: 2619 [2023-04-03 03:19:03,014 INFO L226 Difference]: Without dead ends: 2417 [2023-04-03 03:19:03,014 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 [2023-04-03 03:19:03,015 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 4459 mSDsluCounter, 3383 mSDsCounter, 0 mSdLazyCounter, 3824 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:03,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4459 Valid, 4488 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3824 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:19:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2023-04-03 03:19:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1436. [2023-04-03 03:19:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1404 states have (on average 1.3903133903133904) internal successors, (1952), 1432 states have internal predecessors, (1952), 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) [2023-04-03 03:19:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1955 transitions. [2023-04-03 03:19:03,440 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1955 transitions. Word has length 115 [2023-04-03 03:19:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:03,440 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 1955 transitions. [2023-04-03 03:19:03,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:19:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1955 transitions. [2023-04-03 03:19:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:03,442 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:03,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:03,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-03 03:19:03,442 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:03,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash 169007022, now seen corresponding path program 1 times [2023-04-03 03:19:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:03,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344794382] [2023-04-03 03:19:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:03,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:03,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:03,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344794382] [2023-04-03 03:19:03,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344794382] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:03,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:03,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:03,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865323581] [2023-04-03 03:19:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:03,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:03,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:03,864 INFO L87 Difference]: Start difference. First operand 1436 states and 1955 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:19:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:06,323 INFO L93 Difference]: Finished difference Result 2455 states and 3308 transitions. [2023-04-03 03:19:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:06,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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 115 [2023-04-03 03:19:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:06,325 INFO L225 Difference]: With dead ends: 2455 [2023-04-03 03:19:06,325 INFO L226 Difference]: Without dead ends: 2349 [2023-04-03 03:19:06,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:06,326 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 5160 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5160 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:06,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5160 Valid, 3430 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2023-04-03 03:19:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1436. [2023-04-03 03:19:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1404 states have (on average 1.3896011396011396) internal successors, (1951), 1432 states have internal predecessors, (1951), 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) [2023-04-03 03:19:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1954 transitions. [2023-04-03 03:19:06,768 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1954 transitions. Word has length 115 [2023-04-03 03:19:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:06,769 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 1954 transitions. [2023-04-03 03:19:06,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:19:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1954 transitions. [2023-04-03 03:19:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:19:06,770 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:06,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:06,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-03 03:19:06,771 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr28ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:06,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1017864218, now seen corresponding path program 1 times [2023-04-03 03:19:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:06,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722239008] [2023-04-03 03:19:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:07,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:07,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722239008] [2023-04-03 03:19:07,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722239008] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:07,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:07,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:07,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341357538] [2023-04-03 03:19:07,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:07,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:07,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:07,097 INFO L87 Difference]: Start difference. First operand 1436 states and 1954 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:19:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:09,831 INFO L93 Difference]: Finished difference Result 2570 states and 3494 transitions. [2023-04-03 03:19:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:09,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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 115 [2023-04-03 03:19:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:09,834 INFO L225 Difference]: With dead ends: 2570 [2023-04-03 03:19:09,834 INFO L226 Difference]: Without dead ends: 2417 [2023-04-03 03:19:09,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:09,835 INFO L413 NwaCegarLoop]: 1140 mSDtfsCounter, 4253 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 3979 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 4668 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:09,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 4668 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3979 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:19:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2023-04-03 03:19:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1432. [2023-04-03 03:19:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.39) internal successors, (1946), 1428 states have internal predecessors, (1946), 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) [2023-04-03 03:19:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1949 transitions. [2023-04-03 03:19:10,285 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1949 transitions. Word has length 115 [2023-04-03 03:19:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:10,285 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1949 transitions. [2023-04-03 03:19:10,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 states have internal predecessors, (112), 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) [2023-04-03 03:19:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1949 transitions. [2023-04-03 03:19:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:10,286 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:10,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:10,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-04-03 03:19:10,287 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:10,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash 368588922, now seen corresponding path program 1 times [2023-04-03 03:19:10,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:10,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334871384] [2023-04-03 03:19:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:10,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:10,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:10,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334871384] [2023-04-03 03:19:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334871384] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:10,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:10,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944546195] [2023-04-03 03:19:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:10,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:10,662 INFO L87 Difference]: Start difference. First operand 1432 states and 1949 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:13,272 INFO L93 Difference]: Finished difference Result 2461 states and 3318 transitions. [2023-04-03 03:19:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:13,275 INFO L225 Difference]: With dead ends: 2461 [2023-04-03 03:19:13,275 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:19:13,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:13,276 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 6947 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6947 SdHoareTripleChecker+Valid, 3447 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:13,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6947 Valid, 3447 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3093 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:19:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:19:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.3885714285714286) internal successors, (1944), 1428 states have internal predecessors, (1944), 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) [2023-04-03 03:19:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1947 transitions. [2023-04-03 03:19:13,743 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1947 transitions. Word has length 116 [2023-04-03 03:19:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:13,744 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1947 transitions. [2023-04-03 03:19:13,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:13,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1947 transitions. [2023-04-03 03:19:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:13,746 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:13,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:13,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-04-03 03:19:13,746 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:13,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:13,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1137987688, now seen corresponding path program 1 times [2023-04-03 03:19:13,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:13,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074703496] [2023-04-03 03:19:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:13,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:14,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:14,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074703496] [2023-04-03 03:19:14,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074703496] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:14,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:14,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:14,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656119039] [2023-04-03 03:19:14,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:14,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:14,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:14,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:14,138 INFO L87 Difference]: Start difference. First operand 1432 states and 1947 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:16,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:16,948 INFO L93 Difference]: Finished difference Result 2535 states and 3440 transitions. [2023-04-03 03:19:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:16,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:16,951 INFO L225 Difference]: With dead ends: 2535 [2023-04-03 03:19:16,951 INFO L226 Difference]: Without dead ends: 2393 [2023-04-03 03:19:16,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:16,952 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 5855 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 3854 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5855 SdHoareTripleChecker+Valid, 4407 SdHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:16,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5855 Valid, 4407 Invalid, 3870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3854 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:19:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2023-04-03 03:19:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 1432. [2023-04-03 03:19:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.3871428571428572) internal successors, (1942), 1428 states have internal predecessors, (1942), 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) [2023-04-03 03:19:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1945 transitions. [2023-04-03 03:19:17,448 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1945 transitions. Word has length 116 [2023-04-03 03:19:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:17,449 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1945 transitions. [2023-04-03 03:19:17,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:17,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1945 transitions. [2023-04-03 03:19:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:17,454 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:17,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:17,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-04-03 03:19:17,455 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:17,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1517668701, now seen corresponding path program 1 times [2023-04-03 03:19:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:17,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337814509] [2023-04-03 03:19:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:17,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:17,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337814509] [2023-04-03 03:19:17,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337814509] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:17,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:17,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:17,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194315109] [2023-04-03 03:19:17,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:17,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:17,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:17,762 INFO L87 Difference]: Start difference. First operand 1432 states and 1945 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:20,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:20,329 INFO L93 Difference]: Finished difference Result 2465 states and 3318 transitions. [2023-04-03 03:19:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:20,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:20,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:20,332 INFO L225 Difference]: With dead ends: 2465 [2023-04-03 03:19:20,332 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:19:20,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:20,333 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 6796 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6796 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:20,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6796 Valid, 3495 Invalid, 3150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:19:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:19:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.3857142857142857) internal successors, (1940), 1428 states have internal predecessors, (1940), 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) [2023-04-03 03:19:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1943 transitions. [2023-04-03 03:19:20,808 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1943 transitions. Word has length 116 [2023-04-03 03:19:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:20,808 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1943 transitions. [2023-04-03 03:19:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1943 transitions. [2023-04-03 03:19:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:20,810 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:20,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:20,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-04-03 03:19:20,810 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:20,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash 410855529, now seen corresponding path program 1 times [2023-04-03 03:19:20,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:20,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516490831] [2023-04-03 03:19:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:21,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:21,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516490831] [2023-04-03 03:19:21,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516490831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:21,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:21,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815955440] [2023-04-03 03:19:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:21,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:21,160 INFO L87 Difference]: Start difference. First operand 1432 states and 1943 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:23,727 INFO L93 Difference]: Finished difference Result 2467 states and 3317 transitions. [2023-04-03 03:19:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:23,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:23,730 INFO L225 Difference]: With dead ends: 2467 [2023-04-03 03:19:23,730 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:19:23,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:23,731 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 5037 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5037 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:23,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5037 Valid, 3545 Invalid, 3219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:19:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:19:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.3842857142857143) internal successors, (1938), 1428 states have internal predecessors, (1938), 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) [2023-04-03 03:19:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1941 transitions. [2023-04-03 03:19:24,258 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1941 transitions. Word has length 116 [2023-04-03 03:19:24,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:24,258 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1941 transitions. [2023-04-03 03:19:24,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1941 transitions. [2023-04-03 03:19:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:24,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:24,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:24,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-04-03 03:19:24,260 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:24,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash -96231795, now seen corresponding path program 1 times [2023-04-03 03:19:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:24,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737421543] [2023-04-03 03:19:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:24,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:24,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737421543] [2023-04-03 03:19:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737421543] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:24,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939294640] [2023-04-03 03:19:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:24,639 INFO L87 Difference]: Start difference. First operand 1432 states and 1941 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:27,476 INFO L93 Difference]: Finished difference Result 2541 states and 3435 transitions. [2023-04-03 03:19:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:27,479 INFO L225 Difference]: With dead ends: 2541 [2023-04-03 03:19:27,479 INFO L226 Difference]: Without dead ends: 2393 [2023-04-03 03:19:27,479 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 [2023-04-03 03:19:27,479 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 6105 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6105 SdHoareTripleChecker+Valid, 4258 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:27,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6105 Valid, 4258 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3616 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 03:19:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2023-04-03 03:19:27,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 1432. [2023-04-03 03:19:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.3828571428571428) internal successors, (1936), 1428 states have internal predecessors, (1936), 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) [2023-04-03 03:19:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1939 transitions. [2023-04-03 03:19:27,953 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1939 transitions. Word has length 116 [2023-04-03 03:19:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:27,953 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1939 transitions. [2023-04-03 03:19:27,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1939 transitions. [2023-04-03 03:19:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:27,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:27,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:27,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-04-03 03:19:27,955 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:27,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash -353732348, now seen corresponding path program 1 times [2023-04-03 03:19:27,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:27,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421096959] [2023-04-03 03:19:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:28,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421096959] [2023-04-03 03:19:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421096959] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:28,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:28,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:28,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369959486] [2023-04-03 03:19:28,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:28,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:28,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:28,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:28,276 INFO L87 Difference]: Start difference. First operand 1432 states and 1939 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:30,894 INFO L93 Difference]: Finished difference Result 2465 states and 3310 transitions. [2023-04-03 03:19:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:30,897 INFO L225 Difference]: With dead ends: 2465 [2023-04-03 03:19:30,897 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:19:30,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:30,898 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 3392 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 3176 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3392 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:30,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3392 Valid, 3565 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:19:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:19:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.3814285714285715) internal successors, (1934), 1428 states have internal predecessors, (1934), 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) [2023-04-03 03:19:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1937 transitions. [2023-04-03 03:19:31,372 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1937 transitions. Word has length 116 [2023-04-03 03:19:31,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:31,372 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1937 transitions. [2023-04-03 03:19:31,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1937 transitions. [2023-04-03 03:19:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:31,374 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:31,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:31,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-04-03 03:19:31,375 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:31,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1348519866, now seen corresponding path program 1 times [2023-04-03 03:19:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718080618] [2023-04-03 03:19:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:31,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718080618] [2023-04-03 03:19:31,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718080618] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:31,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:31,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:31,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702751265] [2023-04-03 03:19:31,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:31,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:31,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:31,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:31,748 INFO L87 Difference]: Start difference. First operand 1432 states and 1937 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:34,510 INFO L93 Difference]: Finished difference Result 2541 states and 3428 transitions. [2023-04-03 03:19:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:34,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:34,512 INFO L225 Difference]: With dead ends: 2541 [2023-04-03 03:19:34,513 INFO L226 Difference]: Without dead ends: 2393 [2023-04-03 03:19:34,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:34,513 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 4401 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 3857 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 3873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:34,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4401 Valid, 4388 Invalid, 3873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3857 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:19:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2023-04-03 03:19:35,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 1432. [2023-04-03 03:19:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.38) internal successors, (1932), 1428 states have internal predecessors, (1932), 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) [2023-04-03 03:19:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1935 transitions. [2023-04-03 03:19:35,013 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1935 transitions. Word has length 116 [2023-04-03 03:19:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:35,013 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1935 transitions. [2023-04-03 03:19:35,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1935 transitions. [2023-04-03 03:19:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:35,015 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:35,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:35,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-04-03 03:19:35,015 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:35,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1211380304, now seen corresponding path program 1 times [2023-04-03 03:19:35,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:35,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384414317] [2023-04-03 03:19:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:35,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:35,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:35,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384414317] [2023-04-03 03:19:35,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384414317] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:35,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:35,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:35,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390538544] [2023-04-03 03:19:35,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:35,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:35,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:35,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:35,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:35,374 INFO L87 Difference]: Start difference. First operand 1432 states and 1935 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:38,126 INFO L93 Difference]: Finished difference Result 2467 states and 3307 transitions. [2023-04-03 03:19:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:38,129 INFO L225 Difference]: With dead ends: 2467 [2023-04-03 03:19:38,129 INFO L226 Difference]: Without dead ends: 2345 [2023-04-03 03:19:38,129 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 [2023-04-03 03:19:38,130 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 6627 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6627 SdHoareTripleChecker+Valid, 3659 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:38,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6627 Valid, 3659 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-03 03:19:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-03 03:19:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.3785714285714286) internal successors, (1930), 1428 states have internal predecessors, (1930), 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) [2023-04-03 03:19:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1933 transitions. [2023-04-03 03:19:38,638 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1933 transitions. Word has length 116 [2023-04-03 03:19:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:38,639 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1933 transitions. [2023-04-03 03:19:38,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1933 transitions. [2023-04-03 03:19:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:38,640 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:38,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:38,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-04-03 03:19:38,640 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:38,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2086797060, now seen corresponding path program 1 times [2023-04-03 03:19:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626084422] [2023-04-03 03:19:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:39,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626084422] [2023-04-03 03:19:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626084422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:39,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:39,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:19:39,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135823948] [2023-04-03 03:19:39,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:39,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:19:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:19:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:19:39,158 INFO L87 Difference]: Start difference. First operand 1432 states and 1933 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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) [2023-04-03 03:19:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:44,321 INFO L93 Difference]: Finished difference Result 3235 states and 4354 transitions. [2023-04-03 03:19:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:19:44,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:44,325 INFO L225 Difference]: With dead ends: 3235 [2023-04-03 03:19:44,325 INFO L226 Difference]: Without dead ends: 3075 [2023-04-03 03:19:44,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:19:44,326 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 8327 mSDsluCounter, 4666 mSDsCounter, 0 mSdLazyCounter, 5096 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8327 SdHoareTripleChecker+Valid, 5750 SdHoareTripleChecker+Invalid, 5431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 5096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:44,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8327 Valid, 5750 Invalid, 5431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 5096 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 03:19:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2023-04-03 03:19:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 1440. [2023-04-03 03:19:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.3764204545454546) internal successors, (1938), 1436 states have internal predecessors, (1938), 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) [2023-04-03 03:19:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1941 transitions. [2023-04-03 03:19:44,882 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1941 transitions. Word has length 116 [2023-04-03 03:19:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:44,882 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1941 transitions. [2023-04-03 03:19:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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) [2023-04-03 03:19:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1941 transitions. [2023-04-03 03:19:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:44,884 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:44,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:44,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-04-03 03:19:44,884 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:44,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash -28189803, now seen corresponding path program 1 times [2023-04-03 03:19:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:44,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643227623] [2023-04-03 03:19:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:44,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:45,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:45,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643227623] [2023-04-03 03:19:45,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643227623] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:45,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:45,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:45,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487848995] [2023-04-03 03:19:45,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:45,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:45,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:45,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:45,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:45,181 INFO L87 Difference]: Start difference. First operand 1440 states and 1941 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:47,954 INFO L93 Difference]: Finished difference Result 2479 states and 3319 transitions. [2023-04-03 03:19:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:47,956 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:19:47,956 INFO L226 Difference]: Without dead ends: 2353 [2023-04-03 03:19:47,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:47,958 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 4976 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:47,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4976 Valid, 3656 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2023-04-03 03:19:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1440. [2023-04-03 03:19:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.375) internal successors, (1936), 1436 states have internal predecessors, (1936), 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) [2023-04-03 03:19:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1939 transitions. [2023-04-03 03:19:48,531 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1939 transitions. Word has length 116 [2023-04-03 03:19:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:48,531 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1939 transitions. [2023-04-03 03:19:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1939 transitions. [2023-04-03 03:19:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:48,532 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:48,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-04-03 03:19:48,532 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:48,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash -256899954, now seen corresponding path program 1 times [2023-04-03 03:19:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:48,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585800657] [2023-04-03 03:19:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:48,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:48,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:48,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585800657] [2023-04-03 03:19:48,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585800657] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:48,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:48,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690698062] [2023-04-03 03:19:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:48,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:48,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:48,870 INFO L87 Difference]: Start difference. First operand 1440 states and 1939 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:51,775 INFO L93 Difference]: Finished difference Result 2545 states and 3423 transitions. [2023-04-03 03:19:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:51,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:51,778 INFO L225 Difference]: With dead ends: 2545 [2023-04-03 03:19:51,778 INFO L226 Difference]: Without dead ends: 2393 [2023-04-03 03:19:51,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:51,778 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 6290 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 3498 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6290 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 3516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:51,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6290 Valid, 4148 Invalid, 3516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3498 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:19:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2023-04-03 03:19:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 1440. [2023-04-03 03:19:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.3735795454545454) internal successors, (1934), 1436 states have internal predecessors, (1934), 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) [2023-04-03 03:19:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1937 transitions. [2023-04-03 03:19:52,344 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1937 transitions. Word has length 116 [2023-04-03 03:19:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:52,345 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1937 transitions. [2023-04-03 03:19:52,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1937 transitions. [2023-04-03 03:19:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:52,346 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:52,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-04-03 03:19:52,346 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:52,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2085379645, now seen corresponding path program 1 times [2023-04-03 03:19:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:52,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399002546] [2023-04-03 03:19:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:52,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:52,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:52,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399002546] [2023-04-03 03:19:52,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399002546] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:52,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:52,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415940976] [2023-04-03 03:19:52,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:52,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:52,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:52,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:52,638 INFO L87 Difference]: Start difference. First operand 1440 states and 1937 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:55,487 INFO L93 Difference]: Finished difference Result 2473 states and 3308 transitions. [2023-04-03 03:19:55,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:55,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:55,489 INFO L225 Difference]: With dead ends: 2473 [2023-04-03 03:19:55,489 INFO L226 Difference]: Without dead ends: 2353 [2023-04-03 03:19:55,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:19:55,490 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 4890 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 3279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4890 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:55,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4890 Valid, 3740 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3279 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2023-04-03 03:19:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1440. [2023-04-03 03:19:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.3721590909090908) internal successors, (1932), 1436 states have internal predecessors, (1932), 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) [2023-04-03 03:19:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1935 transitions. [2023-04-03 03:19:56,047 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1935 transitions. Word has length 116 [2023-04-03 03:19:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:56,047 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1935 transitions. [2023-04-03 03:19:56,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1935 transitions. [2023-04-03 03:19:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:56,048 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:56,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:56,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-04-03 03:19:56,049 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:56,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1019889441, now seen corresponding path program 1 times [2023-04-03 03:19:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:56,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816380038] [2023-04-03 03:19:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:19:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:19:56,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:19:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816380038] [2023-04-03 03:19:56,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816380038] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:19:56,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:19:56,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:19:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375245412] [2023-04-03 03:19:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:19:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:19:56,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:19:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:19:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:19:56,367 INFO L87 Difference]: Start difference. First operand 1440 states and 1935 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:59,266 INFO L93 Difference]: Finished difference Result 2479 states and 3313 transitions. [2023-04-03 03:19:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:19:59,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:19:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:59,269 INFO L225 Difference]: With dead ends: 2479 [2023-04-03 03:19:59,269 INFO L226 Difference]: Without dead ends: 2353 [2023-04-03 03:19:59,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:19:59,270 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 6512 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 3271 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6512 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:59,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6512 Valid, 3733 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3271 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:19:59,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2023-04-03 03:19:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1440. [2023-04-03 03:19:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1408 states have (on average 1.3707386363636365) internal successors, (1930), 1436 states have internal predecessors, (1930), 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) [2023-04-03 03:19:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1933 transitions. [2023-04-03 03:19:59,854 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1933 transitions. Word has length 116 [2023-04-03 03:19:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:19:59,855 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1933 transitions. [2023-04-03 03:19:59,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:19:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1933 transitions. [2023-04-03 03:19:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:19:59,856 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:19:59,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:19:59,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-04-03 03:19:59,856 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:19:59,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:19:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1385221697, now seen corresponding path program 1 times [2023-04-03 03:19:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:19:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365587529] [2023-04-03 03:19:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:19:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:19:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:00,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:00,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365587529] [2023-04-03 03:20:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365587529] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:00,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:20:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198273835] [2023-04-03 03:20:00,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:00,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:20:00,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:20:00,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:20:00,389 INFO L87 Difference]: Start difference. First operand 1440 states and 1933 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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) [2023-04-03 03:20:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:05,762 INFO L93 Difference]: Finished difference Result 3463 states and 4652 transitions. [2023-04-03 03:20:05,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:20:05,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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 116 [2023-04-03 03:20:05,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:05,766 INFO L225 Difference]: With dead ends: 3463 [2023-04-03 03:20:05,766 INFO L226 Difference]: Without dead ends: 3229 [2023-04-03 03:20:05,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:20:05,767 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 7807 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 4664 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7807 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 4988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 4664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:05,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7807 Valid, 5243 Invalid, 4988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 4664 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 03:20:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2023-04-03 03:20:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 1448. [2023-04-03 03:20:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.36864406779661) internal successors, (1938), 1444 states have internal predecessors, (1938), 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) [2023-04-03 03:20:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1941 transitions. [2023-04-03 03:20:06,369 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1941 transitions. Word has length 116 [2023-04-03 03:20:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:06,369 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1941 transitions. [2023-04-03 03:20:06,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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) [2023-04-03 03:20:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1941 transitions. [2023-04-03 03:20:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:20:06,371 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:06,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:06,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-04-03 03:20:06,371 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:06,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash 697644912, now seen corresponding path program 1 times [2023-04-03 03:20:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:06,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322587551] [2023-04-03 03:20:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:06,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322587551] [2023-04-03 03:20:06,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322587551] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:06,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:06,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:06,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869533348] [2023-04-03 03:20:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:06,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:06,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:06,665 INFO L87 Difference]: Start difference. First operand 1448 states and 1941 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:09,642 INFO L93 Difference]: Finished difference Result 2530 states and 3393 transitions. [2023-04-03 03:20:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:09,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:20:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:09,644 INFO L225 Difference]: With dead ends: 2530 [2023-04-03 03:20:09,645 INFO L226 Difference]: Without dead ends: 2401 [2023-04-03 03:20:09,645 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 [2023-04-03 03:20:09,645 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 3100 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:09,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 4220 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:20:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2023-04-03 03:20:10,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1448. [2023-04-03 03:20:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.3679378531073447) internal successors, (1937), 1444 states have internal predecessors, (1937), 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) [2023-04-03 03:20:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1940 transitions. [2023-04-03 03:20:10,268 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1940 transitions. Word has length 116 [2023-04-03 03:20:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:10,268 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1940 transitions. [2023-04-03 03:20:10,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1940 transitions. [2023-04-03 03:20:10,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:20:10,269 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:10,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:10,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-04-03 03:20:10,270 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:10,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:10,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1130834779, now seen corresponding path program 1 times [2023-04-03 03:20:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128282033] [2023-04-03 03:20:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:10,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:10,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:10,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128282033] [2023-04-03 03:20:10,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128282033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:10,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:10,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354890124] [2023-04-03 03:20:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:10,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:10,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:10,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:10,578 INFO L87 Difference]: Start difference. First operand 1448 states and 1940 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:13,576 INFO L93 Difference]: Finished difference Result 2473 states and 3300 transitions. [2023-04-03 03:20:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:20:13,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:13,579 INFO L225 Difference]: With dead ends: 2473 [2023-04-03 03:20:13,579 INFO L226 Difference]: Without dead ends: 2361 [2023-04-03 03:20:13,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:13,580 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 4766 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:13,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 3815 Invalid, 3340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3326 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:20:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2023-04-03 03:20:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1448. [2023-04-03 03:20:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.3672316384180792) internal successors, (1936), 1444 states have internal predecessors, (1936), 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) [2023-04-03 03:20:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1939 transitions. [2023-04-03 03:20:14,198 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1939 transitions. Word has length 116 [2023-04-03 03:20:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:14,198 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1939 transitions. [2023-04-03 03:20:14,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1939 transitions. [2023-04-03 03:20:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:20:14,200 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:14,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:14,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-04-03 03:20:14,200 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:14,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash -509677313, now seen corresponding path program 1 times [2023-04-03 03:20:14,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:14,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27306381] [2023-04-03 03:20:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:14,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:14,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27306381] [2023-04-03 03:20:14,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27306381] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:14,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:14,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:14,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420420920] [2023-04-03 03:20:14,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:14,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:14,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:14,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:14,602 INFO L87 Difference]: Start difference. First operand 1448 states and 1939 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:17,737 INFO L93 Difference]: Finished difference Result 2467 states and 3290 transitions. [2023-04-03 03:20:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:17,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:20:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:17,740 INFO L225 Difference]: With dead ends: 2467 [2023-04-03 03:20:17,740 INFO L226 Difference]: Without dead ends: 2361 [2023-04-03 03:20:17,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:20:17,741 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 6245 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6245 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:17,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6245 Valid, 3898 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3430 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:20:17,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2023-04-03 03:20:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1448. [2023-04-03 03:20:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.3665254237288136) internal successors, (1935), 1444 states have internal predecessors, (1935), 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) [2023-04-03 03:20:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1938 transitions. [2023-04-03 03:20:18,366 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1938 transitions. Word has length 116 [2023-04-03 03:20:18,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:18,366 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1938 transitions. [2023-04-03 03:20:18,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1938 transitions. [2023-04-03 03:20:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:20:18,367 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:18,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:18,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-04-03 03:20:18,367 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:18,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2141162718, now seen corresponding path program 1 times [2023-04-03 03:20:18,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:18,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22398764] [2023-04-03 03:20:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:18,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22398764] [2023-04-03 03:20:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22398764] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:18,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:18,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:18,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625292993] [2023-04-03 03:20:18,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:18,771 INFO L87 Difference]: Start difference. First operand 1448 states and 1938 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:21,812 INFO L93 Difference]: Finished difference Result 2473 states and 3298 transitions. [2023-04-03 03:20:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:21,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:20:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:21,815 INFO L225 Difference]: With dead ends: 2473 [2023-04-03 03:20:21,815 INFO L226 Difference]: Without dead ends: 2361 [2023-04-03 03:20:21,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:20:21,815 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 4752 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:21,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4752 Valid, 3876 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3398 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:20:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2023-04-03 03:20:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1448. [2023-04-03 03:20:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1416 states have (on average 1.365819209039548) internal successors, (1934), 1444 states have internal predecessors, (1934), 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) [2023-04-03 03:20:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1937 transitions. [2023-04-03 03:20:22,449 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1937 transitions. Word has length 116 [2023-04-03 03:20:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:22,449 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1937 transitions. [2023-04-03 03:20:22,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1937 transitions. [2023-04-03 03:20:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:20:22,451 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:22,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:22,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-04-03 03:20:22,451 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr23ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:22,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1223859900, now seen corresponding path program 1 times [2023-04-03 03:20:22,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074718666] [2023-04-03 03:20:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:22,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074718666] [2023-04-03 03:20:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074718666] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:22,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:22,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:20:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941575890] [2023-04-03 03:20:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:20:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:20:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:20:22,984 INFO L87 Difference]: Start difference. First operand 1448 states and 1937 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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) [2023-04-03 03:20:28,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:28,203 INFO L93 Difference]: Finished difference Result 3184 states and 4260 transitions. [2023-04-03 03:20:28,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:20:28,204 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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 116 [2023-04-03 03:20:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:28,206 INFO L225 Difference]: With dead ends: 3184 [2023-04-03 03:20:28,207 INFO L226 Difference]: Without dead ends: 3046 [2023-04-03 03:20:28,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:20:28,207 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 10291 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 4047 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10291 SdHoareTripleChecker+Valid, 4622 SdHoareTripleChecker+Invalid, 4398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:28,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10291 Valid, 4622 Invalid, 4398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4047 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-03 03:20:28,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2023-04-03 03:20:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1452. [2023-04-03 03:20:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1420 states have (on average 1.3647887323943662) internal successors, (1938), 1448 states have internal predecessors, (1938), 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) [2023-04-03 03:20:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1941 transitions. [2023-04-03 03:20:28,837 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1941 transitions. Word has length 116 [2023-04-03 03:20:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:28,837 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1941 transitions. [2023-04-03 03:20:28,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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) [2023-04-03 03:20:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1941 transitions. [2023-04-03 03:20:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:20:28,838 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:28,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:28,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-04-03 03:20:28,838 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr25ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:28,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1353310645, now seen corresponding path program 1 times [2023-04-03 03:20:28,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:28,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216003356] [2023-04-03 03:20:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:28,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:29,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:29,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216003356] [2023-04-03 03:20:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216003356] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:29,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:29,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:20:29,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306932642] [2023-04-03 03:20:29,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:29,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:20:29,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:20:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:20:29,206 INFO L87 Difference]: Start difference. First operand 1452 states and 1941 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:20:32,331 INFO L93 Difference]: Finished difference Result 2481 states and 3304 transitions. [2023-04-03 03:20:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:20:32,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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 116 [2023-04-03 03:20:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:20:32,334 INFO L225 Difference]: With dead ends: 2481 [2023-04-03 03:20:32,334 INFO L226 Difference]: Without dead ends: 2365 [2023-04-03 03:20:32,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:20:32,334 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 6269 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 3410 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 3867 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:20:32,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 3867 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3410 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 03:20:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-04-03 03:20:32,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1452. [2023-04-03 03:20:32,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1420 states have (on average 1.3640845070422536) internal successors, (1937), 1448 states have internal predecessors, (1937), 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) [2023-04-03 03:20:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1940 transitions. [2023-04-03 03:20:32,971 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1940 transitions. Word has length 116 [2023-04-03 03:20:32,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:20:32,971 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1940 transitions. [2023-04-03 03:20:32,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 8 states have internal predecessors, (113), 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) [2023-04-03 03:20:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1940 transitions. [2023-04-03 03:20:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:20:32,973 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:20:32,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:20:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-04-03 03:20:32,973 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr26ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-03 03:20:32,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:20:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash -315292735, now seen corresponding path program 1 times [2023-04-03 03:20:32,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:20:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738206910] [2023-04-03 03:20:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:20:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:20:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:20:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:20:33,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:20:33,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738206910] [2023-04-03 03:20:33,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738206910] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:20:33,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:20:33,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:20:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924965108] [2023-04-03 03:20:33,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:20:33,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:20:33,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:20:33,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:20:33,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:20:33,518 INFO L87 Difference]: Start difference. First operand 1452 states and 1940 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 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)