/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:00:49,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:00:49,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:00:49,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:00:49,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:00:49,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:00:49,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:00:49,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:00:49,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:00:49,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:00:49,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:00:49,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 03:00:49,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 03:00:49,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 03:00:49,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 03:00:49,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 03:00:49,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 03:00:49,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 03:00:49,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 03:00:49,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 03:00:49,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 03:00:49,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 03:00:49,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 03:00:49,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 03:00:49,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 03:00:49,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 03:00:49,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 03:00:49,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 03:00:49,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 03:00:49,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 03:00:49,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 03:00:49,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 03:00:49,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 03:00:49,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 03:00:49,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 03:00:49,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 03:00:49,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 03:00:49,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 03:00:49,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:00:49,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:00:49,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:00:49,796 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 03:00:49,821 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:00:49,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:00:49,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:00:49,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:00:49,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:00:49,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:00:49,823 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:00:49,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:00:49,823 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:00:49,823 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:00:49,823 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:00:49,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:00:49,824 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:00:49,824 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:00:49,824 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:00:49,824 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:00:49,824 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:00:49,824 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:00:49,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:00:49,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:00:49,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:00:49,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:00:49,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:00:49,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:00:50,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:00:50,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:00:50,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:00:50,025 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:00:50,025 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:00:50,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:00:51,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:00:51,265 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:00:51,266 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:00:51,291 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4699893dd/dfafbb0ffbcf4991962697c954807355/FLAG52b3e1fed [2023-04-03 03:00:51,302 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4699893dd/dfafbb0ffbcf4991962697c954807355 [2023-04-03 03:00:51,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:00:51,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:00:51,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:00:51,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:00:51,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:00:51,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6939b9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51, skipping insertion in model container [2023-04-03 03:00:51,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:00:51,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:00:51,572 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8893,8906] [2023-04-03 03:00:51,585 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12165,12178] [2023-04-03 03:00:51,591 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13321,13334] [2023-04-03 03:00:51,594 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13977,13990] [2023-04-03 03:00:51,602 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15456,15469] [2023-04-03 03:00:51,606 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16112,16125] [2023-04-03 03:00:51,613 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17096,17109] [2023-04-03 03:00:51,624 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19392,19405] [2023-04-03 03:00:51,627 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20051,20064] [2023-04-03 03:00:51,632 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21033,21046] [2023-04-03 03:00:51,640 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22824,22837] [2023-04-03 03:00:51,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:00:51,710 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:00:51,768 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8893,8906] [2023-04-03 03:00:51,775 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12165,12178] [2023-04-03 03:00:51,779 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13321,13334] [2023-04-03 03:00:51,782 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13977,13990] [2023-04-03 03:00:51,787 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15456,15469] [2023-04-03 03:00:51,790 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16112,16125] [2023-04-03 03:00:51,793 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17096,17109] [2023-04-03 03:00:51,799 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19392,19405] [2023-04-03 03:00:51,802 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20051,20064] [2023-04-03 03:00:51,809 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21033,21046] [2023-04-03 03:00:51,824 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22824,22837] [2023-04-03 03:00:51,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:00:51,876 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:00:51,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51 WrapperNode [2023-04-03 03:00:51,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:00:51,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:00:51,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:00:51,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:00:51,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:51,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:00:51,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:00:51,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:00:51,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:00:51,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (1/1) ... [2023-04-03 03:00:52,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:00:52,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:00:52,025 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 03:00:52,056 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 03:00:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:00:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:00:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:00:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:00:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:00:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:00:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:00:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:00:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:00:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:00:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 03:00:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:00:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:00:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:00:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:00:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:00:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:00:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:00:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:00:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:00:52,261 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:00:52,263 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:00:53,175 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:00:53,240 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:00:53,240 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:00:53,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:00:53 BoogieIcfgContainer [2023-04-03 03:00:53,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:00:53,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:00:53,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:00:53,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:00:53,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:00:51" (1/3) ... [2023-04-03 03:00:53,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2e626d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:00:53, skipping insertion in model container [2023-04-03 03:00:53,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:00:51" (2/3) ... [2023-04-03 03:00:53,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2e626d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:00:53, skipping insertion in model container [2023-04-03 03:00:53,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:00:53" (3/3) ... [2023-04-03 03:00:53,251 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:00:53,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:00:53,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-04-03 03:00:53,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:00:53,323 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;@5973cbb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:00:53,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-04-03 03:00:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 343 states, 326 states have (on average 1.843558282208589) internal successors, (601), 338 states have internal predecessors, (601), 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 03:00:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-03 03:00:53,341 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:53,342 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] [2023-04-03 03:00:53,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:53,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash 139459177, now seen corresponding path program 1 times [2023-04-03 03:00:53,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167559529] [2023-04-03 03:00:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:53,778 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 03:00:53,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:53,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167559529] [2023-04-03 03:00:53,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167559529] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:53,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:53,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:00:53,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47090894] [2023-04-03 03:00:53,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:53,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:00:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:53,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:00:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:00:53,820 INFO L87 Difference]: Start difference. First operand has 343 states, 326 states have (on average 1.843558282208589) internal successors, (601), 338 states have internal predecessors, (601), 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 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (2), 2 states 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 03:00:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:54,100 INFO L93 Difference]: Finished difference Result 540 states and 913 transitions. [2023-04-03 03:00:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:00:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (2), 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 61 [2023-04-03 03:00:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:54,116 INFO L225 Difference]: With dead ends: 540 [2023-04-03 03:00:54,117 INFO L226 Difference]: Without dead ends: 280 [2023-04-03 03:00:54,125 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 03:00:54,129 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1352 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:54,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 361 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:00:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-04-03 03:00:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-04-03 03:00:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 266 states have (on average 1.263157894736842) internal successors, (336), 276 states have internal predecessors, (336), 2 states have call successors, (2), 2 states 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 03:00:54,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 339 transitions. [2023-04-03 03:00:54,196 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 339 transitions. Word has length 61 [2023-04-03 03:00:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:54,196 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 339 transitions. [2023-04-03 03:00:54,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (2), 2 states 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 03:00:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 339 transitions. [2023-04-03 03:00:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 03:00:54,204 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:54,204 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] [2023-04-03 03:00:54,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:00:54,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:54,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1628538534, now seen corresponding path program 1 times [2023-04-03 03:00:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:54,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950930844] [2023-04-03 03:00:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:54,387 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 03:00:54,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950930844] [2023-04-03 03:00:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950930844] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:54,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:54,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:00:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813636282] [2023-04-03 03:00:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:54,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:00:54,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:00:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:00:54,389 INFO L87 Difference]: Start difference. First operand 280 states and 339 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states 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 03:00:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:54,561 INFO L93 Difference]: Finished difference Result 464 states and 575 transitions. [2023-04-03 03:00:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:00:54,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 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 62 [2023-04-03 03:00:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:54,563 INFO L225 Difference]: With dead ends: 464 [2023-04-03 03:00:54,563 INFO L226 Difference]: Without dead ends: 254 [2023-04-03 03:00:54,565 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 03:00:54,566 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 854 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:54,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 197 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:00:54,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-04-03 03:00:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2023-04-03 03:00:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 240 states have (on average 1.2708333333333333) internal successors, (305), 250 states have internal predecessors, (305), 2 states have call successors, (2), 2 states 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 03:00:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 308 transitions. [2023-04-03 03:00:54,589 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 308 transitions. Word has length 62 [2023-04-03 03:00:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:54,590 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 308 transitions. [2023-04-03 03:00:54,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states 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 03:00:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 308 transitions. [2023-04-03 03:00:54,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-03 03:00:54,591 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:54,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:00:54,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:54,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash 289985863, now seen corresponding path program 1 times [2023-04-03 03:00:54,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:54,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191785160] [2023-04-03 03:00:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:54,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:54,737 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 03:00:54,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191785160] [2023-04-03 03:00:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191785160] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:54,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:54,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:00:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443530512] [2023-04-03 03:00:54,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:54,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:00:54,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:54,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:00:54,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:00:54,740 INFO L87 Difference]: Start difference. First operand 254 states and 308 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:54,885 INFO L93 Difference]: Finished difference Result 438 states and 543 transitions. [2023-04-03 03:00:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:00:54,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2023-04-03 03:00:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:54,886 INFO L225 Difference]: With dead ends: 438 [2023-04-03 03:00:54,886 INFO L226 Difference]: Without dead ends: 244 [2023-04-03 03:00:54,887 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 03:00:54,887 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 800 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:54,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 183 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:00:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-04-03 03:00:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2023-04-03 03:00:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 230 states have (on average 1.2695652173913043) internal successors, (292), 240 states have internal predecessors, (292), 2 states have call successors, (2), 2 states 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 03:00:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 295 transitions. [2023-04-03 03:00:54,899 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 295 transitions. Word has length 63 [2023-04-03 03:00:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:54,899 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 295 transitions. [2023-04-03 03:00:54,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:54,899 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 295 transitions. [2023-04-03 03:00:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-03 03:00:54,900 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:54,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:54,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:00:54,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:54,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash 41594340, now seen corresponding path program 1 times [2023-04-03 03:00:54,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:54,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321464423] [2023-04-03 03:00:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:54,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:55,019 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 03:00:55,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321464423] [2023-04-03 03:00:55,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321464423] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:55,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:55,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:00:55,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779714018] [2023-04-03 03:00:55,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:55,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:00:55,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:55,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:00:55,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:00:55,025 INFO L87 Difference]: Start difference. First operand 244 states and 295 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:55,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:55,236 INFO L93 Difference]: Finished difference Result 543 states and 672 transitions. [2023-04-03 03:00:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:00:55,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-04-03 03:00:55,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:55,238 INFO L225 Difference]: With dead ends: 543 [2023-04-03 03:00:55,239 INFO L226 Difference]: Without dead ends: 345 [2023-04-03 03:00:55,239 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 03:00:55,240 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1026 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:55,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 266 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:00:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-04-03 03:00:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 303. [2023-04-03 03:00:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.3183391003460208) internal successors, (381), 299 states have internal predecessors, (381), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 384 transitions. [2023-04-03 03:00:55,267 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 384 transitions. Word has length 64 [2023-04-03 03:00:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:55,268 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 384 transitions. [2023-04-03 03:00:55,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 384 transitions. [2023-04-03 03:00:55,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-03 03:00:55,270 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:55,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:55,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:00:55,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:55,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1661035771, now seen corresponding path program 1 times [2023-04-03 03:00:55,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:55,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070677372] [2023-04-03 03:00:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:55,581 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 03:00:55,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:55,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070677372] [2023-04-03 03:00:55,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070677372] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:55,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:55,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:00:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259290297] [2023-04-03 03:00:55,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:55,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:00:55,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:00:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:00:55,584 INFO L87 Difference]: Start difference. First operand 303 states and 384 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:55,857 INFO L93 Difference]: Finished difference Result 577 states and 717 transitions. [2023-04-03 03:00:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 03:00:55,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-04-03 03:00:55,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:55,859 INFO L225 Difference]: With dead ends: 577 [2023-04-03 03:00:55,859 INFO L226 Difference]: Without dead ends: 430 [2023-04-03 03:00:55,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-03 03:00:55,860 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1409 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:55,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 395 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:00:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-04-03 03:00:55,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 303. [2023-04-03 03:00:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.314878892733564) internal successors, (380), 299 states have internal predecessors, (380), 2 states have call successors, (2), 2 states 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 03:00:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 383 transitions. [2023-04-03 03:00:55,881 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 383 transitions. Word has length 65 [2023-04-03 03:00:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:55,882 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 383 transitions. [2023-04-03 03:00:55,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:55,883 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 383 transitions. [2023-04-03 03:00:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-03 03:00:55,883 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:55,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:55,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:00:55,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:55,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1320219973, now seen corresponding path program 1 times [2023-04-03 03:00:55,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:55,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683582561] [2023-04-03 03:00:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:56,083 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 03:00:56,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:56,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683582561] [2023-04-03 03:00:56,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683582561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:56,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:56,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:56,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522048290] [2023-04-03 03:00:56,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:56,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:56,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:56,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:56,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:56,085 INFO L87 Difference]: Start difference. First operand 303 states and 383 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:56,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:56,501 INFO L93 Difference]: Finished difference Result 601 states and 762 transitions. [2023-04-03 03:00:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:56,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-04-03 03:00:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:56,505 INFO L225 Difference]: With dead ends: 601 [2023-04-03 03:00:56,505 INFO L226 Difference]: Without dead ends: 596 [2023-04-03 03:00:56,506 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 03:00:56,506 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 819 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:56,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 770 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:00:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-04-03 03:00:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 303. [2023-04-03 03:00:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.3114186851211074) internal successors, (379), 299 states have internal predecessors, (379), 2 states have call successors, (2), 2 states 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 03:00:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 382 transitions. [2023-04-03 03:00:56,551 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 382 transitions. Word has length 65 [2023-04-03 03:00:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:56,552 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 382 transitions. [2023-04-03 03:00:56,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 382 transitions. [2023-04-03 03:00:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-03 03:00:56,553 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:56,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:00:56,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:56,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1764176093, now seen corresponding path program 1 times [2023-04-03 03:00:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325158632] [2023-04-03 03:00:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:00:56,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:56,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325158632] [2023-04-03 03:00:56,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325158632] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:56,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:56,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711986167] [2023-04-03 03:00:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:56,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:56,769 INFO L87 Difference]: Start difference. First operand 303 states and 382 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:57,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:57,190 INFO L93 Difference]: Finished difference Result 481 states and 615 transitions. [2023-04-03 03:00:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:57,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-04-03 03:00:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:57,192 INFO L225 Difference]: With dead ends: 481 [2023-04-03 03:00:57,192 INFO L226 Difference]: Without dead ends: 379 [2023-04-03 03:00:57,192 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 03:00:57,193 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1322 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:57,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 675 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:00:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-04-03 03:00:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 303. [2023-04-03 03:00:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.3079584775086506) internal successors, (378), 299 states have internal predecessors, (378), 2 states have call successors, (2), 2 states 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 03:00:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 381 transitions. [2023-04-03 03:00:57,223 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 381 transitions. Word has length 65 [2023-04-03 03:00:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:57,224 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 381 transitions. [2023-04-03 03:00:57,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 381 transitions. [2023-04-03 03:00:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:00:57,225 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:57,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:57,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:00:57,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:57,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1359832289, now seen corresponding path program 1 times [2023-04-03 03:00:57,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:57,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768570976] [2023-04-03 03:00:57,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:57,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:57,466 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 03:00:57,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768570976] [2023-04-03 03:00:57,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768570976] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:57,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:57,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:57,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597176583] [2023-04-03 03:00:57,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:57,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:57,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:57,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:57,468 INFO L87 Difference]: Start difference. First operand 303 states and 381 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:57,969 INFO L93 Difference]: Finished difference Result 696 states and 896 transitions. [2023-04-03 03:00:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 03:00:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:57,971 INFO L225 Difference]: With dead ends: 696 [2023-04-03 03:00:57,971 INFO L226 Difference]: Without dead ends: 616 [2023-04-03 03:00:57,971 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 03:00:57,972 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1567 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:57,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 822 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:00:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-04-03 03:00:58,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 303. [2023-04-03 03:00:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.3044982698961938) internal successors, (377), 299 states have internal predecessors, (377), 2 states have call successors, (2), 2 states 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 03:00:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 380 transitions. [2023-04-03 03:00:58,002 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 380 transitions. Word has length 67 [2023-04-03 03:00:58,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:58,002 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 380 transitions. [2023-04-03 03:00:58,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:58,002 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 380 transitions. [2023-04-03 03:00:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:00:58,003 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:58,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:58,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:00:58,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:58,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash -554449719, now seen corresponding path program 1 times [2023-04-03 03:00:58,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:58,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491053575] [2023-04-03 03:00:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:58,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:58,211 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 03:00:58,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491053575] [2023-04-03 03:00:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491053575] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:58,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:58,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209169073] [2023-04-03 03:00:58,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:58,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:58,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:58,213 INFO L87 Difference]: Start difference. First operand 303 states and 380 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:58,768 INFO L93 Difference]: Finished difference Result 666 states and 848 transitions. [2023-04-03 03:00:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:58,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 03:00:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:58,770 INFO L225 Difference]: With dead ends: 666 [2023-04-03 03:00:58,770 INFO L226 Difference]: Without dead ends: 596 [2023-04-03 03:00:58,771 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 03:00:58,772 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1515 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:58,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 773 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:00:58,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-04-03 03:00:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 303. [2023-04-03 03:00:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.301038062283737) internal successors, (376), 299 states have internal predecessors, (376), 2 states have call successors, (2), 2 states 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 03:00:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 379 transitions. [2023-04-03 03:00:58,806 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 379 transitions. Word has length 67 [2023-04-03 03:00:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:58,806 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 379 transitions. [2023-04-03 03:00:58,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 379 transitions. [2023-04-03 03:00:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:00:58,807 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:58,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:00:58,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:58,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:58,808 INFO L85 PathProgramCache]: Analyzing trace with hash -666185483, now seen corresponding path program 1 times [2023-04-03 03:00:58,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:58,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986599632] [2023-04-03 03:00:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:58,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:00:59,086 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 03:00:59,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:00:59,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986599632] [2023-04-03 03:00:59,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986599632] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:00:59,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:00:59,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:00:59,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059376347] [2023-04-03 03:00:59,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:00:59,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:00:59,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:00:59,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:00:59,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:00:59,087 INFO L87 Difference]: Start difference. First operand 303 states and 379 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:00:59,647 INFO L93 Difference]: Finished difference Result 669 states and 850 transitions. [2023-04-03 03:00:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:00:59,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 03:00:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:00:59,649 INFO L225 Difference]: With dead ends: 669 [2023-04-03 03:00:59,649 INFO L226 Difference]: Without dead ends: 596 [2023-04-03 03:00:59,650 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 03:00:59,650 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1492 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:00:59,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 822 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:00:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-04-03 03:00:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 303. [2023-04-03 03:00:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.2975778546712802) internal successors, (375), 299 states have internal predecessors, (375), 2 states have call successors, (2), 2 states 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 03:00:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 378 transitions. [2023-04-03 03:00:59,685 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 378 transitions. Word has length 67 [2023-04-03 03:00:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:00:59,685 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 378 transitions. [2023-04-03 03:00:59,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:00:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 378 transitions. [2023-04-03 03:00:59,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:00:59,686 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:00:59,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:00:59,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:00:59,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:00:59,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:00:59,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1262971029, now seen corresponding path program 1 times [2023-04-03 03:00:59,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:00:59,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670357016] [2023-04-03 03:00:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:00:59,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:00:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:00,106 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 03:01:00,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:00,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670357016] [2023-04-03 03:01:00,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670357016] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:00,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:00,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:00,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684023351] [2023-04-03 03:01:00,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:00,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:00,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:00,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:00,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:00,107 INFO L87 Difference]: Start difference. First operand 303 states and 378 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:01,405 INFO L93 Difference]: Finished difference Result 1025 states and 1326 transitions. [2023-04-03 03:01:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:01:01,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 03:01:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:01,408 INFO L225 Difference]: With dead ends: 1025 [2023-04-03 03:01:01,408 INFO L226 Difference]: Without dead ends: 940 [2023-04-03 03:01:01,409 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 03:01:01,409 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 2283 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:01,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2283 Valid, 1250 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:01:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-04-03 03:01:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 307. [2023-04-03 03:01:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 293 states have (on average 1.2935153583617747) internal successors, (379), 303 states have internal predecessors, (379), 2 states have call successors, (2), 2 states 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 03:01:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 382 transitions. [2023-04-03 03:01:01,482 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 382 transitions. Word has length 67 [2023-04-03 03:01:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:01,482 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 382 transitions. [2023-04-03 03:01:01,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:01,482 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 382 transitions. [2023-04-03 03:01:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:01:01,483 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:01,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:01,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:01:01,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:01,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash 354835294, now seen corresponding path program 1 times [2023-04-03 03:01:01,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:01,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784811251] [2023-04-03 03:01:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:01,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:01,680 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 03:01:01,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:01,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784811251] [2023-04-03 03:01:01,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784811251] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:01,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:01,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362667134] [2023-04-03 03:01:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:01,682 INFO L87 Difference]: Start difference. First operand 307 states and 382 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:02,278 INFO L93 Difference]: Finished difference Result 605 states and 760 transitions. [2023-04-03 03:01:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:02,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 03:01:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:02,280 INFO L225 Difference]: With dead ends: 605 [2023-04-03 03:01:02,280 INFO L226 Difference]: Without dead ends: 600 [2023-04-03 03:01:02,281 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 03:01:02,281 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1488 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:02,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 823 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-04-03 03:01:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 307. [2023-04-03 03:01:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 293 states have (on average 1.286689419795222) internal successors, (377), 303 states have internal predecessors, (377), 2 states have call successors, (2), 2 states 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 03:01:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 380 transitions. [2023-04-03 03:01:02,331 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 380 transitions. Word has length 67 [2023-04-03 03:01:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:02,331 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 380 transitions. [2023-04-03 03:01:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 380 transitions. [2023-04-03 03:01:02,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:01:02,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:02,332 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] [2023-04-03 03:01:02,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:01:02,332 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:02,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash -30212867, now seen corresponding path program 1 times [2023-04-03 03:01:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298441347] [2023-04-03 03:01:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:02,524 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 03:01:02,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:02,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298441347] [2023-04-03 03:01:02,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298441347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:02,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:02,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:02,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593428731] [2023-04-03 03:01:02,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:02,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:02,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:02,526 INFO L87 Difference]: Start difference. First operand 307 states and 380 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:03,136 INFO L93 Difference]: Finished difference Result 633 states and 802 transitions. [2023-04-03 03:01:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:03,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 03:01:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:03,138 INFO L225 Difference]: With dead ends: 633 [2023-04-03 03:01:03,138 INFO L226 Difference]: Without dead ends: 616 [2023-04-03 03:01:03,139 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 03:01:03,139 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1484 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:03,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 875 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-04-03 03:01:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 307. [2023-04-03 03:01:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 293 states have (on average 1.2798634812286689) internal successors, (375), 303 states have internal predecessors, (375), 2 states have call successors, (2), 2 states 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 03:01:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 378 transitions. [2023-04-03 03:01:03,198 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 378 transitions. Word has length 67 [2023-04-03 03:01:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:03,198 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 378 transitions. [2023-04-03 03:01:03,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:03,198 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 378 transitions. [2023-04-03 03:01:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-03 03:01:03,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:03,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:03,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:01:03,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:03,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2043013973, now seen corresponding path program 1 times [2023-04-03 03:01:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909174996] [2023-04-03 03:01:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:03,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:03,381 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 03:01:03,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:03,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909174996] [2023-04-03 03:01:03,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909174996] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:03,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:03,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597813228] [2023-04-03 03:01:03,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:03,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:03,383 INFO L87 Difference]: Start difference. First operand 307 states and 378 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:03,823 INFO L93 Difference]: Finished difference Result 515 states and 650 transitions. [2023-04-03 03:01:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:01:03,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-04-03 03:01:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:03,824 INFO L225 Difference]: With dead ends: 515 [2023-04-03 03:01:03,824 INFO L226 Difference]: Without dead ends: 383 [2023-04-03 03:01:03,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:01:03,825 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1084 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:03,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 749 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:03,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-04-03 03:01:03,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 307. [2023-04-03 03:01:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 293 states have (on average 1.273037542662116) internal successors, (373), 303 states have internal predecessors, (373), 2 states have call successors, (2), 2 states 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 03:01:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 376 transitions. [2023-04-03 03:01:03,884 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 376 transitions. Word has length 67 [2023-04-03 03:01:03,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:03,885 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 376 transitions. [2023-04-03 03:01:03,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:03,885 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 376 transitions. [2023-04-03 03:01:03,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 03:01:03,885 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:03,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:03,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:01:03,885 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:03,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash 392186046, now seen corresponding path program 1 times [2023-04-03 03:01:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:03,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377633883] [2023-04-03 03:01:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:03,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:04,086 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 03:01:04,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377633883] [2023-04-03 03:01:04,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377633883] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:04,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:04,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965478918] [2023-04-03 03:01:04,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:04,088 INFO L87 Difference]: Start difference. First operand 307 states and 376 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:04,792 INFO L93 Difference]: Finished difference Result 701 states and 891 transitions. [2023-04-03 03:01:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:01:04,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 03:01:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:04,794 INFO L225 Difference]: With dead ends: 701 [2023-04-03 03:01:04,794 INFO L226 Difference]: Without dead ends: 616 [2023-04-03 03:01:04,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:01:04,795 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1306 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:04,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 1033 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-04-03 03:01:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 303. [2023-04-03 03:01:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.273356401384083) internal successors, (368), 299 states have internal predecessors, (368), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 371 transitions. [2023-04-03 03:01:04,849 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 371 transitions. Word has length 68 [2023-04-03 03:01:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:04,849 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 371 transitions. [2023-04-03 03:01:04,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 371 transitions. [2023-04-03 03:01:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:01:04,852 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:04,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:04,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:01:04,852 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:04,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash 334624667, now seen corresponding path program 1 times [2023-04-03 03:01:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:04,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324176512] [2023-04-03 03:01:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:05,586 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 03:01:05,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:05,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324176512] [2023-04-03 03:01:05,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324176512] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:05,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:05,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-03 03:01:05,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113314476] [2023-04-03 03:01:05,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:05,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-03 03:01:05,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:05,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-03 03:01:05,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-04-03 03:01:05,587 INFO L87 Difference]: Start difference. First operand 303 states and 371 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:07,408 INFO L93 Difference]: Finished difference Result 896 states and 1140 transitions. [2023-04-03 03:01:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 03:01:07,409 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 03:01:07,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:07,411 INFO L225 Difference]: With dead ends: 896 [2023-04-03 03:01:07,411 INFO L226 Difference]: Without dead ends: 825 [2023-04-03 03:01:07,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2023-04-03 03:01:07,412 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1482 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:07,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 3612 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:01:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-04-03 03:01:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 303. [2023-04-03 03:01:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 299 states have internal predecessors, (366), 2 states have call successors, (2), 2 states 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 03:01:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 369 transitions. [2023-04-03 03:01:07,488 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 369 transitions. Word has length 69 [2023-04-03 03:01:07,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:07,488 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 369 transitions. [2023-04-03 03:01:07,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 369 transitions. [2023-04-03 03:01:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:01:07,489 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:07,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:07,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:01:07,489 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:07,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash -21153780, now seen corresponding path program 1 times [2023-04-03 03:01:07,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:07,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780667781] [2023-04-03 03:01:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:08,648 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 03:01:08,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:08,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780667781] [2023-04-03 03:01:08,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780667781] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:08,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:08,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-03 03:01:08,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129526283] [2023-04-03 03:01:08,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:08,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-03 03:01:08,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-03 03:01:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2023-04-03 03:01:08,650 INFO L87 Difference]: Start difference. First operand 303 states and 369 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:11,728 INFO L93 Difference]: Finished difference Result 603 states and 743 transitions. [2023-04-03 03:01:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-03 03:01:11,729 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 03:01:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:11,730 INFO L225 Difference]: With dead ends: 603 [2023-04-03 03:01:11,730 INFO L226 Difference]: Without dead ends: 534 [2023-04-03 03:01:11,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=503, Invalid=2047, Unknown=0, NotChecked=0, Total=2550 [2023-04-03 03:01:11,732 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1878 mSDsluCounter, 4718 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:11,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 5065 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:01:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-04-03 03:01:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 309. [2023-04-03 03:01:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 295 states have (on average 1.264406779661017) internal successors, (373), 305 states have internal predecessors, (373), 2 states have call successors, (2), 2 states 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 03:01:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 376 transitions. [2023-04-03 03:01:11,809 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 376 transitions. Word has length 69 [2023-04-03 03:01:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:11,809 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 376 transitions. [2023-04-03 03:01:11,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 376 transitions. [2023-04-03 03:01:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:01:11,810 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:11,810 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] [2023-04-03 03:01:11,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 03:01:11,810 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:11,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash -465411091, now seen corresponding path program 1 times [2023-04-03 03:01:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:11,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360615220] [2023-04-03 03:01:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:12,187 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 03:01:12,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:12,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360615220] [2023-04-03 03:01:12,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360615220] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:12,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:12,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:12,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305072304] [2023-04-03 03:01:12,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:12,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:12,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:12,189 INFO L87 Difference]: Start difference. First operand 309 states and 376 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:12,825 INFO L93 Difference]: Finished difference Result 552 states and 695 transitions. [2023-04-03 03:01:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:01:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 03:01:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:12,827 INFO L225 Difference]: With dead ends: 552 [2023-04-03 03:01:12,827 INFO L226 Difference]: Without dead ends: 454 [2023-04-03 03:01:12,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:01:12,828 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1125 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:12,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1637 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-04-03 03:01:12,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 279. [2023-04-03 03:01:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 266 states have (on average 1.2706766917293233) internal successors, (338), 275 states have internal predecessors, (338), 2 states have call successors, (2), 2 states 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 03:01:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 341 transitions. [2023-04-03 03:01:12,906 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 341 transitions. Word has length 69 [2023-04-03 03:01:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:12,907 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 341 transitions. [2023-04-03 03:01:12,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 341 transitions. [2023-04-03 03:01:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:01:12,907 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:12,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:12,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 03:01:12,908 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:12,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1229675527, now seen corresponding path program 1 times [2023-04-03 03:01:12,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:12,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975703909] [2023-04-03 03:01:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:13,826 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 03:01:13,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:13,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975703909] [2023-04-03 03:01:13,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975703909] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:13,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:13,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-04-03 03:01:13,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17883396] [2023-04-03 03:01:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:13,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-03 03:01:13,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-03 03:01:13,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:01:13,827 INFO L87 Difference]: Start difference. First operand 279 states and 341 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:16,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:16,167 INFO L93 Difference]: Finished difference Result 584 states and 734 transitions. [2023-04-03 03:01:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-03 03:01:16,168 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 03:01:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:16,169 INFO L225 Difference]: With dead ends: 584 [2023-04-03 03:01:16,169 INFO L226 Difference]: Without dead ends: 509 [2023-04-03 03:01:16,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=328, Invalid=1394, Unknown=0, NotChecked=0, Total=1722 [2023-04-03 03:01:16,170 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1398 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 4017 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:16,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 4017 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:01:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-04-03 03:01:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 289. [2023-04-03 03:01:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 276 states have (on average 1.2681159420289856) internal successors, (350), 285 states have internal predecessors, (350), 2 states have call successors, (2), 2 states 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 03:01:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 353 transitions. [2023-04-03 03:01:16,253 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 353 transitions. Word has length 69 [2023-04-03 03:01:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:16,253 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 353 transitions. [2023-04-03 03:01:16,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 353 transitions. [2023-04-03 03:01:16,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:01:16,254 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:16,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:16,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 03:01:16,254 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:16,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:16,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1498538832, now seen corresponding path program 1 times [2023-04-03 03:01:16,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:16,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196924110] [2023-04-03 03:01:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:16,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:16,612 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 03:01:16,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:16,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196924110] [2023-04-03 03:01:16,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196924110] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:16,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:16,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377075469] [2023-04-03 03:01:16,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:16,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:16,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:16,614 INFO L87 Difference]: Start difference. First operand 289 states and 353 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:17,309 INFO L93 Difference]: Finished difference Result 505 states and 623 transitions. [2023-04-03 03:01:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:01:17,309 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 03:01:17,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:17,311 INFO L225 Difference]: With dead ends: 505 [2023-04-03 03:01:17,311 INFO L226 Difference]: Without dead ends: 433 [2023-04-03 03:01:17,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:01:17,312 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1194 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:17,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 1378 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-04-03 03:01:17,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 285. [2023-04-03 03:01:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 273 states have (on average 1.2637362637362637) internal successors, (345), 281 states have internal predecessors, (345), 2 states have call successors, (2), 2 states 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 03:01:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 348 transitions. [2023-04-03 03:01:17,404 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 348 transitions. Word has length 69 [2023-04-03 03:01:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:17,405 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 348 transitions. [2023-04-03 03:01:17,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 348 transitions. [2023-04-03 03:01:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:01:17,405 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:17,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:17,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 03:01:17,406 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:17,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1061688900, now seen corresponding path program 1 times [2023-04-03 03:01:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372913112] [2023-04-03 03:01:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:17,779 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 03:01:17,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:17,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372913112] [2023-04-03 03:01:17,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372913112] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:17,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:17,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223837088] [2023-04-03 03:01:17,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:17,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:17,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:17,781 INFO L87 Difference]: Start difference. First operand 285 states and 348 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:18,508 INFO L93 Difference]: Finished difference Result 493 states and 610 transitions. [2023-04-03 03:01:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:01:18,509 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 03:01:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:18,510 INFO L225 Difference]: With dead ends: 493 [2023-04-03 03:01:18,510 INFO L226 Difference]: Without dead ends: 419 [2023-04-03 03:01:18,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:01:18,511 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1203 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:18,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 984 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-04-03 03:01:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 275. [2023-04-03 03:01:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 264 states have (on average 1.25) internal successors, (330), 271 states have internal predecessors, (330), 2 states have call successors, (2), 2 states 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 03:01:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 333 transitions. [2023-04-03 03:01:18,618 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 333 transitions. Word has length 69 [2023-04-03 03:01:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:18,618 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 333 transitions. [2023-04-03 03:01:18,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 333 transitions. [2023-04-03 03:01:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 03:01:18,619 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:18,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:18,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 03:01:18,622 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:18,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash 695423706, now seen corresponding path program 1 times [2023-04-03 03:01:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563111554] [2023-04-03 03:01:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:18,944 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 03:01:18,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563111554] [2023-04-03 03:01:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563111554] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76900961] [2023-04-03 03:01:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:18,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:18,945 INFO L87 Difference]: Start difference. First operand 275 states and 333 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:19,525 INFO L93 Difference]: Finished difference Result 537 states and 678 transitions. [2023-04-03 03:01:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:01:19,527 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 03:01:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:19,528 INFO L225 Difference]: With dead ends: 537 [2023-04-03 03:01:19,529 INFO L226 Difference]: Without dead ends: 427 [2023-04-03 03:01:19,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:01:19,529 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 946 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:19,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1549 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-04-03 03:01:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 233. [2023-04-03 03:01:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 225 states have (on average 1.2355555555555555) internal successors, (278), 229 states have internal predecessors, (278), 2 states have call successors, (2), 2 states 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 03:01:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 281 transitions. [2023-04-03 03:01:19,620 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 281 transitions. Word has length 69 [2023-04-03 03:01:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:19,620 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 281 transitions. [2023-04-03 03:01:19,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 281 transitions. [2023-04-03 03:01:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:01:19,621 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:19,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:19,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 03:01:19,621 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:19,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:19,621 INFO L85 PathProgramCache]: Analyzing trace with hash -535421470, now seen corresponding path program 1 times [2023-04-03 03:01:19,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:19,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353652681] [2023-04-03 03:01:19,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:19,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:20,154 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 03:01:20,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353652681] [2023-04-03 03:01:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353652681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:20,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:20,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-03 03:01:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873997213] [2023-04-03 03:01:20,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:20,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-03 03:01:20,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-03 03:01:20,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-04-03 03:01:20,156 INFO L87 Difference]: Start difference. First operand 233 states and 281 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:21,096 INFO L93 Difference]: Finished difference Result 370 states and 455 transitions. [2023-04-03 03:01:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:01:21,097 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 03:01:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:21,098 INFO L225 Difference]: With dead ends: 370 [2023-04-03 03:01:21,098 INFO L226 Difference]: Without dead ends: 291 [2023-04-03 03:01:21,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2023-04-03 03:01:21,099 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 615 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:21,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 2231 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-04-03 03:01:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 228. [2023-04-03 03:01:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 220 states have (on average 1.2272727272727273) internal successors, (270), 224 states have internal predecessors, (270), 2 states have call successors, (2), 2 states 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 03:01:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 273 transitions. [2023-04-03 03:01:21,193 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 273 transitions. Word has length 70 [2023-04-03 03:01:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:21,193 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 273 transitions. [2023-04-03 03:01:21,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 273 transitions. [2023-04-03 03:01:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:01:21,194 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:21,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:21,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 03:01:21,194 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:21,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1788543879, now seen corresponding path program 1 times [2023-04-03 03:01:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292555052] [2023-04-03 03:01:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:21,456 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 03:01:21,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:21,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292555052] [2023-04-03 03:01:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292555052] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:21,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:21,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 03:01:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441201965] [2023-04-03 03:01:21,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:21,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 03:01:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:21,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 03:01:21,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-03 03:01:21,460 INFO L87 Difference]: Start difference. First operand 228 states and 273 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:21,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:21,951 INFO L93 Difference]: Finished difference Result 482 states and 597 transitions. [2023-04-03 03:01:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:01:21,951 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 03:01:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:21,952 INFO L225 Difference]: With dead ends: 482 [2023-04-03 03:01:21,952 INFO L226 Difference]: Without dead ends: 374 [2023-04-03 03:01:21,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-04-03 03:01:21,953 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 686 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:21,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 720 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-04-03 03:01:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 188. [2023-04-03 03:01:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.2307692307692308) internal successors, (224), 184 states have internal predecessors, (224), 2 states have call successors, (2), 2 states 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 03:01:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 227 transitions. [2023-04-03 03:01:22,037 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 227 transitions. Word has length 70 [2023-04-03 03:01:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:22,038 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 227 transitions. [2023-04-03 03:01:22,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 227 transitions. [2023-04-03 03:01:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:01:22,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:22,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:22,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 03:01:22,039 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:22,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1793453333, now seen corresponding path program 1 times [2023-04-03 03:01:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:22,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410297083] [2023-04-03 03:01:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:22,202 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 03:01:22,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410297083] [2023-04-03 03:01:22,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410297083] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:22,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:22,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:22,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499488777] [2023-04-03 03:01:22,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:22,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:22,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:22,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:22,208 INFO L87 Difference]: Start difference. First operand 188 states and 227 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:22,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:22,591 INFO L93 Difference]: Finished difference Result 299 states and 366 transitions. [2023-04-03 03:01:22,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:01:22,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 03:01:22,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:22,593 INFO L225 Difference]: With dead ends: 299 [2023-04-03 03:01:22,593 INFO L226 Difference]: Without dead ends: 292 [2023-04-03 03:01:22,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:01:22,593 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 729 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:22,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 406 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-04-03 03:01:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 188. [2023-04-03 03:01:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.2252747252747254) internal successors, (223), 184 states have internal predecessors, (223), 2 states have call successors, (2), 2 states 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 03:01:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 226 transitions. [2023-04-03 03:01:22,680 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 226 transitions. Word has length 70 [2023-04-03 03:01:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:22,680 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 226 transitions. [2023-04-03 03:01:22,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 226 transitions. [2023-04-03 03:01:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 03:01:22,680 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:22,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 03:01:22,681 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:22,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1525000658, now seen corresponding path program 1 times [2023-04-03 03:01:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:22,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846235855] [2023-04-03 03:01:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:22,970 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 03:01:22,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846235855] [2023-04-03 03:01:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846235855] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:22,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4244198] [2023-04-03 03:01:22,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:22,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:22,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:22,973 INFO L87 Difference]: Start difference. First operand 188 states and 226 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:24,438 INFO L93 Difference]: Finished difference Result 871 states and 1124 transitions. [2023-04-03 03:01:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:01:24,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-03 03:01:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:24,440 INFO L225 Difference]: With dead ends: 871 [2023-04-03 03:01:24,440 INFO L226 Difference]: Without dead ends: 773 [2023-04-03 03:01:24,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:01:24,441 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1660 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:24,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 1005 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:24,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-04-03 03:01:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 196. [2023-04-03 03:01:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 190 states have (on average 1.2157894736842105) internal successors, (231), 192 states have internal predecessors, (231), 2 states have call successors, (2), 2 states 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 03:01:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 234 transitions. [2023-04-03 03:01:24,533 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 234 transitions. Word has length 70 [2023-04-03 03:01:24,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:24,533 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 234 transitions. [2023-04-03 03:01:24,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 234 transitions. [2023-04-03 03:01:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 03:01:24,534 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:24,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:24,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 03:01:24,534 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:24,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1779467012, now seen corresponding path program 1 times [2023-04-03 03:01:24,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:24,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393763896] [2023-04-03 03:01:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:24,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:24,669 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 03:01:24,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393763896] [2023-04-03 03:01:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393763896] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:24,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:24,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674238996] [2023-04-03 03:01:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:24,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:24,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:24,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:24,671 INFO L87 Difference]: Start difference. First operand 196 states and 234 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states 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 03:01:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:25,105 INFO L93 Difference]: Finished difference Result 414 states and 514 transitions. [2023-04-03 03:01:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:01:25,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 03:01:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:25,106 INFO L225 Difference]: With dead ends: 414 [2023-04-03 03:01:25,106 INFO L226 Difference]: Without dead ends: 316 [2023-04-03 03:01:25,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:01:25,107 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 499 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:25,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 446 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-04-03 03:01:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 188. [2023-04-03 03:01:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.2142857142857142) internal successors, (221), 184 states have internal predecessors, (221), 2 states have call successors, (2), 2 states 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 03:01:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 224 transitions. [2023-04-03 03:01:25,195 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 224 transitions. Word has length 71 [2023-04-03 03:01:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:25,195 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 224 transitions. [2023-04-03 03:01:25,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states 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 03:01:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 224 transitions. [2023-04-03 03:01:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 03:01:25,196 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:25,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:25,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-03 03:01:25,196 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:25,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash -261020402, now seen corresponding path program 1 times [2023-04-03 03:01:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:25,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721802502] [2023-04-03 03:01:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:25,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:25,524 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 03:01:25,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:25,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721802502] [2023-04-03 03:01:25,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721802502] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:25,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:25,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:25,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323191280] [2023-04-03 03:01:25,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:25,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:25,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:25,526 INFO L87 Difference]: Start difference. First operand 188 states and 224 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:26,278 INFO L93 Difference]: Finished difference Result 446 states and 560 transitions. [2023-04-03 03:01:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:01:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 03:01:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:26,279 INFO L225 Difference]: With dead ends: 446 [2023-04-03 03:01:26,279 INFO L226 Difference]: Without dead ends: 440 [2023-04-03 03:01:26,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:01:26,280 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 703 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:26,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1374 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-04-03 03:01:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 182. [2023-04-03 03:01:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.2090395480225988) internal successors, (214), 178 states have internal predecessors, (214), 2 states have call successors, (2), 2 states 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 03:01:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 217 transitions. [2023-04-03 03:01:26,371 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 217 transitions. Word has length 72 [2023-04-03 03:01:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:26,371 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 217 transitions. [2023-04-03 03:01:26,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 217 transitions. [2023-04-03 03:01:26,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 03:01:26,372 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:26,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:26,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-03 03:01:26,372 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:26,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:26,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1388916628, now seen corresponding path program 1 times [2023-04-03 03:01:26,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:26,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936931550] [2023-04-03 03:01:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:27,252 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 03:01:27,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936931550] [2023-04-03 03:01:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936931550] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:27,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:27,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-03 03:01:27,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306793223] [2023-04-03 03:01:27,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:27,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-03 03:01:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-03 03:01:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:01:27,253 INFO L87 Difference]: Start difference. First operand 182 states and 217 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:28,542 INFO L93 Difference]: Finished difference Result 214 states and 250 transitions. [2023-04-03 03:01:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-03 03:01:28,542 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 03:01:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:28,543 INFO L225 Difference]: With dead ends: 214 [2023-04-03 03:01:28,543 INFO L226 Difference]: Without dead ends: 206 [2023-04-03 03:01:28,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=315, Invalid=1491, Unknown=0, NotChecked=0, Total=1806 [2023-04-03 03:01:28,544 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 352 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:28,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1423 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:01:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-04-03 03:01:28,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 191. [2023-04-03 03:01:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.2096774193548387) internal successors, (225), 187 states have internal predecessors, (225), 2 states have call successors, (2), 2 states 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 03:01:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 228 transitions. [2023-04-03 03:01:28,646 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 228 transitions. Word has length 72 [2023-04-03 03:01:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:28,646 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 228 transitions. [2023-04-03 03:01:28,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 228 transitions. [2023-04-03 03:01:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 03:01:28,647 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:28,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:28,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-03 03:01:28,647 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:28,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash -440553048, now seen corresponding path program 1 times [2023-04-03 03:01:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734567301] [2023-04-03 03:01:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:28,950 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 03:01:28,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:28,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734567301] [2023-04-03 03:01:28,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734567301] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:28,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:28,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362317654] [2023-04-03 03:01:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:28,952 INFO L87 Difference]: Start difference. First operand 191 states and 228 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:29,715 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2023-04-03 03:01:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:01:29,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-03 03:01:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:29,716 INFO L225 Difference]: With dead ends: 479 [2023-04-03 03:01:29,716 INFO L226 Difference]: Without dead ends: 464 [2023-04-03 03:01:29,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:01:29,718 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 671 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:29,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1179 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:01:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-04-03 03:01:29,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 170. [2023-04-03 03:01:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 166 states have (on average 1.2048192771084338) internal successors, (200), 166 states have internal predecessors, (200), 2 states have call successors, (2), 2 states 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 03:01:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 203 transitions. [2023-04-03 03:01:29,817 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 203 transitions. Word has length 73 [2023-04-03 03:01:29,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:29,817 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 203 transitions. [2023-04-03 03:01:29,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 203 transitions. [2023-04-03 03:01:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 03:01:29,818 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:29,818 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] [2023-04-03 03:01:29,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-03 03:01:29,818 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:29,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash 114585978, now seen corresponding path program 1 times [2023-04-03 03:01:29,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:29,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143750196] [2023-04-03 03:01:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:29,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:29,891 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 03:01:29,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143750196] [2023-04-03 03:01:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143750196] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:29,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523787233] [2023-04-03 03:01:29,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:29,893 INFO L87 Difference]: Start difference. First operand 170 states and 203 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:30,050 INFO L93 Difference]: Finished difference Result 246 states and 305 transitions. [2023-04-03 03:01:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-03 03:01:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:30,051 INFO L225 Difference]: With dead ends: 246 [2023-04-03 03:01:30,051 INFO L226 Difference]: Without dead ends: 211 [2023-04-03 03:01:30,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:30,052 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 55 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:30,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 244 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:30,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-04-03 03:01:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2023-04-03 03:01:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 197 states have internal predecessors, (241), 2 states have call successors, (2), 2 states 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 03:01:30,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 244 transitions. [2023-04-03 03:01:30,190 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 244 transitions. Word has length 86 [2023-04-03 03:01:30,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:30,191 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 244 transitions. [2023-04-03 03:01:30,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:30,191 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 244 transitions. [2023-04-03 03:01:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-03 03:01:30,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:30,191 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] [2023-04-03 03:01:30,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-03 03:01:30,192 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:30,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1813678135, now seen corresponding path program 1 times [2023-04-03 03:01:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490665015] [2023-04-03 03:01:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:30,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:30,261 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 03:01:30,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:30,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490665015] [2023-04-03 03:01:30,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490665015] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:30,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:30,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:30,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28553557] [2023-04-03 03:01:30,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:30,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:30,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:30,263 INFO L87 Difference]: Start difference. First operand 201 states and 244 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:30,513 INFO L93 Difference]: Finished difference Result 395 states and 506 transitions. [2023-04-03 03:01:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:30,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2023-04-03 03:01:30,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:30,514 INFO L225 Difference]: With dead ends: 395 [2023-04-03 03:01:30,514 INFO L226 Difference]: Without dead ends: 298 [2023-04-03 03:01:30,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:30,515 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 48 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:30,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 244 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-04-03 03:01:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 284. [2023-04-03 03:01:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 280 states have (on average 1.2607142857142857) internal successors, (353), 280 states have internal predecessors, (353), 2 states have call successors, (2), 2 states 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 03:01:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 356 transitions. [2023-04-03 03:01:30,736 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 356 transitions. Word has length 89 [2023-04-03 03:01:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:30,736 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 356 transitions. [2023-04-03 03:01:30,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 356 transitions. [2023-04-03 03:01:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-03 03:01:30,737 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:30,737 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] [2023-04-03 03:01:30,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-03 03:01:30,737 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:30,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:30,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1731116193, now seen corresponding path program 1 times [2023-04-03 03:01:30,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:30,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869567041] [2023-04-03 03:01:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:30,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:30,809 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 03:01:30,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:30,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869567041] [2023-04-03 03:01:30,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869567041] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944300822] [2023-04-03 03:01:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:30,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:30,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:30,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:30,811 INFO L87 Difference]: Start difference. First operand 284 states and 356 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:31,246 INFO L93 Difference]: Finished difference Result 644 states and 842 transitions. [2023-04-03 03:01:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:31,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2023-04-03 03:01:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:31,248 INFO L225 Difference]: With dead ends: 644 [2023-04-03 03:01:31,248 INFO L226 Difference]: Without dead ends: 464 [2023-04-03 03:01:31,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:31,249 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 41 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:31,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 244 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-04-03 03:01:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 438. [2023-04-03 03:01:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 434 states have (on average 1.2880184331797235) internal successors, (559), 434 states have internal predecessors, (559), 2 states have call successors, (2), 2 states 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 03:01:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 562 transitions. [2023-04-03 03:01:31,647 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 562 transitions. Word has length 92 [2023-04-03 03:01:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:31,648 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 562 transitions. [2023-04-03 03:01:31,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 562 transitions. [2023-04-03 03:01:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-03 03:01:31,648 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:31,648 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] [2023-04-03 03:01:31,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-03 03:01:31,648 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:31,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1261215680, now seen corresponding path program 1 times [2023-04-03 03:01:31,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:31,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415745129] [2023-04-03 03:01:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:31,723 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 03:01:31,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415745129] [2023-04-03 03:01:31,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415745129] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:31,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:31,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:31,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390683442] [2023-04-03 03:01:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:31,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:31,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:31,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:31,726 INFO L87 Difference]: Start difference. First operand 438 states and 562 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:32,506 INFO L93 Difference]: Finished difference Result 1106 states and 1460 transitions. [2023-04-03 03:01:32,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:32,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2023-04-03 03:01:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:32,508 INFO L225 Difference]: With dead ends: 1106 [2023-04-03 03:01:32,509 INFO L226 Difference]: Without dead ends: 772 [2023-04-03 03:01:32,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:32,509 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 31 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:32,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 244 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:32,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-04-03 03:01:33,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 722. [2023-04-03 03:01:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 718 states have (on average 1.3022284122562675) internal successors, (935), 718 states have internal predecessors, (935), 2 states have call successors, (2), 2 states 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 03:01:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 938 transitions. [2023-04-03 03:01:33,236 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 938 transitions. Word has length 95 [2023-04-03 03:01:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:33,236 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 938 transitions. [2023-04-03 03:01:33,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 938 transitions. [2023-04-03 03:01:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:01:33,237 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:33,237 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] [2023-04-03 03:01:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-03 03:01:33,237 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:33,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2101599830, now seen corresponding path program 1 times [2023-04-03 03:01:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413338237] [2023-04-03 03:01:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:33,308 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 03:01:33,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:33,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413338237] [2023-04-03 03:01:33,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413338237] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:33,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:33,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:01:33,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017421644] [2023-04-03 03:01:33,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:33,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:01:33,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:01:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:01:33,310 INFO L87 Difference]: Start difference. First operand 722 states and 938 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:35,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:35,775 INFO L93 Difference]: Finished difference Result 2723 states and 3603 transitions. [2023-04-03 03:01:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 03:01:35,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-03 03:01:35,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:35,781 INFO L225 Difference]: With dead ends: 2723 [2023-04-03 03:01:35,781 INFO L226 Difference]: Without dead ends: 2105 [2023-04-03 03:01:35,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:01:35,782 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 517 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:35,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 771 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2023-04-03 03:01:37,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 1052. [2023-04-03 03:01:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1048 states have (on average 1.2986641221374047) internal successors, (1361), 1048 states have internal predecessors, (1361), 2 states have call successors, (2), 2 states 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 03:01:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1364 transitions. [2023-04-03 03:01:37,011 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1364 transitions. Word has length 98 [2023-04-03 03:01:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:37,012 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1364 transitions. [2023-04-03 03:01:37,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1364 transitions. [2023-04-03 03:01:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:01:37,012 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:37,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:37,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-03 03:01:37,013 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:37,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:37,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1427028633, now seen corresponding path program 1 times [2023-04-03 03:01:37,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:37,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384727415] [2023-04-03 03:01:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:37,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:37,136 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 03:01:37,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:37,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384727415] [2023-04-03 03:01:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384727415] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:37,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:01:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495802352] [2023-04-03 03:01:37,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:01:37,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:37,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:01:37,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:01:37,137 INFO L87 Difference]: Start difference. First operand 1052 states and 1364 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:38,446 INFO L93 Difference]: Finished difference Result 2002 states and 2616 transitions. [2023-04-03 03:01:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 03:01:38,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:01:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:38,449 INFO L225 Difference]: With dead ends: 2002 [2023-04-03 03:01:38,449 INFO L226 Difference]: Without dead ends: 1054 [2023-04-03 03:01:38,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:01:38,451 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 126 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:38,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 253 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-04-03 03:01:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1052. [2023-04-03 03:01:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1048 states have (on average 1.2967557251908397) internal successors, (1359), 1048 states have internal predecessors, (1359), 2 states have call successors, (2), 2 states 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 03:01:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1362 transitions. [2023-04-03 03:01:39,650 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1362 transitions. Word has length 100 [2023-04-03 03:01:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:39,650 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1362 transitions. [2023-04-03 03:01:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1362 transitions. [2023-04-03 03:01:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:01:39,651 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:39,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:39,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-03 03:01:39,651 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:39,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash 716840984, now seen corresponding path program 1 times [2023-04-03 03:01:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:39,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287029793] [2023-04-03 03:01:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:39,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:39,693 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 03:01:39,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:39,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287029793] [2023-04-03 03:01:39,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287029793] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:39,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:39,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:01:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856226225] [2023-04-03 03:01:39,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:39,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:01:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:39,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:01:39,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:39,695 INFO L87 Difference]: Start difference. First operand 1052 states and 1362 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:41,169 INFO L93 Difference]: Finished difference Result 2234 states and 2924 transitions. [2023-04-03 03:01:41,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:01:41,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:01:41,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:41,172 INFO L225 Difference]: With dead ends: 2234 [2023-04-03 03:01:41,172 INFO L226 Difference]: Without dead ends: 1286 [2023-04-03 03:01:41,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:01:41,174 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 66 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:41,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 187 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:41,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2023-04-03 03:01:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1284. [2023-04-03 03:01:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1280 states have (on average 1.29140625) internal successors, (1653), 1280 states have internal predecessors, (1653), 2 states have call successors, (2), 2 states 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 03:01:42,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1656 transitions. [2023-04-03 03:01:42,661 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1656 transitions. Word has length 100 [2023-04-03 03:01:42,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:42,661 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 1656 transitions. [2023-04-03 03:01:42,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:42,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1656 transitions. [2023-04-03 03:01:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:01:42,661 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:42,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:42,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-03 03:01:42,662 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:42,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:42,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1229047116, now seen corresponding path program 1 times [2023-04-03 03:01:42,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:42,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598387293] [2023-04-03 03:01:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:42,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:42,792 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 03:01:42,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:42,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598387293] [2023-04-03 03:01:42,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598387293] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:42,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:42,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 03:01:42,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95898077] [2023-04-03 03:01:42,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:42,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 03:01:42,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:42,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 03:01:42,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 03:01:42,793 INFO L87 Difference]: Start difference. First operand 1284 states and 1656 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:45,152 INFO L93 Difference]: Finished difference Result 1963 states and 2495 transitions. [2023-04-03 03:01:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 03:01:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-03 03:01:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:45,157 INFO L225 Difference]: With dead ends: 1963 [2023-04-03 03:01:45,157 INFO L226 Difference]: Without dead ends: 1961 [2023-04-03 03:01:45,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:45,158 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 162 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:45,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 634 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:01:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2023-04-03 03:01:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1332. [2023-04-03 03:01:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1328 states have (on average 1.2628012048192772) internal successors, (1677), 1328 states have internal predecessors, (1677), 2 states have call successors, (2), 2 states 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 03:01:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1680 transitions. [2023-04-03 03:01:46,709 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1680 transitions. Word has length 101 [2023-04-03 03:01:46,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:46,710 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 1680 transitions. [2023-04-03 03:01:46,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:01:46,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1680 transitions. [2023-04-03 03:01:46,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-03 03:01:46,710 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:46,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:46,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-03 03:01:46,711 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:46,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:46,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2060137150, now seen corresponding path program 1 times [2023-04-03 03:01:46,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:46,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298898014] [2023-04-03 03:01:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:46,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 03:01:47,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:47,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298898014] [2023-04-03 03:01:47,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298898014] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:47,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:47,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:01:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832234864] [2023-04-03 03:01:47,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:47,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:01:47,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:01:47,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:01:47,023 INFO L87 Difference]: Start difference. First operand 1332 states and 1680 transitions. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 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 03:01:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:53,296 INFO L93 Difference]: Finished difference Result 5704 states and 7204 transitions. [2023-04-03 03:01:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:01:53,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 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 115 [2023-04-03 03:01:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:53,307 INFO L225 Difference]: With dead ends: 5704 [2023-04-03 03:01:53,307 INFO L226 Difference]: Without dead ends: 4462 [2023-04-03 03:01:53,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:01:53,309 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1782 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:53,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 751 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:01:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2023-04-03 03:01:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 1340. [2023-04-03 03:01:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1336 states have (on average 1.2612275449101797) internal successors, (1685), 1336 states have internal predecessors, (1685), 2 states have call successors, (2), 2 states 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 03:01:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1688 transitions. [2023-04-03 03:01:55,012 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1688 transitions. Word has length 115 [2023-04-03 03:01:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:55,013 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1688 transitions. [2023-04-03 03:01:55,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 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 03:01:55,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1688 transitions. [2023-04-03 03:01:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-03 03:01:55,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:55,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:55,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-03 03:01:55,014 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:55,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash -243858627, now seen corresponding path program 1 times [2023-04-03 03:01:55,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:55,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008424898] [2023-04-03 03:01:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:55,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:01:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 03:01:55,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:01:55,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008424898] [2023-04-03 03:01:55,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008424898] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:01:55,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:01:55,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:01:55,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542117210] [2023-04-03 03:01:55,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:01:55,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:01:55,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:01:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:01:55,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:01:55,194 INFO L87 Difference]: Start difference. First operand 1340 states and 1688 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 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 03:01:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:01:58,009 INFO L93 Difference]: Finished difference Result 3336 states and 4221 transitions. [2023-04-03 03:01:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:01:58,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 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 116 [2023-04-03 03:01:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:01:58,014 INFO L225 Difference]: With dead ends: 3336 [2023-04-03 03:01:58,014 INFO L226 Difference]: Without dead ends: 2094 [2023-04-03 03:01:58,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:01:58,016 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 313 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:01:58,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 344 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:01:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2023-04-03 03:01:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1332. [2023-04-03 03:01:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1328 states have (on average 1.2612951807228916) internal successors, (1675), 1328 states have internal predecessors, (1675), 2 states have call successors, (2), 2 states 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 03:01:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1678 transitions. [2023-04-03 03:01:59,743 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1678 transitions. Word has length 116 [2023-04-03 03:01:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:01:59,743 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 1678 transitions. [2023-04-03 03:01:59,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 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 03:01:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1678 transitions. [2023-04-03 03:01:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-03 03:01:59,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:01:59,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:01:59,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-03 03:01:59,744 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:01:59,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:01:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2058244633, now seen corresponding path program 1 times [2023-04-03 03:01:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:01:59,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787257180] [2023-04-03 03:01:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:01:59,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:01:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 03:02:00,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:00,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787257180] [2023-04-03 03:02:00,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787257180] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:02:00,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:02:00,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-03 03:02:00,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041497270] [2023-04-03 03:02:00,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:02:00,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-03 03:02:00,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:02:00,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-03 03:02:00,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:02:00,534 INFO L87 Difference]: Start difference. First operand 1332 states and 1678 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:04,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:02:04,852 INFO L93 Difference]: Finished difference Result 3821 states and 4847 transitions. [2023-04-03 03:02:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:02:04,853 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2023-04-03 03:02:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:02:04,857 INFO L225 Difference]: With dead ends: 3821 [2023-04-03 03:02:04,857 INFO L226 Difference]: Without dead ends: 2584 [2023-04-03 03:02:04,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2023-04-03 03:02:04,859 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 410 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:02:04,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1607 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:02:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2023-04-03 03:02:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1342. [2023-04-03 03:02:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1338 states have (on average 1.2600896860986548) internal successors, (1686), 1338 states have internal predecessors, (1686), 2 states have call successors, (2), 2 states 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 03:02:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1689 transitions. [2023-04-03 03:02:06,562 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1689 transitions. Word has length 117 [2023-04-03 03:02:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:02:06,562 INFO L495 AbstractCegarLoop]: Abstraction has 1342 states and 1689 transitions. [2023-04-03 03:02:06,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:02:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1689 transitions. [2023-04-03 03:02:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-03 03:02:06,563 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:02:06,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:02:06,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-03 03:02:06,564 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-03 03:02:06,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:02:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash -100032981, now seen corresponding path program 1 times [2023-04-03 03:02:06,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:02:06,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953961074] [2023-04-03 03:02:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:06,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:02:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:02:10,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:02:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953961074] [2023-04-03 03:02:10,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953961074] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 03:02:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081766386] [2023-04-03 03:02:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:02:10,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 03:02:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:02:10,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 03:02:10,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 03:02:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:02:10,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 84 conjunts are in the unsatisfiable core [2023-04-03 03:02:10,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 03:02:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:02:23,141 INFO L327 TraceCheckSpWp]: Computing backward predicates...