/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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:39:45,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:39:45,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:39:45,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:39:45,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:39:45,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:39:45,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:39:45,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:39:45,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:39:45,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:39:45,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:39:45,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-03 02:39:45,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:39:45,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:39:45,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:39:45,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:39:45,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:39:45,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:39:45,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:39:45,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:39:45,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:39:45,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:39:45,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:39:45,832 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 02:39:45,857 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:39:45,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:39:45,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:39:45,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:39:45,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:39:45,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:39:45,859 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:39:45,859 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:39:45,859 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:39:45,859 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:39:45,860 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:39:45,860 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:39:45,860 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:39:45,860 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:39:45,860 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:39:45,861 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:39:45,861 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:39:45,861 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:39:45,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:39:45,861 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:39:45,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:39:45,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:39:45,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:39:45,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:39:45,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:39:45,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:39:45,862 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:39:45,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:39:45,862 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:39:45,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:39:45,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:39:45,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:39:45,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:39:45,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:39:46,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:39:46,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:39:46,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:39:46,046 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:39:46,047 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:39:46,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 02:39:47,020 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:39:47,429 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:39:47,429 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 02:39:47,467 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ca7fd99/8e4f1f81fb15415ea125b5a96e72788a/FLAGd919b6ced [2023-04-03 02:39:47,480 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ca7fd99/8e4f1f81fb15415ea125b5a96e72788a [2023-04-03 02:39:47,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:39:47,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:39:47,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:39:47,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:39:47,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:39:47,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:39:47" (1/1) ... [2023-04-03 02:39:47,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41cc1239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:47, skipping insertion in model container [2023-04-03 02:39:47,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:39:47" (1/1) ... [2023-04-03 02:39:47,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:39:47,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:39:48,011 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32670,32683] [2023-04-03 02:39:48,039 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39748,39761] [2023-04-03 02:39:48,108 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66949,66962] [2023-04-03 02:39:48,122 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[76032,76045] [2023-04-03 02:39:48,149 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82743,82756] [2023-04-03 02:39:48,167 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94707,94720] [2023-04-03 02:39:48,190 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103680,103693] [2023-04-03 02:39:48,202 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111745,111758] [2023-04-03 02:39:48,286 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[150437,150450] [2023-04-03 02:39:48,291 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153987,154000] [2023-04-03 02:39:48,308 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[163014,163027] [2023-04-03 02:39:48,318 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169687,169700] [2023-04-03 02:39:48,347 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[195501,195514] [2023-04-03 02:39:48,394 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[227497,227510] [2023-04-03 02:39:48,425 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[257825,257838] [2023-04-03 02:39:48,483 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[288277,288290] [2023-04-03 02:39:48,517 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[321714,321727] [2023-04-03 02:39:48,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:39:48,672 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:39:48,744 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32670,32683] [2023-04-03 02:39:48,752 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[39748,39761] [2023-04-03 02:39:48,777 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[66949,66962] [2023-04-03 02:39:48,787 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[76032,76045] [2023-04-03 02:39:48,794 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[82743,82756] [2023-04-03 02:39:48,807 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[94707,94720] [2023-04-03 02:39:48,817 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[103680,103693] [2023-04-03 02:39:48,825 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[111745,111758] [2023-04-03 02:39:48,862 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[150437,150450] [2023-04-03 02:39:48,866 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[153987,154000] [2023-04-03 02:39:48,877 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[163014,163027] [2023-04-03 02:39:48,884 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[169687,169700] [2023-04-03 02:39:48,910 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[195501,195514] [2023-04-03 02:39:48,979 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[227497,227510] [2023-04-03 02:39:49,010 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[257825,257838] [2023-04-03 02:39:49,043 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[288277,288290] [2023-04-03 02:39:49,081 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[321714,321727] [2023-04-03 02:39:49,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:39:49,238 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:39:49,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49 WrapperNode [2023-04-03 02:39:49,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:39:49,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:39:49,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:39:49,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:39:49,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,447 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:39:49,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:39:49,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:39:49,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:39:49,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (1/1) ... [2023-04-03 02:39:49,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:39:49,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:39:49,530 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 02:39:49,536 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 02:39:49,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:39:49,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:39:49,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:39:49,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:39:49,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:39:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:39:50,011 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:39:50,012 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:39:54,680 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:39:55,576 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:39:55,576 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:39:55,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:39:55 BoogieIcfgContainer [2023-04-03 02:39:55,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:39:55,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:39:55,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:39:55,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:39:55,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:39:47" (1/3) ... [2023-04-03 02:39:55,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67650a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:39:55, skipping insertion in model container [2023-04-03 02:39:55,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:39:49" (2/3) ... [2023-04-03 02:39:55,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67650a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:39:55, skipping insertion in model container [2023-04-03 02:39:55,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:39:55" (3/3) ... [2023-04-03 02:39:55,590 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-04-03 02:39:55,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:39:55,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-04-03 02:39:55,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:39:55,700 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;@349d46f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:39:55,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-04-03 02:39:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 3603 states, 3581 states have (on average 1.7807874895280649) internal successors, (6377), 3598 states have internal predecessors, (6377), 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 02:39:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:39:55,740 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:39:55,741 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 02:39:55,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:39:55,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:39:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1999218923, now seen corresponding path program 1 times [2023-04-03 02:39:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:39:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864999907] [2023-04-03 02:39:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:39:55,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:39:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:39:56,705 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 02:39:56,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:39:56,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864999907] [2023-04-03 02:39:56,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864999907] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:39:56,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:39:56,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:39:56,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510983435] [2023-04-03 02:39:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:39:56,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:39:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:39:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:39:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:39:56,753 INFO L87 Difference]: Start difference. First operand has 3603 states, 3581 states have (on average 1.7807874895280649) internal successors, (6377), 3598 states have internal predecessors, (6377), 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 13.0) internal successors, (65), 4 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 02:39:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:39:59,246 INFO L93 Difference]: Finished difference Result 6084 states and 10578 transitions. [2023-04-03 02:39:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:39:59,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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 02:39:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:39:59,285 INFO L225 Difference]: With dead ends: 6084 [2023-04-03 02:39:59,285 INFO L226 Difference]: Without dead ends: 3609 [2023-04-03 02:39:59,301 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 02:39:59,303 INFO L413 NwaCegarLoop]: 2824 mSDtfsCounter, 17031 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17031 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:39:59,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17031 Valid, 3590 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 02:39:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2023-04-03 02:39:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 3589. [2023-04-03 02:39:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 3569 states have (on average 1.2877556738582236) internal successors, (4596), 3585 states have internal predecessors, (4596), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:39:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 4599 transitions. [2023-04-03 02:39:59,446 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 4599 transitions. Word has length 68 [2023-04-03 02:39:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:39:59,446 INFO L495 AbstractCegarLoop]: Abstraction has 3589 states and 4599 transitions. [2023-04-03 02:39:59,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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 02:39:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 4599 transitions. [2023-04-03 02:39:59,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:39:59,452 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:39:59,453 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 02:39:59,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:39:59,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:39:59,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:39:59,454 INFO L85 PathProgramCache]: Analyzing trace with hash 856841760, now seen corresponding path program 1 times [2023-04-03 02:39:59,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:39:59,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140213546] [2023-04-03 02:39:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:39:59,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:39:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:39:59,739 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 02:39:59,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:39:59,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140213546] [2023-04-03 02:39:59,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140213546] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:39:59,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:39:59,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:39:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370294887] [2023-04-03 02:39:59,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:39:59,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:39:59,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:39:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:39:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:39:59,742 INFO L87 Difference]: Start difference. First operand 3589 states and 4599 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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 02:40:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:01,780 INFO L93 Difference]: Finished difference Result 6956 states and 8888 transitions. [2023-04-03 02:40:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:40:01,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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 02:40:01,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:01,796 INFO L225 Difference]: With dead ends: 6956 [2023-04-03 02:40:01,796 INFO L226 Difference]: Without dead ends: 4813 [2023-04-03 02:40:01,801 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 02:40:01,802 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 11874 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11874 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:01,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11874 Valid, 2223 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-03 02:40:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2023-04-03 02:40:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 4788. [2023-04-03 02:40:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4788 states, 4768 states have (on average 1.2751677852348993) internal successors, (6080), 4784 states have internal predecessors, (6080), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 6083 transitions. [2023-04-03 02:40:01,972 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 6083 transitions. Word has length 68 [2023-04-03 02:40:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:01,973 INFO L495 AbstractCegarLoop]: Abstraction has 4788 states and 6083 transitions. [2023-04-03 02:40:01,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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 02:40:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 6083 transitions. [2023-04-03 02:40:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-03 02:40:01,979 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:01,979 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 02:40:01,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:40:01,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:01,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:01,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2108520693, now seen corresponding path program 1 times [2023-04-03 02:40:01,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:01,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5411716] [2023-04-03 02:40:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:01,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:02,353 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 02:40:02,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5411716] [2023-04-03 02:40:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5411716] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:02,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:40:02,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401375875] [2023-04-03 02:40:02,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:02,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:40:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:40:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:40:02,355 INFO L87 Difference]: Start difference. First operand 4788 states and 6083 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:04,036 INFO L93 Difference]: Finished difference Result 9619 states and 12160 transitions. [2023-04-03 02:40:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:40:04,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-03 02:40:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:04,056 INFO L225 Difference]: With dead ends: 9619 [2023-04-03 02:40:04,057 INFO L226 Difference]: Without dead ends: 6530 [2023-04-03 02:40:04,065 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 02:40:04,065 INFO L413 NwaCegarLoop]: 1432 mSDtfsCounter, 10274 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10274 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:04,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10274 Valid, 1989 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 02:40:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2023-04-03 02:40:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 6500. [2023-04-03 02:40:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6500 states, 6480 states have (on average 1.2689814814814815) internal successors, (8223), 6496 states have internal predecessors, (8223), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6500 states to 6500 states and 8226 transitions. [2023-04-03 02:40:04,335 INFO L78 Accepts]: Start accepts. Automaton has 6500 states and 8226 transitions. Word has length 69 [2023-04-03 02:40:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:04,336 INFO L495 AbstractCegarLoop]: Abstraction has 6500 states and 8226 transitions. [2023-04-03 02:40:04,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand 6500 states and 8226 transitions. [2023-04-03 02:40:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 02:40:04,342 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:04,343 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 02:40:04,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:40:04,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:04,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2006184660, now seen corresponding path program 1 times [2023-04-03 02:40:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:04,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535231366] [2023-04-03 02:40:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:04,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:04,635 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 02:40:04,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535231366] [2023-04-03 02:40:04,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535231366] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:04,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:04,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:40:04,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574038611] [2023-04-03 02:40:04,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:04,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:40:04,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:04,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:40:04,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:40:04,638 INFO L87 Difference]: Start difference. First operand 6500 states and 8226 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 02:40:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:06,108 INFO L93 Difference]: Finished difference Result 12432 states and 15790 transitions. [2023-04-03 02:40:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:40:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 02:40:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:06,132 INFO L225 Difference]: With dead ends: 12432 [2023-04-03 02:40:06,132 INFO L226 Difference]: Without dead ends: 8284 [2023-04-03 02:40:06,141 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 02:40:06,142 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 8705 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8705 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:06,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8705 Valid, 1733 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 02:40:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2023-04-03 02:40:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8244. [2023-04-03 02:40:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8244 states, 8224 states have (on average 1.273589494163424) internal successors, (10474), 8240 states have internal predecessors, (10474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8244 states to 8244 states and 10477 transitions. [2023-04-03 02:40:06,607 INFO L78 Accepts]: Start accepts. Automaton has 8244 states and 10477 transitions. Word has length 70 [2023-04-03 02:40:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:06,607 INFO L495 AbstractCegarLoop]: Abstraction has 8244 states and 10477 transitions. [2023-04-03 02:40:06,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 02:40:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 8244 states and 10477 transitions. [2023-04-03 02:40:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:40:06,615 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:06,615 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 02:40:06,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:40:06,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:06,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 904591430, now seen corresponding path program 1 times [2023-04-03 02:40:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:06,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085069542] [2023-04-03 02:40:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:07,265 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 02:40:07,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085069542] [2023-04-03 02:40:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085069542] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:07,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:07,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:40:07,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334156017] [2023-04-03 02:40:07,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:40:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:40:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:40:07,266 INFO L87 Difference]: Start difference. First operand 8244 states and 10477 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 02:40:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:11,283 INFO L93 Difference]: Finished difference Result 14045 states and 18115 transitions. [2023-04-03 02:40:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:40:11,295 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 02:40:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:11,324 INFO L225 Difference]: With dead ends: 14045 [2023-04-03 02:40:11,324 INFO L226 Difference]: Without dead ends: 13029 [2023-04-03 02:40:11,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:40:11,331 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 14288 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 6373 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14288 SdHoareTripleChecker+Valid, 6028 SdHoareTripleChecker+Invalid, 6516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 6373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:11,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14288 Valid, 6028 Invalid, 6516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 6373 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-03 02:40:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13029 states. [2023-04-03 02:40:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13029 to 8194. [2023-04-03 02:40:11,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8194 states, 8174 states have (on average 1.2734279422559334) internal successors, (10409), 8190 states have internal predecessors, (10409), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8194 states to 8194 states and 10412 transitions. [2023-04-03 02:40:11,958 INFO L78 Accepts]: Start accepts. Automaton has 8194 states and 10412 transitions. Word has length 71 [2023-04-03 02:40:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:11,958 INFO L495 AbstractCegarLoop]: Abstraction has 8194 states and 10412 transitions. [2023-04-03 02:40:11,958 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 02:40:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 8194 states and 10412 transitions. [2023-04-03 02:40:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:40:11,965 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:11,965 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 02:40:11,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:40:11,966 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:11,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1977940664, now seen corresponding path program 1 times [2023-04-03 02:40:11,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:11,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673621766] [2023-04-03 02:40:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:11,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:40:12,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:12,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673621766] [2023-04-03 02:40:12,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673621766] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:12,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:12,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 02:40:12,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276810020] [2023-04-03 02:40:12,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:12,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 02:40:12,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:12,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 02:40:12,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:40:12,540 INFO L87 Difference]: Start difference. First operand 8194 states and 10412 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 02:40:15,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:15,766 INFO L93 Difference]: Finished difference Result 14080 states and 18481 transitions. [2023-04-03 02:40:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:40:15,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 02:40:15,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:15,796 INFO L225 Difference]: With dead ends: 14080 [2023-04-03 02:40:15,797 INFO L226 Difference]: Without dead ends: 12954 [2023-04-03 02:40:15,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-04-03 02:40:15,808 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 8496 mSDsluCounter, 4455 mSDsCounter, 0 mSdLazyCounter, 5202 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8496 SdHoareTripleChecker+Valid, 5785 SdHoareTripleChecker+Invalid, 5224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:15,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8496 Valid, 5785 Invalid, 5224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 5202 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 02:40:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12954 states. [2023-04-03 02:40:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12954 to 8050. [2023-04-03 02:40:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8050 states, 8030 states have (on average 1.273225404732254) internal successors, (10224), 8046 states have internal predecessors, (10224), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8050 states to 8050 states and 10227 transitions. [2023-04-03 02:40:16,371 INFO L78 Accepts]: Start accepts. Automaton has 8050 states and 10227 transitions. Word has length 71 [2023-04-03 02:40:16,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:16,371 INFO L495 AbstractCegarLoop]: Abstraction has 8050 states and 10227 transitions. [2023-04-03 02:40:16,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 02:40:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8050 states and 10227 transitions. [2023-04-03 02:40:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:40:16,378 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:16,378 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 02:40:16,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:40:16,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:16,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2123913326, now seen corresponding path program 1 times [2023-04-03 02:40:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:16,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080776665] [2023-04-03 02:40:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:16,976 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 02:40:16,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:16,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080776665] [2023-04-03 02:40:16,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080776665] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:16,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:16,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:40:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533516990] [2023-04-03 02:40:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:16,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:40:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:40:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:40:16,978 INFO L87 Difference]: Start difference. First operand 8050 states and 10227 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:19,783 INFO L93 Difference]: Finished difference Result 9391 states and 11935 transitions. [2023-04-03 02:40:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 02:40:19,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:40:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:19,796 INFO L225 Difference]: With dead ends: 9391 [2023-04-03 02:40:19,797 INFO L226 Difference]: Without dead ends: 9385 [2023-04-03 02:40:19,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:40:19,801 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 12295 mSDsluCounter, 4121 mSDsCounter, 0 mSdLazyCounter, 4921 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12295 SdHoareTripleChecker+Valid, 5419 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:19,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12295 Valid, 5419 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4921 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-03 02:40:19,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9385 states. [2023-04-03 02:40:20,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9385 to 8050. [2023-04-03 02:40:20,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8050 states, 8030 states have (on average 1.2731008717310086) internal successors, (10223), 8046 states have internal predecessors, (10223), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8050 states to 8050 states and 10226 transitions. [2023-04-03 02:40:20,327 INFO L78 Accepts]: Start accepts. Automaton has 8050 states and 10226 transitions. Word has length 72 [2023-04-03 02:40:20,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:20,327 INFO L495 AbstractCegarLoop]: Abstraction has 8050 states and 10226 transitions. [2023-04-03 02:40:20,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 8050 states and 10226 transitions. [2023-04-03 02:40:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:40:20,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:20,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:20,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:40:20,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:20,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash 89514824, now seen corresponding path program 1 times [2023-04-03 02:40:20,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:20,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954165269] [2023-04-03 02:40:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:20,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:20,910 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 02:40:20,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:20,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954165269] [2023-04-03 02:40:20,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954165269] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:20,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:20,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:40:20,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486282455] [2023-04-03 02:40:20,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:20,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:40:20,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:20,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:40:20,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:40:20,912 INFO L87 Difference]: Start difference. First operand 8050 states and 10226 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:24,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:24,198 INFO L93 Difference]: Finished difference Result 11175 states and 14262 transitions. [2023-04-03 02:40:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 02:40:24,199 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-03 02:40:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:24,217 INFO L225 Difference]: With dead ends: 11175 [2023-04-03 02:40:24,217 INFO L226 Difference]: Without dead ends: 11166 [2023-04-03 02:40:24,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2023-04-03 02:40:24,220 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 8630 mSDsluCounter, 4692 mSDsCounter, 0 mSdLazyCounter, 5700 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8630 SdHoareTripleChecker+Valid, 5963 SdHoareTripleChecker+Invalid, 5765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 5700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:24,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8630 Valid, 5963 Invalid, 5765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 5700 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 02:40:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11166 states. [2023-04-03 02:40:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11166 to 8050. [2023-04-03 02:40:24,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8050 states, 8030 states have (on average 1.2729763387297635) internal successors, (10222), 8046 states have internal predecessors, (10222), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8050 states to 8050 states and 10225 transitions. [2023-04-03 02:40:24,853 INFO L78 Accepts]: Start accepts. Automaton has 8050 states and 10225 transitions. Word has length 72 [2023-04-03 02:40:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:24,853 INFO L495 AbstractCegarLoop]: Abstraction has 8050 states and 10225 transitions. [2023-04-03 02:40:24,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 8050 states and 10225 transitions. [2023-04-03 02:40:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:40:24,860 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:24,860 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 02:40:24,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:40:24,861 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:24,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2090151674, now seen corresponding path program 1 times [2023-04-03 02:40:24,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:24,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292923231] [2023-04-03 02:40:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:24,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:25,741 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 02:40:25,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:25,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292923231] [2023-04-03 02:40:25,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292923231] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:25,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:25,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:40:25,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639826456] [2023-04-03 02:40:25,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:25,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:40:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:40:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:40:25,743 INFO L87 Difference]: Start difference. First operand 8050 states and 10225 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 02:40:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:28,897 INFO L93 Difference]: Finished difference Result 15022 states and 19789 transitions. [2023-04-03 02:40:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 02:40:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 02:40:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:28,920 INFO L225 Difference]: With dead ends: 15022 [2023-04-03 02:40:28,920 INFO L226 Difference]: Without dead ends: 14003 [2023-04-03 02:40:28,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:40:28,926 INFO L413 NwaCegarLoop]: 2386 mSDtfsCounter, 10268 mSDsluCounter, 6633 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10268 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:28,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10268 Valid, 9019 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 02:40:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14003 states. [2023-04-03 02:40:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14003 to 7993. [2023-04-03 02:40:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7993 states, 7974 states have (on average 1.2730122899423124) internal successors, (10151), 7989 states have internal predecessors, (10151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7993 states to 7993 states and 10154 transitions. [2023-04-03 02:40:29,824 INFO L78 Accepts]: Start accepts. Automaton has 7993 states and 10154 transitions. Word has length 72 [2023-04-03 02:40:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:29,824 INFO L495 AbstractCegarLoop]: Abstraction has 7993 states and 10154 transitions. [2023-04-03 02:40:29,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 02:40:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 7993 states and 10154 transitions. [2023-04-03 02:40:29,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 02:40:29,835 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:29,835 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 02:40:29,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:40:29,835 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr16ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:29,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1136952229, now seen corresponding path program 1 times [2023-04-03 02:40:29,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:29,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127156953] [2023-04-03 02:40:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:29,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:30,744 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 02:40:30,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:30,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127156953] [2023-04-03 02:40:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127156953] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:30,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:40:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916214829] [2023-04-03 02:40:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:30,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:40:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:40:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:40:30,747 INFO L87 Difference]: Start difference. First operand 7993 states and 10154 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 02:40:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:34,278 INFO L93 Difference]: Finished difference Result 12656 states and 16561 transitions. [2023-04-03 02:40:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:40:34,279 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 02:40:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:34,292 INFO L225 Difference]: With dead ends: 12656 [2023-04-03 02:40:34,292 INFO L226 Difference]: Without dead ends: 12652 [2023-04-03 02:40:34,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:40:34,294 INFO L413 NwaCegarLoop]: 2478 mSDtfsCounter, 13957 mSDsluCounter, 10775 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13957 SdHoareTripleChecker+Valid, 13253 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:34,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13957 Valid, 13253 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 02:40:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12652 states. [2023-04-03 02:40:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12652 to 7989. [2023-04-03 02:40:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7989 states, 7971 states have (on average 1.272989587253795) internal successors, (10147), 7985 states have internal predecessors, (10147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7989 states to 7989 states and 10150 transitions. [2023-04-03 02:40:35,354 INFO L78 Accepts]: Start accepts. Automaton has 7989 states and 10150 transitions. Word has length 72 [2023-04-03 02:40:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:35,355 INFO L495 AbstractCegarLoop]: Abstraction has 7989 states and 10150 transitions. [2023-04-03 02:40:35,355 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 02:40:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7989 states and 10150 transitions. [2023-04-03 02:40:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:40:35,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:35,361 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 02:40:35,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:40:35,361 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:35,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash -177643414, now seen corresponding path program 1 times [2023-04-03 02:40:35,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509952959] [2023-04-03 02:40:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:36,267 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 02:40:36,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:36,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509952959] [2023-04-03 02:40:36,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509952959] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:36,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:36,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:40:36,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105517316] [2023-04-03 02:40:36,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:36,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:40:36,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:36,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:40:36,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:40:36,269 INFO L87 Difference]: Start difference. First operand 7989 states and 10150 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 02:40:40,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:40,666 INFO L93 Difference]: Finished difference Result 13308 states and 17378 transitions. [2023-04-03 02:40:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:40:40,667 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 02:40:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:40,681 INFO L225 Difference]: With dead ends: 13308 [2023-04-03 02:40:40,681 INFO L226 Difference]: Without dead ends: 13299 [2023-04-03 02:40:40,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:40:40,683 INFO L413 NwaCegarLoop]: 2489 mSDtfsCounter, 14279 mSDsluCounter, 10944 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14279 SdHoareTripleChecker+Valid, 13433 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:40,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14279 Valid, 13433 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 02:40:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13299 states. [2023-04-03 02:40:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13299 to 7980. [2023-04-03 02:40:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7980 states, 7963 states have (on average 1.2730126836619364) internal successors, (10137), 7976 states have internal predecessors, (10137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7980 states to 7980 states and 10140 transitions. [2023-04-03 02:40:42,065 INFO L78 Accepts]: Start accepts. Automaton has 7980 states and 10140 transitions. Word has length 73 [2023-04-03 02:40:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:42,066 INFO L495 AbstractCegarLoop]: Abstraction has 7980 states and 10140 transitions. [2023-04-03 02:40:42,066 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 02:40:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7980 states and 10140 transitions. [2023-04-03 02:40:42,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:40:42,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:42,072 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 02:40:42,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:40:42,072 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:42,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash 381205113, now seen corresponding path program 1 times [2023-04-03 02:40:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:42,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828367503] [2023-04-03 02:40:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:42,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:42,936 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 02:40:42,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828367503] [2023-04-03 02:40:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828367503] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:42,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:40:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290965812] [2023-04-03 02:40:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:42,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:40:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:40:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:40:42,938 INFO L87 Difference]: Start difference. First operand 7980 states and 10140 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 02:40:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:49,331 INFO L93 Difference]: Finished difference Result 15345 states and 20061 transitions. [2023-04-03 02:40:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:40:49,332 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 02:40:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:49,348 INFO L225 Difference]: With dead ends: 15345 [2023-04-03 02:40:49,348 INFO L226 Difference]: Without dead ends: 15333 [2023-04-03 02:40:49,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:40:49,351 INFO L413 NwaCegarLoop]: 2562 mSDtfsCounter, 10812 mSDsluCounter, 13344 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10812 SdHoareTripleChecker+Valid, 15906 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:49,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10812 Valid, 15906 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-03 02:40:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15333 states. [2023-04-03 02:40:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15333 to 7973. [2023-04-03 02:40:50,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7973 states, 7956 states have (on average 1.2731271995977878) internal successors, (10129), 7969 states have internal predecessors, (10129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 10132 transitions. [2023-04-03 02:40:50,901 INFO L78 Accepts]: Start accepts. Automaton has 7973 states and 10132 transitions. Word has length 73 [2023-04-03 02:40:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:50,901 INFO L495 AbstractCegarLoop]: Abstraction has 7973 states and 10132 transitions. [2023-04-03 02:40:50,901 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 02:40:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7973 states and 10132 transitions. [2023-04-03 02:40:50,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 02:40:50,906 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:50,907 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, 1, 1, 1, 1] [2023-04-03 02:40:50,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:40:50,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:50,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:50,907 INFO L85 PathProgramCache]: Analyzing trace with hash -307884139, now seen corresponding path program 1 times [2023-04-03 02:40:50,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:50,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088627641] [2023-04-03 02:40:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:51,074 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 02:40:51,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:51,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088627641] [2023-04-03 02:40:51,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088627641] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:51,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:51,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:40:51,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264202629] [2023-04-03 02:40:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:51,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:40:51,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:51,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:40:51,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:40:51,076 INFO L87 Difference]: Start difference. First operand 7973 states and 10132 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 02:40:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:40:52,906 INFO L93 Difference]: Finished difference Result 11284 states and 14489 transitions. [2023-04-03 02:40:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:40:52,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 02:40:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:40:52,944 INFO L225 Difference]: With dead ends: 11284 [2023-04-03 02:40:52,945 INFO L226 Difference]: Without dead ends: 6998 [2023-04-03 02:40:52,950 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 02:40:52,950 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 1772 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:40:52,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 2393 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:40:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6998 states. [2023-04-03 02:40:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6998 to 6979. [2023-04-03 02:40:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6966 states have (on average 1.2803617571059431) internal successors, (8919), 6975 states have internal predecessors, (8919), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:40:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 8922 transitions. [2023-04-03 02:40:54,602 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 8922 transitions. Word has length 73 [2023-04-03 02:40:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:40:54,603 INFO L495 AbstractCegarLoop]: Abstraction has 6979 states and 8922 transitions. [2023-04-03 02:40:54,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 02:40:54,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 8922 transitions. [2023-04-03 02:40:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:40:54,607 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:40:54,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:40:54,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:40:54,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:40:54,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:40:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash 202463349, now seen corresponding path program 1 times [2023-04-03 02:40:54,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:40:54,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987930813] [2023-04-03 02:40:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:40:54,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:40:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:40:55,172 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 02:40:55,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:40:55,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987930813] [2023-04-03 02:40:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987930813] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:40:55,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:40:55,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:40:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080793909] [2023-04-03 02:40:55,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:40:55,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:40:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:40:55,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:40:55,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:40:55,173 INFO L87 Difference]: Start difference. First operand 6979 states and 8922 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:41:01,673 INFO L93 Difference]: Finished difference Result 14268 states and 18653 transitions. [2023-04-03 02:41:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:41:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-03 02:41:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:41:01,687 INFO L225 Difference]: With dead ends: 14268 [2023-04-03 02:41:01,687 INFO L226 Difference]: Without dead ends: 12771 [2023-04-03 02:41:01,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:41:01,690 INFO L413 NwaCegarLoop]: 1111 mSDtfsCounter, 10718 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 4894 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10718 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 5012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 4894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:41:01,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10718 Valid, 4669 Invalid, 5012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 4894 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-03 02:41:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2023-04-03 02:41:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 6979. [2023-04-03 02:41:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6966 states have (on average 1.280218202698823) internal successors, (8918), 6975 states have internal predecessors, (8918), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 8921 transitions. [2023-04-03 02:41:03,409 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 8921 transitions. Word has length 74 [2023-04-03 02:41:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:41:03,409 INFO L495 AbstractCegarLoop]: Abstraction has 6979 states and 8921 transitions. [2023-04-03 02:41:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:41:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 8921 transitions. [2023-04-03 02:41:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:41:03,414 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:41:03,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:41:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 02:41:03,414 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:41:03,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:41:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash 328240968, now seen corresponding path program 1 times [2023-04-03 02:41:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:41:03,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581666485] [2023-04-03 02:41:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:41:03,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:41:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:41:06,185 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 02:41:06,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:41:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581666485] [2023-04-03 02:41:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581666485] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:41:06,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:41:06,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-03 02:41:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472596706] [2023-04-03 02:41:06,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:41:06,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-03 02:41:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:41:06,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-03 02:41:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:41:06,187 INFO L87 Difference]: Start difference. First operand 6979 states and 8921 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 24 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:01,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:01,205 INFO L93 Difference]: Finished difference Result 23692 states and 31360 transitions. [2023-04-03 02:42:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-04-03 02:42:01,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 24 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-03 02:42:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:01,227 INFO L225 Difference]: With dead ends: 23692 [2023-04-03 02:42:01,227 INFO L226 Difference]: Without dead ends: 16964 [2023-04-03 02:42:01,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7285 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=3452, Invalid=16288, Unknown=0, NotChecked=0, Total=19740 [2023-04-03 02:42:01,239 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 24834 mSDsluCounter, 12974 mSDsCounter, 0 mSdLazyCounter, 19058 mSolverCounterSat, 894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24834 SdHoareTripleChecker+Valid, 13829 SdHoareTripleChecker+Invalid, 19952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 19058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:01,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24834 Valid, 13829 Invalid, 19952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [894 Valid, 19058 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-04-03 02:42:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16964 states. [2023-04-03 02:42:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16964 to 8102. [2023-04-03 02:42:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8102 states, 8092 states have (on average 1.2850963914977755) internal successors, (10399), 8098 states have internal predecessors, (10399), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8102 states to 8102 states and 10402 transitions. [2023-04-03 02:42:05,458 INFO L78 Accepts]: Start accepts. Automaton has 8102 states and 10402 transitions. Word has length 74 [2023-04-03 02:42:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:05,459 INFO L495 AbstractCegarLoop]: Abstraction has 8102 states and 10402 transitions. [2023-04-03 02:42:05,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 24 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 8102 states and 10402 transitions. [2023-04-03 02:42:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:42:05,463 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:05,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:42:05,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 02:42:05,463 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:42:05,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash 317348818, now seen corresponding path program 1 times [2023-04-03 02:42:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:05,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468774442] [2023-04-03 02:42:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:05,970 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 02:42:05,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:05,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468774442] [2023-04-03 02:42:05,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468774442] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:05,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:05,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:42:05,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283288910] [2023-04-03 02:42:05,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:05,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:42:05,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:42:05,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:42:05,974 INFO L87 Difference]: Start difference. First operand 8102 states and 10402 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:15,305 INFO L93 Difference]: Finished difference Result 13540 states and 17761 transitions. [2023-04-03 02:42:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:42:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-03 02:42:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:15,319 INFO L225 Difference]: With dead ends: 13540 [2023-04-03 02:42:15,320 INFO L226 Difference]: Without dead ends: 12063 [2023-04-03 02:42:15,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:42:15,324 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 7223 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7223 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:15,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7223 Valid, 3579 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 02:42:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12063 states. [2023-04-03 02:42:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12063 to 8102. [2023-04-03 02:42:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8102 states, 8092 states have (on average 1.2849728126544735) internal successors, (10398), 8098 states have internal predecessors, (10398), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8102 states to 8102 states and 10401 transitions. [2023-04-03 02:42:19,945 INFO L78 Accepts]: Start accepts. Automaton has 8102 states and 10401 transitions. Word has length 74 [2023-04-03 02:42:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:19,945 INFO L495 AbstractCegarLoop]: Abstraction has 8102 states and 10401 transitions. [2023-04-03 02:42:19,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8102 states and 10401 transitions. [2023-04-03 02:42:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:42:19,950 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:19,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:42:19,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 02:42:19,950 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:42:19,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:19,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1507347890, now seen corresponding path program 1 times [2023-04-03 02:42:19,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:19,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130381120] [2023-04-03 02:42:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:19,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:20,482 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 02:42:20,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130381120] [2023-04-03 02:42:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130381120] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:20,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:20,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 02:42:20,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394959607] [2023-04-03 02:42:20,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:20,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 02:42:20,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:20,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 02:42:20,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:42:20,487 INFO L87 Difference]: Start difference. First operand 8102 states and 10401 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:30,896 INFO L93 Difference]: Finished difference Result 16704 states and 22190 transitions. [2023-04-03 02:42:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 02:42:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-03 02:42:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:30,915 INFO L225 Difference]: With dead ends: 16704 [2023-04-03 02:42:30,915 INFO L226 Difference]: Without dead ends: 13682 [2023-04-03 02:42:30,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:42:30,922 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 7108 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7108 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:30,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7108 Valid, 2469 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 02:42:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13682 states. [2023-04-03 02:42:35,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13682 to 7548. [2023-04-03 02:42:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7548 states, 7538 states have (on average 1.2884054125762803) internal successors, (9712), 7544 states have internal predecessors, (9712), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:35,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 9715 transitions. [2023-04-03 02:42:35,080 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 9715 transitions. Word has length 74 [2023-04-03 02:42:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:35,080 INFO L495 AbstractCegarLoop]: Abstraction has 7548 states and 9715 transitions. [2023-04-03 02:42:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:35,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 9715 transitions. [2023-04-03 02:42:35,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 02:42:35,085 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:35,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:42:35,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 02:42:35,085 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:42:35,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1371138795, now seen corresponding path program 1 times [2023-04-03 02:42:35,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:35,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452574614] [2023-04-03 02:42:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:35,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:35,212 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 02:42:35,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:35,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452574614] [2023-04-03 02:42:35,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452574614] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:35,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:35,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:42:35,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613499037] [2023-04-03 02:42:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:35,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:42:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:42:35,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:42:35,214 INFO L87 Difference]: Start difference. First operand 7548 states and 9715 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 02:42:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:41,049 INFO L93 Difference]: Finished difference Result 12291 states and 16272 transitions. [2023-04-03 02:42:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:42:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 75 [2023-04-03 02:42:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:41,080 INFO L225 Difference]: With dead ends: 12291 [2023-04-03 02:42:41,080 INFO L226 Difference]: Without dead ends: 8255 [2023-04-03 02:42:41,084 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 02:42:41,085 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 863 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:41,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1904 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:42:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2023-04-03 02:42:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 7178. [2023-04-03 02:42:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7178 states, 7168 states have (on average 1.2991071428571428) internal successors, (9312), 7174 states have internal predecessors, (9312), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 9315 transitions. [2023-04-03 02:42:45,936 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 9315 transitions. Word has length 75 [2023-04-03 02:42:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:45,936 INFO L495 AbstractCegarLoop]: Abstraction has 7178 states and 9315 transitions. [2023-04-03 02:42:45,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 02:42:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 9315 transitions. [2023-04-03 02:42:45,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 02:42:45,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:45,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:42:45,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 02:42:45,939 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:42:45,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1005202253, now seen corresponding path program 1 times [2023-04-03 02:42:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:45,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319560500] [2023-04-03 02:42:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:45,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:42:46,079 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 02:42:46,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:42:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319560500] [2023-04-03 02:42:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319560500] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:42:46,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:42:46,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:42:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71018954] [2023-04-03 02:42:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:42:46,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:42:46,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:42:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:42:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:42:46,081 INFO L87 Difference]: Start difference. First operand 7178 states and 9315 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 02:42:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:42:53,285 INFO L93 Difference]: Finished difference Result 13573 states and 18147 transitions. [2023-04-03 02:42:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:42:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 75 [2023-04-03 02:42:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:42:53,296 INFO L225 Difference]: With dead ends: 13573 [2023-04-03 02:42:53,296 INFO L226 Difference]: Without dead ends: 9430 [2023-04-03 02:42:53,301 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 02:42:53,302 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 794 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:42:53,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1958 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:42:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9430 states. [2023-04-03 02:42:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9430 to 8591. [2023-04-03 02:42:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8581 states have (on average 1.3160470807598181) internal successors, (11293), 8587 states have internal predecessors, (11293), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:42:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 11296 transitions. [2023-04-03 02:42:59,896 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 11296 transitions. Word has length 75 [2023-04-03 02:42:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:42:59,896 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 11296 transitions. [2023-04-03 02:42:59,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 02:42:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 11296 transitions. [2023-04-03 02:42:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 02:42:59,899 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:42:59,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:42:59,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 02:42:59,899 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:42:59,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:42:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash -464403955, now seen corresponding path program 1 times [2023-04-03 02:42:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:42:59,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789906194] [2023-04-03 02:42:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:42:59,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:42:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:43:00,022 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 02:43:00,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:43:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789906194] [2023-04-03 02:43:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789906194] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:43:00,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:43:00,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:43:00,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919204879] [2023-04-03 02:43:00,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:43:00,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:43:00,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:43:00,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:43:00,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:43:00,024 INFO L87 Difference]: Start difference. First operand 8591 states and 11296 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 02:43:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:43:10,749 INFO L93 Difference]: Finished difference Result 18324 states and 24578 transitions. [2023-04-03 02:43:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:43:10,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 75 [2023-04-03 02:43:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:43:10,763 INFO L225 Difference]: With dead ends: 18324 [2023-04-03 02:43:10,763 INFO L226 Difference]: Without dead ends: 11808 [2023-04-03 02:43:10,770 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 02:43:10,771 INFO L413 NwaCegarLoop]: 1280 mSDtfsCounter, 766 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:43:10,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1807 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:43:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11808 states. [2023-04-03 02:43:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11808 to 10312. [2023-04-03 02:43:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 10302 states have (on average 1.3145991069695204) internal successors, (13543), 10308 states have internal predecessors, (13543), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 13546 transitions. [2023-04-03 02:43:20,661 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 13546 transitions. Word has length 75 [2023-04-03 02:43:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:43:20,661 INFO L495 AbstractCegarLoop]: Abstraction has 10312 states and 13546 transitions. [2023-04-03 02:43:20,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 02:43:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 13546 transitions. [2023-04-03 02:43:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:43:20,664 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:43:20,664 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] [2023-04-03 02:43:20,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 02:43:20,664 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2023-04-03 02:43:20,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:43:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1324005614, now seen corresponding path program 1 times [2023-04-03 02:43:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:43:20,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112166506] [2023-04-03 02:43:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:43:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:43:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:43:21,177 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 02:43:21,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:43:21,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112166506] [2023-04-03 02:43:21,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112166506] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:43:21,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:43:21,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:43:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561362373] [2023-04-03 02:43:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:43:21,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:43:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:43:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:43:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:43:21,179 INFO L87 Difference]: Start difference. First operand 10312 states and 13546 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:43:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:43:46,876 INFO L93 Difference]: Finished difference Result 23539 states and 31231 transitions. [2023-04-03 02:43:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 02:43:46,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (2), 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 77 [2023-04-03 02:43:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:43:46,903 INFO L225 Difference]: With dead ends: 23539 [2023-04-03 02:43:46,903 INFO L226 Difference]: Without dead ends: 22689 [2023-04-03 02:43:46,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2023-04-03 02:43:46,908 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 4245 mSDsluCounter, 3573 mSDsCounter, 0 mSdLazyCounter, 4071 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 4445 SdHoareTripleChecker+Invalid, 4135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 4071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:43:46,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4245 Valid, 4445 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 4071 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-03 02:43:46,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22689 states.