/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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:41:23,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:41:23,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:41:23,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 06:41:23,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:41:23,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:41:23,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:41:23,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:41:23,910 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:41:23,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:41:23,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:41:23,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:41:23,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:41:23,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:41:23,912 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:41:23,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:41:23,912 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:41:23,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:41:23,918 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:41:23,918 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:41:23,918 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:41:23,918 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:41:23,918 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:41:23,919 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:41:23,919 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:41:23,919 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:41:23,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:41:23,919 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:41:23,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:41:23,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:41:23,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:41:23,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:41:23,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:41:23,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:41:23,921 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:41:23,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:41:23,921 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:41:23,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:41:23,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:41:23,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:41:23,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:41:23,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:41:23,922 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:41:23,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:41:23,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:41:23,922 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:41:23,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:41:23,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:41:23,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:41:23,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:41:24,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:41:24,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:41:24,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:41:24,156 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:41:24,157 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:41:24,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:41:25,292 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:41:25,667 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:41:25,668 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:41:25,697 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9870b22/3789aba0748b454196a646065b1cdcda/FLAGfe6bc8c00 [2023-04-01 06:41:25,714 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9870b22/3789aba0748b454196a646065b1cdcda [2023-04-01 06:41:25,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:41:25,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:41:25,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:41:25,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:41:25,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:41:25,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:41:25" (1/1) ... [2023-04-01 06:41:25,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55349a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:25, skipping insertion in model container [2023-04-01 06:41:25,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:41:25" (1/1) ... [2023-04-01 06:41:25,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:41:25,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:41:26,252 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2023-04-01 06:41:26,300 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2023-04-01 06:41:26,315 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2023-04-01 06:41:26,320 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2023-04-01 06:41:26,333 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2023-04-01 06:41:26,338 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2023-04-01 06:41:26,353 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2023-04-01 06:41:26,371 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2023-04-01 06:41:26,375 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2023-04-01 06:41:26,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2023-04-01 06:41:26,395 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2023-04-01 06:41:26,414 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2023-04-01 06:41:26,423 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2023-04-01 06:41:26,433 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2023-04-01 06:41:26,443 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2023-04-01 06:41:26,461 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2023-04-01 06:41:26,487 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2023-04-01 06:41:26,491 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2023-04-01 06:41:26,513 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2023-04-01 06:41:26,520 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2023-04-01 06:41:26,532 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2023-04-01 06:41:26,555 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2023-04-01 06:41:26,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:41:26,801 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:41:26,889 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2023-04-01 06:41:26,915 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2023-04-01 06:41:26,927 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2023-04-01 06:41:26,936 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2023-04-01 06:41:26,949 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2023-04-01 06:41:26,958 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2023-04-01 06:41:26,968 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2023-04-01 06:41:26,975 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2023-04-01 06:41:26,978 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2023-04-01 06:41:26,982 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2023-04-01 06:41:26,988 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2023-04-01 06:41:26,998 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2023-04-01 06:41:27,001 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2023-04-01 06:41:27,005 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2023-04-01 06:41:27,010 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2023-04-01 06:41:27,020 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2023-04-01 06:41:27,049 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2023-04-01 06:41:27,052 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2023-04-01 06:41:27,062 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2023-04-01 06:41:27,068 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2023-04-01 06:41:27,076 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2023-04-01 06:41:27,090 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.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2023-04-01 06:41:27,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:41:27,275 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:41:27,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27 WrapperNode [2023-04-01 06:41:27,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:41:27,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:41:27,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:41:27,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:41:27,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:41:27,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:41:27,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:41:27,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:41:27,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (1/1) ... [2023-04-01 06:41:27,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:41:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:41:27,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:41:27,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:41:27,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:41:27,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:41:27,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:41:27,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:41:27,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:41:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:41:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:41:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:41:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:41:27,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:41:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:41:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 06:41:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:41:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:41:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:41:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:41:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:41:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:41:27,570 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:41:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:41:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:41:27,892 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:41:27,894 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:41:30,325 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:41:30,487 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:41:30,488 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:41:30,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:41:30 BoogieIcfgContainer [2023-04-01 06:41:30,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:41:30,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:41:30,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:41:30,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:41:30,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:41:25" (1/3) ... [2023-04-01 06:41:30,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e688c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:41:30, skipping insertion in model container [2023-04-01 06:41:30,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:41:27" (2/3) ... [2023-04-01 06:41:30,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e688c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:41:30, skipping insertion in model container [2023-04-01 06:41:30,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:41:30" (3/3) ... [2023-04-01 06:41:30,499 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:41:30,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:41:30,515 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-04-01 06:41:30,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:41:30,582 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;@42281d60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:41:30,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-04-01 06:41:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 1094 states, 1066 states have (on average 1.8639774859287055) internal successors, (1987), 1089 states have internal predecessors, (1987), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:41:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 06:41:30,612 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:30,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:30,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:30,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash 163065747, now seen corresponding path program 1 times [2023-04-01 06:41:30,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:30,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355921300] [2023-04-01 06:41:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:30,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:31,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:31,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355921300] [2023-04-01 06:41:31,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355921300] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:31,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:31,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:41:31,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722536969] [2023-04-01 06:41:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:31,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:41:31,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:31,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:41:31,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:41:31,432 INFO L87 Difference]: Start difference. First operand has 1094 states, 1066 states have (on average 1.8639774859287055) internal successors, (1987), 1089 states have internal predecessors, (1987), 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 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:32,177 INFO L93 Difference]: Finished difference Result 1641 states and 2883 transitions. [2023-04-01 06:41:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:41:32,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (2), 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 88 [2023-04-01 06:41:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:32,194 INFO L225 Difference]: With dead ends: 1641 [2023-04-01 06:41:32,194 INFO L226 Difference]: Without dead ends: 839 [2023-04-01 06:41:32,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:41:32,203 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 4308 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:32,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4308 Valid, 1020 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:41:32,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-04-01 06:41:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2023-04-01 06:41:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 814 states have (on average 1.300982800982801) internal successors, (1059), 835 states have internal predecessors, (1059), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:32,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1062 transitions. [2023-04-01 06:41:32,282 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1062 transitions. Word has length 88 [2023-04-01 06:41:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:32,283 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1062 transitions. [2023-04-01 06:41:32,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1062 transitions. [2023-04-01 06:41:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-01 06:41:32,287 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:32,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:32,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:41:32,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:32,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1903552170, now seen corresponding path program 1 times [2023-04-01 06:41:32,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:32,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357310804] [2023-04-01 06:41:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:32,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:32,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357310804] [2023-04-01 06:41:32,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357310804] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:32,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:32,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:41:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130298627] [2023-04-01 06:41:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:32,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:41:32,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:41:32,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:41:32,647 INFO L87 Difference]: Start difference. First operand 839 states and 1062 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:33,186 INFO L93 Difference]: Finished difference Result 1373 states and 1788 transitions. [2023-04-01 06:41:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:41:33,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (2), 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 89 [2023-04-01 06:41:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:33,190 INFO L225 Difference]: With dead ends: 1373 [2023-04-01 06:41:33,190 INFO L226 Difference]: Without dead ends: 717 [2023-04-01 06:41:33,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:41:33,193 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 2682 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:33,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2682 Valid, 542 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:41:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-04-01 06:41:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2023-04-01 06:41:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 692 states have (on average 1.329479768786127) internal successors, (920), 713 states have internal predecessors, (920), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 923 transitions. [2023-04-01 06:41:33,249 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 923 transitions. Word has length 89 [2023-04-01 06:41:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:33,250 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 923 transitions. [2023-04-01 06:41:33,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 923 transitions. [2023-04-01 06:41:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-01 06:41:33,254 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:33,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:33,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:41:33,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:33,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash -841936591, now seen corresponding path program 1 times [2023-04-01 06:41:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304247497] [2023-04-01 06:41:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:33,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:33,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304247497] [2023-04-01 06:41:33,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304247497] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:33,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:33,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:41:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954996164] [2023-04-01 06:41:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:33,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:41:33,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:41:33,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:41:33,541 INFO L87 Difference]: Start difference. First operand 717 states and 923 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:33,976 INFO L93 Difference]: Finished difference Result 1251 states and 1648 transitions. [2023-04-01 06:41:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:41:33,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (2), 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 90 [2023-04-01 06:41:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:33,980 INFO L225 Difference]: With dead ends: 1251 [2023-04-01 06:41:33,980 INFO L226 Difference]: Without dead ends: 659 [2023-04-01 06:41:33,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:41:33,982 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2466 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:33,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 492 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:41:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-04-01 06:41:34,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-04-01 06:41:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 634 states have (on average 1.3454258675078865) internal successors, (853), 655 states have internal predecessors, (853), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 856 transitions. [2023-04-01 06:41:34,024 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 856 transitions. Word has length 90 [2023-04-01 06:41:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:34,024 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 856 transitions. [2023-04-01 06:41:34,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 856 transitions. [2023-04-01 06:41:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-01 06:41:34,026 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:34,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:34,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:41:34,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:34,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1669770124, now seen corresponding path program 1 times [2023-04-01 06:41:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098876674] [2023-04-01 06:41:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:34,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:34,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098876674] [2023-04-01 06:41:34,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098876674] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:34,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:34,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:41:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935203836] [2023-04-01 06:41:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:41:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:41:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:41:34,231 INFO L87 Difference]: Start difference. First operand 659 states and 856 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:34,692 INFO L93 Difference]: Finished difference Result 1193 states and 1580 transitions. [2023-04-01 06:41:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:41:34,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (2), 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 91 [2023-04-01 06:41:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:34,697 INFO L225 Difference]: With dead ends: 1193 [2023-04-01 06:41:34,697 INFO L226 Difference]: Without dead ends: 633 [2023-04-01 06:41:34,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:41:34,700 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2354 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:34,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 454 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:41:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-04-01 06:41:34,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2023-04-01 06:41:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 608 states have (on average 1.3519736842105263) internal successors, (822), 629 states have internal predecessors, (822), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 825 transitions. [2023-04-01 06:41:34,741 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 825 transitions. Word has length 91 [2023-04-01 06:41:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:34,741 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 825 transitions. [2023-04-01 06:41:34,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 825 transitions. [2023-04-01 06:41:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-01 06:41:34,747 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:34,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:34,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:41:34,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:34,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash 391702095, now seen corresponding path program 1 times [2023-04-01 06:41:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:34,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619150571] [2023-04-01 06:41:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:34,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:34,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619150571] [2023-04-01 06:41:34,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619150571] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:34,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:34,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:41:34,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774837455] [2023-04-01 06:41:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:34,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:41:34,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:41:34,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:41:34,977 INFO L87 Difference]: Start difference. First operand 633 states and 825 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:35,509 INFO L93 Difference]: Finished difference Result 1167 states and 1548 transitions. [2023-04-01 06:41:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:41:35,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (2), 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 92 [2023-04-01 06:41:35,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:35,512 INFO L225 Difference]: With dead ends: 1167 [2023-04-01 06:41:35,512 INFO L226 Difference]: Without dead ends: 623 [2023-04-01 06:41:35,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:41:35,514 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 2288 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:35,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 402 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:41:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-04-01 06:41:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2023-04-01 06:41:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 598 states have (on average 1.3528428093645486) internal successors, (809), 619 states have internal predecessors, (809), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 812 transitions. [2023-04-01 06:41:35,553 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 812 transitions. Word has length 92 [2023-04-01 06:41:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:35,553 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 812 transitions. [2023-04-01 06:41:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 812 transitions. [2023-04-01 06:41:35,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-01 06:41:35,555 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:35,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:35,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:41:35,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:35,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1339790450, now seen corresponding path program 1 times [2023-04-01 06:41:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345623567] [2023-04-01 06:41:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:35,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:35,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:35,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345623567] [2023-04-01 06:41:35,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345623567] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:35,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:35,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:41:35,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679922056] [2023-04-01 06:41:35,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:35,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:41:35,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:35,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:41:35,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:41:35,755 INFO L87 Difference]: Start difference. First operand 623 states and 812 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:36,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:36,137 INFO L93 Difference]: Finished difference Result 1157 states and 1534 transitions. [2023-04-01 06:41:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:41:36,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 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 93 [2023-04-01 06:41:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:36,139 INFO L225 Difference]: With dead ends: 1157 [2023-04-01 06:41:36,140 INFO L226 Difference]: Without dead ends: 603 [2023-04-01 06:41:36,141 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 [2023-04-01 06:41:36,141 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 2307 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:36,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 447 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:41:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-04-01 06:41:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2023-04-01 06:41:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3615916955017302) internal successors, (787), 599 states have internal predecessors, (787), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 790 transitions. [2023-04-01 06:41:36,181 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 790 transitions. Word has length 93 [2023-04-01 06:41:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:36,181 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 790 transitions. [2023-04-01 06:41:36,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 790 transitions. [2023-04-01 06:41:36,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 06:41:36,183 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:36,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:36,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:41:36,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:36,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1405351187, now seen corresponding path program 1 times [2023-04-01 06:41:36,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:36,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46828942] [2023-04-01 06:41:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:36,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:36,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46828942] [2023-04-01 06:41:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46828942] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:36,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:36,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 06:41:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694458513] [2023-04-01 06:41:36,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:36,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 06:41:36,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:36,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 06:41:36,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:41:36,659 INFO L87 Difference]: Start difference. First operand 603 states and 790 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:37,536 INFO L93 Difference]: Finished difference Result 1109 states and 1401 transitions. [2023-04-01 06:41:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 06:41:37,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 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 94 [2023-04-01 06:41:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:37,539 INFO L225 Difference]: With dead ends: 1109 [2023-04-01 06:41:37,540 INFO L226 Difference]: Without dead ends: 791 [2023-04-01 06:41:37,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-01 06:41:37,541 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 4412 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:37,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4412 Valid, 931 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:41:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-04-01 06:41:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 603. [2023-04-01 06:41:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3598615916955017) internal successors, (786), 599 states have internal predecessors, (786), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:37,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 789 transitions. [2023-04-01 06:41:37,595 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 789 transitions. Word has length 94 [2023-04-01 06:41:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:37,596 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 789 transitions. [2023-04-01 06:41:37,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 789 transitions. [2023-04-01 06:41:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 06:41:37,597 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:37,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:37,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:41:37,598 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:37,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash -159945519, now seen corresponding path program 1 times [2023-04-01 06:41:37,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:37,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729942649] [2023-04-01 06:41:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:37,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:38,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:38,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729942649] [2023-04-01 06:41:38,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729942649] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:38,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:38,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:38,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547145528] [2023-04-01 06:41:38,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:38,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:38,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:38,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:38,042 INFO L87 Difference]: Start difference. First operand 603 states and 789 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:39,306 INFO L93 Difference]: Finished difference Result 1080 states and 1409 transitions. [2023-04-01 06:41:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:39,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 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 94 [2023-04-01 06:41:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:39,310 INFO L225 Difference]: With dead ends: 1080 [2023-04-01 06:41:39,310 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 06:41:39,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:41:39,312 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 2252 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:39,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 2004 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:41:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 06:41:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 06:41:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3581314878892734) internal successors, (785), 599 states have internal predecessors, (785), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 788 transitions. [2023-04-01 06:41:39,427 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 788 transitions. Word has length 94 [2023-04-01 06:41:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:39,427 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 788 transitions. [2023-04-01 06:41:39,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:39,427 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 788 transitions. [2023-04-01 06:41:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 06:41:39,429 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:39,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:39,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:41:39,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:39,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1184579395, now seen corresponding path program 1 times [2023-04-01 06:41:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:39,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919529503] [2023-04-01 06:41:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:40,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:40,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919529503] [2023-04-01 06:41:40,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919529503] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:40,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:40,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:41:40,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562542879] [2023-04-01 06:41:40,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:40,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:41:40,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:40,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:41:40,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:41:40,073 INFO L87 Difference]: Start difference. First operand 603 states and 788 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:41,747 INFO L93 Difference]: Finished difference Result 1122 states and 1463 transitions. [2023-04-01 06:41:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 06:41:41,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 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 94 [2023-04-01 06:41:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:41,752 INFO L225 Difference]: With dead ends: 1122 [2023-04-01 06:41:41,752 INFO L226 Difference]: Without dead ends: 1050 [2023-04-01 06:41:41,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-01 06:41:41,755 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 5255 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5255 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:41,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5255 Valid, 2552 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 06:41:41,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2023-04-01 06:41:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 610. [2023-04-01 06:41:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 585 states have (on average 1.358974358974359) internal successors, (795), 606 states have internal predecessors, (795), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 798 transitions. [2023-04-01 06:41:41,826 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 798 transitions. Word has length 94 [2023-04-01 06:41:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:41,826 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 798 transitions. [2023-04-01 06:41:41,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 798 transitions. [2023-04-01 06:41:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 06:41:41,828 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:41,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:41,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:41:41,828 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:41,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1535212465, now seen corresponding path program 1 times [2023-04-01 06:41:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:41,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935686770] [2023-04-01 06:41:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:41,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:42,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:42,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935686770] [2023-04-01 06:41:42,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935686770] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:42,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:42,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353741491] [2023-04-01 06:41:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:42,243 INFO L87 Difference]: Start difference. First operand 610 states and 798 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:43,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:43,705 INFO L93 Difference]: Finished difference Result 1181 states and 1550 transitions. [2023-04-01 06:41:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 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 94 [2023-04-01 06:41:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:43,715 INFO L225 Difference]: With dead ends: 1181 [2023-04-01 06:41:43,715 INFO L226 Difference]: Without dead ends: 1020 [2023-04-01 06:41:43,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:41:43,716 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 2846 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:43,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 2713 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 06:41:43,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2023-04-01 06:41:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 603. [2023-04-01 06:41:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.356401384083045) internal successors, (784), 599 states have internal predecessors, (784), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 787 transitions. [2023-04-01 06:41:43,801 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 787 transitions. Word has length 94 [2023-04-01 06:41:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:43,801 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 787 transitions. [2023-04-01 06:41:43,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 787 transitions. [2023-04-01 06:41:43,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:41:43,804 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:43,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:43,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:41:43,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:43,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash -840723435, now seen corresponding path program 1 times [2023-04-01 06:41:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:43,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216381364] [2023-04-01 06:41:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:43,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:44,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216381364] [2023-04-01 06:41:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216381364] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:44,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806656567] [2023-04-01 06:41:44,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:44,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:44,333 INFO L87 Difference]: Start difference. First operand 603 states and 787 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:45,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:45,781 INFO L93 Difference]: Finished difference Result 1123 states and 1466 transitions. [2023-04-01 06:41:45,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:45,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 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 96 [2023-04-01 06:41:45,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:45,786 INFO L225 Difference]: With dead ends: 1123 [2023-04-01 06:41:45,786 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 06:41:45,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:41:45,788 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 4069 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4069 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:45,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4069 Valid, 2363 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 06:41:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 06:41:45,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-01 06:41:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3546712802768166) internal successors, (783), 599 states have internal predecessors, (783), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 786 transitions. [2023-04-01 06:41:45,856 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 786 transitions. Word has length 96 [2023-04-01 06:41:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:45,857 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 786 transitions. [2023-04-01 06:41:45,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 786 transitions. [2023-04-01 06:41:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:41:45,858 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:45,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:45,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 06:41:45,859 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:45,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1067075347, now seen corresponding path program 1 times [2023-04-01 06:41:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019281299] [2023-04-01 06:41:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:45,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:46,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:46,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019281299] [2023-04-01 06:41:46,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019281299] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:46,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:46,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832146994] [2023-04-01 06:41:46,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:46,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:46,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:46,292 INFO L87 Difference]: Start difference. First operand 603 states and 786 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:47,476 INFO L93 Difference]: Finished difference Result 1080 states and 1405 transitions. [2023-04-01 06:41:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 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 96 [2023-04-01 06:41:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:47,481 INFO L225 Difference]: With dead ends: 1080 [2023-04-01 06:41:47,481 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 06:41:47,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:41:47,482 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 2082 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:47,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 2199 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:41:47,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 06:41:47,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 06:41:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3529411764705883) internal successors, (782), 599 states have internal predecessors, (782), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 785 transitions. [2023-04-01 06:41:47,557 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 785 transitions. Word has length 96 [2023-04-01 06:41:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:47,558 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 785 transitions. [2023-04-01 06:41:47,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 785 transitions. [2023-04-01 06:41:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:41:47,559 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:47,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:47,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 06:41:47,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:47,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash -280583389, now seen corresponding path program 1 times [2023-04-01 06:41:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710746978] [2023-04-01 06:41:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:48,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:48,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710746978] [2023-04-01 06:41:48,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710746978] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:48,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:48,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 06:41:48,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408093398] [2023-04-01 06:41:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:48,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 06:41:48,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 06:41:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-04-01 06:41:48,224 INFO L87 Difference]: Start difference. First operand 603 states and 785 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:50,119 INFO L93 Difference]: Finished difference Result 1277 states and 1662 transitions. [2023-04-01 06:41:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 06:41:50,119 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (2), 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 96 [2023-04-01 06:41:50,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:50,123 INFO L225 Difference]: With dead ends: 1277 [2023-04-01 06:41:50,123 INFO L226 Difference]: Without dead ends: 1082 [2023-04-01 06:41:50,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-04-01 06:41:50,125 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 3041 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:50,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3356 Invalid, 3014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 06:41:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-04-01 06:41:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 603. [2023-04-01 06:41:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3512110726643598) internal successors, (781), 599 states have internal predecessors, (781), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 784 transitions. [2023-04-01 06:41:50,210 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 784 transitions. Word has length 96 [2023-04-01 06:41:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:50,210 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 784 transitions. [2023-04-01 06:41:50,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 784 transitions. [2023-04-01 06:41:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:41:50,212 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:50,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:50,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 06:41:50,213 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:50,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1262393216, now seen corresponding path program 1 times [2023-04-01 06:41:50,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513493435] [2023-04-01 06:41:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:50,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:50,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:50,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513493435] [2023-04-01 06:41:50,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513493435] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:50,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:50,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:50,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532512316] [2023-04-01 06:41:50,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:50,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:50,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:50,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:50,651 INFO L87 Difference]: Start difference. First operand 603 states and 784 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:51,869 INFO L93 Difference]: Finished difference Result 1074 states and 1398 transitions. [2023-04-01 06:41:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:51,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 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 96 [2023-04-01 06:41:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:51,873 INFO L225 Difference]: With dead ends: 1074 [2023-04-01 06:41:51,873 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 06:41:51,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:41:51,874 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3110 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3110 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:51,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3110 Valid, 2178 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:41:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 06:41:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 06:41:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3494809688581315) internal successors, (780), 599 states have internal predecessors, (780), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 783 transitions. [2023-04-01 06:41:51,965 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 783 transitions. Word has length 96 [2023-04-01 06:41:51,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:51,965 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 783 transitions. [2023-04-01 06:41:51,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:51,965 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 783 transitions. [2023-04-01 06:41:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:41:51,967 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:51,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:51,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 06:41:51,968 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:51,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash -552206747, now seen corresponding path program 1 times [2023-04-01 06:41:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:51,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407177915] [2023-04-01 06:41:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:51,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:52,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:52,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407177915] [2023-04-01 06:41:52,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407177915] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:52,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:52,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:52,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133586348] [2023-04-01 06:41:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:52,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:52,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:52,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:52,397 INFO L87 Difference]: Start difference. First operand 603 states and 783 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:53,873 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2023-04-01 06:41:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:53,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 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 96 [2023-04-01 06:41:53,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:53,877 INFO L225 Difference]: With dead ends: 1108 [2023-04-01 06:41:53,877 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 06:41:53,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:41:53,879 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 3445 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3445 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:53,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3445 Valid, 2832 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2359 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 06:41:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 06:41:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-01 06:41:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3477508650519032) internal successors, (779), 599 states have internal predecessors, (779), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 782 transitions. [2023-04-01 06:41:53,962 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 782 transitions. Word has length 96 [2023-04-01 06:41:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:53,962 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 782 transitions. [2023-04-01 06:41:53,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 782 transitions. [2023-04-01 06:41:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:41:53,964 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:53,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:53,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 06:41:53,964 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:53,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1054149209, now seen corresponding path program 1 times [2023-04-01 06:41:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594443755] [2023-04-01 06:41:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:54,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594443755] [2023-04-01 06:41:54,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594443755] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:54,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:54,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:54,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234709994] [2023-04-01 06:41:54,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:54,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:54,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:54,344 INFO L87 Difference]: Start difference. First operand 603 states and 782 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:55,673 INFO L93 Difference]: Finished difference Result 1080 states and 1402 transitions. [2023-04-01 06:41:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:55,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 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 96 [2023-04-01 06:41:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:55,677 INFO L225 Difference]: With dead ends: 1080 [2023-04-01 06:41:55,677 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 06:41:55,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:41:55,678 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 2943 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2943 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:55,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2943 Valid, 2339 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 06:41:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 06:41:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 06:41:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3460207612456747) internal successors, (778), 599 states have internal predecessors, (778), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 781 transitions. [2023-04-01 06:41:55,810 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 781 transitions. Word has length 96 [2023-04-01 06:41:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:55,810 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 781 transitions. [2023-04-01 06:41:55,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 781 transitions. [2023-04-01 06:41:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:41:55,812 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:55,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 06:41:55,812 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:55,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash -703516139, now seen corresponding path program 1 times [2023-04-01 06:41:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:55,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284538243] [2023-04-01 06:41:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:55,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:56,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284538243] [2023-04-01 06:41:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284538243] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:56,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:56,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:56,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558621263] [2023-04-01 06:41:56,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:56,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:56,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:56,193 INFO L87 Difference]: Start difference. First operand 603 states and 781 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:57,376 INFO L93 Difference]: Finished difference Result 1089 states and 1409 transitions. [2023-04-01 06:41:57,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:57,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 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 96 [2023-04-01 06:41:57,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:57,380 INFO L225 Difference]: With dead ends: 1089 [2023-04-01 06:41:57,380 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 06:41:57,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:41:57,381 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 3222 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3222 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:57,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3222 Valid, 2234 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:41:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 06:41:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 06:41:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3442906574394464) internal successors, (777), 599 states have internal predecessors, (777), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 780 transitions. [2023-04-01 06:41:57,487 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 780 transitions. Word has length 96 [2023-04-01 06:41:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:57,488 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 780 transitions. [2023-04-01 06:41:57,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 780 transitions. [2023-04-01 06:41:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:41:57,489 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:57,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:57,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 06:41:57,490 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:57,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash -574065394, now seen corresponding path program 1 times [2023-04-01 06:41:57,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:57,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636383869] [2023-04-01 06:41:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:57,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:57,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636383869] [2023-04-01 06:41:57,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636383869] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:57,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:57,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:57,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611946586] [2023-04-01 06:41:57,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:57,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:57,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:57,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:57,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:57,878 INFO L87 Difference]: Start difference. First operand 603 states and 780 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:59,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:41:59,143 INFO L93 Difference]: Finished difference Result 1123 states and 1459 transitions. [2023-04-01 06:41:59,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:41:59,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 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 96 [2023-04-01 06:41:59,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:41:59,147 INFO L225 Difference]: With dead ends: 1123 [2023-04-01 06:41:59,147 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 06:41:59,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:41:59,148 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 2625 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2625 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:41:59,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2625 Valid, 2782 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:41:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 06:41:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-01 06:41:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.342560553633218) internal successors, (776), 599 states have internal predecessors, (776), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 779 transitions. [2023-04-01 06:41:59,254 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 779 transitions. Word has length 96 [2023-04-01 06:41:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:41:59,254 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 779 transitions. [2023-04-01 06:41:59,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:41:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 779 transitions. [2023-04-01 06:41:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:41:59,256 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:41:59,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:41:59,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 06:41:59,256 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:41:59,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:41:59,257 INFO L85 PathProgramCache]: Analyzing trace with hash -176150049, now seen corresponding path program 1 times [2023-04-01 06:41:59,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:41:59,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565730455] [2023-04-01 06:41:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:41:59,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:41:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:41:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:41:59,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:41:59,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565730455] [2023-04-01 06:41:59,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565730455] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:41:59,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:41:59,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:41:59,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759646118] [2023-04-01 06:41:59,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:41:59,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:41:59,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:41:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:41:59,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:41:59,663 INFO L87 Difference]: Start difference. First operand 603 states and 779 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:42:00,845 INFO L93 Difference]: Finished difference Result 1051 states and 1353 transitions. [2023-04-01 06:42:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:42:00,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 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 98 [2023-04-01 06:42:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:42:00,848 INFO L225 Difference]: With dead ends: 1051 [2023-04-01 06:42:00,848 INFO L226 Difference]: Without dead ends: 992 [2023-04-01 06:42:00,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:42:00,849 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3861 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3861 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:42:00,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3861 Valid, 2328 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:42:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-01 06:42:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-01 06:42:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3408304498269896) internal successors, (775), 599 states have internal predecessors, (775), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 778 transitions. [2023-04-01 06:42:00,956 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 778 transitions. Word has length 98 [2023-04-01 06:42:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:42:00,956 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 778 transitions. [2023-04-01 06:42:00,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 778 transitions. [2023-04-01 06:42:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:42:00,958 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:42:00,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:42:00,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 06:42:00,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:42:00,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:42:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash -305600794, now seen corresponding path program 1 times [2023-04-01 06:42:00,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:42:00,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481863225] [2023-04-01 06:42:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:42:00,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:42:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:42:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:42:01,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:42:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481863225] [2023-04-01 06:42:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481863225] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:42:01,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:42:01,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:42:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20519015] [2023-04-01 06:42:01,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:42:01,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:42:01,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:42:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:42:01,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:42:01,323 INFO L87 Difference]: Start difference. First operand 603 states and 778 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:42:02,483 INFO L93 Difference]: Finished difference Result 1089 states and 1405 transitions. [2023-04-01 06:42:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:42:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 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 98 [2023-04-01 06:42:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:42:02,487 INFO L225 Difference]: With dead ends: 1089 [2023-04-01 06:42:02,487 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 06:42:02,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:42:02,489 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2818 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2818 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:42:02,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2818 Valid, 2521 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:42:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 06:42:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 06:42:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3391003460207613) internal successors, (774), 599 states have internal predecessors, (774), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 777 transitions. [2023-04-01 06:42:02,624 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 777 transitions. Word has length 98 [2023-04-01 06:42:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:42:02,624 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 777 transitions. [2023-04-01 06:42:02,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 777 transitions. [2023-04-01 06:42:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:42:02,626 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:42:02,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:42:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 06:42:02,626 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:42:02,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:42:02,627 INFO L85 PathProgramCache]: Analyzing trace with hash -904132493, now seen corresponding path program 1 times [2023-04-01 06:42:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:42:02,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830281261] [2023-04-01 06:42:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:42:02,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:42:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:42:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:42:02,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:42:02,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830281261] [2023-04-01 06:42:02,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830281261] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:42:02,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:42:02,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:42:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072969725] [2023-04-01 06:42:02,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:42:02,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:42:02,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:42:02,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:42:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:42:02,963 INFO L87 Difference]: Start difference. First operand 603 states and 777 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:42:04,115 INFO L93 Difference]: Finished difference Result 1095 states and 1409 transitions. [2023-04-01 06:42:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:42:04,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 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 98 [2023-04-01 06:42:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:42:04,118 INFO L225 Difference]: With dead ends: 1095 [2023-04-01 06:42:04,118 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 06:42:04,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:42:04,119 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 3479 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:42:04,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 2444 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:42:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 06:42:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 06:42:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3373702422145328) internal successors, (773), 599 states have internal predecessors, (773), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 776 transitions. [2023-04-01 06:42:04,241 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 776 transitions. Word has length 98 [2023-04-01 06:42:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:42:04,241 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 776 transitions. [2023-04-01 06:42:04,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 776 transitions. [2023-04-01 06:42:04,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:42:04,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:42:04,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:42:04,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 06:42:04,243 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:42:04,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:42:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1311046285, now seen corresponding path program 1 times [2023-04-01 06:42:04,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:42:04,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040802470] [2023-04-01 06:42:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:42:04,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:42:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:42:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:42:04,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:42:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040802470] [2023-04-01 06:42:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040802470] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:42:04,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:42:04,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:42:04,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884723247] [2023-04-01 06:42:04,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:42:04,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:42:04,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:42:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:42:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:42:04,576 INFO L87 Difference]: Start difference. First operand 603 states and 776 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:42:05,883 INFO L93 Difference]: Finished difference Result 1138 states and 1464 transitions. [2023-04-01 06:42:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:42:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 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 98 [2023-04-01 06:42:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:42:05,888 INFO L225 Difference]: With dead ends: 1138 [2023-04-01 06:42:05,888 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 06:42:05,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:42:05,890 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 2650 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:42:05,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2650 Valid, 2716 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:42:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 06:42:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-01 06:42:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3356401384083045) internal successors, (772), 599 states have internal predecessors, (772), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 775 transitions. [2023-04-01 06:42:06,008 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 775 transitions. Word has length 98 [2023-04-01 06:42:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:42:06,008 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 775 transitions. [2023-04-01 06:42:06,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 775 transitions. [2023-04-01 06:42:06,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:42:06,010 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:42:06,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:42:06,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-01 06:42:06,010 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:42:06,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:42:06,010 INFO L85 PathProgramCache]: Analyzing trace with hash -134066458, now seen corresponding path program 1 times [2023-04-01 06:42:06,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:42:06,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759779317] [2023-04-01 06:42:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:42:06,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:42:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:42:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:42:06,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:42:06,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759779317] [2023-04-01 06:42:06,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759779317] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:42:06,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:42:06,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:42:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743891364] [2023-04-01 06:42:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:42:06,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:42:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:42:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:42:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:42:06,414 INFO L87 Difference]: Start difference. First operand 603 states and 775 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:42:07,706 INFO L93 Difference]: Finished difference Result 1047 states and 1345 transitions. [2023-04-01 06:42:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:42:07,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 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 98 [2023-04-01 06:42:07,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:42:07,709 INFO L225 Difference]: With dead ends: 1047 [2023-04-01 06:42:07,709 INFO L226 Difference]: Without dead ends: 992 [2023-04-01 06:42:07,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:42:07,710 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 3568 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3568 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:42:07,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3568 Valid, 2561 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:42:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-01 06:42:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-01 06:42:07,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.333910034602076) internal successors, (771), 599 states have internal predecessors, (771), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 774 transitions. [2023-04-01 06:42:07,841 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 774 transitions. Word has length 98 [2023-04-01 06:42:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:42:07,841 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 774 transitions. [2023-04-01 06:42:07,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 774 transitions. [2023-04-01 06:42:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:42:07,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:42:07,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:42:07,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-01 06:42:07,843 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:42:07,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:42:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1793785511, now seen corresponding path program 1 times [2023-04-01 06:42:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:42:07,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023174578] [2023-04-01 06:42:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:42:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:42:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:42:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:42:08,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:42:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023174578] [2023-04-01 06:42:08,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023174578] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:42:08,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:42:08,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:42:08,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488151890] [2023-04-01 06:42:08,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:42:08,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:42:08,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:42:08,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:42:08,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:42:08,165 INFO L87 Difference]: Start difference. First operand 603 states and 774 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:42:09,418 INFO L93 Difference]: Finished difference Result 1051 states and 1347 transitions. [2023-04-01 06:42:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:42:09,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 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 98 [2023-04-01 06:42:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:42:09,421 INFO L225 Difference]: With dead ends: 1051 [2023-04-01 06:42:09,421 INFO L226 Difference]: Without dead ends: 992 [2023-04-01 06:42:09,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:42:09,426 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 1826 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:42:09,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 2601 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:42:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-01 06:42:09,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-01 06:42:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3321799307958477) internal successors, (770), 599 states have internal predecessors, (770), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 773 transitions. [2023-04-01 06:42:09,541 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 773 transitions. Word has length 98 [2023-04-01 06:42:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:42:09,541 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 773 transitions. [2023-04-01 06:42:09,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 773 transitions. [2023-04-01 06:42:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:42:09,543 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:42:09,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:42:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-01 06:42:09,543 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:42:09,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:42:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash -992184103, now seen corresponding path program 1 times [2023-04-01 06:42:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:42:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456986587] [2023-04-01 06:42:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:42:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:42:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:42:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:42:09,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:42:09,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456986587] [2023-04-01 06:42:09,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456986587] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:42:09,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:42:09,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:42:09,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732681313] [2023-04-01 06:42:09,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:42:09,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:42:09,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:42:09,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:42:09,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:42:09,887 INFO L87 Difference]: Start difference. First operand 603 states and 773 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:42:11,143 INFO L93 Difference]: Finished difference Result 1051 states and 1345 transitions. [2023-04-01 06:42:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:42:11,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 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 98 [2023-04-01 06:42:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:42:11,147 INFO L225 Difference]: With dead ends: 1051 [2023-04-01 06:42:11,147 INFO L226 Difference]: Without dead ends: 992 [2023-04-01 06:42:11,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:42:11,148 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 3563 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3563 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:42:11,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3563 Valid, 2558 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:42:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-01 06:42:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-01 06:42:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3304498269896194) internal successors, (769), 599 states have internal predecessors, (769), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 772 transitions. [2023-04-01 06:42:11,250 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 772 transitions. Word has length 98 [2023-04-01 06:42:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:42:11,250 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 772 transitions. [2023-04-01 06:42:11,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 772 transitions. [2023-04-01 06:42:11,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:42:11,252 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:42:11,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:42:11,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-01 06:42:11,252 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:42:11,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:42:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1952764228, now seen corresponding path program 1 times [2023-04-01 06:42:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:42:11,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009360830] [2023-04-01 06:42:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:42:11,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:42:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:42:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:42:11,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:42:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009360830] [2023-04-01 06:42:11,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009360830] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:42:11,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:42:11,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:42:11,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915139412] [2023-04-01 06:42:11,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:42:11,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:42:11,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:42:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:42:11,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:42:11,569 INFO L87 Difference]: Start difference. First operand 603 states and 772 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:42:12,848 INFO L93 Difference]: Finished difference Result 1089 states and 1395 transitions. [2023-04-01 06:42:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:42:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 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 98 [2023-04-01 06:42:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:42:12,850 INFO L225 Difference]: With dead ends: 1089 [2023-04-01 06:42:12,850 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 06:42:12,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:42:12,851 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 2137 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:42:12,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 2825 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:42:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 06:42:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 06:42:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.328719723183391) internal successors, (768), 599 states have internal predecessors, (768), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 771 transitions. [2023-04-01 06:42:12,951 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 771 transitions. Word has length 98 [2023-04-01 06:42:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:42:12,952 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 771 transitions. [2023-04-01 06:42:12,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:42:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 771 transitions. [2023-04-01 06:42:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 06:42:12,953 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:42:12,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:42:12,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-01 06:42:12,954 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 06:42:12,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:42:12,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1711568343, now seen corresponding path program 1 times [2023-04-01 06:42:12,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:42:12,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672789508] [2023-04-01 06:42:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:42:12,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:42:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat