/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 [2023-04-03 03:15:32,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:15:32,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:15:32,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:15:32,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:15:32,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:15:32,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:15:32,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:15:32,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:15:32,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:15:32,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:15:32,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-03 03:15:32,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:15:32,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:15:32,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:15:32,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 03:15:32,307 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:15:32,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:15:32,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:15:32,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:15:32,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:15:32,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:15:32,309 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:15:32,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:15:32,309 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:15:32,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:15:32,309 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:15:32,309 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:15:32,309 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:15:32,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:15:32,310 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:15:32,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:15:32,310 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:15:32,310 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:15:32,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:15:32,311 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:15:32,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:15:32,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:15:32,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:15:32,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:15:32,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:15:32,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:15:32,311 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:15:32,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:15:32,312 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:15:32,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:15:32,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:15:32,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:15:32,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:15:32,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:15:32,313 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:15:32,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:15:32,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:15:32,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:15:32,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:15:32,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:15:32,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:15:32,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:15:32,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:15:32,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:15:32,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:15:32,558 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:15:32,559 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:15:32,560 INFO L432 ainManager$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 [2023-04-03 03:15:33,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:15:34,041 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:15:34,041 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 [2023-04-03 03:15:34,065 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcf00b65b/1b57ea132b6b4326893e8cafef1d8b1b/FLAGfc908197b [2023-04-03 03:15:34,082 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcf00b65b/1b57ea132b6b4326893e8cafef1d8b1b [2023-04-03 03:15:34,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:15:34,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:15:34,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:15:34,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:15:34,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:15:34,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:15:34" (1/1) ... [2023-04-03 03:15:34,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c584a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:34, skipping insertion in model container [2023-04-03 03:15:34,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:15:34" (1/1) ... [2023-04-03 03:15:34,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:15:34,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:15:34,597 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] [2023-04-03 03:15:34,640 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2023-04-03 03:15:34,657 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] [2023-04-03 03:15:34,662 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] [2023-04-03 03:15:34,678 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] [2023-04-03 03:15:34,682 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] [2023-04-03 03:15:34,697 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] [2023-04-03 03:15:34,715 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] [2023-04-03 03:15:34,720 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] [2023-04-03 03:15:34,745 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] [2023-04-03 03:15:34,757 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2023-04-03 03:15:34,773 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] [2023-04-03 03:15:34,778 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] [2023-04-03 03:15:34,786 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] [2023-04-03 03:15:34,792 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2023-04-03 03:15:34,807 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2023-04-03 03:15:34,829 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] [2023-04-03 03:15:34,832 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] [2023-04-03 03:15:34,836 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] [2023-04-03 03:15:34,843 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] [2023-04-03 03:15:34,853 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] [2023-04-03 03:15:34,869 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] [2023-04-03 03:15:35,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:15:35,202 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:15:35,265 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] [2023-04-03 03:15:35,274 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] [2023-04-03 03:15:35,278 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] [2023-04-03 03:15:35,281 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] [2023-04-03 03:15:35,285 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] [2023-04-03 03:15:35,288 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] [2023-04-03 03:15:35,292 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] [2023-04-03 03:15:35,299 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] [2023-04-03 03:15:35,302 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] [2023-04-03 03:15:35,306 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] [2023-04-03 03:15:35,313 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] [2023-04-03 03:15:35,325 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] [2023-04-03 03:15:35,328 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] [2023-04-03 03:15:35,331 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] [2023-04-03 03:15:35,337 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] [2023-04-03 03:15:35,347 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2023-04-03 03:15:35,368 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] [2023-04-03 03:15:35,375 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[48946,48959] [2023-04-03 03:15:35,381 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[50035,50048] [2023-04-03 03:15:35,387 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] [2023-04-03 03:15:35,406 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] [2023-04-03 03:15:35,426 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] [2023-04-03 03:15:35,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:15:35,621 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:15:35,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35 WrapperNode [2023-04-03 03:15:35,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:15:35,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:15:35,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:15:35,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:15:35,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:15:35,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:15:35,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:15:35,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:15:35,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (1/1) ... [2023-04-03 03:15:35,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:15:35,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:15:35,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 03:15:35,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 03:15:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:15:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:15:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:15:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:15:35,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:15:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:15:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:15:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:15:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:15:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:15:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:15:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 03:15:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:15:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:15:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:15:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:15:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:15:35,898 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:15:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:15:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:15:36,204 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:15:36,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:15:38,672 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:15:38,858 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:15:38,859 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:15:38,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:15:38 BoogieIcfgContainer [2023-04-03 03:15:38,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:15:38,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:15:38,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:15:38,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:15:38,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:15:34" (1/3) ... [2023-04-03 03:15:38,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16eb7e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:15:38, skipping insertion in model container [2023-04-03 03:15:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:15:35" (2/3) ... [2023-04-03 03:15:38,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16eb7e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:15:38, skipping insertion in model container [2023-04-03 03:15:38,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:15:38" (3/3) ... [2023-04-03 03:15:38,875 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:15:38,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:15:38,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-04-03 03:15:38,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:15:38,958 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;@6cda19f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:15:38,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-04-03 03:15:38,966 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) [2023-04-03 03:15:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-03 03:15:38,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:38,986 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] [2023-04-03 03:15:38,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:38,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash 163065747, now seen corresponding path program 1 times [2023-04-03 03:15:39,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:39,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941578053] [2023-04-03 03:15:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:39,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:39,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:39,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941578053] [2023-04-03 03:15:39,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941578053] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:39,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:39,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:15:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34218634] [2023-04-03 03:15:39,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:39,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:15:39,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:39,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:15:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:15:39,743 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) [2023-04-03 03:15:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:40,518 INFO L93 Difference]: Finished difference Result 1641 states and 2883 transitions. [2023-04-03 03:15:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:15:40,522 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 [2023-04-03 03:15:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:40,546 INFO L225 Difference]: With dead ends: 1641 [2023-04-03 03:15:40,546 INFO L226 Difference]: Without dead ends: 839 [2023-04-03 03:15:40,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:15:40,563 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 4308 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2023-04-03 03:15:40,564 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] [2023-04-03 03:15:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-04-03 03:15:40,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2023-04-03 03:15:40,655 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) [2023-04-03 03:15:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1062 transitions. [2023-04-03 03:15:40,659 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1062 transitions. Word has length 88 [2023-04-03 03:15:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:40,659 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1062 transitions. [2023-04-03 03:15:40,659 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) [2023-04-03 03:15:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1062 transitions. [2023-04-03 03:15:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-03 03:15:40,664 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:40,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:15:40,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:15:40,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:40,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1903552170, now seen corresponding path program 1 times [2023-04-03 03:15:40,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:40,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153411927] [2023-04-03 03:15:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:40,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:40,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153411927] [2023-04-03 03:15:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153411927] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:40,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:40,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:15:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529281039] [2023-04-03 03:15:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:40,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:15:40,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:15:40,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:15:40,921 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) [2023-04-03 03:15:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:41,367 INFO L93 Difference]: Finished difference Result 1373 states and 1788 transitions. [2023-04-03 03:15:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:15:41,367 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 [2023-04-03 03:15:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:41,370 INFO L225 Difference]: With dead ends: 1373 [2023-04-03 03:15:41,370 INFO L226 Difference]: Without dead ends: 717 [2023-04-03 03:15:41,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:15:41,372 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 2682 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:41,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2682 Valid, 542 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:15:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-04-03 03:15:41,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2023-04-03 03:15:41,400 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) [2023-04-03 03:15:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 923 transitions. [2023-04-03 03:15:41,402 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 923 transitions. Word has length 89 [2023-04-03 03:15:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:41,402 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 923 transitions. [2023-04-03 03:15:41,403 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) [2023-04-03 03:15:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 923 transitions. [2023-04-03 03:15:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-03 03:15:41,408 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:41,408 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] [2023-04-03 03:15:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:15:41,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:41,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:41,409 INFO L85 PathProgramCache]: Analyzing trace with hash -841936591, now seen corresponding path program 1 times [2023-04-03 03:15:41,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:41,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324874405] [2023-04-03 03:15:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:41,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:41,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324874405] [2023-04-03 03:15:41,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324874405] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:41,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:41,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:15:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898125936] [2023-04-03 03:15:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:41,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:15:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:15:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:15:41,639 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) [2023-04-03 03:15:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:42,044 INFO L93 Difference]: Finished difference Result 1251 states and 1648 transitions. [2023-04-03 03:15:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:15:42,044 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 [2023-04-03 03:15:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:42,047 INFO L225 Difference]: With dead ends: 1251 [2023-04-03 03:15:42,047 INFO L226 Difference]: Without dead ends: 659 [2023-04-03 03:15:42,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:15:42,049 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, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:42,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 492 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:15:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-04-03 03:15:42,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-04-03 03:15:42,083 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) [2023-04-03 03:15:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 856 transitions. [2023-04-03 03:15:42,085 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 856 transitions. Word has length 90 [2023-04-03 03:15:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:42,086 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 856 transitions. [2023-04-03 03:15:42,086 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) [2023-04-03 03:15:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 856 transitions. [2023-04-03 03:15:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-03 03:15:42,088 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:42,088 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] [2023-04-03 03:15:42,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:15:42,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:42,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1669770124, now seen corresponding path program 1 times [2023-04-03 03:15:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:42,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138002679] [2023-04-03 03:15:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:42,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:42,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138002679] [2023-04-03 03:15:42,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138002679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:42,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:42,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:15:42,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123420912] [2023-04-03 03:15:42,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:42,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:15:42,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:42,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:15:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:15:42,324 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) [2023-04-03 03:15:42,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:42,796 INFO L93 Difference]: Finished difference Result 1193 states and 1580 transitions. [2023-04-03 03:15:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:15:42,796 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 [2023-04-03 03:15:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:42,800 INFO L225 Difference]: With dead ends: 1193 [2023-04-03 03:15:42,800 INFO L226 Difference]: Without dead ends: 633 [2023-04-03 03:15:42,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:15:42,804 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 [2023-04-03 03:15:42,805 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] [2023-04-03 03:15:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-04-03 03:15:42,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2023-04-03 03:15:42,846 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) [2023-04-03 03:15:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 825 transitions. [2023-04-03 03:15:42,848 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 825 transitions. Word has length 91 [2023-04-03 03:15:42,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:42,848 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 825 transitions. [2023-04-03 03:15:42,849 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) [2023-04-03 03:15:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 825 transitions. [2023-04-03 03:15:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-03 03:15:42,854 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:42,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:15:42,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:15:42,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:42,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:42,855 INFO L85 PathProgramCache]: Analyzing trace with hash 391702095, now seen corresponding path program 1 times [2023-04-03 03:15:42,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:42,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719348246] [2023-04-03 03:15:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:42,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:43,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:43,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719348246] [2023-04-03 03:15:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719348246] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:43,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:15:43,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727334430] [2023-04-03 03:15:43,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:43,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:15:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:15:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:15:43,064 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) [2023-04-03 03:15:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:43,607 INFO L93 Difference]: Finished difference Result 1167 states and 1548 transitions. [2023-04-03 03:15:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:15:43,608 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 [2023-04-03 03:15:43,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:43,611 INFO L225 Difference]: With dead ends: 1167 [2023-04-03 03:15:43,611 INFO L226 Difference]: Without dead ends: 623 [2023-04-03 03:15:43,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:15:43,612 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 [2023-04-03 03:15:43,613 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] [2023-04-03 03:15:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-04-03 03:15:43,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2023-04-03 03:15:43,645 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) [2023-04-03 03:15:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 812 transitions. [2023-04-03 03:15:43,647 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 812 transitions. Word has length 92 [2023-04-03 03:15:43,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:43,649 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 812 transitions. [2023-04-03 03:15:43,649 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) [2023-04-03 03:15:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 812 transitions. [2023-04-03 03:15:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-03 03:15:43,650 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:43,650 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] [2023-04-03 03:15:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:15:43,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:43,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1339790450, now seen corresponding path program 1 times [2023-04-03 03:15:43,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:43,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088102161] [2023-04-03 03:15:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:43,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:43,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:43,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088102161] [2023-04-03 03:15:43,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088102161] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:43,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:43,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:15:43,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585694490] [2023-04-03 03:15:43,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:43,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:15:43,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:43,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:15:43,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:15:43,843 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) [2023-04-03 03:15:44,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:44,231 INFO L93 Difference]: Finished difference Result 1157 states and 1534 transitions. [2023-04-03 03:15:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:15:44,232 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 [2023-04-03 03:15:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:44,234 INFO L225 Difference]: With dead ends: 1157 [2023-04-03 03:15:44,234 INFO L226 Difference]: Without dead ends: 603 [2023-04-03 03:15:44,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:15:44,237 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 2307 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-04-03 03:15:44,238 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] [2023-04-03 03:15:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-04-03 03:15:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2023-04-03 03:15:44,276 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) [2023-04-03 03:15:44,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 790 transitions. [2023-04-03 03:15:44,277 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 790 transitions. Word has length 93 [2023-04-03 03:15:44,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:44,278 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 790 transitions. [2023-04-03 03:15:44,278 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) [2023-04-03 03:15:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 790 transitions. [2023-04-03 03:15:44,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:15:44,279 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:44,280 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] [2023-04-03 03:15:44,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:15:44,280 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:44,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1405351187, now seen corresponding path program 1 times [2023-04-03 03:15:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:44,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921032334] [2023-04-03 03:15:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:44,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:44,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:44,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921032334] [2023-04-03 03:15:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921032334] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:44,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:44,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:15:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176638411] [2023-04-03 03:15:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:44,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:15:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:15:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:15:44,774 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) [2023-04-03 03:15:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:45,638 INFO L93 Difference]: Finished difference Result 1109 states and 1401 transitions. [2023-04-03 03:15:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 03:15:45,639 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 [2023-04-03 03:15:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:45,642 INFO L225 Difference]: With dead ends: 1109 [2023-04-03 03:15:45,642 INFO L226 Difference]: Without dead ends: 791 [2023-04-03 03:15:45,642 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 [2023-04-03 03:15:45,643 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 4412 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2023-04-03 03:15:45,643 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] [2023-04-03 03:15:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-04-03 03:15:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 603. [2023-04-03 03:15:45,698 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) [2023-04-03 03:15:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 789 transitions. [2023-04-03 03:15:45,700 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 789 transitions. Word has length 94 [2023-04-03 03:15:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:45,701 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 789 transitions. [2023-04-03 03:15:45,701 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) [2023-04-03 03:15:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 789 transitions. [2023-04-03 03:15:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:15:45,702 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:45,703 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] [2023-04-03 03:15:45,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:15:45,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:45,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash -159945519, now seen corresponding path program 1 times [2023-04-03 03:15:45,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:45,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901264884] [2023-04-03 03:15:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:45,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:46,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:46,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901264884] [2023-04-03 03:15:46,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901264884] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:46,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:46,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:46,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582417726] [2023-04-03 03:15:46,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:46,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:46,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:46,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:46,103 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) [2023-04-03 03:15:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:47,375 INFO L93 Difference]: Finished difference Result 1080 states and 1409 transitions. [2023-04-03 03:15:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:15:47,376 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 [2023-04-03 03:15:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:47,380 INFO L225 Difference]: With dead ends: 1080 [2023-04-03 03:15:47,380 INFO L226 Difference]: Without dead ends: 1008 [2023-04-03 03:15:47,380 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 [2023-04-03 03:15:47,382 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 [2023-04-03 03:15:47,382 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] [2023-04-03 03:15:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-03 03:15:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-03 03:15:47,445 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) [2023-04-03 03:15:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 788 transitions. [2023-04-03 03:15:47,448 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 788 transitions. Word has length 94 [2023-04-03 03:15:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:47,449 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 788 transitions. [2023-04-03 03:15:47,449 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) [2023-04-03 03:15:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 788 transitions. [2023-04-03 03:15:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:15:47,451 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:47,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:15:47,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:15:47,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:47,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1184579395, now seen corresponding path program 1 times [2023-04-03 03:15:47,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:47,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996735796] [2023-04-03 03:15:47,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:47,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:48,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996735796] [2023-04-03 03:15:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996735796] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:48,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:48,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:15:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508745927] [2023-04-03 03:15:48,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:15:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:15:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:15:48,021 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) [2023-04-03 03:15:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:49,590 INFO L93 Difference]: Finished difference Result 1122 states and 1463 transitions. [2023-04-03 03:15:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 03:15:49,590 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 [2023-04-03 03:15:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:49,594 INFO L225 Difference]: With dead ends: 1122 [2023-04-03 03:15:49,594 INFO L226 Difference]: Without dead ends: 1050 [2023-04-03 03:15:49,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-03 03:15:49,595 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 [2023-04-03 03:15:49,595 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] [2023-04-03 03:15:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2023-04-03 03:15:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 610. [2023-04-03 03:15:49,664 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) [2023-04-03 03:15:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 798 transitions. [2023-04-03 03:15:49,666 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 798 transitions. Word has length 94 [2023-04-03 03:15:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:49,666 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 798 transitions. [2023-04-03 03:15:49,666 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) [2023-04-03 03:15:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 798 transitions. [2023-04-03 03:15:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-03 03:15:49,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:49,668 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] [2023-04-03 03:15:49,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:15:49,668 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:49,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1535212465, now seen corresponding path program 1 times [2023-04-03 03:15:49,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728326254] [2023-04-03 03:15:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:49,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:50,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:50,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728326254] [2023-04-03 03:15:50,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728326254] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:50,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:50,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:50,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600159685] [2023-04-03 03:15:50,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:50,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:50,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:50,076 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) [2023-04-03 03:15:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:51,428 INFO L93 Difference]: Finished difference Result 1181 states and 1550 transitions. [2023-04-03 03:15:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:15:51,429 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 [2023-04-03 03:15:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:51,436 INFO L225 Difference]: With dead ends: 1181 [2023-04-03 03:15:51,436 INFO L226 Difference]: Without dead ends: 1020 [2023-04-03 03:15:51,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:15:51,440 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, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:51,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 2713 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:15:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2023-04-03 03:15:51,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 603. [2023-04-03 03:15:51,515 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) [2023-04-03 03:15:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 787 transitions. [2023-04-03 03:15:51,518 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 787 transitions. Word has length 94 [2023-04-03 03:15:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:51,518 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 787 transitions. [2023-04-03 03:15:51,518 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) [2023-04-03 03:15:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 787 transitions. [2023-04-03 03:15:51,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:15:51,520 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:51,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:15:51,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:15:51,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:51,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash -840723435, now seen corresponding path program 1 times [2023-04-03 03:15:51,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:51,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899074599] [2023-04-03 03:15:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:51,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:52,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:52,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899074599] [2023-04-03 03:15:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899074599] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:52,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:52,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864325896] [2023-04-03 03:15:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:52,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:52,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:52,016 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) [2023-04-03 03:15:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:53,372 INFO L93 Difference]: Finished difference Result 1123 states and 1466 transitions. [2023-04-03 03:15:53,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:15:53,373 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 [2023-04-03 03:15:53,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:53,376 INFO L225 Difference]: With dead ends: 1123 [2023-04-03 03:15:53,376 INFO L226 Difference]: Without dead ends: 1012 [2023-04-03 03:15:53,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:15:53,377 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 4069 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:15:53,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4069 Valid, 2363 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:15:53,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-03 03:15:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-03 03:15:53,445 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) [2023-04-03 03:15:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 786 transitions. [2023-04-03 03:15:53,447 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 786 transitions. Word has length 96 [2023-04-03 03:15:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:53,448 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 786 transitions. [2023-04-03 03:15:53,448 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) [2023-04-03 03:15:53,448 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 786 transitions. [2023-04-03 03:15:53,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:15:53,450 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:53,450 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] [2023-04-03 03:15:53,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:15:53,450 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:53,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1067075347, now seen corresponding path program 1 times [2023-04-03 03:15:53,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299186356] [2023-04-03 03:15:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:53,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:53,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299186356] [2023-04-03 03:15:53,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299186356] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:53,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:53,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:53,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352628705] [2023-04-03 03:15:53,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:53,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:53,797 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) [2023-04-03 03:15:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:54,943 INFO L93 Difference]: Finished difference Result 1080 states and 1405 transitions. [2023-04-03 03:15:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:15:54,943 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 [2023-04-03 03:15:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:54,947 INFO L225 Difference]: With dead ends: 1080 [2023-04-03 03:15:54,947 INFO L226 Difference]: Without dead ends: 1008 [2023-04-03 03:15:54,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:15:54,948 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 [2023-04-03 03:15:54,948 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] [2023-04-03 03:15:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-03 03:15:55,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-03 03:15:55,016 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) [2023-04-03 03:15:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 785 transitions. [2023-04-03 03:15:55,018 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 785 transitions. Word has length 96 [2023-04-03 03:15:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:55,018 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 785 transitions. [2023-04-03 03:15:55,019 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) [2023-04-03 03:15:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 785 transitions. [2023-04-03 03:15:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:15:55,020 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:55,020 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] [2023-04-03 03:15:55,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:15:55,021 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:55,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash -280583389, now seen corresponding path program 1 times [2023-04-03 03:15:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:55,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138017138] [2023-04-03 03:15:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:55,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:55,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:55,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138017138] [2023-04-03 03:15:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138017138] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:55,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 03:15:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152493165] [2023-04-03 03:15:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:55,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 03:15:55,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:55,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 03:15:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-04-03 03:15:55,642 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) [2023-04-03 03:15:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:57,494 INFO L93 Difference]: Finished difference Result 1277 states and 1662 transitions. [2023-04-03 03:15:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 03:15:57,494 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 [2023-04-03 03:15:57,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:57,498 INFO L225 Difference]: With dead ends: 1277 [2023-04-03 03:15:57,498 INFO L226 Difference]: Without dead ends: 1082 [2023-04-03 03:15:57,499 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 [2023-04-03 03:15:57,499 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 [2023-04-03 03:15:57,499 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] [2023-04-03 03:15:57,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-04-03 03:15:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 603. [2023-04-03 03:15:57,574 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) [2023-04-03 03:15:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 784 transitions. [2023-04-03 03:15:57,577 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 784 transitions. Word has length 96 [2023-04-03 03:15:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:57,578 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 784 transitions. [2023-04-03 03:15:57,579 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) [2023-04-03 03:15:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 784 transitions. [2023-04-03 03:15:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:15:57,586 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:57,586 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] [2023-04-03 03:15:57,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:15:57,586 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:57,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1262393216, now seen corresponding path program 1 times [2023-04-03 03:15:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037320266] [2023-04-03 03:15:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:57,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:57,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037320266] [2023-04-03 03:15:57,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037320266] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:57,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:57,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:57,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164551907] [2023-04-03 03:15:57,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:57,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:57,971 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) [2023-04-03 03:15:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:15:59,241 INFO L93 Difference]: Finished difference Result 1074 states and 1398 transitions. [2023-04-03 03:15:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:15:59,242 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 [2023-04-03 03:15:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:15:59,246 INFO L225 Difference]: With dead ends: 1074 [2023-04-03 03:15:59,246 INFO L226 Difference]: Without dead ends: 1008 [2023-04-03 03:15:59,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:15:59,247 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3110 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2023-04-03 03:15:59,247 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] [2023-04-03 03:15:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-03 03:15:59,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-03 03:15:59,331 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) [2023-04-03 03:15:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 783 transitions. [2023-04-03 03:15:59,333 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 783 transitions. Word has length 96 [2023-04-03 03:15:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:15:59,333 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 783 transitions. [2023-04-03 03:15:59,333 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) [2023-04-03 03:15:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 783 transitions. [2023-04-03 03:15:59,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:15:59,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:15:59,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:15:59,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:15:59,335 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:15:59,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:15:59,336 INFO L85 PathProgramCache]: Analyzing trace with hash -552206747, now seen corresponding path program 1 times [2023-04-03 03:15:59,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:15:59,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478534172] [2023-04-03 03:15:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:15:59,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:15:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:15:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:15:59,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:15:59,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478534172] [2023-04-03 03:15:59,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478534172] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:15:59,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:15:59,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:15:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093417920] [2023-04-03 03:15:59,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:15:59,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:15:59,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:15:59,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:15:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:15:59,804 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) [2023-04-03 03:16:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:01,311 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2023-04-03 03:16:01,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:01,311 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 [2023-04-03 03:16:01,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:01,315 INFO L225 Difference]: With dead ends: 1108 [2023-04-03 03:16:01,315 INFO L226 Difference]: Without dead ends: 1012 [2023-04-03 03:16:01,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:01,316 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 [2023-04-03 03:16:01,316 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] [2023-04-03 03:16:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-03 03:16:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-03 03:16:01,433 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) [2023-04-03 03:16:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 782 transitions. [2023-04-03 03:16:01,435 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 782 transitions. Word has length 96 [2023-04-03 03:16:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:01,435 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 782 transitions. [2023-04-03 03:16:01,436 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) [2023-04-03 03:16:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 782 transitions. [2023-04-03 03:16:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:16:01,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:01,437 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] [2023-04-03 03:16:01,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:16:01,439 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:01,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1054149209, now seen corresponding path program 1 times [2023-04-03 03:16:01,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:01,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786723620] [2023-04-03 03:16:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:01,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:01,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786723620] [2023-04-03 03:16:01,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786723620] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:01,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:01,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:01,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376298039] [2023-04-03 03:16:01,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:01,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:01,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:01,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:01,785 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) [2023-04-03 03:16:03,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:03,039 INFO L93 Difference]: Finished difference Result 1080 states and 1402 transitions. [2023-04-03 03:16:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:03,040 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 [2023-04-03 03:16:03,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:03,053 INFO L225 Difference]: With dead ends: 1080 [2023-04-03 03:16:03,054 INFO L226 Difference]: Without dead ends: 1008 [2023-04-03 03:16:03,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:03,063 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 2943 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:03,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2943 Valid, 2339 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-03 03:16:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-03 03:16:03,169 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) [2023-04-03 03:16:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 781 transitions. [2023-04-03 03:16:03,173 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 781 transitions. Word has length 96 [2023-04-03 03:16:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:03,174 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 781 transitions. [2023-04-03 03:16:03,174 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) [2023-04-03 03:16:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 781 transitions. [2023-04-03 03:16:03,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:16:03,176 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:03,177 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] [2023-04-03 03:16:03,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:16:03,177 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:03,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash -703516139, now seen corresponding path program 1 times [2023-04-03 03:16:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530847958] [2023-04-03 03:16:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:03,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:03,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530847958] [2023-04-03 03:16:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530847958] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975031645] [2023-04-03 03:16:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:03,502 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) [2023-04-03 03:16:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:04,628 INFO L93 Difference]: Finished difference Result 1089 states and 1409 transitions. [2023-04-03 03:16:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:04,629 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 [2023-04-03 03:16:04,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:04,632 INFO L225 Difference]: With dead ends: 1089 [2023-04-03 03:16:04,632 INFO L226 Difference]: Without dead ends: 1008 [2023-04-03 03:16:04,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:04,633 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 3222 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2023-04-03 03:16:04,633 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] [2023-04-03 03:16:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-03 03:16:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-03 03:16:04,737 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) [2023-04-03 03:16:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 780 transitions. [2023-04-03 03:16:04,738 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 780 transitions. Word has length 96 [2023-04-03 03:16:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:04,739 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 780 transitions. [2023-04-03 03:16:04,739 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) [2023-04-03 03:16:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 780 transitions. [2023-04-03 03:16:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 03:16:04,740 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:04,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:04,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 03:16:04,741 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:04,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash -574065394, now seen corresponding path program 1 times [2023-04-03 03:16:04,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:04,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164971040] [2023-04-03 03:16:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:04,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:05,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164971040] [2023-04-03 03:16:05,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164971040] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:05,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:05,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:05,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350035048] [2023-04-03 03:16:05,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:05,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:05,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:05,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:05,075 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) [2023-04-03 03:16:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:06,520 INFO L93 Difference]: Finished difference Result 1123 states and 1459 transitions. [2023-04-03 03:16:06,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:06,521 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 [2023-04-03 03:16:06,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:06,524 INFO L225 Difference]: With dead ends: 1123 [2023-04-03 03:16:06,525 INFO L226 Difference]: Without dead ends: 1012 [2023-04-03 03:16:06,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:06,526 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 2625 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:06,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2625 Valid, 2782 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:16:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-03 03:16:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-03 03:16:06,662 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) [2023-04-03 03:16:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 779 transitions. [2023-04-03 03:16:06,663 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 779 transitions. Word has length 96 [2023-04-03 03:16:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:06,664 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 779 transitions. [2023-04-03 03:16:06,664 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) [2023-04-03 03:16:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 779 transitions. [2023-04-03 03:16:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:06,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:06,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:06,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 03:16:06,666 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:06,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash -176150049, now seen corresponding path program 1 times [2023-04-03 03:16:06,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:06,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015182067] [2023-04-03 03:16:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:06,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:07,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015182067] [2023-04-03 03:16:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015182067] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:07,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:07,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:07,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680729727] [2023-04-03 03:16:07,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:07,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:07,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:07,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:07,109 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) [2023-04-03 03:16:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:08,442 INFO L93 Difference]: Finished difference Result 1051 states and 1353 transitions. [2023-04-03 03:16:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:08,443 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 [2023-04-03 03:16:08,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:08,445 INFO L225 Difference]: With dead ends: 1051 [2023-04-03 03:16:08,445 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:08,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:08,446 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3861 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:08,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3861 Valid, 2328 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:08,563 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) [2023-04-03 03:16:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 778 transitions. [2023-04-03 03:16:08,564 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 778 transitions. Word has length 98 [2023-04-03 03:16:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:08,564 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 778 transitions. [2023-04-03 03:16:08,564 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) [2023-04-03 03:16:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 778 transitions. [2023-04-03 03:16:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:08,566 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:08,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:08,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 03:16:08,566 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:08,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash -305600794, now seen corresponding path program 1 times [2023-04-03 03:16:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:08,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256736943] [2023-04-03 03:16:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:08,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:08,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:08,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256736943] [2023-04-03 03:16:08,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256736943] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:08,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:08,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664825458] [2023-04-03 03:16:08,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:08,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:08,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:08,904 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) [2023-04-03 03:16:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:10,151 INFO L93 Difference]: Finished difference Result 1089 states and 1405 transitions. [2023-04-03 03:16:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:10,151 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 [2023-04-03 03:16:10,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:10,154 INFO L225 Difference]: With dead ends: 1089 [2023-04-03 03:16:10,154 INFO L226 Difference]: Without dead ends: 1008 [2023-04-03 03:16:10,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:10,155 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:10,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2818 Valid, 2521 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-03 03:16:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-03 03:16:10,246 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) [2023-04-03 03:16:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 777 transitions. [2023-04-03 03:16:10,246 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 777 transitions. Word has length 98 [2023-04-03 03:16:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:10,247 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 777 transitions. [2023-04-03 03:16:10,247 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) [2023-04-03 03:16:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 777 transitions. [2023-04-03 03:16:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:10,248 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:10,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:10,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 03:16:10,249 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:10,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:10,249 INFO L85 PathProgramCache]: Analyzing trace with hash -904132493, now seen corresponding path program 1 times [2023-04-03 03:16:10,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:10,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842750693] [2023-04-03 03:16:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:10,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:10,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:10,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842750693] [2023-04-03 03:16:10,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842750693] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:10,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176725026] [2023-04-03 03:16:10,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:10,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:10,575 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) [2023-04-03 03:16:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:11,700 INFO L93 Difference]: Finished difference Result 1095 states and 1409 transitions. [2023-04-03 03:16:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:11,700 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 [2023-04-03 03:16:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:11,703 INFO L225 Difference]: With dead ends: 1095 [2023-04-03 03:16:11,703 INFO L226 Difference]: Without dead ends: 1008 [2023-04-03 03:16:11,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:11,704 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 3479 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2023-04-03 03:16:11,704 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] [2023-04-03 03:16:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-03 03:16:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-03 03:16:11,813 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) [2023-04-03 03:16:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 776 transitions. [2023-04-03 03:16:11,815 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 776 transitions. Word has length 98 [2023-04-03 03:16:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:11,815 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 776 transitions. [2023-04-03 03:16:11,815 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) [2023-04-03 03:16:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 776 transitions. [2023-04-03 03:16:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:11,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:11,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:11,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 03:16:11,818 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:11,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:11,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1311046285, now seen corresponding path program 1 times [2023-04-03 03:16:11,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:11,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593010322] [2023-04-03 03:16:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:11,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:12,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:12,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593010322] [2023-04-03 03:16:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593010322] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:12,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:12,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:12,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855687463] [2023-04-03 03:16:12,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:12,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:12,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:12,160 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) [2023-04-03 03:16:13,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:13,432 INFO L93 Difference]: Finished difference Result 1138 states and 1464 transitions. [2023-04-03 03:16:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:13,433 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 [2023-04-03 03:16:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:13,436 INFO L225 Difference]: With dead ends: 1138 [2023-04-03 03:16:13,436 INFO L226 Difference]: Without dead ends: 1012 [2023-04-03 03:16:13,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:13,437 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 2650 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2023-04-03 03:16:13,437 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] [2023-04-03 03:16:13,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-03 03:16:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-03 03:16:13,551 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) [2023-04-03 03:16:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 775 transitions. [2023-04-03 03:16:13,552 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 775 transitions. Word has length 98 [2023-04-03 03:16:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:13,553 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 775 transitions. [2023-04-03 03:16:13,553 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) [2023-04-03 03:16:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 775 transitions. [2023-04-03 03:16:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:13,554 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:13,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:13,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 03:16:13,555 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:13,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash -134066458, now seen corresponding path program 1 times [2023-04-03 03:16:13,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:13,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431048151] [2023-04-03 03:16:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:13,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:13,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:13,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431048151] [2023-04-03 03:16:13,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431048151] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:13,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:13,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:13,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883672462] [2023-04-03 03:16:13,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:13,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:13,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:13,907 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) [2023-04-03 03:16:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:15,171 INFO L93 Difference]: Finished difference Result 1047 states and 1345 transitions. [2023-04-03 03:16:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:15,172 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 [2023-04-03 03:16:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:15,174 INFO L225 Difference]: With dead ends: 1047 [2023-04-03 03:16:15,175 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:15,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:15,175 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 [2023-04-03 03:16:15,176 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] [2023-04-03 03:16:15,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:15,302 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) [2023-04-03 03:16:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 774 transitions. [2023-04-03 03:16:15,303 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 774 transitions. Word has length 98 [2023-04-03 03:16:15,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:15,304 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 774 transitions. [2023-04-03 03:16:15,304 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) [2023-04-03 03:16:15,304 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 774 transitions. [2023-04-03 03:16:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:15,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:15,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:15,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 03:16:15,306 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:15,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1793785511, now seen corresponding path program 1 times [2023-04-03 03:16:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368679151] [2023-04-03 03:16:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:15,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:15,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368679151] [2023-04-03 03:16:15,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368679151] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:15,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:15,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:15,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197002930] [2023-04-03 03:16:15,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:15,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:15,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:15,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:15,618 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) [2023-04-03 03:16:16,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:16,866 INFO L93 Difference]: Finished difference Result 1051 states and 1347 transitions. [2023-04-03 03:16:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:16,867 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 [2023-04-03 03:16:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:16,869 INFO L225 Difference]: With dead ends: 1051 [2023-04-03 03:16:16,869 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:16,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:16,870 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 [2023-04-03 03:16:16,870 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] [2023-04-03 03:16:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:16,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:16,985 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) [2023-04-03 03:16:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 773 transitions. [2023-04-03 03:16:16,987 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 773 transitions. Word has length 98 [2023-04-03 03:16:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:16,987 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 773 transitions. [2023-04-03 03:16:16,987 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) [2023-04-03 03:16:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 773 transitions. [2023-04-03 03:16:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:16,989 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:16,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:16,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 03:16:16,989 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:16,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:16,989 INFO L85 PathProgramCache]: Analyzing trace with hash -992184103, now seen corresponding path program 1 times [2023-04-03 03:16:16,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:16,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256487270] [2023-04-03 03:16:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:16,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:17,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256487270] [2023-04-03 03:16:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256487270] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:17,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:17,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:17,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274341933] [2023-04-03 03:16:17,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:17,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:17,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:17,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:17,291 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) [2023-04-03 03:16:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:18,510 INFO L93 Difference]: Finished difference Result 1051 states and 1345 transitions. [2023-04-03 03:16:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:18,511 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 [2023-04-03 03:16:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:18,513 INFO L225 Difference]: With dead ends: 1051 [2023-04-03 03:16:18,513 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:18,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:18,514 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, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:18,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3563 Valid, 2558 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:18,643 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) [2023-04-03 03:16:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 772 transitions. [2023-04-03 03:16:18,644 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 772 transitions. Word has length 98 [2023-04-03 03:16:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:18,644 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 772 transitions. [2023-04-03 03:16:18,645 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) [2023-04-03 03:16:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 772 transitions. [2023-04-03 03:16:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:18,646 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:18,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:18,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-03 03:16:18,647 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:18,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1952764228, now seen corresponding path program 1 times [2023-04-03 03:16:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185860177] [2023-04-03 03:16:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:18,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185860177] [2023-04-03 03:16:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185860177] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003276852] [2023-04-03 03:16:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:18,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:18,945 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) [2023-04-03 03:16:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:20,241 INFO L93 Difference]: Finished difference Result 1089 states and 1395 transitions. [2023-04-03 03:16:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:20,241 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 [2023-04-03 03:16:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:20,243 INFO L225 Difference]: With dead ends: 1089 [2023-04-03 03:16:20,244 INFO L226 Difference]: Without dead ends: 1008 [2023-04-03 03:16:20,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:20,244 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 [2023-04-03 03:16:20,245 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] [2023-04-03 03:16:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-03 03:16:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-03 03:16:20,347 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) [2023-04-03 03:16:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 771 transitions. [2023-04-03 03:16:20,348 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 771 transitions. Word has length 98 [2023-04-03 03:16:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:20,348 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 771 transitions. [2023-04-03 03:16:20,348 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) [2023-04-03 03:16:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 771 transitions. [2023-04-03 03:16:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:20,350 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:20,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:20,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-03 03:16:20,350 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:20,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1711568343, now seen corresponding path program 1 times [2023-04-03 03:16:20,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:20,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826054133] [2023-04-03 03:16:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:20,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:20,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:20,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826054133] [2023-04-03 03:16:20,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826054133] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:20,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:20,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:20,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434421720] [2023-04-03 03:16:20,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:20,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:20,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:20,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:20,651 INFO L87 Difference]: Start difference. First operand 603 states and 771 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) [2023-04-03 03:16:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:21,975 INFO L93 Difference]: Finished difference Result 1051 states and 1343 transitions. [2023-04-03 03:16:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:21,975 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 [2023-04-03 03:16:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:21,978 INFO L225 Difference]: With dead ends: 1051 [2023-04-03 03:16:21,978 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:21,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:21,979 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 2574 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:21,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2574 Valid, 2697 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3269896193771626) internal successors, (767), 599 states have internal predecessors, (767), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 770 transitions. [2023-04-03 03:16:22,145 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 770 transitions. Word has length 98 [2023-04-03 03:16:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:22,146 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 770 transitions. [2023-04-03 03:16:22,146 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) [2023-04-03 03:16:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 770 transitions. [2023-04-03 03:16:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:22,147 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:22,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:22,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-03 03:16:22,148 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:22,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash 654899548, now seen corresponding path program 1 times [2023-04-03 03:16:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:22,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506085778] [2023-04-03 03:16:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:22,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:22,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:22,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506085778] [2023-04-03 03:16:22,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506085778] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:22,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:22,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:22,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845342206] [2023-04-03 03:16:22,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:22,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:22,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:22,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:22,473 INFO L87 Difference]: Start difference. First operand 603 states and 770 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) [2023-04-03 03:16:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:23,793 INFO L93 Difference]: Finished difference Result 1047 states and 1338 transitions. [2023-04-03 03:16:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:23,793 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 [2023-04-03 03:16:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:23,796 INFO L225 Difference]: With dead ends: 1047 [2023-04-03 03:16:23,796 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:23,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:23,797 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 3426 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:23,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3426 Valid, 2657 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3252595155709344) internal successors, (766), 599 states have internal predecessors, (766), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 769 transitions. [2023-04-03 03:16:23,905 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 769 transitions. Word has length 98 [2023-04-03 03:16:23,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:23,905 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 769 transitions. [2023-04-03 03:16:23,905 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) [2023-04-03 03:16:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 769 transitions. [2023-04-03 03:16:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:23,907 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:23,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:23,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-03 03:16:23,907 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:23,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1014248550, now seen corresponding path program 1 times [2023-04-03 03:16:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:23,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717502434] [2023-04-03 03:16:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:24,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:24,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717502434] [2023-04-03 03:16:24,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717502434] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:24,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:24,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:24,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011967050] [2023-04-03 03:16:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:24,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:24,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:24,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:24,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:24,254 INFO L87 Difference]: Start difference. First operand 603 states and 769 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) [2023-04-03 03:16:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:25,563 INFO L93 Difference]: Finished difference Result 1045 states and 1335 transitions. [2023-04-03 03:16:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:25,565 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 [2023-04-03 03:16:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:25,568 INFO L225 Difference]: With dead ends: 1045 [2023-04-03 03:16:25,568 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:25,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:25,569 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 3345 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3345 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:25,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3345 Valid, 2697 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:25,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3235294117647058) internal successors, (765), 599 states have internal predecessors, (765), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:25,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 768 transitions. [2023-04-03 03:16:25,692 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 768 transitions. Word has length 98 [2023-04-03 03:16:25,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:25,692 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 768 transitions. [2023-04-03 03:16:25,692 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) [2023-04-03 03:16:25,692 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 768 transitions. [2023-04-03 03:16:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:25,694 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:25,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:25,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-03 03:16:25,694 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:25,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1906794088, now seen corresponding path program 1 times [2023-04-03 03:16:25,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:25,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236775962] [2023-04-03 03:16:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:25,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:25,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:25,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236775962] [2023-04-03 03:16:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236775962] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:25,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956578740] [2023-04-03 03:16:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:25,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:25,955 INFO L87 Difference]: Start difference. First operand 603 states and 768 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) [2023-04-03 03:16:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:27,215 INFO L93 Difference]: Finished difference Result 1047 states and 1336 transitions. [2023-04-03 03:16:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:27,216 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 [2023-04-03 03:16:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:27,219 INFO L225 Difference]: With dead ends: 1047 [2023-04-03 03:16:27,219 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:27,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:27,220 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 2544 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2544 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:27,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2544 Valid, 2692 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3217993079584776) internal successors, (764), 599 states have internal predecessors, (764), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 767 transitions. [2023-04-03 03:16:27,341 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 767 transitions. Word has length 98 [2023-04-03 03:16:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:27,341 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 767 transitions. [2023-04-03 03:16:27,341 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) [2023-04-03 03:16:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 767 transitions. [2023-04-03 03:16:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:27,343 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:27,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-03 03:16:27,343 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:27,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2126249870, now seen corresponding path program 1 times [2023-04-03 03:16:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:27,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852197950] [2023-04-03 03:16:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:27,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:27,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852197950] [2023-04-03 03:16:27,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852197950] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:27,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:27,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:27,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967377086] [2023-04-03 03:16:27,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:27,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:27,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:27,613 INFO L87 Difference]: Start difference. First operand 603 states and 767 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) [2023-04-03 03:16:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:28,886 INFO L93 Difference]: Finished difference Result 1051 states and 1338 transitions. [2023-04-03 03:16:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:28,887 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 [2023-04-03 03:16:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:28,889 INFO L225 Difference]: With dead ends: 1051 [2023-04-03 03:16:28,889 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:28,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:28,890 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 3419 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3419 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:28,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3419 Valid, 2652 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.320069204152249) internal successors, (763), 599 states have internal predecessors, (763), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 766 transitions. [2023-04-03 03:16:29,012 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 766 transitions. Word has length 98 [2023-04-03 03:16:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:29,012 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 766 transitions. [2023-04-03 03:16:29,012 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) [2023-04-03 03:16:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 766 transitions. [2023-04-03 03:16:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:29,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:29,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:29,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-03 03:16:29,014 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:29,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash 68643961, now seen corresponding path program 1 times [2023-04-03 03:16:29,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:29,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649317484] [2023-04-03 03:16:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:29,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:29,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:29,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649317484] [2023-04-03 03:16:29,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649317484] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:29,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:29,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:29,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684898265] [2023-04-03 03:16:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:29,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:29,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:29,299 INFO L87 Difference]: Start difference. First operand 603 states and 766 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) [2023-04-03 03:16:30,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:30,603 INFO L93 Difference]: Finished difference Result 1047 states and 1333 transitions. [2023-04-03 03:16:30,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:30,603 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 [2023-04-03 03:16:30,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:30,605 INFO L225 Difference]: With dead ends: 1047 [2023-04-03 03:16:30,605 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:30,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:30,606 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 3306 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3306 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:30,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3306 Valid, 2707 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3183391003460208) internal successors, (762), 599 states have internal predecessors, (762), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 765 transitions. [2023-04-03 03:16:30,732 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 765 transitions. Word has length 98 [2023-04-03 03:16:30,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:30,732 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 765 transitions. [2023-04-03 03:16:30,732 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) [2023-04-03 03:16:30,732 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 765 transitions. [2023-04-03 03:16:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 03:16:30,733 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:30,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:30,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-03 03:16:30,734 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:30,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash 457646490, now seen corresponding path program 1 times [2023-04-03 03:16:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:30,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244844477] [2023-04-03 03:16:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:30,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244844477] [2023-04-03 03:16:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244844477] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085056737] [2023-04-03 03:16:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:30,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:30,965 INFO L87 Difference]: Start difference. First operand 603 states and 765 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) [2023-04-03 03:16:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:32,231 INFO L93 Difference]: Finished difference Result 1051 states and 1336 transitions. [2023-04-03 03:16:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:32,232 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 [2023-04-03 03:16:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:32,234 INFO L225 Difference]: With dead ends: 1051 [2023-04-03 03:16:32,234 INFO L226 Difference]: Without dead ends: 992 [2023-04-03 03:16:32,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:32,235 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 2557 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:32,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2557 Valid, 2693 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-03 03:16:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-03 03:16:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3166089965397925) internal successors, (761), 599 states have internal predecessors, (761), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 764 transitions. [2023-04-03 03:16:32,366 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 764 transitions. Word has length 98 [2023-04-03 03:16:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:32,366 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 764 transitions. [2023-04-03 03:16:32,366 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) [2023-04-03 03:16:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 764 transitions. [2023-04-03 03:16:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-03 03:16:32,367 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:32,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:32,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-03 03:16:32,368 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:32,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:32,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1761707920, now seen corresponding path program 1 times [2023-04-03 03:16:32,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:32,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334367262] [2023-04-03 03:16:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:32,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:33,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334367262] [2023-04-03 03:16:33,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334367262] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:33,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:33,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:16:33,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849444207] [2023-04-03 03:16:33,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:33,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:16:33,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:33,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:16:33,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:16:33,092 INFO L87 Difference]: Start difference. First operand 603 states and 764 transitions. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:34,709 INFO L93 Difference]: Finished difference Result 1136 states and 1449 transitions. [2023-04-03 03:16:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:16:34,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-03 03:16:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:34,711 INFO L225 Difference]: With dead ends: 1136 [2023-04-03 03:16:34,711 INFO L226 Difference]: Without dead ends: 1088 [2023-04-03 03:16:34,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:16:34,712 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 4042 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4042 SdHoareTripleChecker+Valid, 6430 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:34,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4042 Valid, 6430 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2023-04-03 03:16:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 602. [2023-04-03 03:16:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 577 states have (on average 1.315424610051993) internal successors, (759), 598 states have internal predecessors, (759), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 762 transitions. [2023-04-03 03:16:34,854 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 762 transitions. Word has length 99 [2023-04-03 03:16:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:34,854 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 762 transitions. [2023-04-03 03:16:34,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 762 transitions. [2023-04-03 03:16:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:34,855 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:34,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-03 03:16:34,856 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:34,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash -754288459, now seen corresponding path program 1 times [2023-04-03 03:16:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:34,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606282973] [2023-04-03 03:16:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:35,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606282973] [2023-04-03 03:16:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606282973] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:35,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:35,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715146564] [2023-04-03 03:16:35,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:35,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:35,224 INFO L87 Difference]: Start difference. First operand 602 states and 762 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:36,549 INFO L93 Difference]: Finished difference Result 1011 states and 1270 transitions. [2023-04-03 03:16:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:36,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:36,551 INFO L225 Difference]: With dead ends: 1011 [2023-04-03 03:16:36,551 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:16:36,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:36,551 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 3800 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3800 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:36,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3800 Valid, 2153 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:16:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 602. [2023-04-03 03:16:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 577 states have (on average 1.3136915077989602) internal successors, (758), 598 states have internal predecessors, (758), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 761 transitions. [2023-04-03 03:16:36,696 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 761 transitions. Word has length 100 [2023-04-03 03:16:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:36,697 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 761 transitions. [2023-04-03 03:16:36,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 761 transitions. [2023-04-03 03:16:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:36,698 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:36,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:36,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-03 03:16:36,698 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:36,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1174868053, now seen corresponding path program 1 times [2023-04-03 03:16:36,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:36,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859532870] [2023-04-03 03:16:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:36,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:37,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859532870] [2023-04-03 03:16:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859532870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:37,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251187133] [2023-04-03 03:16:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:37,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:37,024 INFO L87 Difference]: Start difference. First operand 602 states and 761 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:38,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:38,677 INFO L93 Difference]: Finished difference Result 1055 states and 1335 transitions. [2023-04-03 03:16:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:38,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:38,678 INFO L225 Difference]: With dead ends: 1055 [2023-04-03 03:16:38,678 INFO L226 Difference]: Without dead ends: 991 [2023-04-03 03:16:38,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:38,679 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 3294 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:38,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3294 Valid, 2718 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:16:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-04-03 03:16:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 602. [2023-04-03 03:16:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 577 states have (on average 1.3119584055459272) internal successors, (757), 598 states have internal predecessors, (757), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 760 transitions. [2023-04-03 03:16:38,842 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 760 transitions. Word has length 100 [2023-04-03 03:16:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:38,842 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 760 transitions. [2023-04-03 03:16:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 760 transitions. [2023-04-03 03:16:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:38,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:38,843 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, 1, 1] [2023-04-03 03:16:38,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-03 03:16:38,844 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:38,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash 511555385, now seen corresponding path program 1 times [2023-04-03 03:16:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72015074] [2023-04-03 03:16:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:38,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:39,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:39,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72015074] [2023-04-03 03:16:39,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72015074] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:39,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:39,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:39,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396512649] [2023-04-03 03:16:39,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:39,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:39,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:39,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:39,098 INFO L87 Difference]: Start difference. First operand 602 states and 760 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:40,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:40,440 INFO L93 Difference]: Finished difference Result 1055 states and 1334 transitions. [2023-04-03 03:16:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:40,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:40,442 INFO L225 Difference]: With dead ends: 1055 [2023-04-03 03:16:40,442 INFO L226 Difference]: Without dead ends: 991 [2023-04-03 03:16:40,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:16:40,443 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 2609 mSDsluCounter, 1985 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:40,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 2641 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:40,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-04-03 03:16:40,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 602. [2023-04-03 03:16:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 577 states have (on average 1.3102253032928943) internal successors, (756), 598 states have internal predecessors, (756), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 759 transitions. [2023-04-03 03:16:40,606 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 759 transitions. Word has length 100 [2023-04-03 03:16:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:40,606 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 759 transitions. [2023-04-03 03:16:40,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:40,606 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 759 transitions. [2023-04-03 03:16:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:40,607 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:40,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:40,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-03 03:16:40,607 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:40,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1417601127, now seen corresponding path program 1 times [2023-04-03 03:16:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:40,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792610023] [2023-04-03 03:16:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:40,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:40,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792610023] [2023-04-03 03:16:40,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792610023] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:40,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:40,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366514200] [2023-04-03 03:16:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:40,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:40,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:40,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:40,882 INFO L87 Difference]: Start difference. First operand 602 states and 759 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:42,359 INFO L93 Difference]: Finished difference Result 1011 states and 1267 transitions. [2023-04-03 03:16:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:42,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:42,362 INFO L225 Difference]: With dead ends: 1011 [2023-04-03 03:16:42,362 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:16:42,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:42,363 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 3549 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:42,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3549 Valid, 2315 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:16:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:16:42,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 602. [2023-04-03 03:16:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 577 states have (on average 1.3084922010398614) internal successors, (755), 598 states have internal predecessors, (755), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 758 transitions. [2023-04-03 03:16:42,518 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 758 transitions. Word has length 100 [2023-04-03 03:16:42,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:42,518 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 758 transitions. [2023-04-03 03:16:42,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 758 transitions. [2023-04-03 03:16:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:42,519 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:42,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:42,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-03 03:16:42,520 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:42,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1716151565, now seen corresponding path program 1 times [2023-04-03 03:16:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989457950] [2023-04-03 03:16:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:43,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989457950] [2023-04-03 03:16:43,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989457950] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:43,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:43,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:16:43,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746583285] [2023-04-03 03:16:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:43,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:16:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:16:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:16:43,005 INFO L87 Difference]: Start difference. First operand 602 states and 758 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:45,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:45,317 INFO L93 Difference]: Finished difference Result 1251 states and 1583 transitions. [2023-04-03 03:16:45,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:16:45,317 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:45,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:45,319 INFO L225 Difference]: With dead ends: 1251 [2023-04-03 03:16:45,320 INFO L226 Difference]: Without dead ends: 1199 [2023-04-03 03:16:45,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:16:45,321 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 6194 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6194 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:45,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6194 Valid, 2408 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:16:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-04-03 03:16:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 606. [2023-04-03 03:16:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 581 states have (on average 1.306368330464716) internal successors, (759), 602 states have internal predecessors, (759), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 762 transitions. [2023-04-03 03:16:45,497 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 762 transitions. Word has length 100 [2023-04-03 03:16:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:45,498 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 762 transitions. [2023-04-03 03:16:45,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 762 transitions. [2023-04-03 03:16:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:45,499 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:45,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:45,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-03 03:16:45,499 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:45,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash -453474983, now seen corresponding path program 1 times [2023-04-03 03:16:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:45,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892576299] [2023-04-03 03:16:45,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:45,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:45,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:45,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892576299] [2023-04-03 03:16:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892576299] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:45,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122701399] [2023-04-03 03:16:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:45,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:45,865 INFO L87 Difference]: Start difference. First operand 606 states and 762 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:47,263 INFO L93 Difference]: Finished difference Result 1008 states and 1262 transitions. [2023-04-03 03:16:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:47,263 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:47,265 INFO L225 Difference]: With dead ends: 1008 [2023-04-03 03:16:47,266 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:16:47,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:47,267 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 3555 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3555 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:47,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3555 Valid, 2288 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:47,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:16:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 606. [2023-04-03 03:16:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 581 states have (on average 1.3046471600688467) internal successors, (758), 602 states have internal predecessors, (758), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 761 transitions. [2023-04-03 03:16:47,465 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 761 transitions. Word has length 100 [2023-04-03 03:16:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:47,465 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 761 transitions. [2023-04-03 03:16:47,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 761 transitions. [2023-04-03 03:16:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:47,466 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:47,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:47,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-03 03:16:47,467 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:47,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash 630481511, now seen corresponding path program 1 times [2023-04-03 03:16:47,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:47,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187658106] [2023-04-03 03:16:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:47,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:47,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187658106] [2023-04-03 03:16:47,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187658106] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:47,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:47,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:16:47,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982106526] [2023-04-03 03:16:47,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:47,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:16:47,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:47,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:16:47,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:16:47,983 INFO L87 Difference]: Start difference. First operand 606 states and 761 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:50,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:50,380 INFO L93 Difference]: Finished difference Result 1251 states and 1584 transitions. [2023-04-03 03:16:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:16:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:50,383 INFO L225 Difference]: With dead ends: 1251 [2023-04-03 03:16:50,383 INFO L226 Difference]: Without dead ends: 1202 [2023-04-03 03:16:50,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:16:50,384 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 6152 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6152 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:50,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6152 Valid, 2395 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:16:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2023-04-03 03:16:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 610. [2023-04-03 03:16:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 585 states have (on average 1.3025641025641026) internal successors, (762), 606 states have internal predecessors, (762), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 765 transitions. [2023-04-03 03:16:50,597 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 765 transitions. Word has length 100 [2023-04-03 03:16:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:50,597 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 765 transitions. [2023-04-03 03:16:50,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 765 transitions. [2023-04-03 03:16:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:50,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:50,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:50,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-03 03:16:50,599 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:50,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash -414955608, now seen corresponding path program 1 times [2023-04-03 03:16:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:50,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561945205] [2023-04-03 03:16:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:50,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:50,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:50,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561945205] [2023-04-03 03:16:50,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561945205] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:50,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:50,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:50,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803517179] [2023-04-03 03:16:50,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:50,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:50,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:50,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:50,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:50,867 INFO L87 Difference]: Start difference. First operand 610 states and 765 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:52,296 INFO L93 Difference]: Finished difference Result 1006 states and 1258 transitions. [2023-04-03 03:16:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:52,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:52,298 INFO L225 Difference]: With dead ends: 1006 [2023-04-03 03:16:52,298 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:16:52,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:52,299 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 3689 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3689 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:52,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3689 Valid, 2211 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:16:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 610. [2023-04-03 03:16:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 585 states have (on average 1.300854700854701) internal successors, (761), 606 states have internal predecessors, (761), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 764 transitions. [2023-04-03 03:16:52,573 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 764 transitions. Word has length 100 [2023-04-03 03:16:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:52,574 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 764 transitions. [2023-04-03 03:16:52,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 764 transitions. [2023-04-03 03:16:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:52,575 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:52,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:52,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-04-03 03:16:52,576 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:52,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:52,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1433725044, now seen corresponding path program 1 times [2023-04-03 03:16:52,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:52,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513188286] [2023-04-03 03:16:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:52,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:53,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513188286] [2023-04-03 03:16:53,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513188286] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:53,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:53,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:16:53,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88427517] [2023-04-03 03:16:53,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:53,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:16:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:53,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:16:53,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:16:53,148 INFO L87 Difference]: Start difference. First operand 610 states and 764 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:55,812 INFO L93 Difference]: Finished difference Result 1204 states and 1515 transitions. [2023-04-03 03:16:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:16:55,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:55,814 INFO L225 Difference]: With dead ends: 1204 [2023-04-03 03:16:55,814 INFO L226 Difference]: Without dead ends: 1199 [2023-04-03 03:16:55,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:16:55,815 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 6168 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6168 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:55,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6168 Valid, 2732 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 03:16:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-04-03 03:16:56,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 614. [2023-04-03 03:16:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 589 states have (on average 1.298811544991511) internal successors, (765), 610 states have internal predecessors, (765), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 768 transitions. [2023-04-03 03:16:56,004 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 768 transitions. Word has length 100 [2023-04-03 03:16:56,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:56,004 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 768 transitions. [2023-04-03 03:16:56,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:56,005 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 768 transitions. [2023-04-03 03:16:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:56,006 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:56,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:56,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-04-03 03:16:56,006 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:56,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:56,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1587767549, now seen corresponding path program 1 times [2023-04-03 03:16:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:56,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202782256] [2023-04-03 03:16:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:56,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:56,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:56,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202782256] [2023-04-03 03:16:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202782256] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:56,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:56,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:56,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686009604] [2023-04-03 03:16:56,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:56,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:56,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:56,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:56,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:56,277 INFO L87 Difference]: Start difference. First operand 614 states and 768 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:57,693 INFO L93 Difference]: Finished difference Result 1008 states and 1258 transitions. [2023-04-03 03:16:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:57,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:57,695 INFO L225 Difference]: With dead ends: 1008 [2023-04-03 03:16:57,695 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:16:57,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:57,696 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 3697 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3697 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:57,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3697 Valid, 2202 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:57,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:16:57,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 614. [2023-04-03 03:16:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 589 states have (on average 1.2971137521222411) internal successors, (764), 610 states have internal predecessors, (764), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 767 transitions. [2023-04-03 03:16:57,925 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 767 transitions. Word has length 100 [2023-04-03 03:16:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:57,925 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 767 transitions. [2023-04-03 03:16:57,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 767 transitions. [2023-04-03 03:16:57,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:57,926 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:57,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:57,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-04-03 03:16:57,926 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:57,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:57,926 INFO L85 PathProgramCache]: Analyzing trace with hash 67148052, now seen corresponding path program 1 times [2023-04-03 03:16:57,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:57,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046508338] [2023-04-03 03:16:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:57,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:16:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:16:58,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:16:58,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046508338] [2023-04-03 03:16:58,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046508338] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:16:58,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:16:58,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:16:58,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793163177] [2023-04-03 03:16:58,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:16:58,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:16:58,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:16:58,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:16:58,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:16:58,184 INFO L87 Difference]: Start difference. First operand 614 states and 767 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:59,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:16:59,637 INFO L93 Difference]: Finished difference Result 964 states and 1197 transitions. [2023-04-03 03:16:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:16:59,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:16:59,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:16:59,639 INFO L225 Difference]: With dead ends: 964 [2023-04-03 03:16:59,639 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:16:59,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:16:59,640 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 3686 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:16:59,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3686 Valid, 2226 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1827 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:16:59,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:16:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 614. [2023-04-03 03:16:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 589 states have (on average 1.295415959252971) internal successors, (763), 610 states have internal predecessors, (763), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 766 transitions. [2023-04-03 03:16:59,870 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 766 transitions. Word has length 100 [2023-04-03 03:16:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:16:59,870 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 766 transitions. [2023-04-03 03:16:59,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:16:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 766 transitions. [2023-04-03 03:16:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:16:59,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:16:59,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:16:59,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-04-03 03:16:59,871 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:16:59,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:16:59,872 INFO L85 PathProgramCache]: Analyzing trace with hash -317900109, now seen corresponding path program 1 times [2023-04-03 03:16:59,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:16:59,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380060422] [2023-04-03 03:16:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:16:59,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:16:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:00,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:00,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380060422] [2023-04-03 03:17:00,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380060422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:00,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:00,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25747535] [2023-04-03 03:17:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:00,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:00,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:00,100 INFO L87 Difference]: Start difference. First operand 614 states and 766 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:01,580 INFO L93 Difference]: Finished difference Result 1024 states and 1277 transitions. [2023-04-03 03:17:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:01,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:01,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:01,582 INFO L225 Difference]: With dead ends: 1024 [2023-04-03 03:17:01,583 INFO L226 Difference]: Without dead ends: 1007 [2023-04-03 03:17:01,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:01,584 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 1749 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:01,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 2683 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:17:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-04-03 03:17:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 614. [2023-04-03 03:17:01,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 589 states have (on average 1.2937181663837012) internal successors, (762), 610 states have internal predecessors, (762), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 765 transitions. [2023-04-03 03:17:01,821 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 765 transitions. Word has length 100 [2023-04-03 03:17:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:01,821 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 765 transitions. [2023-04-03 03:17:01,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 765 transitions. [2023-04-03 03:17:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:01,822 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:01,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:01,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-04-03 03:17:01,822 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:01,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash -118452090, now seen corresponding path program 1 times [2023-04-03 03:17:01,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:01,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058344684] [2023-04-03 03:17:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:01,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:02,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:02,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058344684] [2023-04-03 03:17:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058344684] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:02,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:02,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278737590] [2023-04-03 03:17:02,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:02,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:02,249 INFO L87 Difference]: Start difference. First operand 614 states and 765 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:04,699 INFO L93 Difference]: Finished difference Result 1204 states and 1511 transitions. [2023-04-03 03:17:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:17:04,699 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:04,701 INFO L225 Difference]: With dead ends: 1204 [2023-04-03 03:17:04,701 INFO L226 Difference]: Without dead ends: 1199 [2023-04-03 03:17:04,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:17:04,702 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 6129 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6129 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:04,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6129 Valid, 2423 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:17:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-04-03 03:17:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 618. [2023-04-03 03:17:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 593 states have (on average 1.2917369308600337) internal successors, (766), 614 states have internal predecessors, (766), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 769 transitions. [2023-04-03 03:17:04,898 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 769 transitions. Word has length 100 [2023-04-03 03:17:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:04,898 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 769 transitions. [2023-04-03 03:17:04,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 769 transitions. [2023-04-03 03:17:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:04,899 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:04,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:04,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-04-03 03:17:04,899 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:04,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:04,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1155130850, now seen corresponding path program 1 times [2023-04-03 03:17:04,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:04,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346172474] [2023-04-03 03:17:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:04,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:05,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:05,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346172474] [2023-04-03 03:17:05,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346172474] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:05,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:05,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:05,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484592020] [2023-04-03 03:17:05,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:05,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:05,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:05,173 INFO L87 Difference]: Start difference. First operand 618 states and 769 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:06,573 INFO L93 Difference]: Finished difference Result 1008 states and 1254 transitions. [2023-04-03 03:17:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:06,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:06,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:06,575 INFO L225 Difference]: With dead ends: 1008 [2023-04-03 03:17:06,576 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:06,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:17:06,576 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 3641 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3641 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:06,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3641 Valid, 2238 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:06,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:06,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 618. [2023-04-03 03:17:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 593 states have (on average 1.2900505902192243) internal successors, (765), 614 states have internal predecessors, (765), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 768 transitions. [2023-04-03 03:17:06,842 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 768 transitions. Word has length 100 [2023-04-03 03:17:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:06,842 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 768 transitions. [2023-04-03 03:17:06,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 768 transitions. [2023-04-03 03:17:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:06,844 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:06,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:06,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-04-03 03:17:06,844 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:06,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1315879545, now seen corresponding path program 1 times [2023-04-03 03:17:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310097976] [2023-04-03 03:17:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:07,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:07,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310097976] [2023-04-03 03:17:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310097976] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812140316] [2023-04-03 03:17:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:07,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:07,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:07,103 INFO L87 Difference]: Start difference. First operand 618 states and 768 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:08,690 INFO L93 Difference]: Finished difference Result 1008 states and 1253 transitions. [2023-04-03 03:17:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:08,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:08,693 INFO L225 Difference]: With dead ends: 1008 [2023-04-03 03:17:08,693 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:08,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:08,694 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 3304 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3304 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:08,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3304 Valid, 2313 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:17:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 618. [2023-04-03 03:17:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 593 states have (on average 1.2883642495784149) internal successors, (764), 614 states have internal predecessors, (764), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 767 transitions. [2023-04-03 03:17:08,994 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 767 transitions. Word has length 100 [2023-04-03 03:17:08,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:08,995 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 767 transitions. [2023-04-03 03:17:08,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 767 transitions. [2023-04-03 03:17:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:08,996 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:08,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-04-03 03:17:08,996 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:08,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash 43052278, now seen corresponding path program 1 times [2023-04-03 03:17:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:08,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798151894] [2023-04-03 03:17:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:09,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:09,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798151894] [2023-04-03 03:17:09,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798151894] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:09,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:09,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:09,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299151873] [2023-04-03 03:17:09,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:09,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:09,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:09,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:09,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:09,394 INFO L87 Difference]: Start difference. First operand 618 states and 767 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:11,971 INFO L93 Difference]: Finished difference Result 1204 states and 1508 transitions. [2023-04-03 03:17:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:17:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:11,973 INFO L225 Difference]: With dead ends: 1204 [2023-04-03 03:17:11,973 INFO L226 Difference]: Without dead ends: 1199 [2023-04-03 03:17:11,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:17:11,974 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 5561 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:11,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5561 Valid, 2498 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:17:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-04-03 03:17:12,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 622. [2023-04-03 03:17:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 597 states have (on average 1.2864321608040201) internal successors, (768), 618 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) [2023-04-03 03:17:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 771 transitions. [2023-04-03 03:17:12,197 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 771 transitions. Word has length 100 [2023-04-03 03:17:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:12,197 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 771 transitions. [2023-04-03 03:17:12,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 771 transitions. [2023-04-03 03:17:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:12,198 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:12,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-04-03 03:17:12,199 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:12,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash -760838691, now seen corresponding path program 1 times [2023-04-03 03:17:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:12,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595166682] [2023-04-03 03:17:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:12,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:12,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595166682] [2023-04-03 03:17:12,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595166682] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:12,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:12,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:12,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453324931] [2023-04-03 03:17:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:12,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:12,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:12,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:12,623 INFO L87 Difference]: Start difference. First operand 622 states and 771 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:15,187 INFO L93 Difference]: Finished difference Result 1251 states and 1574 transitions. [2023-04-03 03:17:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:17:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:15,189 INFO L225 Difference]: With dead ends: 1251 [2023-04-03 03:17:15,189 INFO L226 Difference]: Without dead ends: 1202 [2023-04-03 03:17:15,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:17:15,189 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 6100 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6100 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:15,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6100 Valid, 2751 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 03:17:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2023-04-03 03:17:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 626. [2023-04-03 03:17:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 601 states have (on average 1.2845257903494176) internal successors, (772), 622 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) [2023-04-03 03:17:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 775 transitions. [2023-04-03 03:17:15,413 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 775 transitions. Word has length 100 [2023-04-03 03:17:15,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:15,413 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 775 transitions. [2023-04-03 03:17:15,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:15,413 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 775 transitions. [2023-04-03 03:17:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:15,414 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:15,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:15,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-04-03 03:17:15,414 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:15,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash 380794794, now seen corresponding path program 1 times [2023-04-03 03:17:15,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:15,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173567897] [2023-04-03 03:17:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:15,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:15,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:15,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173567897] [2023-04-03 03:17:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173567897] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:15,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:15,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135614428] [2023-04-03 03:17:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:15,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:15,652 INFO L87 Difference]: Start difference. First operand 626 states and 775 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:17,105 INFO L93 Difference]: Finished difference Result 1006 states and 1248 transitions. [2023-04-03 03:17:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:17,106 INFO L225 Difference]: With dead ends: 1006 [2023-04-03 03:17:17,106 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:17,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:17:17,107 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 3491 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3491 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:17,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3491 Valid, 2329 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 626. [2023-04-03 03:17:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 601 states have (on average 1.2828618968386023) internal successors, (771), 622 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) [2023-04-03 03:17:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 774 transitions. [2023-04-03 03:17:17,322 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 774 transitions. Word has length 100 [2023-04-03 03:17:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:17,322 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 774 transitions. [2023-04-03 03:17:17,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:17,323 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 774 transitions. [2023-04-03 03:17:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:17,323 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:17,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:17,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-04-03 03:17:17,324 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:17,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:17,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1461513331, now seen corresponding path program 1 times [2023-04-03 03:17:17,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:17,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279227526] [2023-04-03 03:17:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:17,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:17,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279227526] [2023-04-03 03:17:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279227526] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:17,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:17,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518541408] [2023-04-03 03:17:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:17,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:17,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:17,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:17,557 INFO L87 Difference]: Start difference. First operand 626 states and 774 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:19,026 INFO L93 Difference]: Finished difference Result 1006 states and 1247 transitions. [2023-04-03 03:17:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:19,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:19,028 INFO L225 Difference]: With dead ends: 1006 [2023-04-03 03:17:19,028 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:19,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:19,029 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 3249 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3249 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:19,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3249 Valid, 2355 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 626. [2023-04-03 03:17:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 601 states have (on average 1.281198003327787) internal successors, (770), 622 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) [2023-04-03 03:17:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 773 transitions. [2023-04-03 03:17:19,328 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 773 transitions. Word has length 100 [2023-04-03 03:17:19,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:19,328 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 773 transitions. [2023-04-03 03:17:19,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:19,328 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 773 transitions. [2023-04-03 03:17:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:19,329 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:19,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:19,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-04-03 03:17:19,330 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:19,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:19,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1441597639, now seen corresponding path program 1 times [2023-04-03 03:17:19,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:19,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794201116] [2023-04-03 03:17:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:19,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:19,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794201116] [2023-04-03 03:17:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794201116] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:19,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:19,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418464821] [2023-04-03 03:17:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:19,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:19,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:19,823 INFO L87 Difference]: Start difference. First operand 626 states and 773 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:22,507 INFO L93 Difference]: Finished difference Result 1251 states and 1570 transitions. [2023-04-03 03:17:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 03:17:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:22,509 INFO L225 Difference]: With dead ends: 1251 [2023-04-03 03:17:22,509 INFO L226 Difference]: Without dead ends: 1202 [2023-04-03 03:17:22,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:17:22,509 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 5085 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5085 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:22,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5085 Valid, 2403 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 03:17:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2023-04-03 03:17:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 630. [2023-04-03 03:17:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 605 states have (on average 1.2793388429752066) internal successors, (774), 626 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) [2023-04-03 03:17:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 777 transitions. [2023-04-03 03:17:22,753 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 777 transitions. Word has length 100 [2023-04-03 03:17:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:22,753 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 777 transitions. [2023-04-03 03:17:22,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 777 transitions. [2023-04-03 03:17:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:22,754 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:22,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:22,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-04-03 03:17:22,755 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:22,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1184669157, now seen corresponding path program 1 times [2023-04-03 03:17:22,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:22,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390969558] [2023-04-03 03:17:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:22,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:23,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390969558] [2023-04-03 03:17:23,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390969558] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:23,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:23,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:23,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45552204] [2023-04-03 03:17:23,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:23,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:23,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:23,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:23,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:23,036 INFO L87 Difference]: Start difference. First operand 630 states and 777 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:24,558 INFO L93 Difference]: Finished difference Result 1006 states and 1244 transitions. [2023-04-03 03:17:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:24,559 INFO L225 Difference]: With dead ends: 1006 [2023-04-03 03:17:24,559 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:24,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:24,560 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 2674 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:24,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 2658 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:24,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 630. [2023-04-03 03:17:24,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 605 states have (on average 1.2776859504132232) internal successors, (773), 626 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) [2023-04-03 03:17:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 776 transitions. [2023-04-03 03:17:24,784 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 776 transitions. Word has length 100 [2023-04-03 03:17:24,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:24,784 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 776 transitions. [2023-04-03 03:17:24,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:24,784 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 776 transitions. [2023-04-03 03:17:24,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:24,785 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:24,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:24,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-04-03 03:17:24,785 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:24,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1209742088, now seen corresponding path program 1 times [2023-04-03 03:17:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580874916] [2023-04-03 03:17:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:25,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:25,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580874916] [2023-04-03 03:17:25,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580874916] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:25,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:25,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:25,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089623565] [2023-04-03 03:17:25,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:25,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:25,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:25,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:25,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:25,004 INFO L87 Difference]: Start difference. First operand 630 states and 776 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:26,489 INFO L93 Difference]: Finished difference Result 1095 states and 1355 transitions. [2023-04-03 03:17:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:26,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:26,490 INFO L225 Difference]: With dead ends: 1095 [2023-04-03 03:17:26,490 INFO L226 Difference]: Without dead ends: 1031 [2023-04-03 03:17:26,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:26,491 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1789 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:26,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2644 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-04-03 03:17:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 630. [2023-04-03 03:17:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 605 states have (on average 1.2760330578512398) internal successors, (772), 626 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) [2023-04-03 03:17:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 775 transitions. [2023-04-03 03:17:26,722 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 775 transitions. Word has length 100 [2023-04-03 03:17:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:26,723 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 775 transitions. [2023-04-03 03:17:26,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 775 transitions. [2023-04-03 03:17:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:26,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:26,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:26,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-04-03 03:17:26,724 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr18ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:26,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash -719414424, now seen corresponding path program 1 times [2023-04-03 03:17:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:26,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904718795] [2023-04-03 03:17:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:26,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:26,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:26,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904718795] [2023-04-03 03:17:26,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904718795] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:26,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:26,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:26,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083773046] [2023-04-03 03:17:26,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:26,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:26,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:26,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:26,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:26,966 INFO L87 Difference]: Start difference. First operand 630 states and 775 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:28,473 INFO L93 Difference]: Finished difference Result 1011 states and 1247 transitions. [2023-04-03 03:17:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:28,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:28,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:28,474 INFO L225 Difference]: With dead ends: 1011 [2023-04-03 03:17:28,474 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:28,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:17:28,475 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 3455 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3455 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:28,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3455 Valid, 2351 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 630. [2023-04-03 03:17:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 605 states have (on average 1.2743801652892561) internal successors, (771), 626 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) [2023-04-03 03:17:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 774 transitions. [2023-04-03 03:17:28,714 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 774 transitions. Word has length 100 [2023-04-03 03:17:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:28,714 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 774 transitions. [2023-04-03 03:17:28,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 774 transitions. [2023-04-03 03:17:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:28,715 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:28,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-04-03 03:17:28,715 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:28,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1880629028, now seen corresponding path program 1 times [2023-04-03 03:17:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:28,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037868995] [2023-04-03 03:17:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:28,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:28,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:28,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037868995] [2023-04-03 03:17:28,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037868995] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:28,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:28,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:28,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235112929] [2023-04-03 03:17:28,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:28,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:28,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:28,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:28,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:28,943 INFO L87 Difference]: Start difference. First operand 630 states and 774 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:30,465 INFO L93 Difference]: Finished difference Result 1011 states and 1246 transitions. [2023-04-03 03:17:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:30,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:30,471 INFO L225 Difference]: With dead ends: 1011 [2023-04-03 03:17:30,471 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:30,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:30,471 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 2594 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:30,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2594 Valid, 2546 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 03:17:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 630. [2023-04-03 03:17:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 605 states have (on average 1.2727272727272727) internal successors, (770), 626 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) [2023-04-03 03:17:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 773 transitions. [2023-04-03 03:17:30,721 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 773 transitions. Word has length 100 [2023-04-03 03:17:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:30,721 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 773 transitions. [2023-04-03 03:17:30,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:30,721 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 773 transitions. [2023-04-03 03:17:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:30,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:30,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:30,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-04-03 03:17:30,723 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:30,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash 244029529, now seen corresponding path program 1 times [2023-04-03 03:17:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:30,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246214981] [2023-04-03 03:17:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:31,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246214981] [2023-04-03 03:17:31,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246214981] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:31,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:31,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:31,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701747911] [2023-04-03 03:17:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:31,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:31,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:31,030 INFO L87 Difference]: Start difference. First operand 630 states and 773 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:32,674 INFO L93 Difference]: Finished difference Result 1008 states and 1241 transitions. [2023-04-03 03:17:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:32,674 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:32,675 INFO L225 Difference]: With dead ends: 1008 [2023-04-03 03:17:32,675 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:32,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:32,676 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 2597 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2597 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:32,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2597 Valid, 2562 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 03:17:32,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 630. [2023-04-03 03:17:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 605 states have (on average 1.2710743801652893) internal successors, (769), 626 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) [2023-04-03 03:17:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 772 transitions. [2023-04-03 03:17:32,906 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 772 transitions. Word has length 100 [2023-04-03 03:17:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:32,906 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 772 transitions. [2023-04-03 03:17:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 772 transitions. [2023-04-03 03:17:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:32,907 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:32,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:32,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-04-03 03:17:32,908 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:32,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1706217670, now seen corresponding path program 1 times [2023-04-03 03:17:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:32,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773128471] [2023-04-03 03:17:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:32,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:33,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773128471] [2023-04-03 03:17:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773128471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002243572] [2023-04-03 03:17:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:33,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:33,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:33,175 INFO L87 Difference]: Start difference. First operand 630 states and 772 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:34,645 INFO L93 Difference]: Finished difference Result 1008 states and 1240 transitions. [2023-04-03 03:17:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:34,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 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 100 [2023-04-03 03:17:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:34,647 INFO L225 Difference]: With dead ends: 1008 [2023-04-03 03:17:34,647 INFO L226 Difference]: Without dead ends: 959 [2023-04-03 03:17:34,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:34,647 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 3251 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:34,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3251 Valid, 2327 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 03:17:34,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-04-03 03:17:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 630. [2023-04-03 03:17:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 605 states have (on average 1.2694214876033059) internal successors, (768), 626 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) [2023-04-03 03:17:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 771 transitions. [2023-04-03 03:17:34,900 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 771 transitions. Word has length 100 [2023-04-03 03:17:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:34,900 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 771 transitions. [2023-04-03 03:17:34,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 8 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 771 transitions. [2023-04-03 03:17:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-03 03:17:34,901 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:34,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:34,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-04-03 03:17:34,902 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:34,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:34,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1035068771, now seen corresponding path program 1 times [2023-04-03 03:17:34,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:34,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113533504] [2023-04-03 03:17:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:34,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:35,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113533504] [2023-04-03 03:17:35,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113533504] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:35,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:35,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 03:17:35,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481057348] [2023-04-03 03:17:35,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:35,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 03:17:35,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:35,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 03:17:35,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 03:17:35,298 INFO L87 Difference]: Start difference. First operand 630 states and 771 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:36,577 INFO L93 Difference]: Finished difference Result 1282 states and 1532 transitions. [2023-04-03 03:17:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:17:36,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-03 03:17:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:36,579 INFO L225 Difference]: With dead ends: 1282 [2023-04-03 03:17:36,580 INFO L226 Difference]: Without dead ends: 1015 [2023-04-03 03:17:36,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-04-03 03:17:36,580 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 2687 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:36,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 2551 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 03:17:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-04-03 03:17:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 410. [2023-04-03 03:17:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 391 states have (on average 1.2429667519181586) internal successors, (486), 406 states have internal predecessors, (486), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 489 transitions. [2023-04-03 03:17:36,815 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 489 transitions. Word has length 100 [2023-04-03 03:17:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:36,815 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 489 transitions. [2023-04-03 03:17:36,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 489 transitions. [2023-04-03 03:17:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:17:36,816 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:36,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:36,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-04-03 03:17:36,816 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:36,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:36,816 INFO L85 PathProgramCache]: Analyzing trace with hash 223948678, now seen corresponding path program 1 times [2023-04-03 03:17:36,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:36,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376462088] [2023-04-03 03:17:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:36,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:37,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:37,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376462088] [2023-04-03 03:17:37,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376462088] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:37,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:37,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:37,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122591797] [2023-04-03 03:17:37,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:37,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:37,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:37,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:37,073 INFO L87 Difference]: Start difference. First operand 410 states and 489 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:38,353 INFO L93 Difference]: Finished difference Result 712 states and 864 transitions. [2023-04-03 03:17:38,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:38,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 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 101 [2023-04-03 03:17:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:38,354 INFO L225 Difference]: With dead ends: 712 [2023-04-03 03:17:38,354 INFO L226 Difference]: Without dead ends: 660 [2023-04-03 03:17:38,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:38,355 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1193 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:38,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1571 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:17:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-04-03 03:17:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 406. [2023-04-03 03:17:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 387 states have (on average 1.2428940568475453) internal successors, (481), 402 states have internal predecessors, (481), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 484 transitions. [2023-04-03 03:17:38,555 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 484 transitions. Word has length 101 [2023-04-03 03:17:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:38,556 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 484 transitions. [2023-04-03 03:17:38,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:38,556 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 484 transitions. [2023-04-03 03:17:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:17:38,556 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:38,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:38,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-04-03 03:17:38,557 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:38,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 234031666, now seen corresponding path program 1 times [2023-04-03 03:17:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216357338] [2023-04-03 03:17:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:38,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:38,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216357338] [2023-04-03 03:17:38,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216357338] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:38,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:38,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:38,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526438049] [2023-04-03 03:17:38,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:38,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:38,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:38,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:38,849 INFO L87 Difference]: Start difference. First operand 406 states and 484 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:40,067 INFO L93 Difference]: Finished difference Result 709 states and 860 transitions. [2023-04-03 03:17:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:40,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 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 101 [2023-04-03 03:17:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:40,068 INFO L225 Difference]: With dead ends: 709 [2023-04-03 03:17:40,068 INFO L226 Difference]: Without dead ends: 660 [2023-04-03 03:17:40,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:40,068 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1200 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:40,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 1540 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:17:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-04-03 03:17:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 402. [2023-04-03 03:17:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 383 states have (on average 1.2428198433420365) internal successors, (476), 398 states have internal predecessors, (476), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 479 transitions. [2023-04-03 03:17:40,266 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 479 transitions. Word has length 101 [2023-04-03 03:17:40,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:40,267 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 479 transitions. [2023-04-03 03:17:40,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 479 transitions. [2023-04-03 03:17:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:17:40,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:40,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:40,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-04-03 03:17:40,268 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:40,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2090335067, now seen corresponding path program 1 times [2023-04-03 03:17:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:40,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287729784] [2023-04-03 03:17:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:40,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:40,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:40,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287729784] [2023-04-03 03:17:40,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287729784] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:40,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405960063] [2023-04-03 03:17:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:40,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:40,527 INFO L87 Difference]: Start difference. First operand 402 states and 479 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:41,696 INFO L93 Difference]: Finished difference Result 665 states and 799 transitions. [2023-04-03 03:17:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:41,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 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 101 [2023-04-03 03:17:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:41,697 INFO L225 Difference]: With dead ends: 665 [2023-04-03 03:17:41,697 INFO L226 Difference]: Without dead ends: 660 [2023-04-03 03:17:41,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:41,698 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1693 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:41,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1693 Valid, 1591 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:17:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-04-03 03:17:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 398. [2023-04-03 03:17:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 379 states have (on average 1.2427440633245384) internal successors, (471), 394 states have internal predecessors, (471), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 474 transitions. [2023-04-03 03:17:41,896 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 474 transitions. Word has length 101 [2023-04-03 03:17:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:41,896 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 474 transitions. [2023-04-03 03:17:41,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 474 transitions. [2023-04-03 03:17:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 03:17:41,897 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:41,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:41,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-04-03 03:17:41,898 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:41,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:41,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1217484060, now seen corresponding path program 1 times [2023-04-03 03:17:41,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:41,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980977490] [2023-04-03 03:17:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:42,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:42,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980977490] [2023-04-03 03:17:42,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980977490] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:42,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:42,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:17:42,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240733299] [2023-04-03 03:17:42,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:42,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:17:42,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:42,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:17:42,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:17:42,192 INFO L87 Difference]: Start difference. First operand 398 states and 474 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:43,453 INFO L93 Difference]: Finished difference Result 665 states and 798 transitions. [2023-04-03 03:17:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:17:43,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 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 101 [2023-04-03 03:17:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:43,455 INFO L225 Difference]: With dead ends: 665 [2023-04-03 03:17:43,455 INFO L226 Difference]: Without dead ends: 660 [2023-04-03 03:17:43,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:17:43,456 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2156 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:43,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 1602 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:17:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-04-03 03:17:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 394. [2023-04-03 03:17:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 375 states have (on average 1.2426666666666666) internal successors, (466), 390 states have internal predecessors, (466), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 469 transitions. [2023-04-03 03:17:43,692 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 469 transitions. Word has length 101 [2023-04-03 03:17:43,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:43,692 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 469 transitions. [2023-04-03 03:17:43,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:43,692 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 469 transitions. [2023-04-03 03:17:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:17:43,693 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:43,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:43,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-04-03 03:17:43,693 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:43,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash -647112058, now seen corresponding path program 1 times [2023-04-03 03:17:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:43,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672168479] [2023-04-03 03:17:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:44,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:44,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672168479] [2023-04-03 03:17:44,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672168479] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:44,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:44,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:44,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104487191] [2023-04-03 03:17:44,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:44,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:44,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:44,165 INFO L87 Difference]: Start difference. First operand 394 states and 469 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:45,714 INFO L93 Difference]: Finished difference Result 835 states and 1024 transitions. [2023-04-03 03:17:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:17:45,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:17:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:45,715 INFO L225 Difference]: With dead ends: 835 [2023-04-03 03:17:45,715 INFO L226 Difference]: Without dead ends: 772 [2023-04-03 03:17:45,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:17:45,716 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 2368 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:45,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 4466 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 03:17:45,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-04-03 03:17:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 378. [2023-04-03 03:17:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 361 states have (on average 1.2382271468144044) internal successors, (447), 374 states have internal predecessors, (447), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 450 transitions. [2023-04-03 03:17:45,904 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 450 transitions. Word has length 102 [2023-04-03 03:17:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:45,904 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 450 transitions. [2023-04-03 03:17:45,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 450 transitions. [2023-04-03 03:17:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:17:45,905 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:45,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:45,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-04-03 03:17:45,905 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:45,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2711545, now seen corresponding path program 1 times [2023-04-03 03:17:45,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:45,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169079330] [2023-04-03 03:17:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:45,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:47,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:47,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169079330] [2023-04-03 03:17:47,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169079330] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:47,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:47,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2023-04-03 03:17:47,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231369025] [2023-04-03 03:17:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-03 03:17:47,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-03 03:17:47,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-04-03 03:17:47,849 INFO L87 Difference]: Start difference. First operand 378 states and 450 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:17:58,126 INFO L93 Difference]: Finished difference Result 1643 states and 1976 transitions. [2023-04-03 03:17:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-03 03:17:58,127 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:17:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:17:58,128 INFO L225 Difference]: With dead ends: 1643 [2023-04-03 03:17:58,128 INFO L226 Difference]: Without dead ends: 1589 [2023-04-03 03:17:58,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=560, Invalid=3100, Unknown=0, NotChecked=0, Total=3660 [2023-04-03 03:17:58,129 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 4710 mSDsluCounter, 22521 mSDsCounter, 0 mSdLazyCounter, 13034 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 23904 SdHoareTripleChecker+Invalid, 13087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 13034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:17:58,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4710 Valid, 23904 Invalid, 13087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 13034 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-03 03:17:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2023-04-03 03:17:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 402. [2023-04-03 03:17:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 385 states have (on average 1.238961038961039) internal successors, (477), 398 states have internal predecessors, (477), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 480 transitions. [2023-04-03 03:17:58,379 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 480 transitions. Word has length 102 [2023-04-03 03:17:58,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:17:58,379 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 480 transitions. [2023-04-03 03:17:58,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:17:58,379 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 480 transitions. [2023-04-03 03:17:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:17:58,380 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:17:58,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:17:58,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-04-03 03:17:58,380 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:17:58,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:17:58,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1564041392, now seen corresponding path program 1 times [2023-04-03 03:17:58,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:17:58,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502470649] [2023-04-03 03:17:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:17:58,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:17:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:17:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:17:58,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:17:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502470649] [2023-04-03 03:17:58,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502470649] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:17:58,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:17:58,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:17:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511335523] [2023-04-03 03:17:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:17:58,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:17:58,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:17:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:17:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:17:58,846 INFO L87 Difference]: Start difference. First operand 402 states and 480 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:00,217 INFO L93 Difference]: Finished difference Result 629 states and 748 transitions. [2023-04-03 03:18:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:18:00,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:18:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:00,218 INFO L225 Difference]: With dead ends: 629 [2023-04-03 03:18:00,218 INFO L226 Difference]: Without dead ends: 578 [2023-04-03 03:18:00,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:18:00,218 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1908 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:00,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 2553 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:18:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-04-03 03:18:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 398. [2023-04-03 03:18:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 382 states have (on average 1.2356020942408377) internal successors, (472), 394 states have internal predecessors, (472), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 475 transitions. [2023-04-03 03:18:00,464 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 475 transitions. Word has length 102 [2023-04-03 03:18:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:00,464 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 475 transitions. [2023-04-03 03:18:00,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 475 transitions. [2023-04-03 03:18:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:18:00,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:00,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:00,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-04-03 03:18:00,465 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:00,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:00,465 INFO L85 PathProgramCache]: Analyzing trace with hash 942616020, now seen corresponding path program 1 times [2023-04-03 03:18:00,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:00,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024328521] [2023-04-03 03:18:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:00,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:00,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:00,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024328521] [2023-04-03 03:18:00,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024328521] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:00,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:00,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455369032] [2023-04-03 03:18:00,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:00,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:00,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:00,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:00,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:00,912 INFO L87 Difference]: Start difference. First operand 398 states and 475 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:02,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:02,507 INFO L93 Difference]: Finished difference Result 866 states and 1068 transitions. [2023-04-03 03:18:02,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:18:02,508 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:18:02,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:02,509 INFO L225 Difference]: With dead ends: 866 [2023-04-03 03:18:02,509 INFO L226 Difference]: Without dead ends: 756 [2023-04-03 03:18:02,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:18:02,510 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 2094 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:02,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 4356 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:18:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-04-03 03:18:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 335. [2023-04-03 03:18:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 323 states have (on average 1.2198142414860682) internal successors, (394), 331 states have internal predecessors, (394), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 397 transitions. [2023-04-03 03:18:02,762 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 397 transitions. Word has length 102 [2023-04-03 03:18:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:02,762 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 397 transitions. [2023-04-03 03:18:02,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 397 transitions. [2023-04-03 03:18:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:18:02,763 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:02,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:02,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-04-03 03:18:02,763 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:02,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1318103961, now seen corresponding path program 1 times [2023-04-03 03:18:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:02,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676374107] [2023-04-03 03:18:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:03,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676374107] [2023-04-03 03:18:03,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676374107] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:03,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553003020] [2023-04-03 03:18:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:03,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:03,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:03,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:03,207 INFO L87 Difference]: Start difference. First operand 335 states and 397 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:04,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:04,553 INFO L93 Difference]: Finished difference Result 748 states and 923 transitions. [2023-04-03 03:18:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:18:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:18:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:04,554 INFO L225 Difference]: With dead ends: 748 [2023-04-03 03:18:04,554 INFO L226 Difference]: Without dead ends: 653 [2023-04-03 03:18:04,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:18:04,555 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 2056 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:04,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 2394 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:18:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-04-03 03:18:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 287. [2023-04-03 03:18:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 276 states have (on average 1.2028985507246377) internal successors, (332), 283 states have internal predecessors, (332), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 335 transitions. [2023-04-03 03:18:04,760 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 335 transitions. Word has length 102 [2023-04-03 03:18:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:04,760 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 335 transitions. [2023-04-03 03:18:04,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 335 transitions. [2023-04-03 03:18:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-03 03:18:04,761 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:04,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:04,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-04-03 03:18:04,761 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:04,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:04,762 INFO L85 PathProgramCache]: Analyzing trace with hash -894091600, now seen corresponding path program 1 times [2023-04-03 03:18:04,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:04,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319891774] [2023-04-03 03:18:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:04,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:05,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:05,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319891774] [2023-04-03 03:18:05,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319891774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:05,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:05,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:05,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167234239] [2023-04-03 03:18:05,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:05,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:05,155 INFO L87 Difference]: Start difference. First operand 287 states and 335 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:06,303 INFO L93 Difference]: Finished difference Result 669 states and 813 transitions. [2023-04-03 03:18:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:18:06,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-03 03:18:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:06,304 INFO L225 Difference]: With dead ends: 669 [2023-04-03 03:18:06,304 INFO L226 Difference]: Without dead ends: 553 [2023-04-03 03:18:06,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:18:06,305 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1278 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:06,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 2615 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:18:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-04-03 03:18:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 218. [2023-04-03 03:18:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 211 states have (on average 1.1848341232227488) internal successors, (250), 214 states have internal predecessors, (250), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 253 transitions. [2023-04-03 03:18:06,525 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 253 transitions. Word has length 102 [2023-04-03 03:18:06,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:06,525 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 253 transitions. [2023-04-03 03:18:06,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:06,525 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 253 transitions. [2023-04-03 03:18:06,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:18:06,526 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:06,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:06,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-04-03 03:18:06,526 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:06,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -664427507, now seen corresponding path program 1 times [2023-04-03 03:18:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:06,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108209558] [2023-04-03 03:18:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:06,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:06,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108209558] [2023-04-03 03:18:06,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108209558] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:06,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:06,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 03:18:06,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939950090] [2023-04-03 03:18:06,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:06,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 03:18:06,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:06,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 03:18:06,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 03:18:06,765 INFO L87 Difference]: Start difference. First operand 218 states and 253 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:08,050 INFO L93 Difference]: Finished difference Result 453 states and 554 transitions. [2023-04-03 03:18:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 03:18:08,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-03 03:18:08,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:08,051 INFO L225 Difference]: With dead ends: 453 [2023-04-03 03:18:08,051 INFO L226 Difference]: Without dead ends: 388 [2023-04-03 03:18:08,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:18:08,051 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 884 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:08,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 794 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 03:18:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-04-03 03:18:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 218. [2023-04-03 03:18:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 211 states have (on average 1.180094786729858) internal successors, (249), 214 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 252 transitions. [2023-04-03 03:18:08,236 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 252 transitions. Word has length 103 [2023-04-03 03:18:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:08,236 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 252 transitions. [2023-04-03 03:18:08,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 252 transitions. [2023-04-03 03:18:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-03 03:18:08,237 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:08,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:08,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-04-03 03:18:08,237 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:08,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2055717019, now seen corresponding path program 1 times [2023-04-03 03:18:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500078756] [2023-04-03 03:18:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:08,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:08,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500078756] [2023-04-03 03:18:08,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500078756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:08,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:08,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274663710] [2023-04-03 03:18:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:08,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:08,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:08,645 INFO L87 Difference]: Start difference. First operand 218 states and 252 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:09,748 INFO L93 Difference]: Finished difference Result 487 states and 592 transitions. [2023-04-03 03:18:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:18:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-03 03:18:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:09,749 INFO L225 Difference]: With dead ends: 487 [2023-04-03 03:18:09,749 INFO L226 Difference]: Without dead ends: 403 [2023-04-03 03:18:09,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 03:18:09,749 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 834 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:09,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2294 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:18:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-04-03 03:18:09,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 165. [2023-04-03 03:18:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.15) internal successors, (184), 161 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 187 transitions. [2023-04-03 03:18:09,914 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 187 transitions. Word has length 103 [2023-04-03 03:18:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:09,914 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 187 transitions. [2023-04-03 03:18:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 187 transitions. [2023-04-03 03:18:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-03 03:18:09,915 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:09,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-04-03 03:18:09,915 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:09,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1674271837, now seen corresponding path program 1 times [2023-04-03 03:18:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476506072] [2023-04-03 03:18:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:11,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476506072] [2023-04-03 03:18:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476506072] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:11,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:11,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2023-04-03 03:18:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082190963] [2023-04-03 03:18:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:11,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-03 03:18:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-03 03:18:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2023-04-03 03:18:11,833 INFO L87 Difference]: Start difference. First operand 165 states and 187 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:17,296 INFO L93 Difference]: Finished difference Result 756 states and 923 transitions. [2023-04-03 03:18:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-03 03:18:17,297 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2023-04-03 03:18:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:17,298 INFO L225 Difference]: With dead ends: 756 [2023-04-03 03:18:17,298 INFO L226 Difference]: Without dead ends: 750 [2023-04-03 03:18:17,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=586, Invalid=3074, Unknown=0, NotChecked=0, Total=3660 [2023-04-03 03:18:17,298 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 2301 mSDsluCounter, 9214 mSDsCounter, 0 mSdLazyCounter, 4661 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 9796 SdHoareTripleChecker+Invalid, 4709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:17,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 9796 Invalid, 4709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4661 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-03 03:18:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-04-03 03:18:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 191. [2023-04-03 03:18:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.1612903225806452) internal successors, (216), 187 states have internal predecessors, (216), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 219 transitions. [2023-04-03 03:18:17,499 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 219 transitions. Word has length 105 [2023-04-03 03:18:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:17,499 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 219 transitions. [2023-04-03 03:18:17,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 219 transitions. [2023-04-03 03:18:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-03 03:18:17,500 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:17,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:17,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-04-03 03:18:17,500 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:17,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1828723061, now seen corresponding path program 1 times [2023-04-03 03:18:17,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:17,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104972885] [2023-04-03 03:18:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:17,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:17,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:17,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104972885] [2023-04-03 03:18:17,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104972885] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:17,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:17,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:18:17,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197831779] [2023-04-03 03:18:17,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:17,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:18:17,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:17,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:18:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:18:17,887 INFO L87 Difference]: Start difference. First operand 191 states and 219 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:18,940 INFO L93 Difference]: Finished difference Result 359 states and 435 transitions. [2023-04-03 03:18:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 03:18:18,941 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-04-03 03:18:18,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:18,941 INFO L225 Difference]: With dead ends: 359 [2023-04-03 03:18:18,941 INFO L226 Difference]: Without dead ends: 353 [2023-04-03 03:18:18,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:18:18,942 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 714 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:18,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1530 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:18:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-04-03 03:18:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 159. [2023-04-03 03:18:19,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.1483870967741936) internal successors, (178), 155 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2023-04-03 03:18:19,120 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 106 [2023-04-03 03:18:19,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:19,121 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2023-04-03 03:18:19,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2023-04-03 03:18:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-03 03:18:19,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:19,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:19,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-04-03 03:18:19,121 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:19,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1457179166, now seen corresponding path program 1 times [2023-04-03 03:18:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:19,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661338711] [2023-04-03 03:18:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:19,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:19,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661338711] [2023-04-03 03:18:19,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661338711] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:19,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:19,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:18:19,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005849182] [2023-04-03 03:18:19,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:19,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:18:19,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:18:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:19,254 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:19,664 INFO L93 Difference]: Finished difference Result 253 states and 305 transitions. [2023-04-03 03:18:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:18:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2023-04-03 03:18:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:19,665 INFO L225 Difference]: With dead ends: 253 [2023-04-03 03:18:19,665 INFO L226 Difference]: Without dead ends: 206 [2023-04-03 03:18:19,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:19,666 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 74 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:19,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 344 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:18:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-04-03 03:18:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 200. [2023-04-03 03:18:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.1887755102040816) internal successors, (233), 196 states have internal predecessors, (233), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 236 transitions. [2023-04-03 03:18:19,981 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 236 transitions. Word has length 123 [2023-04-03 03:18:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:19,981 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 236 transitions. [2023-04-03 03:18:19,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 236 transitions. [2023-04-03 03:18:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-03 03:18:19,982 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:19,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:19,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-04-03 03:18:19,982 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:19,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash -743561384, now seen corresponding path program 1 times [2023-04-03 03:18:19,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:19,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32713242] [2023-04-03 03:18:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:20,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32713242] [2023-04-03 03:18:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32713242] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:20,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:20,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:18:20,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715627621] [2023-04-03 03:18:20,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:20,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:18:20,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:20,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:18:20,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:20,141 INFO L87 Difference]: Start difference. First operand 200 states and 236 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:20,813 INFO L93 Difference]: Finished difference Result 376 states and 470 transitions. [2023-04-03 03:18:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:18:20,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2023-04-03 03:18:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:20,814 INFO L225 Difference]: With dead ends: 376 [2023-04-03 03:18:20,814 INFO L226 Difference]: Without dead ends: 288 [2023-04-03 03:18:20,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:20,815 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 67 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:20,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 344 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:18:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-04-03 03:18:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 278. [2023-04-03 03:18:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 274 states have (on average 1.22992700729927) internal successors, (337), 274 states have internal predecessors, (337), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 340 transitions. [2023-04-03 03:18:21,373 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 340 transitions. Word has length 126 [2023-04-03 03:18:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:21,374 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 340 transitions. [2023-04-03 03:18:21,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:21,374 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 340 transitions. [2023-04-03 03:18:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-03 03:18:21,374 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:21,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:21,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-04-03 03:18:21,374 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:21,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:21,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2103219014, now seen corresponding path program 1 times [2023-04-03 03:18:21,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:21,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944934829] [2023-04-03 03:18:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:21,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:21,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:21,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944934829] [2023-04-03 03:18:21,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944934829] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:21,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:21,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:18:21,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106962073] [2023-04-03 03:18:21,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:21,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:18:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:18:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:21,505 INFO L87 Difference]: Start difference. First operand 278 states and 340 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:22,978 INFO L93 Difference]: Finished difference Result 610 states and 782 transitions. [2023-04-03 03:18:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:18:22,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2023-04-03 03:18:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:22,980 INFO L225 Difference]: With dead ends: 610 [2023-04-03 03:18:22,980 INFO L226 Difference]: Without dead ends: 444 [2023-04-03 03:18:22,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:22,986 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 60 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:22,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 344 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:18:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-04-03 03:18:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 426. [2023-04-03 03:18:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 422 states have (on average 1.2630331753554502) internal successors, (533), 422 states have internal predecessors, (533), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:24,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 536 transitions. [2023-04-03 03:18:24,032 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 536 transitions. Word has length 129 [2023-04-03 03:18:24,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:24,032 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 536 transitions. [2023-04-03 03:18:24,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 536 transitions. [2023-04-03 03:18:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-03 03:18:24,033 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:24,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:24,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-04-03 03:18:24,033 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:24,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1302675190, now seen corresponding path program 1 times [2023-04-03 03:18:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:24,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004469116] [2023-04-03 03:18:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:24,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:24,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004469116] [2023-04-03 03:18:24,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004469116] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:24,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:24,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:18:24,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893382325] [2023-04-03 03:18:24,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:24,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:18:24,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:18:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:24,150 INFO L87 Difference]: Start difference. First operand 426 states and 536 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:26,322 INFO L93 Difference]: Finished difference Result 1054 states and 1370 transitions. [2023-04-03 03:18:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:18:26,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132 [2023-04-03 03:18:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:26,323 INFO L225 Difference]: With dead ends: 1054 [2023-04-03 03:18:26,324 INFO L226 Difference]: Without dead ends: 740 [2023-04-03 03:18:26,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:26,324 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 53 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:26,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 344 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:18:26,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-04-03 03:18:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 706. [2023-04-03 03:18:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 702 states have (on average 1.2834757834757835) internal successors, (901), 702 states have internal predecessors, (901), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 904 transitions. [2023-04-03 03:18:28,307 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 904 transitions. Word has length 132 [2023-04-03 03:18:28,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:28,307 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 904 transitions. [2023-04-03 03:18:28,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:28,307 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 904 transitions. [2023-04-03 03:18:28,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-03 03:18:28,308 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:28,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:28,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-04-03 03:18:28,308 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:28,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:28,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1948317430, now seen corresponding path program 1 times [2023-04-03 03:18:28,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:28,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241788831] [2023-04-03 03:18:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:28,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:28,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:28,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241788831] [2023-04-03 03:18:28,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241788831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:28,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:28,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:18:28,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242025972] [2023-04-03 03:18:28,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:28,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:18:28,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:18:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:28,428 INFO L87 Difference]: Start difference. First operand 706 states and 904 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:32,332 INFO L93 Difference]: Finished difference Result 1894 states and 2474 transitions. [2023-04-03 03:18:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:18:32,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2023-04-03 03:18:32,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:32,334 INFO L225 Difference]: With dead ends: 1894 [2023-04-03 03:18:32,334 INFO L226 Difference]: Without dead ends: 1300 [2023-04-03 03:18:32,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:32,336 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 46 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:32,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 344 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:18:32,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2023-04-03 03:18:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1234. [2023-04-03 03:18:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1230 states have (on average 1.2918699186991869) internal successors, (1589), 1230 states have internal predecessors, (1589), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1592 transitions. [2023-04-03 03:18:36,140 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1592 transitions. Word has length 135 [2023-04-03 03:18:36,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:36,140 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1592 transitions. [2023-04-03 03:18:36,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:36,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1592 transitions. [2023-04-03 03:18:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:18:36,141 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:36,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:36,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-04-03 03:18:36,141 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:36,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:36,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1448166885, now seen corresponding path program 1 times [2023-04-03 03:18:36,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:36,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741090115] [2023-04-03 03:18:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:36,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:36,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:36,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741090115] [2023-04-03 03:18:36,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741090115] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:36,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:36,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:18:36,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522325680] [2023-04-03 03:18:36,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:36,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:18:36,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:36,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:18:36,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:36,274 INFO L87 Difference]: Start difference. First operand 1234 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:18:43,793 INFO L93 Difference]: Finished difference Result 3478 states and 4538 transitions. [2023-04-03 03:18:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:18:43,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:18:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:18:43,797 INFO L225 Difference]: With dead ends: 3478 [2023-04-03 03:18:43,797 INFO L226 Difference]: Without dead ends: 2356 [2023-04-03 03:18:43,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:18:43,799 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 36 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:18:43,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 344 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 03:18:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2023-04-03 03:18:51,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2226. [2023-04-03 03:18:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 2222 states have (on average 1.291179117911791) internal successors, (2869), 2222 states have internal predecessors, (2869), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 2872 transitions. [2023-04-03 03:18:51,024 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 2872 transitions. Word has length 138 [2023-04-03 03:18:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:18:51,024 INFO L495 AbstractCegarLoop]: Abstraction has 2226 states and 2872 transitions. [2023-04-03 03:18:51,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:18:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 2872 transitions. [2023-04-03 03:18:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-03 03:18:51,025 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:18:51,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:18:51,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-04-03 03:18:51,025 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-03 03:18:51,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:18:51,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1060652742, now seen corresponding path program 1 times [2023-04-03 03:18:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:18:51,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262652514] [2023-04-03 03:18:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:18:51,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:18:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:18:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:18:51,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:18:51,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262652514] [2023-04-03 03:18:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262652514] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:18:51,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:18:51,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 03:18:51,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577608650] [2023-04-03 03:18:51,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:18:51,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 03:18:51,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:18:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 03:18:51,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-03 03:18:51,174 INFO L87 Difference]: Start difference. First operand 2226 states and 2872 transitions. Second operand has 8 states, 8 states have (on average 17.25) internal successors, (138), 8 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:19:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:19:13,809 INFO L93 Difference]: Finished difference Result 8840 states and 11464 transitions. [2023-04-03 03:19:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:19:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 8 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2023-04-03 03:19:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:19:13,817 INFO L225 Difference]: With dead ends: 8840 [2023-04-03 03:19:13,817 INFO L226 Difference]: Without dead ends: 6726 [2023-04-03 03:19:13,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-04-03 03:19:13,820 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1139 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:19:13,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 2102 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:19:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states.