/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 EqDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:47:27,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:47:27,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:47:27,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 12:47:27,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:47:27,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:47:27,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:47:27,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:47:27,929 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:47:27,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:47:27,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:47:27,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:47:27,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:47:27,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:47:27,931 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:47:27,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:47:27,931 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:47:27,932 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:47:27,932 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:47:27,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:47:27,933 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:47:27,933 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:47:27,933 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:47:27,933 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:47:27,933 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:47:27,933 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:47:27,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:47:27,935 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:47:27,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:47:27,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:47:27,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:47:27,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:47:27,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:47:27,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:47:27,936 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:47:27,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:47:27,937 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:47:27,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:47:27,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:47:27,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:47:27,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:47:27,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:47:27,938 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:47:27,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:47:27,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:47:27,938 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:47:27,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:47:27,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:47:27,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:47:27,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:47:28,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:47:28,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:47:28,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:47:28,182 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:47:28,183 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:47:28,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:47:29,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:47:29,715 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:47:29,716 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:47:29,744 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebaea68b2/27655b7e41eb4b28af9cede57f873c92/FLAG94d434ff2 [2023-04-01 12:47:29,755 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebaea68b2/27655b7e41eb4b28af9cede57f873c92 [2023-04-01 12:47:29,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:47:29,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:47:29,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:47:29,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:47:29,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:47:29,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:47:29" (1/1) ... [2023-04-01 12:47:29,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dde31fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:29, skipping insertion in model container [2023-04-01 12:47:29,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:47:29" (1/1) ... [2023-04-01 12:47:29,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:47:29,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:47:30,284 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2023-04-01 12:47:30,333 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2023-04-01 12:47:30,360 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2023-04-01 12:47:30,366 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2023-04-01 12:47:30,379 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2023-04-01 12:47:30,385 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2023-04-01 12:47:30,394 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2023-04-01 12:47:30,416 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2023-04-01 12:47:30,421 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2023-04-01 12:47:30,427 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2023-04-01 12:47:30,438 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2023-04-01 12:47:30,458 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2023-04-01 12:47:30,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2023-04-01 12:47:30,477 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2023-04-01 12:47:30,485 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2023-04-01 12:47:30,502 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2023-04-01 12:47:30,523 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2023-04-01 12:47:30,528 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2023-04-01 12:47:30,532 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2023-04-01 12:47:30,539 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2023-04-01 12:47:30,550 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2023-04-01 12:47:30,575 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2023-04-01 12:47:30,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:47:30,895 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:47:30,979 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13531,13544] [2023-04-01 12:47:30,988 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18011,18024] [2023-04-01 12:47:30,992 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19303,19316] [2023-04-01 12:47:30,995 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20061,20074] [2023-04-01 12:47:31,000 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21681,21694] [2023-04-01 12:47:31,002 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22439,22452] [2023-04-01 12:47:31,006 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23525,23538] [2023-04-01 12:47:31,012 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26064,26077] [2023-04-01 12:47:31,015 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26825,26838] [2023-04-01 12:47:31,019 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27914,27927] [2023-04-01 12:47:31,025 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29919,29932] [2023-04-01 12:47:31,035 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[33842,33855] [2023-04-01 12:47:31,038 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34603,34616] [2023-04-01 12:47:31,042 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35696,35709] [2023-04-01 12:47:31,048 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37705,37718] [2023-04-01 12:47:31,058 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41308,41321] [2023-04-01 12:47:31,080 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48185,48198] [2023-04-01 12:47:31,082 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[48946,48959] [2023-04-01 12:47:31,089 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[50035,50048] [2023-04-01 12:47:31,095 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52040,52053] [2023-04-01 12:47:31,107 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55429,55442] [2023-04-01 12:47:31,120 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61126,61139] [2023-04-01 12:47:31,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:47:31,314 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:47:31,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31 WrapperNode [2023-04-01 12:47:31,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:47:31,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:47:31,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:47:31,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:47:31,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:47:31,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:47:31,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:47:31,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:47:31,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (1/1) ... [2023-04-01 12:47:31,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:47:31,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:47:31,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:47:31,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:47:31,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:47:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:47:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:47:31,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 12:47:31,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:47:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:47:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:47:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:47:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:47:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:47:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:47:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 12:47:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:47:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 12:47:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 12:47:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 12:47:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:47:31,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:47:31,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:47:31,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:47:31,994 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:47:31,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:47:34,497 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:47:34,664 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:47:34,665 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 12:47:34,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:47:34 BoogieIcfgContainer [2023-04-01 12:47:34,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:47:34,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:47:34,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:47:34,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:47:34,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:47:29" (1/3) ... [2023-04-01 12:47:34,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b135ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:47:34, skipping insertion in model container [2023-04-01 12:47:34,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:47:31" (2/3) ... [2023-04-01 12:47:34,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b135ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:47:34, skipping insertion in model container [2023-04-01 12:47:34,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:47:34" (3/3) ... [2023-04-01 12:47:34,680 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:47:34,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:47:34,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-04-01 12:47:34,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:47:34,776 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;@284979bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:47:34,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-04-01 12:47:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 1094 states, 1066 states have (on average 1.8639774859287055) internal successors, (1987), 1089 states have internal predecessors, (1987), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 12:47:34,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 12:47:34,813 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:34,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:34,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:34,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash 163065747, now seen corresponding path program 1 times [2023-04-01 12:47:34,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:34,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804004274] [2023-04-01 12:47:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:34,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:35,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804004274] [2023-04-01 12:47:35,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804004274] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:35,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:35,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:35,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709119210] [2023-04-01 12:47:35,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:35,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:35,575 INFO L87 Difference]: Start difference. First operand has 1094 states, 1066 states have (on average 1.8639774859287055) internal successors, (1987), 1089 states have internal predecessors, (1987), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:36,390 INFO L93 Difference]: Finished difference Result 1641 states and 2883 transitions. [2023-04-01 12:47:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:36,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2023-04-01 12:47:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:36,408 INFO L225 Difference]: With dead ends: 1641 [2023-04-01 12:47:36,408 INFO L226 Difference]: Without dead ends: 839 [2023-04-01 12:47:36,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:47:36,418 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 [2023-04-01 12:47:36,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4308 Valid, 1020 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 12:47:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-04-01 12:47:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2023-04-01 12:47:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 814 states have (on average 1.300982800982801) internal successors, (1059), 835 states have internal predecessors, (1059), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1062 transitions. [2023-04-01 12:47:36,500 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1062 transitions. Word has length 88 [2023-04-01 12:47:36,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:36,500 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1062 transitions. [2023-04-01 12:47:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:36,501 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1062 transitions. [2023-04-01 12:47:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-01 12:47:36,504 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:36,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:36,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:47:36,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:36,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1903552170, now seen corresponding path program 1 times [2023-04-01 12:47:36,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:36,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838473861] [2023-04-01 12:47:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:36,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:36,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:36,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838473861] [2023-04-01 12:47:36,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838473861] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:36,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:36,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182556018] [2023-04-01 12:47:36,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:36,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:36,738 INFO L87 Difference]: Start difference. First operand 839 states and 1062 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:37,198 INFO L93 Difference]: Finished difference Result 1373 states and 1788 transitions. [2023-04-01 12:47:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:37,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2023-04-01 12:47:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:37,202 INFO L225 Difference]: With dead ends: 1373 [2023-04-01 12:47:37,202 INFO L226 Difference]: Without dead ends: 717 [2023-04-01 12:47:37,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:47:37,205 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 [2023-04-01 12:47:37,206 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] [2023-04-01 12:47:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-04-01 12:47:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2023-04-01 12:47:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 692 states have (on average 1.329479768786127) internal successors, (920), 713 states have internal predecessors, (920), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 923 transitions. [2023-04-01 12:47:37,240 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 923 transitions. Word has length 89 [2023-04-01 12:47:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:37,241 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 923 transitions. [2023-04-01 12:47:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 923 transitions. [2023-04-01 12:47:37,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-01 12:47:37,244 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:37,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:37,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:47:37,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:37,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:37,245 INFO L85 PathProgramCache]: Analyzing trace with hash -841936591, now seen corresponding path program 1 times [2023-04-01 12:47:37,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:37,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644814292] [2023-04-01 12:47:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:37,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:37,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644814292] [2023-04-01 12:47:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644814292] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:37,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:37,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:37,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351189577] [2023-04-01 12:47:37,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:37,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:37,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:37,517 INFO L87 Difference]: Start difference. First operand 717 states and 923 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:37,976 INFO L93 Difference]: Finished difference Result 1251 states and 1648 transitions. [2023-04-01 12:47:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:37,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2023-04-01 12:47:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:37,980 INFO L225 Difference]: With dead ends: 1251 [2023-04-01 12:47:37,980 INFO L226 Difference]: Without dead ends: 659 [2023-04-01 12:47:37,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:47:37,984 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 [2023-04-01 12:47:37,984 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] [2023-04-01 12:47:37,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-04-01 12:47:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-04-01 12:47:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 634 states have (on average 1.3454258675078865) internal successors, (853), 655 states have internal predecessors, (853), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 856 transitions. [2023-04-01 12:47:38,019 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 856 transitions. Word has length 90 [2023-04-01 12:47:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:38,020 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 856 transitions. [2023-04-01 12:47:38,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 856 transitions. [2023-04-01 12:47:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-01 12:47:38,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:38,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:38,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:47:38,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:38,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1669770124, now seen corresponding path program 1 times [2023-04-01 12:47:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:38,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279849797] [2023-04-01 12:47:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:38,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:38,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:38,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279849797] [2023-04-01 12:47:38,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279849797] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:38,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:38,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:38,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883352872] [2023-04-01 12:47:38,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:38,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:38,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:38,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:38,219 INFO L87 Difference]: Start difference. First operand 659 states and 856 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:38,719 INFO L93 Difference]: Finished difference Result 1193 states and 1580 transitions. [2023-04-01 12:47:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2023-04-01 12:47:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:38,723 INFO L225 Difference]: With dead ends: 1193 [2023-04-01 12:47:38,723 INFO L226 Difference]: Without dead ends: 633 [2023-04-01 12:47:38,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:47:38,728 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2354 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:38,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 454 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:47:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-04-01 12:47:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2023-04-01 12:47:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 608 states have (on average 1.3519736842105263) internal successors, (822), 629 states have internal predecessors, (822), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 825 transitions. [2023-04-01 12:47:38,799 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 825 transitions. Word has length 91 [2023-04-01 12:47:38,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:38,800 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 825 transitions. [2023-04-01 12:47:38,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:38,800 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 825 transitions. [2023-04-01 12:47:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-01 12:47:38,806 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:38,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:38,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:47:38,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:38,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:38,808 INFO L85 PathProgramCache]: Analyzing trace with hash 391702095, now seen corresponding path program 1 times [2023-04-01 12:47:38,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:38,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925921483] [2023-04-01 12:47:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:38,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:39,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:39,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925921483] [2023-04-01 12:47:39,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925921483] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:39,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:39,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:39,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814415588] [2023-04-01 12:47:39,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:39,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:39,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:39,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:39,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:39,017 INFO L87 Difference]: Start difference. First operand 633 states and 825 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:39,526 INFO L93 Difference]: Finished difference Result 1167 states and 1548 transitions. [2023-04-01 12:47:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2023-04-01 12:47:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:39,530 INFO L225 Difference]: With dead ends: 1167 [2023-04-01 12:47:39,530 INFO L226 Difference]: Without dead ends: 623 [2023-04-01 12:47:39,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:47:39,532 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 2288 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:39,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 402 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:47:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-04-01 12:47:39,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2023-04-01 12:47:39,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 598 states have (on average 1.3528428093645486) internal successors, (809), 619 states have internal predecessors, (809), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 812 transitions. [2023-04-01 12:47:39,572 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 812 transitions. Word has length 92 [2023-04-01 12:47:39,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:39,573 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 812 transitions. [2023-04-01 12:47:39,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 812 transitions. [2023-04-01 12:47:39,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-01 12:47:39,575 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:39,575 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] [2023-04-01 12:47:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:47:39,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:39,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1339790450, now seen corresponding path program 1 times [2023-04-01 12:47:39,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:39,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216366793] [2023-04-01 12:47:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:39,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:39,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216366793] [2023-04-01 12:47:39,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216366793] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:39,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:47:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668515564] [2023-04-01 12:47:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:39,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:47:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:39,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:47:39,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:47:39,808 INFO L87 Difference]: Start difference. First operand 623 states and 812 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:40,187 INFO L93 Difference]: Finished difference Result 1157 states and 1534 transitions. [2023-04-01 12:47:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:47:40,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2023-04-01 12:47:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:40,190 INFO L225 Difference]: With dead ends: 1157 [2023-04-01 12:47:40,190 INFO L226 Difference]: Without dead ends: 603 [2023-04-01 12:47:40,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:47:40,194 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 2307 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:40,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 447 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:47:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-04-01 12:47:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2023-04-01 12:47:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3615916955017302) internal successors, (787), 599 states have internal predecessors, (787), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 790 transitions. [2023-04-01 12:47:40,234 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 790 transitions. Word has length 93 [2023-04-01 12:47:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:40,234 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 790 transitions. [2023-04-01 12:47:40,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 790 transitions. [2023-04-01 12:47:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 12:47:40,236 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:40,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:40,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:47:40,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:40,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:40,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1405351187, now seen corresponding path program 1 times [2023-04-01 12:47:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:40,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547156359] [2023-04-01 12:47:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:40,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:40,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:40,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547156359] [2023-04-01 12:47:40,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547156359] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:40,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:40,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 12:47:40,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445686726] [2023-04-01 12:47:40,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:40,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:47:40,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:47:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:47:40,818 INFO L87 Difference]: Start difference. First operand 603 states and 790 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:41,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:41,684 INFO L93 Difference]: Finished difference Result 1109 states and 1401 transitions. [2023-04-01 12:47:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:47:41,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-01 12:47:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:41,688 INFO L225 Difference]: With dead ends: 1109 [2023-04-01 12:47:41,688 INFO L226 Difference]: Without dead ends: 791 [2023-04-01 12:47:41,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-04-01 12:47:41,689 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 4412 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:41,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4412 Valid, 931 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:47:41,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-04-01 12:47:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 603. [2023-04-01 12:47:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3598615916955017) internal successors, (786), 599 states have internal predecessors, (786), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 789 transitions. [2023-04-01 12:47:41,743 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 789 transitions. Word has length 94 [2023-04-01 12:47:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:41,743 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 789 transitions. [2023-04-01 12:47:41,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 789 transitions. [2023-04-01 12:47:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 12:47:41,745 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:41,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:41,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:47:41,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:41,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash -159945519, now seen corresponding path program 1 times [2023-04-01 12:47:41,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:41,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349349929] [2023-04-01 12:47:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:41,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:42,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:42,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349349929] [2023-04-01 12:47:42,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349349929] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:42,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:42,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:42,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585596535] [2023-04-01 12:47:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:42,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:42,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:42,169 INFO L87 Difference]: Start difference. First operand 603 states and 789 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:43,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:43,471 INFO L93 Difference]: Finished difference Result 1080 states and 1409 transitions. [2023-04-01 12:47:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:43,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-01 12:47:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:43,475 INFO L225 Difference]: With dead ends: 1080 [2023-04-01 12:47:43,476 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 12:47:43,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:47:43,477 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, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:43,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 2004 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:47:43,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 12:47:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 12:47:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3581314878892734) internal successors, (785), 599 states have internal predecessors, (785), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 788 transitions. [2023-04-01 12:47:43,572 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 788 transitions. Word has length 94 [2023-04-01 12:47:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:43,572 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 788 transitions. [2023-04-01 12:47:43,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 788 transitions. [2023-04-01 12:47:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 12:47:43,574 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:43,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:43,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:47:43,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:43,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1184579395, now seen corresponding path program 1 times [2023-04-01 12:47:43,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:43,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007237180] [2023-04-01 12:47:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:43,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:44,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007237180] [2023-04-01 12:47:44,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007237180] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:44,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:44,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:47:44,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670009629] [2023-04-01 12:47:44,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:44,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:47:44,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:44,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:47:44,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:47:44,224 INFO L87 Difference]: Start difference. First operand 603 states and 788 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:45,838 INFO L93 Difference]: Finished difference Result 1122 states and 1463 transitions. [2023-04-01 12:47:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 12:47:45,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-01 12:47:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:45,843 INFO L225 Difference]: With dead ends: 1122 [2023-04-01 12:47:45,843 INFO L226 Difference]: Without dead ends: 1050 [2023-04-01 12:47:45,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-01 12:47:45,846 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 5255 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5255 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:45,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5255 Valid, 2552 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 12:47:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2023-04-01 12:47:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 610. [2023-04-01 12:47:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 585 states have (on average 1.358974358974359) internal successors, (795), 606 states have internal predecessors, (795), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 798 transitions. [2023-04-01 12:47:45,920 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 798 transitions. Word has length 94 [2023-04-01 12:47:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:45,921 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 798 transitions. [2023-04-01 12:47:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 798 transitions. [2023-04-01 12:47:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 12:47:45,923 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:45,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:45,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 12:47:45,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:45,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1535212465, now seen corresponding path program 1 times [2023-04-01 12:47:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:45,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345813079] [2023-04-01 12:47:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:46,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345813079] [2023-04-01 12:47:46,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345813079] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:46,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:46,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681577881] [2023-04-01 12:47:46,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:46,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:46,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:46,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:46,316 INFO L87 Difference]: Start difference. First operand 610 states and 798 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:47,719 INFO L93 Difference]: Finished difference Result 1181 states and 1550 transitions. [2023-04-01 12:47:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:47,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-01 12:47:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:47,723 INFO L225 Difference]: With dead ends: 1181 [2023-04-01 12:47:47,723 INFO L226 Difference]: Without dead ends: 1020 [2023-04-01 12:47:47,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:47:47,724 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 [2023-04-01 12:47:47,725 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] [2023-04-01 12:47:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2023-04-01 12:47:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 603. [2023-04-01 12:47:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.356401384083045) internal successors, (784), 599 states have internal predecessors, (784), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 787 transitions. [2023-04-01 12:47:47,803 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 787 transitions. Word has length 94 [2023-04-01 12:47:47,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:47,804 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 787 transitions. [2023-04-01 12:47:47,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 787 transitions. [2023-04-01 12:47:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:47:47,805 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:47,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:47,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 12:47:47,806 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:47,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:47,806 INFO L85 PathProgramCache]: Analyzing trace with hash -840723435, now seen corresponding path program 1 times [2023-04-01 12:47:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:47,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067549812] [2023-04-01 12:47:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:47,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:48,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067549812] [2023-04-01 12:47:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067549812] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:48,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:48,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:48,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335921120] [2023-04-01 12:47:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:48,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:48,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:48,291 INFO L87 Difference]: Start difference. First operand 603 states and 787 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:49,753 INFO L93 Difference]: Finished difference Result 1123 states and 1466 transitions. [2023-04-01 12:47:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-01 12:47:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:49,758 INFO L225 Difference]: With dead ends: 1123 [2023-04-01 12:47:49,758 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 12:47:49,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 12:47:49,759 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 4069 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4069 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:49,759 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] [2023-04-01 12:47:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 12:47:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-01 12:47:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3546712802768166) internal successors, (783), 599 states have internal predecessors, (783), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 786 transitions. [2023-04-01 12:47:49,849 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 786 transitions. Word has length 96 [2023-04-01 12:47:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:49,849 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 786 transitions. [2023-04-01 12:47:49,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:49,849 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 786 transitions. [2023-04-01 12:47:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:47:49,851 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:49,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:49,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 12:47:49,851 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:49,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1067075347, now seen corresponding path program 1 times [2023-04-01 12:47:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036115999] [2023-04-01 12:47:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:50,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:50,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036115999] [2023-04-01 12:47:50,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036115999] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:50,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:50,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:50,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726248481] [2023-04-01 12:47:50,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:50,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:50,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:50,256 INFO L87 Difference]: Start difference. First operand 603 states and 786 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:51,613 INFO L93 Difference]: Finished difference Result 1080 states and 1405 transitions. [2023-04-01 12:47:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:51,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-01 12:47:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:51,617 INFO L225 Difference]: With dead ends: 1080 [2023-04-01 12:47:51,617 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 12:47:51,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:47:51,619 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 2082 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:51,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 2199 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:47:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 12:47:51,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 12:47:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3529411764705883) internal successors, (782), 599 states have internal predecessors, (782), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 785 transitions. [2023-04-01 12:47:51,719 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 785 transitions. Word has length 96 [2023-04-01 12:47:51,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:51,719 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 785 transitions. [2023-04-01 12:47:51,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 785 transitions. [2023-04-01 12:47:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:47:51,721 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:51,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:51,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 12:47:51,721 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:51,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash -280583389, now seen corresponding path program 1 times [2023-04-01 12:47:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:51,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134019362] [2023-04-01 12:47:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:51,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:52,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:52,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134019362] [2023-04-01 12:47:52,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134019362] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:52,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:52,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 12:47:52,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203399375] [2023-04-01 12:47:52,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:52,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 12:47:52,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 12:47:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-04-01 12:47:52,362 INFO L87 Difference]: Start difference. First operand 603 states and 785 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:54,494 INFO L93 Difference]: Finished difference Result 1277 states and 1662 transitions. [2023-04-01 12:47:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 12:47:54,494 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 [2023-04-01 12:47:54,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:54,498 INFO L225 Difference]: With dead ends: 1277 [2023-04-01 12:47:54,499 INFO L226 Difference]: Without dead ends: 1082 [2023-04-01 12:47:54,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-04-01 12:47:54,500 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 3041 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:54,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3356 Invalid, 3014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 12:47:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-04-01 12:47:54,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 603. [2023-04-01 12:47:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3512110726643598) internal successors, (781), 599 states have internal predecessors, (781), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 784 transitions. [2023-04-01 12:47:54,626 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 784 transitions. Word has length 96 [2023-04-01 12:47:54,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:54,626 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 784 transitions. [2023-04-01 12:47:54,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 784 transitions. [2023-04-01 12:47:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:47:54,628 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:54,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:54,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 12:47:54,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:54,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:54,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1262393216, now seen corresponding path program 1 times [2023-04-01 12:47:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:54,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577635191] [2023-04-01 12:47:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:54,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:55,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577635191] [2023-04-01 12:47:55,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577635191] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:55,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:55,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999421622] [2023-04-01 12:47:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:55,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:55,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:55,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:55,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:55,031 INFO L87 Difference]: Start difference. First operand 603 states and 784 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:56,340 INFO L93 Difference]: Finished difference Result 1074 states and 1398 transitions. [2023-04-01 12:47:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:56,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-01 12:47:56,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:56,344 INFO L225 Difference]: With dead ends: 1074 [2023-04-01 12:47:56,344 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 12:47:56,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:47:56,345 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 [2023-04-01 12:47:56,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3110 Valid, 2178 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:47:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 12:47:56,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 12:47:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3494809688581315) internal successors, (780), 599 states have internal predecessors, (780), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 783 transitions. [2023-04-01 12:47:56,444 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 783 transitions. Word has length 96 [2023-04-01 12:47:56,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:56,445 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 783 transitions. [2023-04-01 12:47:56,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 783 transitions. [2023-04-01 12:47:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:47:56,446 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:56,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:56,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 12:47:56,447 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:56,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash -552206747, now seen corresponding path program 1 times [2023-04-01 12:47:56,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:56,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785937123] [2023-04-01 12:47:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:56,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:56,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:56,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785937123] [2023-04-01 12:47:56,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785937123] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:56,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:56,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:56,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028852340] [2023-04-01 12:47:56,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:56,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:56,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:56,876 INFO L87 Difference]: Start difference. First operand 603 states and 783 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:58,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:58,236 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2023-04-01 12:47:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:58,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-01 12:47:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:58,242 INFO L225 Difference]: With dead ends: 1108 [2023-04-01 12:47:58,242 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 12:47:58,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 12:47:58,245 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 3445 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:47:58,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3445 Valid, 2832 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2359 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:47:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 12:47:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-01 12:47:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3477508650519032) internal successors, (779), 599 states have internal predecessors, (779), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 782 transitions. [2023-04-01 12:47:58,349 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 782 transitions. Word has length 96 [2023-04-01 12:47:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:47:58,349 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 782 transitions. [2023-04-01 12:47:58,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:58,349 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 782 transitions. [2023-04-01 12:47:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:47:58,351 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:47:58,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:47:58,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 12:47:58,353 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:47:58,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:47:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1054149209, now seen corresponding path program 1 times [2023-04-01 12:47:58,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:47:58,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646391661] [2023-04-01 12:47:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:47:58,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:47:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:47:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:47:58,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:47:58,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646391661] [2023-04-01 12:47:58,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646391661] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:47:58,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:47:58,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:47:58,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747611072] [2023-04-01 12:47:58,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:47:58,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:47:58,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:47:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:47:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:47:58,728 INFO L87 Difference]: Start difference. First operand 603 states and 782 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:47:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:47:59,921 INFO L93 Difference]: Finished difference Result 1080 states and 1402 transitions. [2023-04-01 12:47:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:47:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-01 12:47:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:47:59,925 INFO L225 Difference]: With dead ends: 1080 [2023-04-01 12:47:59,925 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 12:47:59,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:47:59,927 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 [2023-04-01 12:47:59,927 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] [2023-04-01 12:47:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 12:48:00,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 12:48:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3460207612456747) internal successors, (778), 599 states have internal predecessors, (778), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 781 transitions. [2023-04-01 12:48:00,051 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 781 transitions. Word has length 96 [2023-04-01 12:48:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:00,052 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 781 transitions. [2023-04-01 12:48:00,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 781 transitions. [2023-04-01 12:48:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:48:00,053 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:00,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:00,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 12:48:00,054 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:00,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash -703516139, now seen corresponding path program 1 times [2023-04-01 12:48:00,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:00,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286165072] [2023-04-01 12:48:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:00,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:00,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286165072] [2023-04-01 12:48:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286165072] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:00,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:00,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:00,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412883017] [2023-04-01 12:48:00,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:00,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:00,405 INFO L87 Difference]: Start difference. First operand 603 states and 781 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:01,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:01,518 INFO L93 Difference]: Finished difference Result 1089 states and 1409 transitions. [2023-04-01 12:48:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:01,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-01 12:48:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:01,521 INFO L225 Difference]: With dead ends: 1089 [2023-04-01 12:48:01,521 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 12:48:01,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:48:01,522 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 [2023-04-01 12:48:01,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3222 Valid, 2234 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:48:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 12:48:01,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 12:48:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3442906574394464) internal successors, (777), 599 states have internal predecessors, (777), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 780 transitions. [2023-04-01 12:48:01,628 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 780 transitions. Word has length 96 [2023-04-01 12:48:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:01,629 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 780 transitions. [2023-04-01 12:48:01,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 780 transitions. [2023-04-01 12:48:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 12:48:01,630 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:01,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:01,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 12:48:01,631 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr19ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:01,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash -574065394, now seen corresponding path program 1 times [2023-04-01 12:48:01,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:01,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130401407] [2023-04-01 12:48:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:01,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:01,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130401407] [2023-04-01 12:48:01,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130401407] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:01,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:01,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592731159] [2023-04-01 12:48:01,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:01,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:01,998 INFO L87 Difference]: Start difference. First operand 603 states and 780 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:03,321 INFO L93 Difference]: Finished difference Result 1123 states and 1459 transitions. [2023-04-01 12:48:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-01 12:48:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:03,325 INFO L225 Difference]: With dead ends: 1123 [2023-04-01 12:48:03,325 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 12:48:03,325 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 [2023-04-01 12:48:03,326 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 2625 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2625 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:03,326 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] [2023-04-01 12:48:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 12:48:03,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-01 12:48:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.342560553633218) internal successors, (776), 599 states have internal predecessors, (776), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 779 transitions. [2023-04-01 12:48:03,437 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 779 transitions. Word has length 96 [2023-04-01 12:48:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:03,437 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 779 transitions. [2023-04-01 12:48:03,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 779 transitions. [2023-04-01 12:48:03,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:48:03,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:03,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:03,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 12:48:03,439 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:03,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash -176150049, now seen corresponding path program 1 times [2023-04-01 12:48:03,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:03,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103550354] [2023-04-01 12:48:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:03,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:03,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103550354] [2023-04-01 12:48:03,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103550354] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:03,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:03,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208122548] [2023-04-01 12:48:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:03,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:03,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:03,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:03,891 INFO L87 Difference]: Start difference. First operand 603 states and 779 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:05,083 INFO L93 Difference]: Finished difference Result 1051 states and 1353 transitions. [2023-04-01 12:48:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-01 12:48:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:05,086 INFO L225 Difference]: With dead ends: 1051 [2023-04-01 12:48:05,086 INFO L226 Difference]: Without dead ends: 992 [2023-04-01 12:48:05,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 12:48:05,087 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 3861 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3861 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:05,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3861 Valid, 2328 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:48:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-01 12:48:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-01 12:48:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3408304498269896) internal successors, (775), 599 states have internal predecessors, (775), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 778 transitions. [2023-04-01 12:48:05,199 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 778 transitions. Word has length 98 [2023-04-01 12:48:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:05,200 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 778 transitions. [2023-04-01 12:48:05,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 778 transitions. [2023-04-01 12:48:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:48:05,201 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:05,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:05,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 12:48:05,202 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:05,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:05,202 INFO L85 PathProgramCache]: Analyzing trace with hash -305600794, now seen corresponding path program 1 times [2023-04-01 12:48:05,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:05,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601359813] [2023-04-01 12:48:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:05,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:05,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:05,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601359813] [2023-04-01 12:48:05,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601359813] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:05,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:05,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:05,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336425046] [2023-04-01 12:48:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:05,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:05,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:05,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:05,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:05,557 INFO L87 Difference]: Start difference. First operand 603 states and 778 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:06,748 INFO L93 Difference]: Finished difference Result 1089 states and 1405 transitions. [2023-04-01 12:48:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:06,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-01 12:48:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:06,752 INFO L225 Difference]: With dead ends: 1089 [2023-04-01 12:48:06,752 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 12:48:06,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:48:06,753 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2818 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2818 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:06,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2818 Valid, 2521 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:48:06,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 12:48:06,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 12:48:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3391003460207613) internal successors, (774), 599 states have internal predecessors, (774), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 777 transitions. [2023-04-01 12:48:06,860 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 777 transitions. Word has length 98 [2023-04-01 12:48:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:06,861 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 777 transitions. [2023-04-01 12:48:06,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 777 transitions. [2023-04-01 12:48:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:48:06,863 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:06,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:06,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 12:48:06,863 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:06,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:06,864 INFO L85 PathProgramCache]: Analyzing trace with hash -904132493, now seen corresponding path program 1 times [2023-04-01 12:48:06,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:06,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392788977] [2023-04-01 12:48:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:06,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:07,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:07,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392788977] [2023-04-01 12:48:07,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392788977] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:07,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:07,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:07,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957436845] [2023-04-01 12:48:07,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:07,228 INFO L87 Difference]: Start difference. First operand 603 states and 777 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:08,450 INFO L93 Difference]: Finished difference Result 1095 states and 1409 transitions. [2023-04-01 12:48:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:08,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-01 12:48:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:08,454 INFO L225 Difference]: With dead ends: 1095 [2023-04-01 12:48:08,454 INFO L226 Difference]: Without dead ends: 1008 [2023-04-01 12:48:08,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:48:08,455 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 3479 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:08,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 2444 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:48:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-01 12:48:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 603. [2023-04-01 12:48:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3373702422145328) internal successors, (773), 599 states have internal predecessors, (773), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 776 transitions. [2023-04-01 12:48:08,577 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 776 transitions. Word has length 98 [2023-04-01 12:48:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:08,577 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 776 transitions. [2023-04-01 12:48:08,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 776 transitions. [2023-04-01 12:48:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:48:08,579 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:08,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 12:48:08,579 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:08,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1311046285, now seen corresponding path program 1 times [2023-04-01 12:48:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:08,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909809063] [2023-04-01 12:48:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:08,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909809063] [2023-04-01 12:48:08,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909809063] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:08,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:08,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:08,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959733080] [2023-04-01 12:48:08,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:08,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:08,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:08,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:08,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:08,960 INFO L87 Difference]: Start difference. First operand 603 states and 776 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:10,193 INFO L93 Difference]: Finished difference Result 1138 states and 1464 transitions. [2023-04-01 12:48:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:10,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-01 12:48:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:10,198 INFO L225 Difference]: With dead ends: 1138 [2023-04-01 12:48:10,198 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 12:48:10,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:48:10,201 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 [2023-04-01 12:48:10,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2650 Valid, 2716 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:48:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 12:48:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 603. [2023-04-01 12:48:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3356401384083045) internal successors, (772), 599 states have internal predecessors, (772), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 775 transitions. [2023-04-01 12:48:10,300 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 775 transitions. Word has length 98 [2023-04-01 12:48:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:10,301 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 775 transitions. [2023-04-01 12:48:10,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 775 transitions. [2023-04-01 12:48:10,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:48:10,302 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:10,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:10,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-01 12:48:10,303 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:10,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:10,303 INFO L85 PathProgramCache]: Analyzing trace with hash -134066458, now seen corresponding path program 1 times [2023-04-01 12:48:10,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:10,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221115809] [2023-04-01 12:48:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:10,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:10,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221115809] [2023-04-01 12:48:10,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221115809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:10,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:10,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:10,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611926797] [2023-04-01 12:48:10,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:10,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:10,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:10,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:10,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:10,687 INFO L87 Difference]: Start difference. First operand 603 states and 775 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:12,002 INFO L93 Difference]: Finished difference Result 1047 states and 1345 transitions. [2023-04-01 12:48:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:12,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-01 12:48:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:12,005 INFO L225 Difference]: With dead ends: 1047 [2023-04-01 12:48:12,005 INFO L226 Difference]: Without dead ends: 992 [2023-04-01 12:48:12,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 12:48:12,006 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 3568 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3568 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:12,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3568 Valid, 2561 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:48:12,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-01 12:48:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-01 12:48:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.333910034602076) internal successors, (771), 599 states have internal predecessors, (771), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 774 transitions. [2023-04-01 12:48:12,131 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 774 transitions. Word has length 98 [2023-04-01 12:48:12,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:12,132 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 774 transitions. [2023-04-01 12:48:12,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:12,132 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 774 transitions. [2023-04-01 12:48:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:48:12,133 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:12,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:12,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-01 12:48:12,134 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:12,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1793785511, now seen corresponding path program 1 times [2023-04-01 12:48:12,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:12,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856233414] [2023-04-01 12:48:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:12,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856233414] [2023-04-01 12:48:12,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856233414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:12,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:12,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871153706] [2023-04-01 12:48:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:12,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:12,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:12,515 INFO L87 Difference]: Start difference. First operand 603 states and 774 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:13,791 INFO L93 Difference]: Finished difference Result 1051 states and 1347 transitions. [2023-04-01 12:48:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:13,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-01 12:48:13,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:13,794 INFO L225 Difference]: With dead ends: 1051 [2023-04-01 12:48:13,794 INFO L226 Difference]: Without dead ends: 992 [2023-04-01 12:48:13,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:48:13,795 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 1826 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:13,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 2601 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:48:13,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-01 12:48:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 603. [2023-04-01 12:48:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 578 states have (on average 1.3321799307958477) internal successors, (770), 599 states have internal predecessors, (770), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 773 transitions. [2023-04-01 12:48:13,897 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 773 transitions. Word has length 98 [2023-04-01 12:48:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:13,897 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 773 transitions. [2023-04-01 12:48:13,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 773 transitions. [2023-04-01 12:48:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-01 12:48:13,899 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:13,899 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] [2023-04-01 12:48:13,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-01 12:48:13,899 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2023-04-01 12:48:13,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash -992184103, now seen corresponding path program 1 times [2023-04-01 12:48:13,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:13,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176193025] [2023-04-01 12:48:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:14,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:14,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176193025] [2023-04-01 12:48:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176193025] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:14,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:14,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128303870] [2023-04-01 12:48:14,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:14,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:14,284 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)