/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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:48:03,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:48:03,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:48:03,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 12:48:03,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:48:03,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:48:03,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:48:03,981 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 12:48:04,007 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:48:04,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:48:04,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:48:04,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:48:04,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:48:04,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:48:04,008 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:48:04,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:48:04,008 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:48:04,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:48:04,013 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:48:04,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:48:04,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:48:04,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:48:04,014 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:48:04,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:48:04,014 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:48:04,014 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:48:04,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:48:04,015 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:48:04,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:48:04,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:48:04,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:48:04,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:48:04,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:48:04,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:48:04,017 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:48:04,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:48:04,017 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:48:04,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:48:04,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:48:04,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:48:04,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:48:04,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:48:04,017 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:48:04,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:48:04,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:48:04,018 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:48:04,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:48:04,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:48:04,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:48:04,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:48:04,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:48:04,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:48:04,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:48:04,234 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:48:04,235 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:48:04,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:48:05,221 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:48:05,607 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:48:05,608 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:48:05,635 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e2508fd/a5bb09c0f0ad44ae851e69a17574601d/FLAGc35a17079 [2023-04-01 12:48:05,649 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e2508fd/a5bb09c0f0ad44ae851e69a17574601d [2023-04-01 12:48:05,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:48:05,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:48:05,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:48:05,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:48:05,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:48:05,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:48:05" (1/1) ... [2023-04-01 12:48:05,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4a8017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:05, skipping insertion in model container [2023-04-01 12:48:05,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:48:05" (1/1) ... [2023-04-01 12:48:05,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:48:05,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:48:06,193 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2023-04-01 12:48:06,226 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2023-04-01 12:48:06,234 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2023-04-01 12:48:06,239 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2023-04-01 12:48:06,247 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2023-04-01 12:48:06,251 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2023-04-01 12:48:06,258 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2023-04-01 12:48:06,272 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2023-04-01 12:48:06,277 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2023-04-01 12:48:06,287 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2023-04-01 12:48:06,297 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2023-04-01 12:48:06,317 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2023-04-01 12:48:06,321 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2023-04-01 12:48:06,327 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2023-04-01 12:48:06,335 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2023-04-01 12:48:06,346 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2023-04-01 12:48:06,368 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2023-04-01 12:48:06,372 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2023-04-01 12:48:06,376 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2023-04-01 12:48:06,383 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2023-04-01 12:48:06,405 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2023-04-01 12:48:06,427 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2023-04-01 12:48:06,466 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2023-04-01 12:48:06,472 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2023-04-01 12:48:06,478 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2023-04-01 12:48:06,499 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2023-04-01 12:48:06,517 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2023-04-01 12:48:06,534 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2023-04-01 12:48:06,568 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2023-04-01 12:48:07,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:48:07,019 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:48:07,076 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2023-04-01 12:48:07,086 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2023-04-01 12:48:07,091 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2023-04-01 12:48:07,095 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2023-04-01 12:48:07,101 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2023-04-01 12:48:07,104 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2023-04-01 12:48:07,108 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2023-04-01 12:48:07,116 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2023-04-01 12:48:07,119 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2023-04-01 12:48:07,178 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2023-04-01 12:48:07,183 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2023-04-01 12:48:07,195 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2023-04-01 12:48:07,198 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2023-04-01 12:48:07,201 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2023-04-01 12:48:07,206 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2023-04-01 12:48:07,214 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2023-04-01 12:48:07,230 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2023-04-01 12:48:07,233 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2023-04-01 12:48:07,236 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2023-04-01 12:48:07,241 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2023-04-01 12:48:07,250 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2023-04-01 12:48:07,263 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2023-04-01 12:48:07,286 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2023-04-01 12:48:07,289 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2023-04-01 12:48:07,292 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2023-04-01 12:48:07,297 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2023-04-01 12:48:07,304 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2023-04-01 12:48:07,316 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2023-04-01 12:48:07,334 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.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2023-04-01 12:48:07,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:48:07,659 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:48:07,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07 WrapperNode [2023-04-01 12:48:07,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:48:07,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:48:07,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:48:07,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:48:07,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,861 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:48:07,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:48:07,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:48:07,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:48:07,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (1/1) ... [2023-04-01 12:48:07,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:48:07,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:48:07,958 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 12:48:07,976 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 12:48:07,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:48:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:48:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:48:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 12:48:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:48:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:48:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:48:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:48:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:48:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 12:48:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-01 12:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:48:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:48:08,323 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:48:08,324 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:48:11,616 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:48:11,956 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:48:11,956 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 12:48:11,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:48:11 BoogieIcfgContainer [2023-04-01 12:48:11,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:48:11,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:48:11,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:48:11,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:48:11,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:48:05" (1/3) ... [2023-04-01 12:48:11,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43169d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:48:11, skipping insertion in model container [2023-04-01 12:48:11,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:48:07" (2/3) ... [2023-04-01 12:48:11,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43169d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:48:11, skipping insertion in model container [2023-04-01 12:48:11,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:48:11" (3/3) ... [2023-04-01 12:48:11,966 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 12:48:11,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:48:11,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-04-01 12:48:12,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:48:12,043 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;@18ff4446, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:48:12,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-04-01 12:48:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 1994 states, 1959 states have (on average 1.8723838693210821) internal successors, (3668), 1989 states have internal predecessors, (3668), 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 12:48:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-01 12:48:12,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:12,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:48:12,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:12,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash -927992440, now seen corresponding path program 1 times [2023-04-01 12:48:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:12,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555305334] [2023-04-01 12:48:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:12,764 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 12:48:12,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:12,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555305334] [2023-04-01 12:48:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555305334] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:12,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:12,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:48:12,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927703995] [2023-04-01 12:48:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:12,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:48:12,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:48:12,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:48:12,806 INFO L87 Difference]: Start difference. First operand has 1994 states, 1959 states have (on average 1.8723838693210821) internal successors, (3668), 1989 states have internal predecessors, (3668), 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 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:14,112 INFO L93 Difference]: Finished difference Result 2919 states and 5201 transitions. [2023-04-01 12:48:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:48:14,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-01 12:48:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:14,127 INFO L225 Difference]: With dead ends: 2919 [2023-04-01 12:48:14,127 INFO L226 Difference]: Without dead ends: 1573 [2023-04-01 12:48:14,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:48:14,135 INFO L413 NwaCegarLoop]: 1722 mSDtfsCounter, 8132 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8132 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:14,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8132 Valid, 1819 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 12:48:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-04-01 12:48:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1573. [2023-04-01 12:48:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1541 states have (on average 1.2900713822193381) internal successors, (1988), 1569 states have internal predecessors, (1988), 2 states have call successors, (2), 2 states 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 12:48:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1991 transitions. [2023-04-01 12:48:14,231 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1991 transitions. Word has length 103 [2023-04-01 12:48:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:14,232 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 1991 transitions. [2023-04-01 12:48:14,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1991 transitions. [2023-04-01 12:48:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-01 12:48:14,237 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:14,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:14,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:48:14,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:14,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 634563140, now seen corresponding path program 1 times [2023-04-01 12:48:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:14,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981745224] [2023-04-01 12:48:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:14,528 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 12:48:14,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981745224] [2023-04-01 12:48:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981745224] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:14,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:14,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:48:14,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440079419] [2023-04-01 12:48:14,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:14,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:48:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:48:14,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:48:14,531 INFO L87 Difference]: Start difference. First operand 1573 states and 1991 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states 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 12:48:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:15,189 INFO L93 Difference]: Finished difference Result 2485 states and 3258 transitions. [2023-04-01 12:48:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:48:15,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 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 104 [2023-04-01 12:48:15,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:15,195 INFO L225 Difference]: With dead ends: 2485 [2023-04-01 12:48:15,195 INFO L226 Difference]: Without dead ends: 1275 [2023-04-01 12:48:15,197 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 12:48:15,198 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 4896 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4896 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:15,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4896 Valid, 934 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 12:48:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-04-01 12:48:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1275. [2023-04-01 12:48:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1243 states have (on average 1.333065164923572) internal successors, (1657), 1271 states have internal predecessors, (1657), 2 states have call successors, (2), 2 states 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 12:48:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1660 transitions. [2023-04-01 12:48:15,266 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1660 transitions. Word has length 104 [2023-04-01 12:48:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:15,274 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1660 transitions. [2023-04-01 12:48:15,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (2), 2 states 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 12:48:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1660 transitions. [2023-04-01 12:48:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-01 12:48:15,277 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:15,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:15,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:48:15,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:15,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash -56010226, now seen corresponding path program 1 times [2023-04-01 12:48:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:15,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077197044] [2023-04-01 12:48:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:15,477 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 12:48:15,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:15,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077197044] [2023-04-01 12:48:15,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077197044] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:15,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:15,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:48:15,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32115972] [2023-04-01 12:48:15,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:15,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:48:15,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:48:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:48:15,480 INFO L87 Difference]: Start difference. First operand 1275 states and 1660 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (2), 2 states 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 12:48:16,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:16,077 INFO L93 Difference]: Finished difference Result 2187 states and 2926 transitions. [2023-04-01 12:48:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:48:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (2), 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 105 [2023-04-01 12:48:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:16,091 INFO L225 Difference]: With dead ends: 2187 [2023-04-01 12:48:16,091 INFO L226 Difference]: Without dead ends: 1129 [2023-04-01 12:48:16,093 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 12:48:16,093 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 4394 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4394 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:16,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4394 Valid, 834 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:48:16,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2023-04-01 12:48:16,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1129. [2023-04-01 12:48:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1097 states have (on average 1.3618960802187785) internal successors, (1494), 1125 states have internal predecessors, (1494), 2 states have call successors, (2), 2 states 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 12:48:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1497 transitions. [2023-04-01 12:48:16,129 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1497 transitions. Word has length 105 [2023-04-01 12:48:16,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:16,130 INFO L495 AbstractCegarLoop]: Abstraction has 1129 states and 1497 transitions. [2023-04-01 12:48:16,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (2), 2 states 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 12:48:16,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1497 transitions. [2023-04-01 12:48:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-01 12:48:16,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:16,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:16,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:48:16,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:16,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash -470248346, now seen corresponding path program 1 times [2023-04-01 12:48:16,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:16,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873762763] [2023-04-01 12:48:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:16,376 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 12:48:16,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873762763] [2023-04-01 12:48:16,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873762763] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:16,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:16,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:48:16,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698819012] [2023-04-01 12:48:16,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:16,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:48:16,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:16,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:48:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:48:16,379 INFO L87 Difference]: Start difference. First operand 1129 states and 1497 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (2), 2 states 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 12:48:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:17,205 INFO L93 Difference]: Finished difference Result 2041 states and 2762 transitions. [2023-04-01 12:48:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:48:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (2), 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 106 [2023-04-01 12:48:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:17,209 INFO L225 Difference]: With dead ends: 2041 [2023-04-01 12:48:17,210 INFO L226 Difference]: Without dead ends: 1089 [2023-04-01 12:48:17,211 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 12:48:17,212 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 4146 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:17,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 662 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:48:17,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-04-01 12:48:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2023-04-01 12:48:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1057 states have (on average 1.3670766319772942) internal successors, (1445), 1085 states have internal predecessors, (1445), 2 states have call successors, (2), 2 states 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 12:48:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1448 transitions. [2023-04-01 12:48:17,253 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1448 transitions. Word has length 106 [2023-04-01 12:48:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:17,253 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1448 transitions. [2023-04-01 12:48:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (2), 2 states 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 12:48:17,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1448 transitions. [2023-04-01 12:48:17,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-01 12:48:17,256 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:17,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:17,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:48:17,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:17,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:17,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1143943596, now seen corresponding path program 1 times [2023-04-01 12:48:17,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:17,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931904966] [2023-04-01 12:48:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:17,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:17,463 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 12:48:17,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931904966] [2023-04-01 12:48:17,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931904966] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:17,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:17,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:48:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707294152] [2023-04-01 12:48:17,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:17,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:48:17,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:17,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:48:17,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:48:17,465 INFO L87 Difference]: Start difference. First operand 1089 states and 1448 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:18,061 INFO L93 Difference]: Finished difference Result 2001 states and 2712 transitions. [2023-04-01 12:48:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:48:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2023-04-01 12:48:18,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:18,064 INFO L225 Difference]: With dead ends: 2001 [2023-04-01 12:48:18,064 INFO L226 Difference]: Without dead ends: 1039 [2023-04-01 12:48:18,067 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 12:48:18,068 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 4067 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:18,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4067 Valid, 760 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:48:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-04-01 12:48:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2023-04-01 12:48:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1007 states have (on average 1.3803376365441906) internal successors, (1390), 1035 states have internal predecessors, (1390), 2 states have call successors, (2), 2 states 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 12:48:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1393 transitions. [2023-04-01 12:48:18,133 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1393 transitions. Word has length 107 [2023-04-01 12:48:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:18,134 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1393 transitions. [2023-04-01 12:48:18,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1393 transitions. [2023-04-01 12:48:18,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-01 12:48:18,137 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:18,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:18,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:48:18,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:18,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash -824584372, now seen corresponding path program 1 times [2023-04-01 12:48:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:18,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159403437] [2023-04-01 12:48:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:18,328 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 12:48:18,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:18,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159403437] [2023-04-01 12:48:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159403437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:18,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:18,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:48:18,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315424094] [2023-04-01 12:48:18,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:18,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:48:18,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:48:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:48:18,331 INFO L87 Difference]: Start difference. First operand 1039 states and 1393 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:18,930 INFO L93 Difference]: Finished difference Result 1951 states and 2656 transitions. [2023-04-01 12:48:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:48:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2023-04-01 12:48:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:18,933 INFO L225 Difference]: With dead ends: 1951 [2023-04-01 12:48:18,933 INFO L226 Difference]: Without dead ends: 1017 [2023-04-01 12:48:18,936 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 12:48:18,937 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 3973 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3973 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:18,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3973 Valid, 730 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:48:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2023-04-01 12:48:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1017. [2023-04-01 12:48:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 985 states have (on average 1.385786802030457) internal successors, (1365), 1013 states have internal predecessors, (1365), 2 states have call successors, (2), 2 states 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 12:48:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1368 transitions. [2023-04-01 12:48:18,981 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1368 transitions. Word has length 108 [2023-04-01 12:48:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:18,981 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1368 transitions. [2023-04-01 12:48:18,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 12:48:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1368 transitions. [2023-04-01 12:48:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-01 12:48:18,983 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:18,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:18,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:48:18,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:18,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1273501102, now seen corresponding path program 1 times [2023-04-01 12:48:18,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:18,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196002838] [2023-04-01 12:48:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:18,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:19,192 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 12:48:19,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196002838] [2023-04-01 12:48:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196002838] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:48:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746228217] [2023-04-01 12:48:19,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:19,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:48:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:48:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:48:19,194 INFO L87 Difference]: Start difference. First operand 1017 states and 1368 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (2), 2 states 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 12:48:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:20,060 INFO L93 Difference]: Finished difference Result 2469 states and 3360 transitions. [2023-04-01 12:48:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:48:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (2), 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 109 [2023-04-01 12:48:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:20,064 INFO L225 Difference]: With dead ends: 2469 [2023-04-01 12:48:20,065 INFO L226 Difference]: Without dead ends: 1534 [2023-04-01 12:48:20,066 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 12:48:20,067 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 5335 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5335 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:20,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5335 Valid, 1144 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:48:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-04-01 12:48:20,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1432. [2023-04-01 12:48:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4192857142857143) internal successors, (1987), 1428 states have internal predecessors, (1987), 2 states have call successors, (2), 2 states 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 12:48:20,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1990 transitions. [2023-04-01 12:48:20,143 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1990 transitions. Word has length 109 [2023-04-01 12:48:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:20,143 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1990 transitions. [2023-04-01 12:48:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (2), 2 states 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 12:48:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1990 transitions. [2023-04-01 12:48:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 12:48:20,146 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:20,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:20,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:48:20,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr21ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:20,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:20,146 INFO L85 PathProgramCache]: Analyzing trace with hash -813251844, now seen corresponding path program 1 times [2023-04-01 12:48:20,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:20,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249080479] [2023-04-01 12:48:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:20,772 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 12:48:20,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:20,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249080479] [2023-04-01 12:48:20,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249080479] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:20,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:20,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 12:48:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205700102] [2023-04-01 12:48:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:20,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 12:48:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 12:48:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 12:48:20,773 INFO L87 Difference]: Start difference. First operand 1432 states and 1990 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:22,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:22,823 INFO L93 Difference]: Finished difference Result 2533 states and 3490 transitions. [2023-04-01 12:48:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 12:48:22,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (2), 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 110 [2023-04-01 12:48:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:22,830 INFO L225 Difference]: With dead ends: 2533 [2023-04-01 12:48:22,830 INFO L226 Difference]: Without dead ends: 2385 [2023-04-01 12:48:22,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-01 12:48:22,833 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 5731 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 4159 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5731 SdHoareTripleChecker+Valid, 4485 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:22,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5731 Valid, 4485 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4159 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 12:48:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2023-04-01 12:48:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1432. [2023-04-01 12:48:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.417857142857143) internal successors, (1985), 1428 states have internal predecessors, (1985), 2 states have call successors, (2), 2 states 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 12:48:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1988 transitions. [2023-04-01 12:48:22,936 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1988 transitions. Word has length 110 [2023-04-01 12:48:22,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:22,936 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1988 transitions. [2023-04-01 12:48:22,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1988 transitions. [2023-04-01 12:48:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 12:48:22,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:22,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:48:22,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:48:22,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr20ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:22,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash -721713355, now seen corresponding path program 1 times [2023-04-01 12:48:22,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:22,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792812209] [2023-04-01 12:48:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:22,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:23,454 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 12:48:23,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:23,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792812209] [2023-04-01 12:48:23,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792812209] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:23,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:23,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 12:48:23,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22273377] [2023-04-01 12:48:23,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:23,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 12:48:23,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 12:48:23,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 12:48:23,456 INFO L87 Difference]: Start difference. First operand 1432 states and 1988 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:25,371 INFO L93 Difference]: Finished difference Result 2459 states and 3366 transitions. [2023-04-01 12:48:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 12:48:25,371 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (2), 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 110 [2023-04-01 12:48:25,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:25,377 INFO L225 Difference]: With dead ends: 2459 [2023-04-01 12:48:25,377 INFO L226 Difference]: Without dead ends: 2337 [2023-04-01 12:48:25,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-04-01 12:48:25,380 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 4043 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4043 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:25,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4043 Valid, 3789 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 12:48:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2023-04-01 12:48:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1432. [2023-04-01 12:48:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4164285714285714) internal successors, (1983), 1428 states have internal predecessors, (1983), 2 states have call successors, (2), 2 states 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 12:48:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1986 transitions. [2023-04-01 12:48:25,495 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1986 transitions. Word has length 110 [2023-04-01 12:48:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:25,495 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1986 transitions. [2023-04-01 12:48:25,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:25,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1986 transitions. [2023-04-01 12:48:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 12:48:25,502 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:25,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:25,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 12:48:25,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:25,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash -69611967, now seen corresponding path program 1 times [2023-04-01 12:48:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:25,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504461929] [2023-04-01 12:48:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:25,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:25,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:25,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504461929] [2023-04-01 12:48:25,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504461929] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:25,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 12:48:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347778352] [2023-04-01 12:48:25,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:25,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 12:48:25,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:25,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 12:48:25,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:48:25,913 INFO L87 Difference]: Start difference. First operand 1432 states and 1986 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:27,040 INFO L93 Difference]: Finished difference Result 2406 states and 3197 transitions. [2023-04-01 12:48:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:48:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (2), 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 110 [2023-04-01 12:48:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:27,046 INFO L225 Difference]: With dead ends: 2406 [2023-04-01 12:48:27,046 INFO L226 Difference]: Without dead ends: 1816 [2023-04-01 12:48:27,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-04-01 12:48:27,048 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 7243 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7243 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:27,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7243 Valid, 1472 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 12:48:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2023-04-01 12:48:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1432. [2023-04-01 12:48:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4157142857142857) internal successors, (1982), 1428 states have internal predecessors, (1982), 2 states have call successors, (2), 2 states 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 12:48:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1985 transitions. [2023-04-01 12:48:27,201 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1985 transitions. Word has length 110 [2023-04-01 12:48:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:27,201 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1985 transitions. [2023-04-01 12:48:27,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1985 transitions. [2023-04-01 12:48:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 12:48:27,204 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:27,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:48:27,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 12:48:27,204 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr27ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:27,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash -53744971, now seen corresponding path program 1 times [2023-04-01 12:48:27,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:27,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50702700] [2023-04-01 12:48:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:27,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:27,676 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 12:48:27,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:27,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50702700] [2023-04-01 12:48:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50702700] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:27,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:27,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:27,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778590213] [2023-04-01 12:48:27,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:27,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:27,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:27,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:27,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:27,678 INFO L87 Difference]: Start difference. First operand 1432 states and 1985 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:29,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:29,065 INFO L93 Difference]: Finished difference Result 1846 states and 2547 transitions. [2023-04-01 12:48:29,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:29,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (2), 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 110 [2023-04-01 12:48:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:29,071 INFO L225 Difference]: With dead ends: 1846 [2023-04-01 12:48:29,071 INFO L226 Difference]: Without dead ends: 1544 [2023-04-01 12:48:29,072 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 12:48:29,073 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 5421 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5421 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:29,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5421 Valid, 3048 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2734 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 12:48:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2023-04-01 12:48:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1432. [2023-04-01 12:48:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.415) internal successors, (1981), 1428 states have internal predecessors, (1981), 2 states have call successors, (2), 2 states 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 12:48:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1984 transitions. [2023-04-01 12:48:29,223 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1984 transitions. Word has length 110 [2023-04-01 12:48:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:29,223 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1984 transitions. [2023-04-01 12:48:29,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1984 transitions. [2023-04-01 12:48:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-01 12:48:29,226 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:29,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:29,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 12:48:29,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr28ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:29,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:29,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1868098175, now seen corresponding path program 1 times [2023-04-01 12:48:29,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:29,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466807841] [2023-04-01 12:48:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:29,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:29,608 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 12:48:29,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466807841] [2023-04-01 12:48:29,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466807841] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:29,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:29,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636352698] [2023-04-01 12:48:29,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:29,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:29,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:29,610 INFO L87 Difference]: Start difference. First operand 1432 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:31,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:31,255 INFO L93 Difference]: Finished difference Result 2461 states and 3359 transitions. [2023-04-01 12:48:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:31,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (2), 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 110 [2023-04-01 12:48:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:31,263 INFO L225 Difference]: With dead ends: 2461 [2023-04-01 12:48:31,263 INFO L226 Difference]: Without dead ends: 2345 [2023-04-01 12:48:31,264 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 12:48:31,265 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 5575 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 3179 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:31,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 3179 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 12:48:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-01 12:48:31,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-01 12:48:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4142857142857144) internal successors, (1980), 1428 states have internal predecessors, (1980), 2 states have call successors, (2), 2 states 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 12:48:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1983 transitions. [2023-04-01 12:48:31,411 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1983 transitions. Word has length 110 [2023-04-01 12:48:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:31,411 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1983 transitions. [2023-04-01 12:48:31,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 2 states have call successors, (2), 2 states 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 12:48:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1983 transitions. [2023-04-01 12:48:31,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:31,415 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:31,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:31,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 12:48:31,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:31,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:31,416 INFO L85 PathProgramCache]: Analyzing trace with hash 41752470, now seen corresponding path program 1 times [2023-04-01 12:48:31,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:31,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072333190] [2023-04-01 12:48:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:31,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:31,883 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 12:48:31,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:31,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072333190] [2023-04-01 12:48:31,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072333190] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:31,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:31,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:31,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809254196] [2023-04-01 12:48:31,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:31,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:31,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:31,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:31,885 INFO L87 Difference]: Start difference. First operand 1432 states and 1983 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:33,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:33,907 INFO L93 Difference]: Finished difference Result 2733 states and 3770 transitions. [2023-04-01 12:48:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:33,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:33,914 INFO L225 Difference]: With dead ends: 2733 [2023-04-01 12:48:33,914 INFO L226 Difference]: Without dead ends: 2429 [2023-04-01 12:48:33,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:48:33,915 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 4838 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4838 SdHoareTripleChecker+Valid, 4664 SdHoareTripleChecker+Invalid, 4164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:33,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4838 Valid, 4664 Invalid, 4164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 12:48:33,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-04-01 12:48:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1432. [2023-04-01 12:48:34,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4128571428571428) internal successors, (1978), 1428 states have internal predecessors, (1978), 2 states have call successors, (2), 2 states 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 12:48:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1981 transitions. [2023-04-01 12:48:34,072 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1981 transitions. Word has length 112 [2023-04-01 12:48:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:34,072 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1981 transitions. [2023-04-01 12:48:34,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1981 transitions. [2023-04-01 12:48:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:34,075 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:34,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:34,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 12:48:34,075 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:34,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash -861827616, now seen corresponding path program 1 times [2023-04-01 12:48:34,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:34,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419203412] [2023-04-01 12:48:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:34,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:34,654 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 12:48:34,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:34,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419203412] [2023-04-01 12:48:34,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419203412] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:34,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:34,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:48:34,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382883937] [2023-04-01 12:48:34,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:34,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:48:34,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:34,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:48:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:48:34,656 INFO L87 Difference]: Start difference. First operand 1432 states and 1981 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:36,863 INFO L93 Difference]: Finished difference Result 2657 states and 3616 transitions. [2023-04-01 12:48:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 12:48:36,864 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:36,870 INFO L225 Difference]: With dead ends: 2657 [2023-04-01 12:48:36,870 INFO L226 Difference]: Without dead ends: 2531 [2023-04-01 12:48:36,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-01 12:48:36,871 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 4001 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4001 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 4223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:36,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4001 Valid, 4373 Invalid, 4223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4199 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 12:48:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2023-04-01 12:48:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1466. [2023-04-01 12:48:37,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1434 states have (on average 1.4156206415620642) internal successors, (2030), 1462 states have internal predecessors, (2030), 2 states have call successors, (2), 2 states 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 12:48:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2033 transitions. [2023-04-01 12:48:37,035 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2033 transitions. Word has length 112 [2023-04-01 12:48:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:37,036 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 2033 transitions. [2023-04-01 12:48:37,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2033 transitions. [2023-04-01 12:48:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:37,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:37,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:48:37,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 12:48:37,038 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:37,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash -511194546, now seen corresponding path program 1 times [2023-04-01 12:48:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:37,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907005299] [2023-04-01 12:48:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:37,544 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 12:48:37,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907005299] [2023-04-01 12:48:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907005299] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:37,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:37,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:48:37,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316011760] [2023-04-01 12:48:37,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:48:37,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:48:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:48:37,546 INFO L87 Difference]: Start difference. First operand 1466 states and 2033 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:39,532 INFO L93 Difference]: Finished difference Result 2667 states and 3623 transitions. [2023-04-01 12:48:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 12:48:39,533 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:39,552 INFO L225 Difference]: With dead ends: 2667 [2023-04-01 12:48:39,553 INFO L226 Difference]: Without dead ends: 2539 [2023-04-01 12:48:39,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-01 12:48:39,554 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 9626 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9626 SdHoareTripleChecker+Valid, 3915 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:39,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9626 Valid, 3915 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 12:48:39,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2023-04-01 12:48:39,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 1486. [2023-04-01 12:48:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1454 states have (on average 1.4140302613480056) internal successors, (2056), 1482 states have internal predecessors, (2056), 2 states have call successors, (2), 2 states 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 12:48:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2059 transitions. [2023-04-01 12:48:39,725 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2059 transitions. Word has length 112 [2023-04-01 12:48:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:39,725 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2059 transitions. [2023-04-01 12:48:39,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2059 transitions. [2023-04-01 12:48:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:39,728 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:39,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:39,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 12:48:39,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:39,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1854616238, now seen corresponding path program 1 times [2023-04-01 12:48:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817869178] [2023-04-01 12:48:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:40,256 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 12:48:40,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817869178] [2023-04-01 12:48:40,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817869178] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:40,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:40,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:48:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653611678] [2023-04-01 12:48:40,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:40,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:48:40,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:48:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:48:40,259 INFO L87 Difference]: Start difference. First operand 1486 states and 2059 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:42,388 INFO L93 Difference]: Finished difference Result 2777 states and 3796 transitions. [2023-04-01 12:48:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 12:48:42,388 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:42,392 INFO L225 Difference]: With dead ends: 2777 [2023-04-01 12:48:42,392 INFO L226 Difference]: Without dead ends: 2617 [2023-04-01 12:48:42,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-04-01 12:48:42,393 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 6186 mSDsluCounter, 3655 mSDsCounter, 0 mSdLazyCounter, 3941 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6186 SdHoareTripleChecker+Valid, 4411 SdHoareTripleChecker+Invalid, 3972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:42,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6186 Valid, 4411 Invalid, 3972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3941 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 12:48:42,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2023-04-01 12:48:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1486. [2023-04-01 12:48:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1454 states have (on average 1.4126547455295735) internal successors, (2054), 1482 states have internal predecessors, (2054), 2 states have call successors, (2), 2 states 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 12:48:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2057 transitions. [2023-04-01 12:48:42,576 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2057 transitions. Word has length 112 [2023-04-01 12:48:42,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:42,576 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2057 transitions. [2023-04-01 12:48:42,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:42,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2057 transitions. [2023-04-01 12:48:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:42,579 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:42,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:42,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 12:48:42,579 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:42,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash -381743801, now seen corresponding path program 1 times [2023-04-01 12:48:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065572602] [2023-04-01 12:48:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:43,143 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 12:48:43,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065572602] [2023-04-01 12:48:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065572602] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 12:48:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422973869] [2023-04-01 12:48:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:43,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 12:48:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 12:48:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-04-01 12:48:43,146 INFO L87 Difference]: Start difference. First operand 1486 states and 2057 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:45,219 INFO L93 Difference]: Finished difference Result 2198 states and 3021 transitions. [2023-04-01 12:48:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 12:48:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:45,222 INFO L225 Difference]: With dead ends: 2198 [2023-04-01 12:48:45,222 INFO L226 Difference]: Without dead ends: 1618 [2023-04-01 12:48:45,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2023-04-01 12:48:45,223 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 5760 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5760 SdHoareTripleChecker+Valid, 4587 SdHoareTripleChecker+Invalid, 4332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:45,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5760 Valid, 4587 Invalid, 4332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 12:48:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2023-04-01 12:48:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1432. [2023-04-01 12:48:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4114285714285715) internal successors, (1976), 1428 states have internal predecessors, (1976), 2 states have call successors, (2), 2 states 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 12:48:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1979 transitions. [2023-04-01 12:48:45,404 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1979 transitions. Word has length 112 [2023-04-01 12:48:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:45,404 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1979 transitions. [2023-04-01 12:48:45,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:45,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1979 transitions. [2023-04-01 12:48:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:45,406 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:45,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:45,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 12:48:45,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr27ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:45,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:45,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1378686088, now seen corresponding path program 1 times [2023-04-01 12:48:45,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:45,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164711851] [2023-04-01 12:48:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:45,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:45,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164711851] [2023-04-01 12:48:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164711851] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:45,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:45,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:45,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192887221] [2023-04-01 12:48:45,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:45,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:45,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:45,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:45,769 INFO L87 Difference]: Start difference. First operand 1432 states and 1979 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:47,464 INFO L93 Difference]: Finished difference Result 2461 states and 3354 transitions. [2023-04-01 12:48:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:47,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:47,468 INFO L225 Difference]: With dead ends: 2461 [2023-04-01 12:48:47,468 INFO L226 Difference]: Without dead ends: 2345 [2023-04-01 12:48:47,469 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 12:48:47,469 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 6202 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 2969 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6202 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:47,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6202 Valid, 3176 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2969 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 12:48:47,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-01 12:48:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-01 12:48:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4107142857142858) internal successors, (1975), 1428 states have internal predecessors, (1975), 2 states have call successors, (2), 2 states 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 12:48:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1978 transitions. [2023-04-01 12:48:47,665 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1978 transitions. Word has length 112 [2023-04-01 12:48:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:47,666 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1978 transitions. [2023-04-01 12:48:47,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1978 transitions. [2023-04-01 12:48:47,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:47,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:47,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:47,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 12:48:47,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr26ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:47,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:47,669 INFO L85 PathProgramCache]: Analyzing trace with hash -472457399, now seen corresponding path program 1 times [2023-04-01 12:48:47,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:47,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360408055] [2023-04-01 12:48:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:47,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:48,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:48,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360408055] [2023-04-01 12:48:48,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360408055] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:48,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:48,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:48,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262410068] [2023-04-01 12:48:48,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:48,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:48,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:48,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:48,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:48,016 INFO L87 Difference]: Start difference. First operand 1432 states and 1978 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:49,708 INFO L93 Difference]: Finished difference Result 2522 states and 3455 transitions. [2023-04-01 12:48:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:49,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:49,712 INFO L225 Difference]: With dead ends: 2522 [2023-04-01 12:48:49,712 INFO L226 Difference]: Without dead ends: 2393 [2023-04-01 12:48:49,713 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 12:48:49,713 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 3632 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:49,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3632 Valid, 3245 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 12:48:49,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2023-04-01 12:48:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 1432. [2023-04-01 12:48:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.41) internal successors, (1974), 1428 states have internal predecessors, (1974), 2 states have call successors, (2), 2 states 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 12:48:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1977 transitions. [2023-04-01 12:48:49,934 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1977 transitions. Word has length 112 [2023-04-01 12:48:49,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:49,935 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1977 transitions. [2023-04-01 12:48:49,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1977 transitions. [2023-04-01 12:48:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:49,937 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:49,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:49,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 12:48:49,937 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr23ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:49,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash -121824329, now seen corresponding path program 1 times [2023-04-01 12:48:49,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:49,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709165832] [2023-04-01 12:48:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:49,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:50,293 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 12:48:50,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:50,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709165832] [2023-04-01 12:48:50,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709165832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:50,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:50,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:50,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497217460] [2023-04-01 12:48:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:50,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:50,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:50,294 INFO L87 Difference]: Start difference. First operand 1432 states and 1977 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:52,334 INFO L93 Difference]: Finished difference Result 2647 states and 3636 transitions. [2023-04-01 12:48:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:52,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:52,338 INFO L225 Difference]: With dead ends: 2647 [2023-04-01 12:48:52,338 INFO L226 Difference]: Without dead ends: 2429 [2023-04-01 12:48:52,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:48:52,339 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 5702 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5702 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:52,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5702 Valid, 4534 Invalid, 3955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3938 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 12:48:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-04-01 12:48:52,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1432. [2023-04-01 12:48:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4092857142857143) internal successors, (1973), 1428 states have internal predecessors, (1973), 2 states have call successors, (2), 2 states 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 12:48:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1976 transitions. [2023-04-01 12:48:52,554 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1976 transitions. Word has length 112 [2023-04-01 12:48:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:52,554 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1976 transitions. [2023-04-01 12:48:52,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1976 transitions. [2023-04-01 12:48:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:52,556 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:52,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:52,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 12:48:52,556 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:52,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:52,558 INFO L85 PathProgramCache]: Analyzing trace with hash 403998734, now seen corresponding path program 1 times [2023-04-01 12:48:52,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:52,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094234195] [2023-04-01 12:48:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:52,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:52,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:52,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094234195] [2023-04-01 12:48:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094234195] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597747354] [2023-04-01 12:48:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:52,866 INFO L87 Difference]: Start difference. First operand 1432 states and 1976 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:48:54,615 INFO L93 Difference]: Finished difference Result 2457 states and 3346 transitions. [2023-04-01 12:48:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:48:54,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 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 112 [2023-04-01 12:48:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:48:54,624 INFO L225 Difference]: With dead ends: 2457 [2023-04-01 12:48:54,624 INFO L226 Difference]: Without dead ends: 2345 [2023-04-01 12:48:54,624 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 12:48:54,625 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 3658 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3658 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:48:54,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3658 Valid, 3223 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 12:48:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2023-04-01 12:48:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1432. [2023-04-01 12:48:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1400 states have (on average 1.4085714285714286) internal successors, (1972), 1428 states have internal predecessors, (1972), 2 states have call successors, (2), 2 states 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 12:48:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1975 transitions. [2023-04-01 12:48:54,834 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1975 transitions. Word has length 112 [2023-04-01 12:48:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:48:54,835 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1975 transitions. [2023-04-01 12:48:54,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states 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 12:48:54,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1975 transitions. [2023-04-01 12:48:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 12:48:54,837 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:48:54,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:48:54,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 12:48:54,837 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 25 more)] === [2023-04-01 12:48:54,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:48:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 955866662, now seen corresponding path program 1 times [2023-04-01 12:48:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:48:54,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594794078] [2023-04-01 12:48:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:48:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:48:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:48:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:48:55,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:48:55,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594794078] [2023-04-01 12:48:55,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594794078] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:48:55,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:48:55,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:48:55,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410684987] [2023-04-01 12:48:55,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:48:55,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:48:55,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:48:55,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:48:55,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:48:55,151 INFO L87 Difference]: Start difference. First operand 1432 states and 1975 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)