/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:48:58,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:48:58,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:48:58,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-03 02:48:58,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:48:58,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:48:58,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:48:58,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 02:48:58,885 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:48:58,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:48:58,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:48:58,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:48:58,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:48:58,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:48:58,887 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:48:58,887 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:48:58,887 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:48:58,887 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:48:58,888 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:48:58,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:48:58,888 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:48:58,888 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:48:58,888 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:48:58,888 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:48:58,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:48:58,888 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:48:58,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:48:58,889 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:48:58,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:48:58,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:48:58,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:48:58,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:48:58,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:48:58,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:48:58,890 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:48:58,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:48:58,890 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:48:58,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:48:58,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:48:58,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:48:58,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:48:58,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:48:58,891 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:48:58,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:48:58,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:48:58,891 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:48:58,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:48:58,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:48:58,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:48:58,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:48:59,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:48:59,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:48:59,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:48:59,107 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:48:59,107 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:48:59,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:49:00,055 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:49:00,604 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:49:00,605 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:49:00,669 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5d841ecb/ff22f400e4a144cf9c784df7cf3d0ce2/FLAG62a1153c1 [2023-04-03 02:49:00,686 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5d841ecb/ff22f400e4a144cf9c784df7cf3d0ce2 [2023-04-03 02:49:00,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:49:00,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:49:00,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:49:00,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:49:00,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:49:00,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:49:00" (1/1) ... [2023-04-03 02:49:00,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3ae6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:00, skipping insertion in model container [2023-04-03 02:49:00,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:49:00" (1/1) ... [2023-04-03 02:49:00,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:49:00,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:49:01,784 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82693,82706] [2023-04-03 02:49:01,859 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[113477,113490] [2023-04-03 02:49:01,953 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[165794,165807] [2023-04-03 02:49:01,992 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[197365,197378] [2023-04-03 02:49:02,004 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[205886,205899] [2023-04-03 02:49:02,007 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[207836,207849] [2023-04-03 02:49:02,031 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[224171,224184] [2023-04-03 02:49:02,045 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231245,231258] [2023-04-03 02:49:02,082 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[259571,259584] [2023-04-03 02:49:02,121 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[287337,287350] [2023-04-03 02:49:02,234 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-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[370939,370952] [2023-04-03 02:49:02,258 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-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[389606,389619] [2023-04-03 02:49:02,283 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[408649,408662] [2023-04-03 02:49:02,293 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[415665,415678] [2023-04-03 02:49:02,298 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[419162,419175] [2023-04-03 02:49:02,314 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[433807,433820] [2023-04-03 02:49:02,334 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-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[448287,448300] [2023-04-03 02:49:02,370 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[480365,480378] [2023-04-03 02:49:02,472 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-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[569807,569820] [2023-04-03 02:49:02,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:49:02,683 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:49:02,823 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82693,82706] [2023-04-03 02:49:02,859 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[113477,113490] [2023-04-03 02:49:02,911 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[165794,165807] [2023-04-03 02:49:02,944 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[197365,197378] [2023-04-03 02:49:02,954 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[205886,205899] [2023-04-03 02:49:02,957 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[207836,207849] [2023-04-03 02:49:02,974 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[224171,224184] [2023-04-03 02:49:02,982 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[231245,231258] [2023-04-03 02:49:03,012 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[259571,259584] [2023-04-03 02:49:03,041 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[287337,287350] [2023-04-03 02:49:03,132 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[370939,370952] [2023-04-03 02:49:03,151 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[389606,389619] [2023-04-03 02:49:03,172 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[408649,408662] [2023-04-03 02:49:03,179 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[415665,415678] [2023-04-03 02:49:03,184 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[419162,419175] [2023-04-03 02:49:03,198 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-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[433807,433820] [2023-04-03 02:49:03,213 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[448287,448300] [2023-04-03 02:49:03,243 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[480365,480378] [2023-04-03 02:49:03,387 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[569807,569820] [2023-04-03 02:49:03,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:49:03,509 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:49:03,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03 WrapperNode [2023-04-03 02:49:03,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:49:03,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:49:03,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:49:03,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:49:03,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:49:03,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:49:03,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:49:03,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:49:03,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (1/1) ... [2023-04-03 02:49:03,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:49:03,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:49:03,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 02:49:03,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 02:49:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:49:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:49:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:49:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:49:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:49:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:49:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:49:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:49:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:49:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:49:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:49:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 02:49:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:49:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:49:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:49:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:49:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:49:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:49:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:49:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:49:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:49:04,607 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:49:04,608 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:49:12,500 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:49:14,269 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:49:14,270 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:49:14,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:49:14 BoogieIcfgContainer [2023-04-03 02:49:14,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:49:14,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:49:14,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:49:14,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:49:14,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:49:00" (1/3) ... [2023-04-03 02:49:14,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab047e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:49:14, skipping insertion in model container [2023-04-03 02:49:14,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:49:03" (2/3) ... [2023-04-03 02:49:14,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab047e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:49:14, skipping insertion in model container [2023-04-03 02:49:14,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:49:14" (3/3) ... [2023-04-03 02:49:14,283 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:49:14,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:49:14,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-04-03 02:49:14,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:49:14,412 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;@22a41c15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:49:14,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-04-03 02:49:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 5980 states, 5956 states have (on average 1.8096037609133646) internal successors, (10778), 5975 states have internal predecessors, (10778), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 02:49:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-03 02:49:14,469 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:14,470 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] [2023-04-03 02:49:14,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:14,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:14,474 INFO L85 PathProgramCache]: Analyzing trace with hash 605074074, now seen corresponding path program 1 times [2023-04-03 02:49:14,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:14,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589739723] [2023-04-03 02:49:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:14,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:15,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:15,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589739723] [2023-04-03 02:49:15,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589739723] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:15,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:49:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112016305] [2023-04-03 02:49:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:15,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:49:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:49:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:49:15,370 INFO L87 Difference]: Start difference. First operand has 5980 states, 5956 states have (on average 1.8096037609133646) internal successors, (10778), 5975 states have internal predecessors, (10778), 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 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:19,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:19,178 INFO L93 Difference]: Finished difference Result 8758 states and 15584 transitions. [2023-04-03 02:49:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:49:19,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 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 80 [2023-04-03 02:49:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:19,208 INFO L225 Difference]: With dead ends: 8758 [2023-04-03 02:49:19,208 INFO L226 Difference]: Without dead ends: 5507 [2023-04-03 02:49:19,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:49:19,230 INFO L413 NwaCegarLoop]: 4499 mSDtfsCounter, 27753 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 4606 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27753 SdHoareTripleChecker+Valid, 5311 SdHoareTripleChecker+Invalid, 4673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:19,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27753 Valid, 5311 Invalid, 4673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 4606 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-03 02:49:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2023-04-03 02:49:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 5477. [2023-04-03 02:49:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 5455 states have (on average 1.3094408799266728) internal successors, (7143), 5473 states have internal predecessors, (7143), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 7146 transitions. [2023-04-03 02:49:19,431 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 7146 transitions. Word has length 80 [2023-04-03 02:49:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:19,431 INFO L495 AbstractCegarLoop]: Abstraction has 5477 states and 7146 transitions. [2023-04-03 02:49:19,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 7146 transitions. [2023-04-03 02:49:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-03 02:49:19,442 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:19,442 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] [2023-04-03 02:49:19,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:49:19,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:19,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash -614156794, now seen corresponding path program 1 times [2023-04-03 02:49:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:19,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926470870] [2023-04-03 02:49:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:20,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:20,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926470870] [2023-04-03 02:49:20,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926470870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:20,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:20,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:49:20,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400474818] [2023-04-03 02:49:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:20,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:49:20,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:49:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:49:20,200 INFO L87 Difference]: Start difference. First operand 5477 states and 7146 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:26,089 INFO L93 Difference]: Finished difference Result 6041 states and 7899 transitions. [2023-04-03 02:49:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 02:49:26,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 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 81 [2023-04-03 02:49:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:26,104 INFO L225 Difference]: With dead ends: 6041 [2023-04-03 02:49:26,105 INFO L226 Difference]: Without dead ends: 6036 [2023-04-03 02:49:26,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2023-04-03 02:49:26,106 INFO L413 NwaCegarLoop]: 2755 mSDtfsCounter, 26955 mSDsluCounter, 8253 mSDsCounter, 0 mSdLazyCounter, 13787 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26955 SdHoareTripleChecker+Valid, 11008 SdHoareTripleChecker+Invalid, 13860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 13787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:26,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26955 Valid, 11008 Invalid, 13860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 13787 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-03 02:49:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2023-04-03 02:49:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 5477. [2023-04-03 02:49:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 5455 states have (on average 1.309257561869844) internal successors, (7142), 5473 states have internal predecessors, (7142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 7145 transitions. [2023-04-03 02:49:26,245 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 7145 transitions. Word has length 81 [2023-04-03 02:49:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:26,246 INFO L495 AbstractCegarLoop]: Abstraction has 5477 states and 7145 transitions. [2023-04-03 02:49:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 7145 transitions. [2023-04-03 02:49:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-03 02:49:26,254 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:26,254 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] [2023-04-03 02:49:26,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:49:26,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:26,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1733497504, now seen corresponding path program 1 times [2023-04-03 02:49:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:26,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32051210] [2023-04-03 02:49:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:26,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32051210] [2023-04-03 02:49:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32051210] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:26,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:26,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:49:26,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237281337] [2023-04-03 02:49:26,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:26,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:49:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:26,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:49:26,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:49:26,506 INFO L87 Difference]: Start difference. First operand 5477 states and 7145 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:28,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:28,776 INFO L93 Difference]: Finished difference Result 8992 states and 11711 transitions. [2023-04-03 02:49:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:49:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 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 81 [2023-04-03 02:49:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:28,807 INFO L225 Difference]: With dead ends: 8992 [2023-04-03 02:49:28,808 INFO L226 Difference]: Without dead ends: 5642 [2023-04-03 02:49:28,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:49:28,818 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 16549 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16549 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:28,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16549 Valid, 2768 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-03 02:49:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2023-04-03 02:49:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5613. [2023-04-03 02:49:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5613 states, 5591 states have (on average 1.317832230370238) internal successors, (7368), 5609 states have internal predecessors, (7368), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5613 states to 5613 states and 7371 transitions. [2023-04-03 02:49:29,033 INFO L78 Accepts]: Start accepts. Automaton has 5613 states and 7371 transitions. Word has length 81 [2023-04-03 02:49:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:29,033 INFO L495 AbstractCegarLoop]: Abstraction has 5613 states and 7371 transitions. [2023-04-03 02:49:29,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5613 states and 7371 transitions. [2023-04-03 02:49:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:49:29,043 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:29,043 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] [2023-04-03 02:49:29,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:49:29,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr18ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:29,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash 651315751, now seen corresponding path program 1 times [2023-04-03 02:49:29,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:29,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939925634] [2023-04-03 02:49:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:29,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:29,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939925634] [2023-04-03 02:49:29,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939925634] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:29,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:29,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:49:29,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948745920] [2023-04-03 02:49:29,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:29,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:49:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:49:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:49:29,321 INFO L87 Difference]: Start difference. First operand 5613 states and 7371 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:31,077 INFO L93 Difference]: Finished difference Result 10740 states and 14141 transitions. [2023-04-03 02:49:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:49:31,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 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 82 [2023-04-03 02:49:31,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:31,108 INFO L225 Difference]: With dead ends: 10740 [2023-04-03 02:49:31,109 INFO L226 Difference]: Without dead ends: 7334 [2023-04-03 02:49:31,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:49:31,122 INFO L413 NwaCegarLoop]: 2041 mSDtfsCounter, 15813 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15813 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:31,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15813 Valid, 2619 Invalid, 3313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 02:49:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7334 states. [2023-04-03 02:49:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7334 to 7308. [2023-04-03 02:49:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7308 states, 7286 states have (on average 1.3012626955805655) internal successors, (9481), 7304 states have internal predecessors, (9481), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 9484 transitions. [2023-04-03 02:49:31,380 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 9484 transitions. Word has length 82 [2023-04-03 02:49:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:31,380 INFO L495 AbstractCegarLoop]: Abstraction has 7308 states and 9484 transitions. [2023-04-03 02:49:31,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 9484 transitions. [2023-04-03 02:49:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:49:31,389 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:31,389 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] [2023-04-03 02:49:31,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:49:31,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr14ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:31,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:31,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2030444080, now seen corresponding path program 1 times [2023-04-03 02:49:31,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:31,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294720424] [2023-04-03 02:49:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:31,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:32,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:32,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294720424] [2023-04-03 02:49:32,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294720424] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:32,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:32,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:49:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072142475] [2023-04-03 02:49:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:49:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:49:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:49:32,283 INFO L87 Difference]: Start difference. First operand 7308 states and 9484 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:35,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:35,545 INFO L93 Difference]: Finished difference Result 15538 states and 21070 transitions. [2023-04-03 02:49:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:49:35,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-03 02:49:35,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:35,577 INFO L225 Difference]: With dead ends: 15538 [2023-04-03 02:49:35,577 INFO L226 Difference]: Without dead ends: 14958 [2023-04-03 02:49:35,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:49:35,583 INFO L413 NwaCegarLoop]: 4846 mSDtfsCounter, 31591 mSDsluCounter, 18094 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31591 SdHoareTripleChecker+Valid, 22940 SdHoareTripleChecker+Invalid, 3620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:35,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31591 Valid, 22940 Invalid, 3620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 3574 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-03 02:49:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14958 states. [2023-04-03 02:49:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14958 to 7242. [2023-04-03 02:49:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7221 states have (on average 1.3007893643539676) internal successors, (9393), 7238 states have internal predecessors, (9393), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 9396 transitions. [2023-04-03 02:49:36,197 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 9396 transitions. Word has length 82 [2023-04-03 02:49:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:36,198 INFO L495 AbstractCegarLoop]: Abstraction has 7242 states and 9396 transitions. [2023-04-03 02:49:36,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 9396 transitions. [2023-04-03 02:49:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:49:36,210 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:36,210 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] [2023-04-03 02:49:36,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:49:36,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr18ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:36,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash 923756323, now seen corresponding path program 1 times [2023-04-03 02:49:36,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:36,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439103749] [2023-04-03 02:49:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:36,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:36,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:36,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439103749] [2023-04-03 02:49:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439103749] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:36,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:36,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:49:36,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201589747] [2023-04-03 02:49:36,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:36,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:49:36,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:36,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:49:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:49:36,733 INFO L87 Difference]: Start difference. First operand 7242 states and 9396 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:43,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:43,393 INFO L93 Difference]: Finished difference Result 11092 states and 14706 transitions. [2023-04-03 02:49:43,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-03 02:49:43,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 2 states have call successors, (2), 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 83 [2023-04-03 02:49:43,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:43,409 INFO L225 Difference]: With dead ends: 11092 [2023-04-03 02:49:43,410 INFO L226 Difference]: Without dead ends: 10429 [2023-04-03 02:49:43,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2023-04-03 02:49:43,413 INFO L413 NwaCegarLoop]: 2174 mSDtfsCounter, 22257 mSDsluCounter, 9134 mSDsCounter, 0 mSdLazyCounter, 14495 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22257 SdHoareTripleChecker+Valid, 11308 SdHoareTripleChecker+Invalid, 14516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 14495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:43,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22257 Valid, 11308 Invalid, 14516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 14495 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-03 02:49:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10429 states. [2023-04-03 02:49:44,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10429 to 7249. [2023-04-03 02:49:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7228 states have (on average 1.3004980630879912) internal successors, (9400), 7245 states have internal predecessors, (9400), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 9403 transitions. [2023-04-03 02:49:44,095 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 9403 transitions. Word has length 83 [2023-04-03 02:49:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:44,096 INFO L495 AbstractCegarLoop]: Abstraction has 7249 states and 9403 transitions. [2023-04-03 02:49:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 9403 transitions. [2023-04-03 02:49:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:49:44,104 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:44,104 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] [2023-04-03 02:49:44,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:49:44,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:44,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1079431266, now seen corresponding path program 1 times [2023-04-03 02:49:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:44,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314780247] [2023-04-03 02:49:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:44,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314780247] [2023-04-03 02:49:44,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314780247] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:44,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:44,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:49:44,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094196020] [2023-04-03 02:49:44,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:44,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:49:44,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:44,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:49:44,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:49:44,278 INFO L87 Difference]: Start difference. First operand 7249 states and 9403 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:46,831 INFO L93 Difference]: Finished difference Result 13872 states and 18032 transitions. [2023-04-03 02:49:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:49:46,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 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 83 [2023-04-03 02:49:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:46,856 INFO L225 Difference]: With dead ends: 13872 [2023-04-03 02:49:46,856 INFO L226 Difference]: Without dead ends: 9400 [2023-04-03 02:49:46,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:49:46,865 INFO L413 NwaCegarLoop]: 1806 mSDtfsCounter, 14254 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14254 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:46,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14254 Valid, 2432 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-03 02:49:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2023-04-03 02:49:47,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 9380. [2023-04-03 02:49:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9380 states, 9359 states have (on average 1.2992841115503793) internal successors, (12160), 9376 states have internal predecessors, (12160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9380 states to 9380 states and 12163 transitions. [2023-04-03 02:49:47,815 INFO L78 Accepts]: Start accepts. Automaton has 9380 states and 12163 transitions. Word has length 83 [2023-04-03 02:49:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:47,816 INFO L495 AbstractCegarLoop]: Abstraction has 9380 states and 12163 transitions. [2023-04-03 02:49:47,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9380 states and 12163 transitions. [2023-04-03 02:49:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:49:47,826 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:47,826 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] [2023-04-03 02:49:47,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:49:47,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:47,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash -371351569, now seen corresponding path program 1 times [2023-04-03 02:49:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:47,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299985201] [2023-04-03 02:49:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:47,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299985201] [2023-04-03 02:49:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299985201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:47,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:47,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:49:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661336662] [2023-04-03 02:49:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:47,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:49:47,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:47,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:49:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:49:47,995 INFO L87 Difference]: Start difference. First operand 9380 states and 12163 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:50,936 INFO L93 Difference]: Finished difference Result 20782 states and 27276 transitions. [2023-04-03 02:49:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:49:50,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 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 83 [2023-04-03 02:49:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:50,957 INFO L225 Difference]: With dead ends: 20782 [2023-04-03 02:49:50,957 INFO L226 Difference]: Without dead ends: 13649 [2023-04-03 02:49:50,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:49:50,969 INFO L413 NwaCegarLoop]: 1867 mSDtfsCounter, 14439 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14439 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:50,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14439 Valid, 2600 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 02:49:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13649 states. [2023-04-03 02:49:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13649 to 13625. [2023-04-03 02:49:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13625 states, 13604 states have (on average 1.297559541311379) internal successors, (17652), 13621 states have internal predecessors, (17652), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13625 states to 13625 states and 17655 transitions. [2023-04-03 02:49:52,497 INFO L78 Accepts]: Start accepts. Automaton has 13625 states and 17655 transitions. Word has length 83 [2023-04-03 02:49:52,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:52,497 INFO L495 AbstractCegarLoop]: Abstraction has 13625 states and 17655 transitions. [2023-04-03 02:49:52,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:52,498 INFO L276 IsEmpty]: Start isEmpty. Operand 13625 states and 17655 transitions. [2023-04-03 02:49:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 02:49:52,511 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:52,511 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] [2023-04-03 02:49:52,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:49:52,512 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr18ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:52,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2129723108, now seen corresponding path program 1 times [2023-04-03 02:49:52,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:52,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247129690] [2023-04-03 02:49:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:52,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:52,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247129690] [2023-04-03 02:49:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247129690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:52,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:49:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108178063] [2023-04-03 02:49:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:52,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:49:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:49:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:49:52,626 INFO L87 Difference]: Start difference. First operand 13625 states and 17655 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:54,877 INFO L93 Difference]: Finished difference Result 26840 states and 34979 transitions. [2023-04-03 02:49:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:49:54,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-03 02:49:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:54,900 INFO L225 Difference]: With dead ends: 26840 [2023-04-03 02:49:54,900 INFO L226 Difference]: Without dead ends: 16512 [2023-04-03 02:49:54,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:49:54,912 INFO L413 NwaCegarLoop]: 3560 mSDtfsCounter, 3620 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 4490 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:54,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 4490 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 02:49:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16512 states. [2023-04-03 02:49:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16512 to 16485. [2023-04-03 02:49:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16485 states, 16464 states have (on average 1.2894193391642372) internal successors, (21229), 16481 states have internal predecessors, (21229), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16485 states to 16485 states and 21232 transitions. [2023-04-03 02:49:56,843 INFO L78 Accepts]: Start accepts. Automaton has 16485 states and 21232 transitions. Word has length 84 [2023-04-03 02:49:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:56,844 INFO L495 AbstractCegarLoop]: Abstraction has 16485 states and 21232 transitions. [2023-04-03 02:49:56,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:56,844 INFO L276 IsEmpty]: Start isEmpty. Operand 16485 states and 21232 transitions. [2023-04-03 02:49:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 02:49:56,855 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:56,855 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] [2023-04-03 02:49:56,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:49:56,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr18ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:49:56,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2138714620, now seen corresponding path program 1 times [2023-04-03 02:49:56,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:56,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249627447] [2023-04-03 02:49:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:56,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:49:57,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:57,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249627447] [2023-04-03 02:49:57,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249627447] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:57,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:57,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:49:57,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754343817] [2023-04-03 02:49:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:49:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:57,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:49:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:49:57,498 INFO L87 Difference]: Start difference. First operand 16485 states and 21232 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:50:04,099 INFO L93 Difference]: Finished difference Result 28122 states and 37478 transitions. [2023-04-03 02:50:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:50:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-03 02:50:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:50:04,143 INFO L225 Difference]: With dead ends: 28122 [2023-04-03 02:50:04,144 INFO L226 Difference]: Without dead ends: 26572 [2023-04-03 02:50:04,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:50:04,155 INFO L413 NwaCegarLoop]: 3812 mSDtfsCounter, 22109 mSDsluCounter, 17973 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22109 SdHoareTripleChecker+Valid, 21785 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:50:04,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22109 Valid, 21785 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 02:50:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26572 states. [2023-04-03 02:50:06,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26572 to 16441. [2023-04-03 02:50:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16441 states, 16421 states have (on average 1.2891419523780525) internal successors, (21169), 16437 states have internal predecessors, (21169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16441 states to 16441 states and 21172 transitions. [2023-04-03 02:50:06,689 INFO L78 Accepts]: Start accepts. Automaton has 16441 states and 21172 transitions. Word has length 84 [2023-04-03 02:50:06,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:50:06,689 INFO L495 AbstractCegarLoop]: Abstraction has 16441 states and 21172 transitions. [2023-04-03 02:50:06,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 16441 states and 21172 transitions. [2023-04-03 02:50:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 02:50:06,705 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:50:06,706 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] [2023-04-03 02:50:06,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:50:06,706 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:50:06,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:50:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2118912009, now seen corresponding path program 1 times [2023-04-03 02:50:06,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:50:06,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584404094] [2023-04-03 02:50:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:50:06,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:50:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:50:07,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:50:07,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:50:07,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584404094] [2023-04-03 02:50:07,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584404094] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:50:07,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:50:07,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:50:07,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011626427] [2023-04-03 02:50:07,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:50:07,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:50:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:50:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:50:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:50:07,226 INFO L87 Difference]: Start difference. First operand 16441 states and 21172 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:50:14,124 INFO L93 Difference]: Finished difference Result 20682 states and 26705 transitions. [2023-04-03 02:50:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 02:50:14,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 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 84 [2023-04-03 02:50:14,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:50:14,155 INFO L225 Difference]: With dead ends: 20682 [2023-04-03 02:50:14,155 INFO L226 Difference]: Without dead ends: 20674 [2023-04-03 02:50:14,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:50:14,160 INFO L413 NwaCegarLoop]: 1789 mSDtfsCounter, 19260 mSDsluCounter, 5589 mSDsCounter, 0 mSdLazyCounter, 8413 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19260 SdHoareTripleChecker+Valid, 7378 SdHoareTripleChecker+Invalid, 8465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 8413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:50:14,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19260 Valid, 7378 Invalid, 8465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 8413 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-03 02:50:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20674 states. [2023-04-03 02:50:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20674 to 16441. [2023-04-03 02:50:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16441 states, 16421 states have (on average 1.2890810547469704) internal successors, (21168), 16437 states have internal predecessors, (21168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16441 states to 16441 states and 21171 transitions. [2023-04-03 02:50:16,645 INFO L78 Accepts]: Start accepts. Automaton has 16441 states and 21171 transitions. Word has length 84 [2023-04-03 02:50:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:50:16,645 INFO L495 AbstractCegarLoop]: Abstraction has 16441 states and 21171 transitions. [2023-04-03 02:50:16,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 16441 states and 21171 transitions. [2023-04-03 02:50:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 02:50:16,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:50:16,656 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] [2023-04-03 02:50:16,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:50:16,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:50:16,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:50:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash -264892632, now seen corresponding path program 1 times [2023-04-03 02:50:16,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:50:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143920187] [2023-04-03 02:50:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:50:16,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:50:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:50:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:50:17,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:50:17,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143920187] [2023-04-03 02:50:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143920187] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:50:17,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:50:17,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:50:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162029492] [2023-04-03 02:50:17,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:50:17,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:50:17,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:50:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:50:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:50:17,153 INFO L87 Difference]: Start difference. First operand 16441 states and 21171 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:50:24,713 INFO L93 Difference]: Finished difference Result 21160 states and 27866 transitions. [2023-04-03 02:50:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:50:24,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 02:50:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:50:24,734 INFO L225 Difference]: With dead ends: 21160 [2023-04-03 02:50:24,734 INFO L226 Difference]: Without dead ends: 17897 [2023-04-03 02:50:24,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2023-04-03 02:50:24,741 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 18196 mSDsluCounter, 7425 mSDsCounter, 0 mSdLazyCounter, 11192 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18196 SdHoareTripleChecker+Valid, 9196 SdHoareTripleChecker+Invalid, 11211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 11192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:50:24,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18196 Valid, 9196 Invalid, 11211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 11192 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-03 02:50:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17897 states. [2023-04-03 02:50:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17897 to 16194. [2023-04-03 02:50:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16194 states, 16174 states have (on average 1.289786076418944) internal successors, (20861), 16190 states have internal predecessors, (20861), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16194 states to 16194 states and 20864 transitions. [2023-04-03 02:50:27,407 INFO L78 Accepts]: Start accepts. Automaton has 16194 states and 20864 transitions. Word has length 85 [2023-04-03 02:50:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:50:27,407 INFO L495 AbstractCegarLoop]: Abstraction has 16194 states and 20864 transitions. [2023-04-03 02:50:27,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 16194 states and 20864 transitions. [2023-04-03 02:50:27,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 02:50:27,417 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:50:27,417 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] [2023-04-03 02:50:27,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:50:27,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:50:27,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:50:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1687424876, now seen corresponding path program 1 times [2023-04-03 02:50:27,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:50:27,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031493263] [2023-04-03 02:50:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:50:27,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:50:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:50:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:50:27,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:50:27,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031493263] [2023-04-03 02:50:27,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031493263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:50:27,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:50:27,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:50:27,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665163783] [2023-04-03 02:50:27,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:50:27,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:50:27,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:50:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:50:27,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:50:27,872 INFO L87 Difference]: Start difference. First operand 16194 states and 20864 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:50:39,007 INFO L93 Difference]: Finished difference Result 30315 states and 40324 transitions. [2023-04-03 02:50:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:50:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (2), 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 85 [2023-04-03 02:50:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:50:39,049 INFO L225 Difference]: With dead ends: 30315 [2023-04-03 02:50:39,049 INFO L226 Difference]: Without dead ends: 27256 [2023-04-03 02:50:39,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2023-04-03 02:50:39,059 INFO L413 NwaCegarLoop]: 1991 mSDtfsCounter, 22511 mSDsluCounter, 7078 mSDsCounter, 0 mSdLazyCounter, 9969 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22511 SdHoareTripleChecker+Valid, 9069 SdHoareTripleChecker+Invalid, 10037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 9969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:50:39,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22511 Valid, 9069 Invalid, 10037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 9969 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-03 02:50:39,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27256 states. [2023-04-03 02:50:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27256 to 16149. [2023-04-03 02:50:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16149 states, 16129 states have (on average 1.289726579453159) internal successors, (20802), 16145 states have internal predecessors, (20802), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16149 states to 16149 states and 20805 transitions. [2023-04-03 02:50:42,215 INFO L78 Accepts]: Start accepts. Automaton has 16149 states and 20805 transitions. Word has length 85 [2023-04-03 02:50:42,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:50:42,221 INFO L495 AbstractCegarLoop]: Abstraction has 16149 states and 20805 transitions. [2023-04-03 02:50:42,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 16149 states and 20805 transitions. [2023-04-03 02:50:42,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 02:50:42,232 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:50:42,232 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] [2023-04-03 02:50:42,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:50:42,232 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:50:42,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:50:42,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1749773662, now seen corresponding path program 1 times [2023-04-03 02:50:42,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:50:42,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240636199] [2023-04-03 02:50:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:50:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:50:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:50:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:50:42,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:50:42,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240636199] [2023-04-03 02:50:42,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240636199] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:50:42,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:50:42,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:50:42,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708437280] [2023-04-03 02:50:42,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:50:42,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:50:42,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:50:42,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:50:42,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:50:42,892 INFO L87 Difference]: Start difference. First operand 16149 states and 20805 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:50:53,179 INFO L93 Difference]: Finished difference Result 29487 states and 39443 transitions. [2023-04-03 02:50:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:50:53,180 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-03 02:50:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:50:53,221 INFO L225 Difference]: With dead ends: 29487 [2023-04-03 02:50:53,221 INFO L226 Difference]: Without dead ends: 29476 [2023-04-03 02:50:53,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:50:53,228 INFO L413 NwaCegarLoop]: 3942 mSDtfsCounter, 22727 mSDsluCounter, 13649 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22727 SdHoareTripleChecker+Valid, 17591 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:50:53,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22727 Valid, 17591 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 02:50:53,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29476 states. [2023-04-03 02:50:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29476 to 16143. [2023-04-03 02:50:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16143 states, 16123 states have (on average 1.2897723748682006) internal successors, (20795), 16139 states have internal predecessors, (20795), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16143 states to 16143 states and 20798 transitions. [2023-04-03 02:50:56,653 INFO L78 Accepts]: Start accepts. Automaton has 16143 states and 20798 transitions. Word has length 85 [2023-04-03 02:50:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:50:56,653 INFO L495 AbstractCegarLoop]: Abstraction has 16143 states and 20798 transitions. [2023-04-03 02:50:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:50:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 16143 states and 20798 transitions. [2023-04-03 02:50:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:50:56,664 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:50:56,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:50:56,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 02:50:56,664 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr13ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:50:56,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:50:56,665 INFO L85 PathProgramCache]: Analyzing trace with hash 173153632, now seen corresponding path program 1 times [2023-04-03 02:50:56,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:50:56,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042161751] [2023-04-03 02:50:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:50:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:50:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:50:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:50:57,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:50:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042161751] [2023-04-03 02:50:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042161751] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:50:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:50:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:50:57,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045897195] [2023-04-03 02:50:57,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:50:57,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:50:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:50:57,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:50:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:50:57,087 INFO L87 Difference]: Start difference. First operand 16143 states and 20798 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:05,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:51:05,881 INFO L93 Difference]: Finished difference Result 21882 states and 28664 transitions. [2023-04-03 02:51:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:51:05,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 02:51:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:51:05,914 INFO L225 Difference]: With dead ends: 21882 [2023-04-03 02:51:05,914 INFO L226 Difference]: Without dead ends: 20883 [2023-04-03 02:51:05,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:51:05,923 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 18598 mSDsluCounter, 5716 mSDsCounter, 0 mSdLazyCounter, 8478 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18598 SdHoareTripleChecker+Valid, 7565 SdHoareTripleChecker+Invalid, 8520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 8478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:51:05,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18598 Valid, 7565 Invalid, 8520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 8478 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-03 02:51:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20883 states. [2023-04-03 02:51:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20883 to 16143. [2023-04-03 02:51:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16143 states, 16123 states have (on average 1.2897103516715251) internal successors, (20794), 16139 states have internal predecessors, (20794), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16143 states to 16143 states and 20797 transitions. [2023-04-03 02:51:09,497 INFO L78 Accepts]: Start accepts. Automaton has 16143 states and 20797 transitions. Word has length 86 [2023-04-03 02:51:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:51:09,497 INFO L495 AbstractCegarLoop]: Abstraction has 16143 states and 20797 transitions. [2023-04-03 02:51:09,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 16143 states and 20797 transitions. [2023-04-03 02:51:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:51:09,508 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:51:09,508 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] [2023-04-03 02:51:09,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 02:51:09,508 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr15ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:51:09,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:51:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash -715169940, now seen corresponding path program 1 times [2023-04-03 02:51:09,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:51:09,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624669047] [2023-04-03 02:51:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:51:09,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:51:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:51:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:51:09,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:51:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624669047] [2023-04-03 02:51:09,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624669047] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:51:09,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:51:09,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:51:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424163012] [2023-04-03 02:51:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:51:09,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:51:09,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:51:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:51:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:51:09,855 INFO L87 Difference]: Start difference. First operand 16143 states and 20797 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:51:18,695 INFO L93 Difference]: Finished difference Result 23394 states and 30670 transitions. [2023-04-03 02:51:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:51:18,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 02:51:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:51:18,720 INFO L225 Difference]: With dead ends: 23394 [2023-04-03 02:51:18,721 INFO L226 Difference]: Without dead ends: 21864 [2023-04-03 02:51:18,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:51:18,726 INFO L413 NwaCegarLoop]: 1853 mSDtfsCounter, 10859 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 8657 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10859 SdHoareTripleChecker+Valid, 7585 SdHoareTripleChecker+Invalid, 8706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 8657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:51:18,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10859 Valid, 7585 Invalid, 8706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 8657 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-03 02:51:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21864 states. [2023-04-03 02:51:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21864 to 16143. [2023-04-03 02:51:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16143 states, 16123 states have (on average 1.2896483284748497) internal successors, (20793), 16139 states have internal predecessors, (20793), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16143 states to 16143 states and 20796 transitions. [2023-04-03 02:51:22,225 INFO L78 Accepts]: Start accepts. Automaton has 16143 states and 20796 transitions. Word has length 86 [2023-04-03 02:51:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:51:22,226 INFO L495 AbstractCegarLoop]: Abstraction has 16143 states and 20796 transitions. [2023-04-03 02:51:22,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 16143 states and 20796 transitions. [2023-04-03 02:51:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:51:22,253 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:51:22,253 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] [2023-04-03 02:51:22,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 02:51:22,253 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:51:22,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:51:22,254 INFO L85 PathProgramCache]: Analyzing trace with hash 73023350, now seen corresponding path program 1 times [2023-04-03 02:51:22,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:51:22,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963449457] [2023-04-03 02:51:22,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:51:22,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:51:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:51:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:51:22,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:51:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963449457] [2023-04-03 02:51:22,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963449457] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:51:22,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:51:22,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:51:22,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873786216] [2023-04-03 02:51:22,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:51:22,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:51:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:51:22,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:51:22,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:51:22,708 INFO L87 Difference]: Start difference. First operand 16143 states and 20796 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:51:33,267 INFO L93 Difference]: Finished difference Result 25499 states and 33544 transitions. [2023-04-03 02:51:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:51:33,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 02:51:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:51:33,296 INFO L225 Difference]: With dead ends: 25499 [2023-04-03 02:51:33,296 INFO L226 Difference]: Without dead ends: 23905 [2023-04-03 02:51:33,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:51:33,303 INFO L413 NwaCegarLoop]: 1939 mSDtfsCounter, 19726 mSDsluCounter, 5923 mSDsCounter, 0 mSdLazyCounter, 9248 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19726 SdHoareTripleChecker+Valid, 7862 SdHoareTripleChecker+Invalid, 9322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 9248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:51:33,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19726 Valid, 7862 Invalid, 9322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 9248 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-03 02:51:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23905 states. [2023-04-03 02:51:36,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23905 to 16143. [2023-04-03 02:51:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16143 states, 16123 states have (on average 1.289586305278174) internal successors, (20792), 16139 states have internal predecessors, (20792), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16143 states to 16143 states and 20795 transitions. [2023-04-03 02:51:37,007 INFO L78 Accepts]: Start accepts. Automaton has 16143 states and 20795 transitions. Word has length 86 [2023-04-03 02:51:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:51:37,008 INFO L495 AbstractCegarLoop]: Abstraction has 16143 states and 20795 transitions. [2023-04-03 02:51:37,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 16143 states and 20795 transitions. [2023-04-03 02:51:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:51:37,018 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:51:37,018 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] [2023-04-03 02:51:37,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 02:51:37,019 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:51:37,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:51:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash 427510788, now seen corresponding path program 1 times [2023-04-03 02:51:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:51:37,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565816575] [2023-04-03 02:51:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:51:37,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:51:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:51:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:51:37,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:51:37,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565816575] [2023-04-03 02:51:37,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565816575] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:51:37,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:51:37,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:51:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947424981] [2023-04-03 02:51:37,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:51:37,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:51:37,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:51:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:51:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:51:37,600 INFO L87 Difference]: Start difference. First operand 16143 states and 20795 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:51:49,625 INFO L93 Difference]: Finished difference Result 28179 states and 38012 transitions. [2023-04-03 02:51:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:51:49,625 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-03 02:51:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:51:49,657 INFO L225 Difference]: With dead ends: 28179 [2023-04-03 02:51:49,657 INFO L226 Difference]: Without dead ends: 25117 [2023-04-03 02:51:49,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2023-04-03 02:51:49,666 INFO L413 NwaCegarLoop]: 3659 mSDtfsCounter, 17997 mSDsluCounter, 16299 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17997 SdHoareTripleChecker+Valid, 19958 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:51:49,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17997 Valid, 19958 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 02:51:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25117 states. [2023-04-03 02:51:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25117 to 16091. [2023-04-03 02:51:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16072 states have (on average 1.2896341463414633) internal successors, (20727), 16087 states have internal predecessors, (20727), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20730 transitions. [2023-04-03 02:51:54,344 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20730 transitions. Word has length 86 [2023-04-03 02:51:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:51:54,345 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 20730 transitions. [2023-04-03 02:51:54,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:51:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20730 transitions. [2023-04-03 02:51:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:51:54,357 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:51:54,357 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] [2023-04-03 02:51:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 02:51:54,358 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:51:54,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:51:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1979171810, now seen corresponding path program 1 times [2023-04-03 02:51:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:51:54,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277150030] [2023-04-03 02:51:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:51:54,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:51:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:51:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:51:54,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:51:54,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277150030] [2023-04-03 02:51:54,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277150030] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:51:54,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:51:54,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:51:54,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429246022] [2023-04-03 02:51:54,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:51:54,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:51:54,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:51:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:51:54,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:51:54,788 INFO L87 Difference]: Start difference. First operand 16091 states and 20730 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:52:06,389 INFO L93 Difference]: Finished difference Result 22288 states and 28960 transitions. [2023-04-03 02:52:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 02:52:06,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 02:52:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:52:06,417 INFO L225 Difference]: With dead ends: 22288 [2023-04-03 02:52:06,417 INFO L226 Difference]: Without dead ends: 22278 [2023-04-03 02:52:06,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:52:06,421 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 19402 mSDsluCounter, 5722 mSDsCounter, 0 mSdLazyCounter, 8868 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19402 SdHoareTripleChecker+Valid, 7568 SdHoareTripleChecker+Invalid, 8942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 8868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:52:06,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19402 Valid, 7568 Invalid, 8942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 8868 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-03 02:52:06,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22278 states. [2023-04-03 02:52:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22278 to 16091. [2023-04-03 02:52:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16072 states have (on average 1.2895719263315082) internal successors, (20726), 16087 states have internal predecessors, (20726), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20729 transitions. [2023-04-03 02:52:11,231 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20729 transitions. Word has length 86 [2023-04-03 02:52:11,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:52:11,231 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 20729 transitions. [2023-04-03 02:52:11,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20729 transitions. [2023-04-03 02:52:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:52:11,244 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:52:11,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:52:11,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 02:52:11,244 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:52:11,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:52:11,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1305146026, now seen corresponding path program 1 times [2023-04-03 02:52:11,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:52:11,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117314318] [2023-04-03 02:52:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:52:11,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:52:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:52:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:52:11,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:52:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117314318] [2023-04-03 02:52:11,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117314318] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:52:11,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:52:11,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:52:11,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480762888] [2023-04-03 02:52:11,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:52:11,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:52:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:52:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:52:11,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:52:11,674 INFO L87 Difference]: Start difference. First operand 16091 states and 20729 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:52:25,427 INFO L93 Difference]: Finished difference Result 26381 states and 34818 transitions. [2023-04-03 02:52:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:52:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 02:52:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:52:25,454 INFO L225 Difference]: With dead ends: 26381 [2023-04-03 02:52:25,454 INFO L226 Difference]: Without dead ends: 24357 [2023-04-03 02:52:25,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:52:25,459 INFO L413 NwaCegarLoop]: 1917 mSDtfsCounter, 19584 mSDsluCounter, 5884 mSDsCounter, 0 mSdLazyCounter, 9149 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19584 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 9223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 9149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:52:25,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19584 Valid, 7801 Invalid, 9223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 9149 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-03 02:52:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24357 states. [2023-04-03 02:52:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24357 to 16091. [2023-04-03 02:52:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16072 states have (on average 1.289509706321553) internal successors, (20725), 16087 states have internal predecessors, (20725), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20728 transitions. [2023-04-03 02:52:30,160 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20728 transitions. Word has length 86 [2023-04-03 02:52:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:52:30,160 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 20728 transitions. [2023-04-03 02:52:30,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:30,161 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20728 transitions. [2023-04-03 02:52:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:52:30,172 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:52:30,172 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] [2023-04-03 02:52:30,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 02:52:30,172 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:52:30,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:52:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1179838160, now seen corresponding path program 1 times [2023-04-03 02:52:30,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:52:30,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210127603] [2023-04-03 02:52:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:52:30,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:52:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:52:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:52:30,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:52:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210127603] [2023-04-03 02:52:30,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210127603] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:52:30,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:52:30,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:52:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759244359] [2023-04-03 02:52:30,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:52:30,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:52:30,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:52:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:52:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:52:30,533 INFO L87 Difference]: Start difference. First operand 16091 states and 20728 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:52:42,424 INFO L93 Difference]: Finished difference Result 24305 states and 31977 transitions. [2023-04-03 02:52:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:52:42,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 02:52:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:52:42,450 INFO L225 Difference]: With dead ends: 24305 [2023-04-03 02:52:42,450 INFO L226 Difference]: Without dead ends: 22311 [2023-04-03 02:52:42,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:52:42,459 INFO L413 NwaCegarLoop]: 1882 mSDtfsCounter, 18940 mSDsluCounter, 5841 mSDsCounter, 0 mSdLazyCounter, 8690 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18940 SdHoareTripleChecker+Valid, 7723 SdHoareTripleChecker+Invalid, 8742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 8690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:52:42,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18940 Valid, 7723 Invalid, 8742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 8690 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-03 02:52:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22311 states. [2023-04-03 02:52:46,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22311 to 16091. [2023-04-03 02:52:46,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16072 states have (on average 1.289447486311598) internal successors, (20724), 16087 states have internal predecessors, (20724), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20727 transitions. [2023-04-03 02:52:46,950 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20727 transitions. Word has length 86 [2023-04-03 02:52:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:52:46,950 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 20727 transitions. [2023-04-03 02:52:46,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:52:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20727 transitions. [2023-04-03 02:52:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:52:46,963 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:52:46,963 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] [2023-04-03 02:52:46,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 02:52:46,963 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr12ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:52:46,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:52:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1244869220, now seen corresponding path program 1 times [2023-04-03 02:52:46,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:52:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354206731] [2023-04-03 02:52:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:52:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:52:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:52:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:52:47,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:52:47,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354206731] [2023-04-03 02:52:47,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354206731] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:52:47,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:52:47,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 02:52:47,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53472806] [2023-04-03 02:52:47,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:52:47,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 02:52:47,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:52:47,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 02:52:47,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-03 02:52:47,334 INFO L87 Difference]: Start difference. First operand 16091 states and 20727 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:02,953 INFO L93 Difference]: Finished difference Result 28317 states and 37454 transitions. [2023-04-03 02:53:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:53:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 2 states have call successors, (2), 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 86 [2023-04-03 02:53:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:02,999 INFO L225 Difference]: With dead ends: 28317 [2023-04-03 02:53:02,999 INFO L226 Difference]: Without dead ends: 26147 [2023-04-03 02:53:03,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2023-04-03 02:53:03,010 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 17514 mSDsluCounter, 6856 mSDsCounter, 0 mSdLazyCounter, 9638 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17514 SdHoareTripleChecker+Valid, 8772 SdHoareTripleChecker+Invalid, 9703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 9638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:03,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17514 Valid, 8772 Invalid, 9703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 9638 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-03 02:53:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26147 states. [2023-04-03 02:53:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26147 to 16091. [2023-04-03 02:53:08,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16072 states have (on average 1.2893852663016425) internal successors, (20723), 16087 states have internal predecessors, (20723), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20726 transitions. [2023-04-03 02:53:08,088 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20726 transitions. Word has length 86 [2023-04-03 02:53:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:08,088 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 20726 transitions. [2023-04-03 02:53:08,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20726 transitions. [2023-04-03 02:53:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 02:53:08,100 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:08,101 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] [2023-04-03 02:53:08,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 02:53:08,101 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr17ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-04-03 02:53:08,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1981816733, now seen corresponding path program 1 times [2023-04-03 02:53:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:08,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497504143] [2023-04-03 02:53:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:08,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:08,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:08,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497504143] [2023-04-03 02:53:08,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497504143] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:08,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:08,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:53:08,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181279581] [2023-04-03 02:53:08,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:08,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:53:08,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:53:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:08,204 INFO L87 Difference]: Start difference. First operand 16091 states and 20726 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)